Psammophilus dorsalis agamas were studied across urban and rural areas in India to understand how they persist in urban environments. The study found:
1) The agamas' diet in both areas was mainly composed of ants, indicating flexibility.
2) Dietary overlap was high between urban and rural populations (80.3%), and between males and females in each area (80-91%).
3) Surprisingly, urban agamas had higher body mass indices than rural ones, despite consuming a greater diversity and volume of prey in rural areas.
4) Males moved more in rural areas, likely due to higher energy expenditure, but all agamas managed to hunt enough in fragmented urban habitats.
Article 'Response of moths (Lepidoptera: Heterocera) to livestock grazing in Mongolian rangelands' by Khishigdelger Enkhtura, Martin Pfeiffera, Ariuntsetseg Lkhagvaa, Bazartseren Boldgiva
Water-related bird assemblages in an urban pond ‘archipelago’: Winter pattern...Maria Paola Di Santo
This study reports on the patterns of species occurrence, abundance and richness of a wintering water-related bird assemblage in an ‘archipelago’ of 70 small artificial urban ponds (AUPs) embedded in a metropolitan landscape (Rome, central Italy). A total of 20 species in 26 AUPs were sampled. Only the largest AUPs (>0.1 ha) contained all these species, except for Gallinula chloropus. The highest total mean species abundance was observed in the largest ponds, with statistically significant differences evident among size classes. Two significant spatial thresholds in species abundance and richness were observed (between 0.01 and 0.1 ha; between 0.1 and 1 ha in size). The abundance of single species was correlated with their frequency of occurrence. Ponds in urban areas must be larger than 0.1 ha to host a rich winter assemblage of birds, with a further increase in richness noted with a surface area larger than 1 ha. The highest number of species was observed in the larger ponds (>1 ha). The species richness of each AUP is directly correlated to their size (log-transformed species–area relationship: log S = 3.515 + 0.497 log A; R2 = 0.76). Further research should be conducted to confirm these patterns and to implement information useful for planning and management of artificial ponds in urban areas for this purpose.
Article 'Response of moths (Lepidoptera: Heterocera) to livestock grazing in Mongolian rangelands' by Khishigdelger Enkhtura, Martin Pfeiffera, Ariuntsetseg Lkhagvaa, Bazartseren Boldgiva
Water-related bird assemblages in an urban pond ‘archipelago’: Winter pattern...Maria Paola Di Santo
This study reports on the patterns of species occurrence, abundance and richness of a wintering water-related bird assemblage in an ‘archipelago’ of 70 small artificial urban ponds (AUPs) embedded in a metropolitan landscape (Rome, central Italy). A total of 20 species in 26 AUPs were sampled. Only the largest AUPs (>0.1 ha) contained all these species, except for Gallinula chloropus. The highest total mean species abundance was observed in the largest ponds, with statistically significant differences evident among size classes. Two significant spatial thresholds in species abundance and richness were observed (between 0.01 and 0.1 ha; between 0.1 and 1 ha in size). The abundance of single species was correlated with their frequency of occurrence. Ponds in urban areas must be larger than 0.1 ha to host a rich winter assemblage of birds, with a further increase in richness noted with a surface area larger than 1 ha. The highest number of species was observed in the larger ponds (>1 ha). The species richness of each AUP is directly correlated to their size (log-transformed species–area relationship: log S = 3.515 + 0.497 log A; R2 = 0.76). Further research should be conducted to confirm these patterns and to implement information useful for planning and management of artificial ponds in urban areas for this purpose.
Do fine-scale factors shape the use of riparian galleries by carnivores in a ...Agriculture Journal IJOEAR
Abstract— Riparian galleries are key structural elements of Mediterranean landscapes and their importance for carnivores has been widely demonstrated. However, humanization of the landscape has led to their degradation with consequences not fully understood. In this study we assessed the response of mesocarnivores to the fine-scale variation in the quality of a riparian gallery (Vale do Cobrão stream, central Portugal), evaluated on the basis of the QBR index (‘Qualitat del Bosc de Ribera’ in spanish) and an adaptation of the same considering mesocarnivore ecological requirements. These were represented through four parameters that could influence habitat quality for these species, namely refuge (total riparian cover, cover structure), disturbance and food availability. For the latter we considered the known main food resources for Mediterranean mesocarnivores: small mammals, lagomorphs, insects and fruits. Mesocarnivore use was evaluated through camera-trapping and sign surveys. For both indexes a concordance was observed between quality variation and its use by carnivores, and we also found a positive correlation between both indexes. The adapted QBR, being more laborious but also more realistic, could serve as guidance for conservation practice at the local scale, benefiting both land managers environmentally concerned, conservation practitioners and carnivore populations inhabiting humanized landscapes. However, for spatially wider approaches the original QBR proved to be a good indicator for the presence of mesocarnivores, being useful in the development of restauration or conservation strategies, as well as for research and monitoring activities of carnivore guilds.
Seasonal Phenology of Reptiles in a Mediterranean Environment (“Castel di Gui...IJEABJ
The present work reports the seasonal phenology of the reptiles of the "Castel di Guido" Natural Park near Rome (Northern Latium, Italy). During field observations, between September 2014 and July 2016, transects were carried out along the ecotones of the park, in order to describe the period of seasonal activity of the reptiles present. The area is characterized by Mediterranean mesothermal climate. In the Mediterranean area, reptiles have a broader annual activity range than other European regions, greatly reducing winter latency. Reptile activities start very early, in some case it is possible to observe the snake Hierophis viridiflavus and lizards, such as Podarcis muralis and Podarcis siculus, in thermoregulation activity in the middle of winter. The mild climate that is recorded on average in autumn favors the activity in the period between September and December; Zamenis longissimus is observed regularly in October. Testudo hermanni mates regularly in autumn and it is active until the first decade of December. The research shows that during the winter period reptiles can be observed in activity; for some species, Chalcides chalcides, Podarcis sp., Hierophis viridiflavus, this seems to be a remarkable datum that broad considerably the annual phenology reported in the literature.
Reptile Diversity in Mt. Matutum Protected Landscape, South Cotabato, Philipp...Innspub Net
Reptiles are highly diversewith high percentage of endemism in the Philippines. However, reptile diversity in Mindanao, the second largest island in the country,is poorly known. To determine the species richness, diversity, endemism and conservation status of reptiles, this study was conducted from August to December 2013in six sampling sites of Mt. Matutum Protected Landscape (MMPL), South Cotabato.Cruising methodwasdone in the six sampling sites of MMPL. Paleontological Statistics Software Package (PAST) version 3.06 was used to determine the biodiversity indices, similarity index, and Kruskal-Wallis test. Thirteen species of reptiles belonging to five families and 11 genera with percentage endemism of46.15% were documented. High species diversity of reptiles with more or less even distribution was recorded in MMPL. Among the sampled sites, sampling site 1, a disturbed lowland dipterocarp forest had the highest species diversityand endemism.Sphenomorphusvariegatus was the most abundant species. Tropidophoruspartelloi, the only Mindanao Island endemic species was only found in the disturbed and undisturbed montane forests. Most of the documented species were under the Least Concern status. Bray-Curtis cluster analysis showed that sites 2 and 5 had the highest similarity percentage (68%) while Kruskal-Wallis test showed no significant difference between samples in disturbedand undisturbed sites. Threats to the reptiles of MMPL were observed to be the conversion of forest to farmland and hunting thus implying the need for protection of habitats and conservation of species in MMPL.
Changes in benthic communities in the Middle Atlas springs (Morocco) and thei...Innspub Net
The sources of the Moroccan Middle Atlas suffer not only the effects of anthropogenic pressures, but also those of climate change whose impact is difficult to predict. Our goal is to better understand the succession of processions fauna of the upper Guigou. It is a compendium comparative between the benthic fauna collected towards the end of the years 70 (1979) in the sources Arbalou Abrchane, Tit Zil and the Wadi Guigou. As well as those harvested in the same sites, thirty-four years after. This revealed a significant drop in dissolved oxygen concentration decreased from 7.4 (mg/l) in 1979 to 2.52 (mg/l) in 2015. We have also raised an increase in the workload in chlorides and major elements. Benthic fauna, a significant change in population since 1979, with the appearance and installation of more than a dozen of taxa were identified (Simulium pseudoquinum, Gammarus gauthieri, Phagocata sp., Dugesia gonocephala). Some of these species have become invasive, such as Amphipod crustaceans Gammarus gauthieri, either very abundant as Simulium pseudoquinum. We note the effect “medium” for the direct selection of the species. Other indirect effects due to the reduction of the three dimensional biogenic structures would have limited recognizably State niches by polluo-sensitive species (Ephemeroptera, Heteroptera, Coleoptera and Trichoptera) and could contribute to the total disappearance of all order plecoptera in favour of a dominance of the polluo-tolerant species (Oligochaetes). Over a period of 35 years, there is a deterioration of the health of the aquatic ecosystem studied, a State of art reflected by a decline of the benthic community that lives there.
