- The study examined differences in crayfish abundance and diet between two habitats in Main Pond at Greenwing Laboratory: a shallow, open North habitat and a deeper, more vegetated West habitat.
- Crayfish abundance was higher in the North habitat and at intermediate distances (10m) from shore, but diet did not differ between habitats.
- While vegetative cover and other factors like depth and temperature affected crayfish distribution, diet was similar possibly because the same food sources were available throughout the pond.
Disturbance of benthic algae by spawning Pacific salmon in Thompson Creek, MIjmkosiara
This is a presentation of my undergraduate senior thesis project at LSSU. This study focused on the effects of spawning Pacific salmon on benthic algal biomass via nutrient enrichment and bioturbation
Aquatic Insect Similarity Connecting Natural Wetland Habitat and Ricefield fo...Innspub Net
This study describes the relationship of the natural wetland habitats in Agusan Marsh to nearby rice fields and its implication to ecological rice production. Aquatic insects play multiple roles in the ecosystem such as predators, prey to other animals and decomposers which help in maintaining ecological balance. Results revealed that the diversity of odonates was highest in the sedge-dominated swamp among natural habitats which corresponds to the adjoining ricefields. The pattern of clustering of odonates show 3 groups; the rice-sago and rice-sedges sub-cluster, the rice-bangkal, rice-Terminalia, rice-fern, bangkal, sago and sedges sub-cluster, and the Terminalia forest as the outlier. The diversity of semi-aquatic and aquatic bugs was highest in the Bangkal forest while the lowest was in the fern-dominated swamp. The pattern of clustering shows 2 sub-clusters and the outlier Bangkal forest. On aquatic beetles, highest diversity was in the Terminalia forest. The sub-cluster consists of Terminalia habitat and rice-fern, while the other sub-cluster includes rice-Bangkal and rice-Terminalia. The resulting patterns of similarity in diversity and distribution of species in natural habitats and nearby ricefields indicate that ricefields are important temporary habitats for some aquatic insect species and serve as stepping stones for the movement of the insects.
Disturbance of benthic algae by spawning Pacific salmon in Thompson Creek, MIjmkosiara
This is a presentation of my undergraduate senior thesis project at LSSU. This study focused on the effects of spawning Pacific salmon on benthic algal biomass via nutrient enrichment and bioturbation
Aquatic Insect Similarity Connecting Natural Wetland Habitat and Ricefield fo...Innspub Net
This study describes the relationship of the natural wetland habitats in Agusan Marsh to nearby rice fields and its implication to ecological rice production. Aquatic insects play multiple roles in the ecosystem such as predators, prey to other animals and decomposers which help in maintaining ecological balance. Results revealed that the diversity of odonates was highest in the sedge-dominated swamp among natural habitats which corresponds to the adjoining ricefields. The pattern of clustering of odonates show 3 groups; the rice-sago and rice-sedges sub-cluster, the rice-bangkal, rice-Terminalia, rice-fern, bangkal, sago and sedges sub-cluster, and the Terminalia forest as the outlier. The diversity of semi-aquatic and aquatic bugs was highest in the Bangkal forest while the lowest was in the fern-dominated swamp. The pattern of clustering shows 2 sub-clusters and the outlier Bangkal forest. On aquatic beetles, highest diversity was in the Terminalia forest. The sub-cluster consists of Terminalia habitat and rice-fern, while the other sub-cluster includes rice-Bangkal and rice-Terminalia. The resulting patterns of similarity in diversity and distribution of species in natural habitats and nearby ricefields indicate that ricefields are important temporary habitats for some aquatic insect species and serve as stepping stones for the movement of the insects.
..I.D.E.A.S. Ecosystem Facilitation offers a sustainable solution to maintaining retention ponds. This systems involves strategic plantings of native aquatic flora that will provide a filtration buffer for high nutrient run-off, further decreasing unwanted algal blooms and creating an area of high biodiversity.
FLORAL DIVERSITY OF MANGROVE ECOSYSTEM FROM COASTAL ENVIRONMENT OF URAN (RAIG...Prabhakar Pawar
Mangrove forests are among the world’s most productive ecosystems and are the only forests situated at the confluence of land and sea in tropical and subtropical latitudes.Mangroves are one of the biologically diverse ecosystems in the world, rich in organic matter and nutrients and support very large biomass of flora and fauna. With continuing degradation and destruction ofmangroves, there is a critical need to understand the biodiversity of the mangrove ecosystems.Mangroves represent spirit of Mumbai and NaviMumbai - they are plucky survivors. Each day, millions of citizens in Mumbai pass these hardy plants imaging they are little more than dirty, muddy weeds growing pointlessly along the shoreline. Overexploitation and unsustainable demand has resulted in considerable degradation of mangrove areas and it is feared that the area under mangroves around Mumbai areas has dwindled by 35% in the last 25 years and only about 20 Km2 of mangroves exist today. During this study, 4 species of true
mangroves representing 3 genera and 3 families, 10 species of mangrove associates belonging to 8 genera and 6 families and 1 species of non-mangrove halophytes were recorded from the mangrove ecosystems of Uran (Raigad), Navi Mumbai,Maharashtra.At present, coastal environment of Uran shows moderate mangrove density but in coming few years, area around Uran coast will be dominated by intense industrialization and urbanization. In such circumstances, pollution of Uran coast cannot be ignored. Therefore, data presented in this paper can be taken as a base line data for better management of these natural resources.
Key words: Mangroves diversity, Uran, Navi Mumbai,Maharashtra
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
..I.D.E.A.S. Ecosystem Facilitation offers a sustainable solution to maintaining retention ponds. This systems involves strategic plantings of native aquatic flora that will provide a filtration buffer for high nutrient run-off, further decreasing unwanted algal blooms and creating an area of high biodiversity.
FLORAL DIVERSITY OF MANGROVE ECOSYSTEM FROM COASTAL ENVIRONMENT OF URAN (RAIG...Prabhakar Pawar
Mangrove forests are among the world’s most productive ecosystems and are the only forests situated at the confluence of land and sea in tropical and subtropical latitudes.Mangroves are one of the biologically diverse ecosystems in the world, rich in organic matter and nutrients and support very large biomass of flora and fauna. With continuing degradation and destruction ofmangroves, there is a critical need to understand the biodiversity of the mangrove ecosystems.Mangroves represent spirit of Mumbai and NaviMumbai - they are plucky survivors. Each day, millions of citizens in Mumbai pass these hardy plants imaging they are little more than dirty, muddy weeds growing pointlessly along the shoreline. Overexploitation and unsustainable demand has resulted in considerable degradation of mangrove areas and it is feared that the area under mangroves around Mumbai areas has dwindled by 35% in the last 25 years and only about 20 Km2 of mangroves exist today. During this study, 4 species of true
mangroves representing 3 genera and 3 families, 10 species of mangrove associates belonging to 8 genera and 6 families and 1 species of non-mangrove halophytes were recorded from the mangrove ecosystems of Uran (Raigad), Navi Mumbai,Maharashtra.At present, coastal environment of Uran shows moderate mangrove density but in coming few years, area around Uran coast will be dominated by intense industrialization and urbanization. In such circumstances, pollution of Uran coast cannot be ignored. Therefore, data presented in this paper can be taken as a base line data for better management of these natural resources.
Key words: Mangroves diversity, Uran, Navi Mumbai,Maharashtra
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
Domestication of Lais (