Reforestation is one of the Philippines’ government efforts to restore and rehabilitate degraded mangrove ecosystems. Although there is recovery of the ecosystem in terms of vegetation, the recovery of closely-linked faunal species in terms of community structure is still understudied. This research investigates the community structure of mangrove crabs under two different management schemes: protected mangroves and reforested mangroves. The transect-plot method was employed in each management scheme to quantify the vegetation, crab assemblages and environmental variables. Community composition of crabs and mangrove trees were compared between protected and reforested mangroves using non-metric multi-dimensional scaling and analysis of similarity in PRIMER 6. Chi-squared was used to test the variance of sex ration of the crabs. Canonical Correspondence Analysis was used to determine the relationship between crabs and environmental parameters. A total of twelve species of crabs belonging to six families were identified in protected mangroves while only four species were documented in reforested mangroves. Perisesarma indiarum and Baptozius vinosus were the most dominant species in protected and reforested mangrove, respectively. Univariate analysis of variance of crab assemblage data revealed significant differences in crab composition and abundance between protected mangroves and from reforested mangroves (P<0.05).><0.05).Environmental factors and human intervention had contributed to the difference in crab assemblages in mangrove ecosystems.
Diversity and abundance of terrestrial mammals in the northern periphery of ...Innspub Net
The Tanoé-Ehy Marsh Forest (TEMF), an unprotected forest that is about to be turn into a voluntary nature reserve is a forest block in south-eastern Côte d’Ivoire known as being of great importance for the conservation of biodiversity. But in the rainy season, that forest is largely over flooded and terrestrial mammals are likely to move to the periphery and make them vulnerable to anthropogenic threats. Our objectives are to determine the diversity, the relative abundance of terrestrial mammals and their spatial distribution in the northern periphery of the TEMF during the rainy season. We collected data by conducting recce surveys after interviews with local people. In total, we obtained 33 species among which ten primates’ species were identified. According to the recce survey, the African Civet (Civettictis civetta) and the Bushbuck (Tragelaphus scriptus) are the most common and abundant species in the study area with 12.7% and 12.0% of relative abundance respectively. In addition, six of the listed species are on the IUCN Red List, including Piliocolobus waldronae, a critically endangered species, Cercocebus lunulatus and Cercopithecus roloway endangered species, Colobus vellerosus, Phataginus tetradactyla and Phataginus tricuspis, three vulnerable species. Thus, the consideration of the periphery for the sustainable management of the TEMF is proving to be an imperative.
Tovacov lakes, and the whole area affected by mining, represents a very important refuge for many rare species of plants and animals that can’t find suitable living conditions in the surrounding intensively farmed landscape. Due to the high level of underground water and the presence of gravel bed, Tovacov lakes can be very important wetlands but also interesting xerotherm habitat in the future. Our aim is not only to identify this biodiversity, but also to support it in the future by targeted interventions.
In the first phase of the project large field survey of different habitats were carried out. These surveys will be focused on characteristic areas that differ in moisture, age and the way they were created. Apart from vascular plants and vegetation, we will be focused on major groups of organisms for which such habitats are essential and at the same time there isn’t enough historical data. These are mainly beetles, butterflies and spiders, but other groups of animals will not be left out.
In the second phase a comparison of diversity of locally rare species with their representation in the various habitats was completed. In this way the mapping of biologically valuable sites and habitats that create appropriate conditions for the occurrence of target species is done.
In the third part, created design principles of management for such areas that will support the best possible future existence of discovered organisms and will create suitable biotopes for other types of communities of plants and animals.
The project won the International contest of the Quarry Life Award 2014 in the category “Biodiversity Enhancement”
Read more: http://www.quarrylifeaward.com/project/research-biodiversity-tovacov-lakes
The present study aims to investigate the biodiversity of woody vegetation along a gradient of human impacting region in the three constituent parts of Ferlo Biosphere Reserve (FBR): the core area, the buffer zone and the transition area. We conducted an inventory of 110 plots of 900 m² each. Total species richness was 49 species distributed in 32 genera within 16 botanical families. The analysis of contesimal frequency showed that Guiera senegalensis is the most common species with a presence of 75% of such records. Examination of species abundance spectrum showed that four most abundant species such as Guiera senegalensis (29.5%), Combretum glutinosum (15.9%), Pterocarpus lucens (11.6%) and Boscia senegalensis (10 , 5%). These four species represent 68% of the total individuals of the RBF and are also the four most common species. The spectrum of abundance of families showed that Combretaceae is the best represented family with almost half of the number of species (49.7%). The representativeness of biological types and geographical affinity of the species has been established for the woody vegetation in the study area. The study of diversity indices revealed that the buffer zone and the transition area are subjected to multiple uses and experiencing human action. It has a greater diversity and a level of organization with higher timber stand than the central area which is an integral conservation zone.
The Assessment of Human-Snake Interaction and its Outcome in the City of KumbaAI Publications
Throughout history humans have had an uneasy relationship with serpents. Snakes are animals that fascinate many people while frightening others, good or bad, most people have strong feelings about snakes, but few people remain neutral. Most human-snake interactions had lead to the destruction of snakes due to human inability to control fear and panic. The indiscriminate killing of snakes for presumed human safety has drastically reduced the population of many snake species to the level of extirpation. The objective of this, however, is to examine the human interaction with snakes in city of Kumba. To get this survey done, a total number of two hundred and fifty questionnaires were administered to a randomly selected population sample in the study area. The results of the survey revealed that the prevention of snake attacks and the opinion of people on snake population management is significantly related (X2 = 11.069 df=4, P<0.05).The importance of snakes and their medical need for snake venom has showed a significant agreement (X2 = 12.045 df=2, P<0.05). Also, the prevention of snake attacks and the area snakes are easily sighted showed a significant association (X2 = 29.205 df=4, P<0.05). In addition, there is a significant link between the snake-bite treatment and its prevention (R2 = 0.312, P<0.05). Moreso, a respondent score of 39.30% is recorded upon the knowledge of venomous snakes. Furthermore, the study recorded a respondent score of 39.30% on the preferable use of traditional treatment on snake-bite victim than the expected medical treatment (31.84%), creating an understanding that the people of Kumba are still very much dependent on the ancient methods of treating snake-bite victims. The Kumba city dwellers need education on the snake behaviour, venomous and non venomous species around their area and the ecological and medical importance of snakes.
Abstract ─ The soil-litter system is the natural habitat for a wide variety of organisms, microorganisms and invertebrates, with differences in size and metabolism, which are responsible for numerous functions. The soil mesofauna is composed of animals of body diameter between 100 μm and 2 mm, consisting of the groups Araneida, Acari, Collembola, Hymenoptera, Diptera, Protura, Diplura, Symphyla, Enchytraeidae (Oligochaeta), Isoptera, Chilopoda, Diplopoda and Mollusca. These animals, extremely dependent on humidity, move in the pores of the soil and at the interface between the litter and the soil. The edaphic fauna, besides having a great functional diversity, presents a rich diversity of species. As a result, these organisms affect the physical, chemical and, consequently, the biological factors of the soil. Therefore, the edaphic fauna and its activities are of extreme importance so that the soil is fertile and can vigorously support the vegetation found there, being spontaneous or cultivated. The composition, distribution and density of the edaphic acarofauna varies according to the soil depth, mites size, location and the season of the year. Edaphic mites are generally found in greater quantities in the organic matter layer than in the soil mineral. The subclass Acari is divided in seven orders being the Mesostigmata, Trombidiformes, Endeostigmata and Sarcoptiformes those that frequently occur in the soil. In the order Sarcoptiformes the suborder Oribatida (formerly Cryptostigmata) is one of the more numerous groups of soil arthropods, both in number of species and specimens. Considering the above facts, it was the objective of this work to know the acarofauna of the soil in a coffee plantation and rank the taxa in a decreasing way, by the use of faunistic analysis. The soil samples were taken in coffee plantation in the Experimental Station of EPAMIG, in São Sebastião do Paraíso, MG, Brazil, in two periods, end of dry and end of rainy season of the year 2013, and the extraction of edaphic mites of the soil mesofauna was done at the Laboratory of Acarology of EPAMIG Sul/EcoCentro, in Lavras, as well as other activities related to the study. The result show that edaphic mites of the cohort Astigmatina and suborder Oribatid are dominant in both periods studied, and can be worked to be an indicative of soil quality.
Assessment of Endophytic Fungal Flora Responsible for Plant Growth Promotion...Sryahwa Publications
The present paper discusses the highest colonization of fungal endophytes as Alternaria speciesin comparison with Colletotrichumspecies and Fusarium species in all three plants Pongamia pinnata, Securinega leucopyrus and Rhus mysorensis. These endophytic fungi protect these plants from various
environmental factors such as temperature, moisture and other environmental factors.
Do fine-scale factors shape the use of riparian galleries by carnivores in a ...Agriculture Journal IJOEAR
Abstract— Riparian galleries are key structural elements of Mediterranean landscapes and their importance for carnivores has been widely demonstrated. However, humanization of the landscape has led to their degradation with consequences not fully understood. In this study we assessed the response of mesocarnivores to the fine-scale variation in the quality of a riparian gallery (Vale do Cobrão stream, central Portugal), evaluated on the basis of the QBR index (‘Qualitat del Bosc de Ribera’ in spanish) and an adaptation of the same considering mesocarnivore ecological requirements. These were represented through four parameters that could influence habitat quality for these species, namely refuge (total riparian cover, cover structure), disturbance and food availability. For the latter we considered the known main food resources for Mediterranean mesocarnivores: small mammals, lagomorphs, insects and fruits. Mesocarnivore use was evaluated through camera-trapping and sign surveys. For both indexes a concordance was observed between quality variation and its use by carnivores, and we also found a positive correlation between both indexes. The adapted QBR, being more laborious but also more realistic, could serve as guidance for conservation practice at the local scale, benefiting both land managers environmentally concerned, conservation practitioners and carnivore populations inhabiting humanized landscapes. However, for spatially wider approaches the original QBR proved to be a good indicator for the presence of mesocarnivores, being useful in the development of restauration or conservation strategies, as well as for research and monitoring activities of carnivore guilds.
Seasonal Phenology of Reptiles in a Mediterranean Environment (“Castel di Gui...IJEABJ
The present work reports the seasonal phenology of the reptiles of the "Castel di Guido" Natural Park near Rome (Northern Latium, Italy). During field observations, between September 2014 and July 2016, transects were carried out along the ecotones of the park, in order to describe the period of seasonal activity of the reptiles present. The area is characterized by Mediterranean mesothermal climate. In the Mediterranean area, reptiles have a broader annual activity range than other European regions, greatly reducing winter latency. Reptile activities start very early, in some case it is possible to observe the snake Hierophis viridiflavus and lizards, such as Podarcis muralis and Podarcis siculus, in thermoregulation activity in the middle of winter. The mild climate that is recorded on average in autumn favors the activity in the period between September and December; Zamenis longissimus is observed regularly in October. Testudo hermanni mates regularly in autumn and it is active until the first decade of December. The research shows that during the winter period reptiles can be observed in activity; for some species, Chalcides chalcides, Podarcis sp., Hierophis viridiflavus, this seems to be a remarkable datum that broad considerably the annual phenology reported in the literature.
Reptile Diversity in Mt. Matutum Protected Landscape, South Cotabato, Philipp...Innspub Net
Reptiles are highly diversewith high percentage of endemism in the Philippines. However, reptile diversity in Mindanao, the second largest island in the country,is poorly known. To determine the species richness, diversity, endemism and conservation status of reptiles, this study was conducted from August to December 2013in six sampling sites of Mt. Matutum Protected Landscape (MMPL), South Cotabato.Cruising methodwasdone in the six sampling sites of MMPL. Paleontological Statistics Software Package (PAST) version 3.06 was used to determine the biodiversity indices, similarity index, and Kruskal-Wallis test. Thirteen species of reptiles belonging to five families and 11 genera with percentage endemism of46.15% were documented. High species diversity of reptiles with more or less even distribution was recorded in MMPL. Among the sampled sites, sampling site 1, a disturbed lowland dipterocarp forest had the highest species diversityand endemism.Sphenomorphusvariegatus was the most abundant species. Tropidophoruspartelloi, the only Mindanao Island endemic species was only found in the disturbed and undisturbed montane forests. Most of the documented species were under the Least Concern status. Bray-Curtis cluster analysis showed that sites 2 and 5 had the highest similarity percentage (68%) while Kruskal-Wallis test showed no significant difference between samples in disturbedand undisturbed sites. Threats to the reptiles of MMPL were observed to be the conversion of forest to farmland and hunting thus implying the need for protection of habitats and conservation of species in MMPL.
Changes in benthic communities in the Middle Atlas springs (Morocco) and thei...Innspub Net
The sources of the Moroccan Middle Atlas suffer not only the effects of anthropogenic pressures, but also those of climate change whose impact is difficult to predict. Our goal is to better understand the succession of processions fauna of the upper Guigou. It is a compendium comparative between the benthic fauna collected towards the end of the years 70 (1979) in the sources Arbalou Abrchane, Tit Zil and the Wadi Guigou. As well as those harvested in the same sites, thirty-four years after. This revealed a significant drop in dissolved oxygen concentration decreased from 7.4 (mg/l) in 1979 to 2.52 (mg/l) in 2015. We have also raised an increase in the workload in chlorides and major elements. Benthic fauna, a significant change in population since 1979, with the appearance and installation of more than a dozen of taxa were identified (Simulium pseudoquinum, Gammarus gauthieri, Phagocata sp., Dugesia gonocephala). Some of these species have become invasive, such as Amphipod crustaceans Gammarus gauthieri, either very abundant as Simulium pseudoquinum. We note the effect “medium” for the direct selection of the species. Other indirect effects due to the reduction of the three dimensional biogenic structures would have limited recognizably State niches by polluo-sensitive species (Ephemeroptera, Heteroptera, Coleoptera and Trichoptera) and could contribute to the total disappearance of all order plecoptera in favour of a dominance of the polluo-tolerant species (Oligochaetes). Over a period of 35 years, there is a deterioration of the health of the aquatic ecosystem studied, a State of art reflected by a decline of the benthic community that lives there.
Reforestation is one of the Philippines’ government efforts to restore and rehabilitate degraded mangrove ecosystems. Although there is recovery of the ecosystem in terms of vegetation, the recovery of closely-linked faunal species in terms of community structure is still understudied. This research investigates the community structure of mangrove crabs under two different management schemes: protected mangroves and reforested mangroves. The transect-plot method was employed in each management scheme to quantify the vegetation, crab assemblages and environmental variables. Community composition of crabs and mangrove trees were compared between protected and reforested mangroves using non-metric multi-dimensional scaling and analysis of similarity in PRIMER 6. Chi-squared was used to test the variance of sex ration of the crabs. Canonical Correspondence Analysis was used to determine the relationship between crabs and environmental parameters. A total of twelve species of crabs belonging to six families were identified in protected mangroves while only four species were documented in reforested mangroves. Perisesarma indiarum and Baptozius vinosus were the most dominant species in protected and reforested mangrove, respectively. Univariate analysis of variance of crab assemblage data revealed significant differences in crab composition and abundance between protected mangroves and from reforested mangroves (P<0.05).><0.05).Environmental factors and human intervention had contributed to the difference in crab assemblages in mangrove ecosystems.
Diversity and abundance of terrestrial mammals in the northern periphery of ...Innspub Net
The Tanoé-Ehy Marsh Forest (TEMF), an unprotected forest that is about to be turn into a voluntary nature reserve is a forest block in south-eastern Côte d’Ivoire known as being of great importance for the conservation of biodiversity. But in the rainy season, that forest is largely over flooded and terrestrial mammals are likely to move to the periphery and make them vulnerable to anthropogenic threats. Our objectives are to determine the diversity, the relative abundance of terrestrial mammals and their spatial distribution in the northern periphery of the TEMF during the rainy season. We collected data by conducting recce surveys after interviews with local people. In total, we obtained 33 species among which ten primates’ species were identified. According to the recce survey, the African Civet (Civettictis civetta) and the Bushbuck (Tragelaphus scriptus) are the most common and abundant species in the study area with 12.7% and 12.0% of relative abundance respectively. In addition, six of the listed species are on the IUCN Red List, including Piliocolobus waldronae, a critically endangered species, Cercocebus lunulatus and Cercopithecus roloway endangered species, Colobus vellerosus, Phataginus tetradactyla and Phataginus tricuspis, three vulnerable species. Thus, the consideration of the periphery for the sustainable management of the TEMF is proving to be an imperative.
Tovacov lakes, and the whole area affected by mining, represents a very important refuge for many rare species of plants and animals that can’t find suitable living conditions in the surrounding intensively farmed landscape. Due to the high level of underground water and the presence of gravel bed, Tovacov lakes can be very important wetlands but also interesting xerotherm habitat in the future. Our aim is not only to identify this biodiversity, but also to support it in the future by targeted interventions.
In the first phase of the project large field survey of different habitats were carried out. These surveys will be focused on characteristic areas that differ in moisture, age and the way they were created. Apart from vascular plants and vegetation, we will be focused on major groups of organisms for which such habitats are essential and at the same time there isn’t enough historical data. These are mainly beetles, butterflies and spiders, but other groups of animals will not be left out.
In the second phase a comparison of diversity of locally rare species with their representation in the various habitats was completed. In this way the mapping of biologically valuable sites and habitats that create appropriate conditions for the occurrence of target species is done.
In the third part, created design principles of management for such areas that will support the best possible future existence of discovered organisms and will create suitable biotopes for other types of communities of plants and animals.
The project won the International contest of the Quarry Life Award 2014 in the category “Biodiversity Enhancement”
Read more: http://www.quarrylifeaward.com/project/research-biodiversity-tovacov-lakes
The present study aims to investigate the biodiversity of woody vegetation along a gradient of human impacting region in the three constituent parts of Ferlo Biosphere Reserve (FBR): the core area, the buffer zone and the transition area. We conducted an inventory of 110 plots of 900 m² each. Total species richness was 49 species distributed in 32 genera within 16 botanical families. The analysis of contesimal frequency showed that Guiera senegalensis is the most common species with a presence of 75% of such records. Examination of species abundance spectrum showed that four most abundant species such as Guiera senegalensis (29.5%), Combretum glutinosum (15.9%), Pterocarpus lucens (11.6%) and Boscia senegalensis (10 , 5%). These four species represent 68% of the total individuals of the RBF and are also the four most common species. The spectrum of abundance of families showed that Combretaceae is the best represented family with almost half of the number of species (49.7%). The representativeness of biological types and geographical affinity of the species has been established for the woody vegetation in the study area. The study of diversity indices revealed that the buffer zone and the transition area are subjected to multiple uses and experiencing human action. It has a greater diversity and a level of organization with higher timber stand than the central area which is an integral conservation zone.
The Assessment of Human-Snake Interaction and its Outcome in the City of KumbaAI Publications
Throughout history humans have had an uneasy relationship with serpents. Snakes are animals that fascinate many people while frightening others, good or bad, most people have strong feelings about snakes, but few people remain neutral. Most human-snake interactions had lead to the destruction of snakes due to human inability to control fear and panic. The indiscriminate killing of snakes for presumed human safety has drastically reduced the population of many snake species to the level of extirpation. The objective of this, however, is to examine the human interaction with snakes in city of Kumba. To get this survey done, a total number of two hundred and fifty questionnaires were administered to a randomly selected population sample in the study area. The results of the survey revealed that the prevention of snake attacks and the opinion of people on snake population management is significantly related (X2 = 11.069 df=4, P<0.05).The importance of snakes and their medical need for snake venom has showed a significant agreement (X2 = 12.045 df=2, P<0.05). Also, the prevention of snake attacks and the area snakes are easily sighted showed a significant association (X2 = 29.205 df=4, P<0.05). In addition, there is a significant link between the snake-bite treatment and its prevention (R2 = 0.312, P<0.05). Moreso, a respondent score of 39.30% is recorded upon the knowledge of venomous snakes. Furthermore, the study recorded a respondent score of 39.30% on the preferable use of traditional treatment on snake-bite victim than the expected medical treatment (31.84%), creating an understanding that the people of Kumba are still very much dependent on the ancient methods of treating snake-bite victims. The Kumba city dwellers need education on the snake behaviour, venomous and non venomous species around their area and the ecological and medical importance of snakes.
Abstract ─ The soil-litter system is the natural habitat for a wide variety of organisms, microorganisms and invertebrates, with differences in size and metabolism, which are responsible for numerous functions. The soil mesofauna is composed of animals of body diameter between 100 μm and 2 mm, consisting of the groups Araneida, Acari, Collembola, Hymenoptera, Diptera, Protura, Diplura, Symphyla, Enchytraeidae (Oligochaeta), Isoptera, Chilopoda, Diplopoda and Mollusca. These animals, extremely dependent on humidity, move in the pores of the soil and at the interface between the litter and the soil. The edaphic fauna, besides having a great functional diversity, presents a rich diversity of species. As a result, these organisms affect the physical, chemical and, consequently, the biological factors of the soil. Therefore, the edaphic fauna and its activities are of extreme importance so that the soil is fertile and can vigorously support the vegetation found there, being spontaneous or cultivated. The composition, distribution and density of the edaphic acarofauna varies according to the soil depth, mites size, location and the season of the year. Edaphic mites are generally found in greater quantities in the organic matter layer than in the soil mineral. The subclass Acari is divided in seven orders being the Mesostigmata, Trombidiformes, Endeostigmata and Sarcoptiformes those that frequently occur in the soil. In the order Sarcoptiformes the suborder Oribatida (formerly Cryptostigmata) is one of the more numerous groups of soil arthropods, both in number of species and specimens. Considering the above facts, it was the objective of this work to know the acarofauna of the soil in a coffee plantation and rank the taxa in a decreasing way, by the use of faunistic analysis. The soil samples were taken in coffee plantation in the Experimental Station of EPAMIG, in São Sebastião do Paraíso, MG, Brazil, in two periods, end of dry and end of rainy season of the year 2013, and the extraction of edaphic mites of the soil mesofauna was done at the Laboratory of Acarology of EPAMIG Sul/EcoCentro, in Lavras, as well as other activities related to the study. The result show that edaphic mites of the cohort Astigmatina and suborder Oribatid are dominant in both periods studied, and can be worked to be an indicative of soil quality.
Assessment of Endophytic Fungal Flora Responsible for Plant Growth Promotion...Sryahwa Publications
The present paper discusses the highest colonization of fungal endophytes as Alternaria speciesin comparison with Colletotrichumspecies and Fusarium species in all three plants Pongamia pinnata, Securinega leucopyrus and Rhus mysorensis. These endophytic fungi protect these plants from various
environmental factors such as temperature, moisture and other environmental factors.
Apartamentos Minha casa Minha Vida.
ENTRADA PARCEADA EM ATÉ 24X IGUAIS Empreendimento com boa localização (perto da Estação do Metrô e da Supervia) com toda infraestrutura de lazer jamais vista na Região. Próximo ao Carioca Shopping, Mercadão de Madureira, Norte Shopping, Extra Pilares e Engenhão 2 Quartos, Sala, Cozinha, Área de serviço e Banheiro. Lazer: Salão de festas, Piscina adulto e infantil, Churrasqueira, Playground,Praça de jogos, Fitness externo, praça do descanso e bicicletário. Dependendo da renda e FGTS a entrada pode ser zero Pode juntar renda até 3 pessoas Entrada parcelada Subsídio de até 25.000 do Governo
Entrada totalmente parcelada
Sandra Cruz
Corretora de Imóveis RJ Creci: 064429/o
(21)9 7673-7747 WhatsApp
sandracruzdantas.rj@gmail.com
www.cruzdantas.com.br
El nivel de competencia que hoy existe en los mercados
demanda de las empresas resultados extraordinarios. El
programa de negociación realiza un recorrido desde los principios de la negociación, su metodología, el impacto de las
relaciones interpersonales sobre la misma, hasta las experiencias
y recomendaciones de las mentes más brillantes en la
materia, ofreciendo las mejores tácticas y estrategias para una
negociación efectiva.
Free Range Livestock Influence Species Richness, Occupancy, and Daily Behavio...UniversitasGadjahMada
In some developing countries, human activities in protected areas threaten wildlife populations and their habitats. This study was conducted to understand the influences of freerange livestock on the wild mammalian population in Baluran National Park, Indonesia. There were 3,852 and 1,156 cows and goats, respectively, and livestock occupied an area of approximately 55.96 km2. The species richness and probability of occupancy in areas with and without livestock were assessed, and the spatial co-occurrence and overlap of daily activity patterns among mammalian species and livestock were measured. A total of 39 camera traps were installed from August 2015 to January 2016, collecting 23,021 independent photographs. In areas with livestock, the number of mammal species (eight) was lower than in areas without livestock (11 species). The most affected species were the large herbivores Bubalus bubalis and Bos javanicus, and a large carnivore Panthera pardus, all of which were absent in areas with livestock. Regardless of the feeding guild, the probability of
occupancy of almost all species declined in areas with livestock, except the medium herbivores Paradoxurus hermaphroditus and Hystrix javanica that showed a higher probability of occupancy. The species whose probability of occupancy declined were the carnivores Cuon alpinus and Prionailurus bengalensis; the herbivores Rusa timorensis, Tracypithecus auratus and Muntiacus muntjak; and the omnivore Sus scrofa. In the presence of livestock, R. timorensis and S. scrofa changed their activities from diurnal to nocturnal. Livestock affected most wild mammals in several ways, including by reducing the species richness, lessening the probability of occupancy and changing the daily activity patterns of many animals. This research recommends a significant reduction in the size of the range area for domestic livestock.
By nature of their size, grouping behaviour, and central position within most trophic webs, large terrestrial herbivores -- namely ungulates and elephants -- tend to be both keystone and umbrella species. Their proportionately large impacts on ecosystems extend both top-down (i.e. regulation of vegetation), but also bottom up (regulated their predators).
Species Diversity and Above-ground Carbon Stock Assessments in Selected Mangr...Innspub Net
Mangrove ecosystems are known for being the rainforest of the sea. Philippines is bestowed with this naturally rich mangrove ecosystem with diverse floral and faunal species. Despite this natural abundance, mangrove ecosystems are subjected to natural and human induced degradations specifically conversion to fish shrimp ponds that resulted in diminution aside from its effect on terrestrial and oceanic carbon cycling and could also affect its important role in terms of terrestrial and oceanic carbon cycling. This study is conducted to determine
the mangrove diversity, distribution and the above-ground biomass and C-stocks in Glan and Malapatan, Sarangani Province. Purposive sampling is implemented in establishing the plots on both sites. Results show eight (8) mangrove species belonging to four (4) families are observed in both areas. Data also reveal that the mangrove ecosystem in Glan Padidu, Glan is undisturbed. Rhizophora apiculata and Sonneratia alba are found to be dominant on the two sites. Because of the large tree girths and high density of species observed on the studied areas, both forests have the potential to sequester and store large amount of atmospheric carbon. Thus, this study quantifies mangrove tree biomass in view of carbon trading as significant in lessening the effects of global warming.
By nature of their size, grouping behaviour, and central position within most trophic webs, large terrestrial herbivores -- namely ungulates and elephants -- tend to be both keystone and umbrella species.
Mangrove ecology and species distribution along the Gorai Creek of Mumbai coa...AI Publications
The extensive mangrove forest of Gorai Creek, Mumbai coast, has recently seen substantial deterioration. The results of a study on mangrove diversity conducted in Gorai Creek on the Mumbai coast from June 2017 to May 2018 are presented here. During the course of the study, twelve species of mangroves from five families and eight genera were identified in each of the three study locations along the creek. Avicennia marina accounted for 13.44% of the Gorai creek marshes, confirming its predominance. Sonneratia alba, Avicennia officinalis, Rhizophora apiculata, Bruguiera cylindrica, Kandelia candel, and Acanthus ilicifolius are among the mangrove species found in the estuarine embayment, with other species strewn around. A diverse range of species, including endangered migratory birds and herpetofauna, can be found in these mangrove environments. Mangroves have been observed to have narrowed in density with time, and it is critical to begin conservation efforts as speedily as humanly possible.
Human Wildlife Conflicts to communities surrounding Mikumi National Parks in ...IJEAB
Human wildlife interaction is not a new phenomenon, it has existed since the beginning of humankind, it is evidenced by the fact that, many national parks are surrounded by human residents. The interaction between human and wildlife is of different nature depending on the culture of the surrounding human as well as wildlife community. For decade’s human wildlife conflicts has been a great conservation challenge due to increased human population, international trade and change of policies. The challenge is more significant in a sense that it negatively affects both human and wildlife sustainability. Therefore a study was conducted to villages surrounding Mikumi national Park to assess reasons for conflicts between human and wildlife and account how communities prevent wild animals to destructs their agriculture products. Three villages were selected for study (Doma, Maharaka and Mkata, all villages surrounds Mikumi National Park Ecosystems. Different methodology includes: - Field observation, Household survey, Field interview, In-depth interview and Ethnography study were used. However descriptive analysis and non parametric test were performed by using SPSS 16 versions and Kruskal-wallis test respectively to compute mean, standard error, percentages and differences of wildlife consumption. Results suggests that, there is a gradual increase of human-wildlife conflicts which lead to loss of people’s lives, as well as their livelihoods such as farms and farms product. Statistically results depicted that the average size of the farm affected at Doma, Maharaka and Mkata villages were 3.8 ± 0.1, 2.0 ± 0.1 and 2.2 ± 0.1 acres respectively, while at Mkata village 32 goats, 24 sheep and 76 cattle were reported to be killed by wild carnivores. In other way conflicts may result to poaching activities which may threaten the existence of huge herbivores such as Elephants and Rhinoceros. Apart from that, conflicts may lead to poor performances of tourism industry in the country. Research recommends that more efforts should be taken by the government and other stakeholders to prevent conflicts around all national parks so as to create good and conducive environment for human being life and wildlife in order to allow good performance of tourism industry for economic development of the country.
PhD confirmation - ecology of estuarine sharks & rayssharonle
This is a ppt that was used in my confirmation for candidature. It describes how I will use stable isotope and fatty acid analysis to determine what estuarine sharks and rays eat and which areas of the South Alligator River, (NT, Aus) they utilise. This will then inform environmental managers of which areas are critical to the survival of these species.
PhD confirmation - ecology of estuarine sharks & rays
pre print
1. Journal of Herpetology, Vol. 0, No. 0, 000–000, 0000
Copyright 2016 Society for the Study of Amphibians and Reptiles
Dining in the City: Dietary Shifts in Indian Rock Agamas across an Urban–Rural
Landscape
SHASHANK BALAKRISHNA,1
ANURADHA BATABYAL,2
AND MARIA THAKER
2,3
1
Department of Zoology, St. Josephs College, #36 Langford Road, Bangalore, India
2
Centre for Ecological Sciences, Indian Institute of Science, Bangalore, India
ABSTRACT.—Rapid urbanization is a growing threat to biodiversity, causing wide-scale extirpation of species from their natural
habitats. Some species however, such as rock agamas, Psammophilus dorsalis, seem to be sufficiently tolerant and continue to persist in
urban environments. Given that urbanization alters species composition at multiple trophic levels, we expect a shift in the diet
composition and hunting modes of populations across rural and urban areas. Based on identified contents from stomach flushes, we
found that P. dorsalis are generally myrmecophagous, and their diet is mainly composed of ants (Hymenoptera: Formicidae). Diet of
males and females in each area overlapped highly (80–91%), even though males were significantly larger than females. Dietary overlap
between urban and rural populations also was high (80.3%). Surprisingly, rural lizards had lower body mass indices than did urban
lizards, despite the greater diversity of prey types and the larger volume of food consumed. This species uses a sit-and-wait hunting
strategy, but we found that the rate of movement of males was higher in rural areas compared to urban areas, which likely results in
higher energy expenditure. Individuals of P. dorsalis do not seem to be negatively affected by urbanization but instead manage to hunt
in and around the small patches of vegetation that remain, enabling them to maintain a higher body condition than that of lizards in
undisturbed rural habitats.?1
Habitat degradation, as a consequence of urbanization, has
impacted herpetofaunal diversity in a devastating way world-
wide (Gibbons et al., 2000; Cushman, 2006), especially when
urban development occurs in areas that support high native
species richness (Lugo, 2002). Urbanization of such areas results
in a matrix of unsuitable habitats within the biogeographical
range of a species. The effects of such fragmentation on native
organisms can be a function of many simultaneous environ-
mental alterations, such as changes in the type of vegetation
(Vallan, 2002), the sizes and shapes of fragments (Scott et al.,
2006), and the type of anthropogenic activity (Greenberg et al.,
1994; Ryan et al., 2002). One of the first consequences of habitat
fragmentation attributable to urbanization is the reduction in
population size of native species and the subsequent demo-
graphic and genetic structure changes that increase the
probability of local extirpation (Gilpin and Soule, 1986, but
see Luniak, 2004; Møller, 2009).
Studies along natural environmental gradients consistently
record changes in lizard species composition (e.g., Whiting et
al., 2005; Pelegrin et al., 2009; D’Cruze and Kumar, 2011),
typically attributable to the differences in the availability of
suitable habitats for activity (e.g., nesting and basking) or of
suitable prey to consume. Urbanization, however, is a very
common but extreme environmental condition, and lizard
species assemblages are known to decline with anthropogenic
disturbance (Germaine and Wakeling, 2001). The effects of
urbanization, however, remain understudied, because we still
lack a comprehensive understanding of the strategies that
enable survival, especially for lizards that seemingly persist in
urban environments (but for birds and mammals, see Luniak,
2004; for birds, Møller, 2009). Because rapid adaptations to
changes in available and limiting resources are important to the
survival of an organism (Carroll et al., 2007), we expect lizards
living in urban environments at least to show flexibility and
shifts in their diet, as commonly reported in birds and mammals
(Daniel et al., 2013).
In lizards, diet composition can be influenced by multiple
factors, including the mode of hunting (Pianka, 1966). Lizards
with a sit-and-wait hunting strategy target prey that are
actively moving through the environment, whereas widely
foraging lizards consume prey that are relatively sedentary,
unpredictably distributed, and clumped (Huey and Pianka,
1981). Regardless of their hunting mode, most lizards are
thought to be opportunistic feeders (Parker and Pianka, 1975).
For example, populations of Phrynosoma platyrhinos and
Phrynosoma solare persist in urban reserves of central Arizona
mainly because of the presence of seed-harvester ants
(Pogonomyrmex rugosus) but are apparently absent in some
surveyed reserves because of the direct impact of anthropo-
genic disturbance on their habitat (Sullivan et al., 2014). ?2For
these species, survival in urban areas is possible because of the
flexibility in diet and a tolerance for some level of anthropo-
genic disturbance. Therefore, an effective and flexible foraging
strategy can allow the persistence of species in disturbed
environments.
Like many developing countries in the world, urbanization in
India is increasing at a rapid pace, and much of the native
biodiversity is increasingly being lost. Several species, however,
seem to be sufficiently tolerant and continue to persist in
completely altered urban environments. One such species is the
Rock Dwelling Agama, Psammophilus dorsalis, which have a
widespread distribution throughout the Indian peninsula and is
seen up to 1,800 m above mean sea level (Daniel, 2002). To
understand the persistence of P. dorsalis despite anthropogenic
disturbance, we examined the diet composition, hunting
behavior and body condition of this species from both urban
and rural populations. Given the dramatic differences in the
local environment (see description below) and the prevailing
assumption that urban habitats are less suitable than natural
habitats, we expect to find shifts in these traits such that lizards
in urban areas will have lower activity and movement, a
narrower diet, and lower body condition than those living in
rural areas.
3
Corresponding Author. E-mail: mthaker@ces.iisc.ernet.in
DOI: 10.1670/14-073
//titan/production/h/hpet/live_jobs/hpet-50/hpet-50-02/hpet-50-02-05/layouts/hpet-50-02-05.3d Š 12 April 2016 Š 7:42 pm Š Allen Press, Inc. Š CUSTOMER NO. 14-073R4 Page 1
2. MATERIALS AND METHODS
Study Species and Areas.—Psammophilus dorsalis are common
agamas found in semiarid habitats across India. This species
shows distinct sexual dimorphism, where males are larger and
more brightly colored than females (Daniel, 2002). We conducted
this study in the greater Bangalore city region (India). The urban
study site was situated within the city of Bangalore in a suburban
area (13810
2600
N 778390
5900
E; datum WGS84) containing mostly
houses separated by empty plots that were overgrown with the
invasive plant Lantana camara (Fig. 1A). The lizards in this site
were restricted to fragmented areas with vegetation and were
typically found basking on ledges and walls of concrete
buildings. The rural study site was located near Antharagange
forest range in Kolar district (138080
2500
N 788050
4800
E; datum
WGS84), 62 km east of the urban study area. This site has low
hills with large boulders, surrounded by Opuntia sp. and other
small native bushes and trees. The invasive shrub L. camara was
also found at the rural site (Fig. 1B) and lizards in that area were
typically found perching on boulders.
Dietary Analyses.—Forty-nine lizards (urban: N = 13 males and
8 females; rural: N = 15 males and 13 females) were captured
between 1000–1600 h from August to November 2012, during the
end of the breeding season. Only adult lizards with snout to vent
length (SVL) > 70 mm were included in the study (SVL range:
rural: males = 94–138 mm and females = 75–96 mm; urban:
males = 121–146 mm and females = 74–108 mm). Within 15 min
of capture by noosing, all lizards were stomach flushed using the
protocol for stomach flushing lizards and anurans (Legler and
Sullivan, 1979; Sole´ et al., 2005). We used stomach flushing over
fecal pellet examination to determine diet of free-ranging lizards,
because fecal pellets are small and difficult to find amid
vegetation. The stomach contents were stored in vials containing
70% ethanol and transported to the laboratory where they were
identified to the level of order. Each prey item was considered an
operative taxonomic unit (OTU). These sample sizes were
determined sufficient, based on the Chao 2 nonparametric
estimator (Chao, 1987; Chao et al., 2009) and accumulation
curves of prey taxa found in the stomachs.
Frequency of occurrence (FO) of each prey type for males and
females at each site was calculated as:
FO=
Sð100Þ
N
where S is the number of samples containing each prey type and
N is the total number of samples. Percent of relative occurrence
(RO) was calculated as:
RO=
pð100Þ
T
where p is the number of occurrences of each prey type and T is
the occurrence of all prey types in all samples, therefore
representing the relative importance of a given food type in
the diet (Loveridge and Macdonald, 2003). For each sex and for
lizards at each site, we determined the most dominant prey item
using an index of relative importance (Pianka, 1973):
IRIt=ðPotÞðPIt+PVtÞ
where POt = percentage of occurrence (number of stomachs
that contained ‘‘t’’ item / total number of stomachs ·100), PIt =
percentage of individuals (total number of individuals of ‘‘t’’ in
all stomachs / total number of individuals of all taxa in all
stomachs · 100), and PVt = percentage of volume (total volume
of individuals of ‘‘t’’ in all stomachs / total volume of all taxa in
all stomachs). For the IRIt calculation, the volume of each prey
item was calculated assuming an ellipsoid body (Griffiths and
Mylotte, 1987), such that:
V=
4p
3
L
2
W
2
2
where L = the length of the prey and W = width of the prey. We
used a two-way ANCOVA to compare the volume of food
consumed between sexes and across sites using the number of
fragments as the covariate. All statistical analyses were
conducted in SPSS 20.0 (IBM). Finally, we calculated dietary
overlap (Pianka, 1973) between sexes and sites using the
formula
Oxy=
RXiYi
ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi
RX2
i RY2
i
r
where, Xi is the relative frequency of occurrence of food item ‘‘i’’
in one population and Yi is the relative frequency of occurrence
of food item ‘‘i’’ in another population.
Data on Hunting Behavior and Body Size.—We conducted focal
observations of 80 lizards (urban: N = 20 males and 20 females;
rural: N = 20 males and 20 females) between 1000 and 1300 h and
FIG. 1. Example of sampling sites in (A) urban and (B) rural habitats in and around Bangalore, India.
//titan/production/h/hpet/live_jobs/hpet-50/hpet-50-02/hpet-50-02-05/layouts/hpet-50-02-05.3d Š 12 April 2016 Š 7:42 pm Š Allen Press, Inc. Š CUSTOMER NO. 14-073R4 Page 2
0 S. BALAKRISHNA ET AL.
3. from 1600–1700 h when lizards are most active. Observations
were conducted from June to September 2014, toward the end of
the breeding season when females were not likely to be gravid.
During the focal observations, two observers would stand at
approximately 20 m from a focal lizard on opposite sides and
continually record the lizard’s movements using Sonyt HDR-
CX330 and Canont EOS 500D digital cameras. Undisturbed
recording for durations of 10 min were taken for each lizard. To
maximize the probability of capturing hunting activity, data were
not collected from lizards that were in a thigmothermic body
posture (showing a possible sign of basking), exhibiting tail raises
or head bobs, or were actively involved in social interactions. Of
the 80 observations, four observations from the rural site (N = 3
males and 1 female) and three observations from the urban site
(N = 1 male and 2 females) lasted only for approximately 5 min
because these lizards moved out of view during the recording.
We did not obtain stomach contents from these lizards because
we wanted to minimize stress caused by gut flushing and
because we had already obtained a sufficient sample size for
dietary information (see above).
Typical of other agamas, P. dorsalis uses a sit-and-wait hunting
mode (Miles et al., 2007). From the videos, we quantified the
differences in hunting activity between urban and rural
populations using two robust measures: movements per minute
(MPM) and percent of total time spent moving (PTM) (similar to
Cooper et al., 2013). Proportion of prey attacks initiated while
moving or when immobile were infrequent events and were not
the target of focal observations, because recording these
behaviors are known to prolong observations and hinder
multiple comparisons (Cooper and Whiting, 2000). Given the
heteroscedasticity of the hunting activity variables, we used
non-parametric Kruskal–Wallis one-way analysis of variance to
determine behavioral differences between sexes and across
populations.
Finally, to compare the body condition of lizards across urban
and rural habitats, we recorded body mass (g) and SVL (mm)
from a total of 185 lizards (urban: N = 70 males and N = 36
females; rural N = 37 males and N = 42 females). As a measure
of body condition, we calculated the Body Mass Index (BMI)
which is the ratio of body mass (g) to the square of SVL (mm2
).
We used a two-way ANOVA with Tukey’s post-hoc tests to
compare BMI between sexes and across sites.
RESULTS
Of the 49 lizards captured and gut flushed, five lizards
(urban: N = 2 males and N = 1 female; rural: N = 2 females) had
an empty stomach, and one lizard yielded just one prey item (N
= 1 rural male). Based on the gut contents of the rest, we found
the diet of P. dorsalis to consist mainly of arthropods, of which
Hymenoptera: Formicidae was the predominant prey taxon
consumed (Table 1).
In the urban habitat, lizards fed mainly on Hymenoptera:
Formicidae with ants being the most common prey item,
occurring in 100% (FO) of the samples for both sexes (Table 2).
Considering all prey items, ants constituted 37.1% (RO) of the
diet of males and 26.6% (RO) of females in the urban habitat
(Table 2). Apart from ants, urban females ate mainly Hyme-
noptera (75% FO) and Coleoptera (62.5% FO), whereas urban
males ate Heteroptera (53.8% FO) and Diptera (46.1% FO). All
other prey items contributed to less than 38% of the samples
collected from urban lizards (Table 1). Prey from three orders,
namely Neuroptera, Isoptera, and Orthoptera, were absent in
the diet of urban male lizards, but Orthoptera was found in
small quantities in the diet of urban female lizards.
In the rural habitat, Formicidae also dominated the diet of
lizards, occurring in 60% of samples (FO) in males and 76.9%
(FO) in females. As a consequence, 15.3% (RO) of the diet of
rural males and 21.2% of the diet of rural females consisted of
ants (Table 2). For rural males, prey items from the orders
Diptera (20.5% RO) and Orthoptera (15.3% RO) were common,
whereas for rural females, prey items from Hymenoptera (19.1%
RO) and Lepidoptera (17.0% RO) were common. Other prey
items contributed to less than 15% of the diet of rural lizards
(Table 2).
Information on diet composition can be used to understand
the degree of niche overlap within (Rocha and Anjos, 2007) and
across species (Ortega-Rubio et al., 1995; Vieira and Port, 2007).
TABLE 1. Absolute prey numbers for males and females of
Psammophilus dorsalis from urban and rural habitats.
Order
Rural Urban
Male Female Male Female
Hymenoptera:Formicidae 35 45 105 72
Other Hymenoptera 6 10 7 8
Lepidoptera 7 9 2 2
Diptera 14 3 7 4
Coleoptera 12 5 2 8
Heteroptera 4 7 10 5
Neuroptera 2 4 0 0
Isoptera 3 4 0 0
Orthoptera 6 7 0 2
TABLE 2. Frequency of occurrence (FO), relative occurrence (RO) and the index of relative importance for males and females of Psammophilus
dorsalis from urban and rural habitats.
Order
Frequency of occurrence Relative occurrence Index of relative importance
Rural Urban Rural Urban Rural Urban
Male Female Male Female Male Female Male Female Male Female Male Female
Formicidae 60.0 76.9 100 100 15.3 21.2 37.1 26.6 3,817.2 6100.5 15,214.3 12,891.1
Hymenoptera 30.0 69.2 38.4 75.0 7.6 19.1 14.2 20.0 3,84.6 1442.6 476.4 12,95.2
Lepidoptera 50.0 61.5 15.3 25.0 12.8 17.0 5.7 6.6 1,284.0 2007.7 101.7 196.2
Diptera 80.0 15.3 46.1 37.5 20.5 4.2 17.1 10.0 2,374.8 95.3 566.3 320.9
Coleoptera 50.0 23.0 15.3 62.5 12.8 6.3 5.7 16.6 1,583.1 298.6 69.9 1,368.4
Heteroptera 30.0 30.7 53.8 50.0 7.6 8.5 20.0 13.3 1,88.7 326.5 648.0 377.1
Neuroptera 10.0 30.7 0 0 2.5 8.5 0 0 24.6 144.3 0 0
Isoptera 20.0 15.3 0 0 5.1 4.2 0 0 1,08.6 108.0 0 0
Orthoptera 60.0 38.4 0 25.0 15.3 10.6 0 6.6 1,340.2 990.6 0 199.3
//titan/production/h/hpet/live_jobs/hpet-50/hpet-50-02/hpet-50-02-05/layouts/hpet-50-02-05.3d Š 12 April 2016 Š 7:42 pm Š Allen Press, Inc. Š CUSTOMER NO. 14-073R4 Page 3
DIET OF PSAMMOPHILUS DORSALIS ACROSS AN URBAN–RURAL LANDSCAPE 0
4. Based on the index of relative importance, ants dominated the
diet of the lizards in both the urban and rural habitats; however,
this domination was less in rural compared to urban lizards
(Table 2). Other prey types contributed minimally to the dietary
composition of urban lizards, whereas more prey types were
found in rural lizards (Table 2). Overall, the dietary overlap of
males and females was high in both the urban habitat (91.1%)
and the rural habitat (80.6%). When comparing across urban
and rural sites, the overlap in diet of males was 74.3%, whereas
that of females was 87.7%. Regardless of sex, rural and urban
lizards overlapped in their diets by 80.3%. Despite this, the
volume of food consumed was lower in urban populations
compared to rural, and this difference was greater for males
than for females (F1,37 for interaction = 4.80, P = 0.035).
As expected, males had greater BMI (F1,181 = 83.62, P 0.001)
than did females in both urban and rural habitats. Interestingly,
however, lizards from the urban population had significantly
greater BMI (F1,181 = 37.56, P 0.001, Fig. 2) than those from
rural populations. There was no significant interaction effect of
site and sex for BMI.
From the focal observations of lizards, we found that rural
males had higher MPM (v2
= 4.11, df = 1, P = 0.039) and PTM
(v2
= 4.11, df = 1, P = 0.039) compared to urban males (Fig. 3).
There was no statistical difference in the activity measures of
females between urban and rural populations. There also was
no difference in activity between the sexes at each site.
DISCUSSION
An environmental gradient from undisturbed to urbanized
represents a dramatic environmental axis with which many
organisms currently face (McDonnell and Pickett, 1990). The
geographical distribution of P. dorsalis is widespread, and this
species does not seem to be negatively affected by urbanization,
because individuals in urban habitats are larger and have a
better body condition than do those in rural habitats. The ability
to survive in anthropogenic areas, therefore, requires changes in
behavior. Based on our observations of the hunting behavior
and diet of P. dorsalis, we find that these lizards consume mainly
ants. This myrmecophagous behavior of P. dorsalis is magnified
in the urban habitat, which is not surprising given that
Hymenoptera is the most abundant insect order found in urban
Bangalore (Jaganmohan et al., 2013). By comparison, lizards in
the rural habitat had a wider range of prey items in their total
dietary composition.
Observations of hunting activity in P. dorsalis revealed some
key differences between urban and rural populations. Rural
males showed greater activity than did urban males, as
measured by their movements per minute and the percent of
total time spent moving. Changes in foraging strategies in urban
environments have been seen in other taxa as well (Luniak,
2004; Møller, 2009; Daniel et al., 2013). For example, individuals
of Macaca tonkeana in heavily altered human habitats spend
more time foraging but less time moving compared to those
from minimally altered human habitats (Riley, 2007). Similar to
M. tonkeana, dietary diversity in P. dorsalis was lower in the
heavily human-altered habitats. The greater movement and
greater amount of food consumed by rural males of P. dorsalis,
however, does not seem to increase body condition. The higher
energy expenditures of the rural males as expected by the
greater movement and the need to patrol larger territories
(unpubl. data) may, instead, explain their smaller body size and
lower body condition compared to urban males (Huey and
Pianka, 1981). Although no social displays were seen during the
observation period, movement patterns recorded for these
urban and rural males may be related to both general hunting
strategies as well as territory defense. Female lizards from urban
habitats were also heavier, despite the higher overlap in diet
between females across sites and the lack of a difference in
foraging. Increase in body size in urbanized environments could
convey an increase in reproductive capacity (Lowe et al., 2014).
FIG. 2. Body mass index (g/mm2
) of males and females of
Psammophilus dorsalis from rural and urban sites. Bars represent mean
6 1 SE. FIG. 3. Foraging behaviors of rural and urban males: movements per
minute (MPM) and percent of total time spent moving (PTM). Bars
represent mean 6 1 SE.
//titan/production/h/hpet/live_jobs/hpet-50/hpet-50-02/hpet-50-02-05/layouts/hpet-50-02-05.3d Š 12 April 2016 Š 7:42 pm Š Allen Press, Inc. Š CUSTOMER NO. 14-073R4 Page 4
0 S. BALAKRISHNA ET AL.
5. Given the striking sexual dimorphism in P. dorsalis, we were
not surprised that differences in diet composition between the
sexes were more apparent than differences across habitats.
Besides the most dominant prey (Formicidae), Diptera and
Heteroptera were the second most frequently occurring and the
second dominant prey item found in males from both rural and
urban sites. Prey members of Diptera and a few members of
Heteroptera are capable of flight, which is consistent with the
observation that males perch higher than females throughout
the year and especially during the breeding season (Radder et
al., 2006), enabling better access to aerial prey. Lepidoptera
(mainly caterpillars) and Hymenoptera (mainly wasps/bees)
were the second most dominant and frequently occurring prey
items in rural females and urban females, respectively. Given
that females perch at lower heights on rock substratum than do
males, females are more likely to encounter such prey items at
either habitat if they forage widely.
Although we found only invertebrate prey in the stomachs of
P. dorsalis, others have observed the consumption of vertebrate
prey. Sreekar et al. (2010) recorded the occurrence of an adult
male P. dorsalis feeding on Hemidactylus treutleri in a rural
habitat, and Balakrishna (2014) reported an adult female P.
dorsalis feeding on a juvenile Rattus rattus in the urban habitat.
These observations suggest that the diet of the individuals of P.
dorsalis can be very diverse and is not greatly constrained by
anatomy or morphology. Prey availability in our study areas is
unknown, but given the diversity of prey in the diet and their
hunting strategy, P. dorsalis are likely to be opportunistic
foragers.
In sum, P. dorsalis are generalist foragers, with a predomi-
nantly myrmecophagous diet. We found a high degree of
dietary overlap between the sexes and across urban and rural
areas. The range of secondary prey constituents, which includes
smaller vertebrates, indicate that this species can exploit a
diverse array of prey items. Although multiple other factors also
are known to affect the foraging behavior of lizards (Cooper et
al., 2006; Werner et al., 2006), a generalist and sit-and-wait
hunting strategy that includes myrmecophagy (similar to
Sullivan et al., 2014) seems to allow the survival of P. dorsalis
in a range of habitats. Because ant abundance, especially of
those species that are tolerant of disturbance, can be high in
urbanized areas (Buczkowski and Richmond, 2012), a hunting
strategy to include this common prey can be effective. Contrary
to expectation, individuals of P. dorsalis do not seem to be
negatively affected by urbanization but instead manage to
successfully hunt in and around the small patches of vegetation
that remain. This, in turn, could enable them to maintain a
better body condition than lizards in undisturbed rural habitats.
Acknowledgments.—We thank A. T. Vanak, K. S. Seshadri, and
two anonymous reviewers for comments on an earlier version
of this manuscript. This species is not covered under the
Schedules of the Indian Wildlife (Protection) Act; therefore,
collection permits are not required. All capture and handling
methods were approved by the Institutional Animal Ethics
Committee at the Indian Institute of Science (CAF/Ethics/394/
2014).
LITERATURE CITED
BALAKRISHNA, S. 2014. Predation of black rat Rattus rattus (Rodentia:
Muridae) by the rock lizard Psammophilus dorsalis (Squamata:
Agamidae) from suburban Bangalore, Karnataka. Herpetology
Notes 7:519–520.
BUCZKOWSKI, G., AND D. S. RICHMOND. 2012. The effect of urbanization on
ant abundance and diversity: a temporal examination of factors
affecting biodiversity. PLoS ONE 7:e41729.
CARROLL, S. P., A. P. HENDRY, D. N. REZNICK, AND C. W. FOX. 2007.
Evolution on ecological time-scales. Functional Ecology 21:387–393.
CHAO, A. 1987. Estimating the population size for capture-recapture data
with unequal catchability. Biometrics 43:783–791.
CHAO, A., R. K. COLWELL, C. W. LIN, AND N. J. GOTELLI. 2009. Sufficient
sampling for asymptotic minimum species richness estimators.
Ecology 90:1125–1133.
COOPER, W. E., JR, AND M. J. WHITING. 2000. Ambush and active foraging
modes both occur in the scincid genus Mabuya. Copeia 2000:112–118.
COOPER, W. E., JR, V. PEREZ-MELLADO, AND D. HAWLENA. 2006. Magnitude
of food reward affects escape behavior and acceptable risk in Balearic
lizards, Podarcis lilfordi. Behavioural Ecology 17:554–559.
COOPER, W. E., JR, G. CASTANEDA, C. G. DE LA PENA, B. WILSON, J. P.
CALDWELL, AND L. J. VITT. 2013. Foraging modes of some Jamaican,
Costa Rican, and Mexican lizards. Herpetology Notes 6:591–597.
CUSHMAN, S. A. 2006. Effects of habitat loss and fragmentation on
amphibians: a review and prospectus. Biological Conservation 128:
231–240.
DANIEL, J. C. 2002. The Book on Indian Reptiles and Amphibians. Oxford
University Press, India.
DANIEL, S., O. LAPIEDRA, AND C. GONZALEZ-LAGOS. 2013. Behavioural
adjustments for a life in the city. Animal Behaviour 85:1101–1112.
D’CRUZE, N. C., AND S. KUMAR. 2011. Effects of anthropogenic activities
on lizard communities in northern Madagascar. Animal Conserva-
tion 14:542–552.
GERMAINE, S. S., AND B. F. WAKELING. 2001. Lizard species distributions
and habitat occupation along an urban gradient in Tucson, Arizona,
USA. Biological Conservation 97:229–237.
GIBBONS, J. W., D. E. SCOTT, T. J. RYAN, K. A. BUHLMANN, T. D. TUBERVILLE, B.
S. METTS, J. L. GREENE, T. MILLS, Y. LEIDEN, S. POPPY ET AL. 2000. The
global decline of reptiles, de´j `a vu amphibians. Bioscience 50:653–666.
GILPIN, M. E., AND M. E. SOULE. 1986. Minimum viable populations:
processes of species extinction. Pp. 19–34 in M. E. Soule (ed.),
Conservation Biology: The Science of Scarcity and Diversity. Sinauer
Associates, USA.
GREENBERG, C. H., D. G. NEARY, AND L. D. HARRIS. 1994. Effect of high-
intensity wildfire and silvicultural treatments on reptile communities
in sand-pine scrub. Conservation Biology 8:1047–1057.
GRIFFITHS, R. A., AND V. J. MYLOTTE. 1987. Microhabitat selection and
feeding relations of smooth and warty newts, Triturus vulgaris and T.
cristatus, at an upland pond in mid-Wales. Holarctic Ecology 10:1–7.
HUEY, R. B., AND E. R. PIANKA. 1981. Ecological consequences of foraging
mode. Ecology 62:991–999.
JAGANMOHAN, M., L. S. VAILSHERY, AND H. NAGENDRA. 2013. Patterns of
insect abundance and distribution in urban domestic gardens in
Bangalore, India. Diversity 5:767–778.
LEGLER, J. M., AND L. J. SULLIVAN. 1979. The application of stomach-
flushing to lizards and anurans. Herpetologica 35:107–110.
LOVERIDGE, A. J., AND D. W. MACDONALD. 2003. Niche separation in
sympatric jackals, Canis mesomelas and Canis adustus. Journal of
Zoology 259:143–153.
LOWE, E. C., S. M. WILDER, AND D. F. HOCHULI. 2014. Urbanization at
multiple scales is associated with larger size and higher fecundity of
an orb-weaving spider. PLoS ONE 9:e105480.
LUGO, A. E. 2002. Can we manage tropical landscapes? An answer from
the Caribbean perspective. Landscape Ecology 17:601–615.
LUNIAK, M. 2004. Synurbization—adaptation of animal wildlife to urban
development. Proceedings 4th International Urban Wildlife Sympo-
sium, United States.
MCDONNELL, M. J., AND S. T. A. PICKETT. 1990. Ecosystem structure and
function along urban–rural gradients: an unexploited opportunity
for ecology. Ecology 71:1232–1237.
MILES, D. B., J. B. LOSOS, AND D. J. IRSCHICK. 2007. Morphology,
performance, and foraging mode. Pp. 49–93 in S. M. Reilly, L. D.
McBrayer, and D. B. Miles (eds.), Lizard Ecology. Cambridge
University Press, U.K.
MØLLER, A. P. 2009. Successful city dwellers: a comparative study of the
ecological characteristics of urban birds in the Western Palearctic.
Oecologia 159:849–858.
ORTEGA-RUBIO, A., A. GONZALEZ-ROMERO, AND R. BARBAULT. 1995. Food
analysis and resource partitioning in a lizard guild of the Sonoran
Desert, Mexico. Journal of Arid Environments 29:367–382.
//titan/production/h/hpet/live_jobs/hpet-50/hpet-50-02/hpet-50-02-05/layouts/hpet-50-02-05.3d Š 12 April 2016 Š 7:42 pm Š Allen Press, Inc. Š CUSTOMER NO. 14-073R4 Page 5
DIET OF PSAMMOPHILUS DORSALIS ACROSS AN URBAN–RURAL LANDSCAPE 0
6. PARKER, W. S., AND E. R. PIANKA. 1975. Comparative ecology of
populations of the lizard Uta stansburiana. Copeia 1975:616–632.
PELEGRIN, N., J. M. CHANI, A. L. ECHEVARRI´A, AND E. H. BUCHER. 2009.
Effects of forest degradation on abundance and microhabitat
selection by ground dwelling Chaco lizards. Amphibia–Reptilia 30:
265–271.
PIANKA, E. R. 1966. Convexity, desert lizards, and spatial heterogeneity.
Ecology 47:1055–1059.
———. 1973. The structure of lizard communities. Annual Review of
Ecology and Systematics 4:53–74.
RADDER, R. S., S. K. SAIDAPUR, AND B. A. SHANBHAG. 2006. Big boys on the
top: effects of body size, sex and reproductive state on perching
behaviour in the tropical rock dragon, Psammophilus dorsalis. Animal
Biology 3:311–321.
RILEY, E. P. 2007. Flexibility in diet and activity patterns of Macaca
tonkeana in response to anthropogenic habitat alteration. Interna-
tional Journal of Primatology 28:107–133.
ROCHA, C. F. D., AND L. A. ANJOS. 2007. Feeding ecology of a nocturnal
invasive alien lizard species, Hemidactylus mabouia, living in an
outcrop rocky area in south-eastern Brazil. Brazilian Journal of
Biology 67:485–491.
RYAN, T. J., T. PHILIPPIA, Y. A. LEIDEN, M. E. DORCAS, T. B. WIGLEY, AND J. W.
GIBBONS. 2002. Monitoring herpetofauna in a managed forest
landscape: effects of habitat types and census techniques. Ecological
Management 167:83–90.
SCOTT, D. M., D. BROWN, S. MAHOOD, B. DENTON, A. SILBURN, AND F.
RAKOTONDRAPARANY. 2006. The impacts of forest clearance on lizard,
small mammal and bird communities in the arid spiny forest,
southern Madagascar. Biological Conservation 128:182–192.
SOLE´ , M., O. BECKMANN, B. PELZ, A. KWET, AND W. ENGELS. 2005. Stomach-
flushing for diet analysis in anurans: an improved protocol
evaluated in a case study in Araucaria forests, southern Brazil.
Studies on Neotropical Fauna and Environment 40:23–28.
SREEKAR, R., S. DEODHAR, AND Y. KULKARNI. 2010. Predation on Hemi-
dactylus treutleri (Squamata: Gekkonidae) by the peninsular rock
agama Psammophilus dorsalis (Squamata: Agamidae) in Rishi Valley,
Andhra Pradesh, India. Herpetology Notes 3:033–035.
SULLIVAN, B. K., K. O. SULLIVAN, D. VARDUKYAN, AND T. SUMINSKI. 2014.
Persistence of horned lizards, Phrynosoma sp., in urban preserves of
central Arizona. Urban Ecosystems 17:4–8.
VALLAN, D. 2002. Effects of anthropogenic environmental changes on
amphibian diversity in the rain forests of eastern Madagascar.
Journal of Tropical Ecology 18:725–742.
VIEIRA, E. M., AND D. PORT. 2007. Niche overlap and resource partitioning
between two sympatric fox species in Southern Brazil. Journal of
Zoology 272:57–63.
WERNER, Y. L., H. TAKAHASHI, Y. YASUKAWA, AND H. OTA. 2006. Factors
affecting foraging behaviour, as seen in a nocturnal ground lizard,
Goniurosaurus kuroiwae kuroiwae. Journal of Natural History 40:439–
459.
WHITING, M. J., R. SMART, AND W. TWINE. 2005. Lizards and landscapes:
integrating field surveys and interviews to assess the impact of
human disturbance on lizard assemblages and selected reptiles in a
savanna in South Africa. Biological Conservation 122:23–31.
Accepted: 26 January 2016.
//titan/production/h/hpet/live_jobs/hpet-50/hpet-50-02/hpet-50-02-05/layouts/hpet-50-02-05.3d Š 12 April 2016 Š 7:42 pm Š Allen Press, Inc. Š CUSTOMER NO. 14-073R4 Page 6
0 S. BALAKRISHNA ET AL.
7. Queries for hpet-50-02-05
1. Author: This article has been lightly edited for grammar, style, and usage. Please compare it with your original
document and notify managing editor of changes (see your e-mail for instructions). Please limit your corrections
to substantive changes that affect meaning. If no change is required in response to a question, please write ‘‘OK as
set’’ in the margin. Copyeditor
2. Author: Please provide the common names for Phrynosoma platyrhinos and Phrynosoma solare in the paragraph
beginning ‘‘In lizards, diet composition can be influenced by multiple factors . . .’’
//titan/production/h/hpet/live_jobs/hpet-50/hpet-50-02/hpet-50-02-05/layouts/hpet-50-02-05q.3d Tuesday, 12 April 2016 7:42 pm Allen Press, Inc. Page 1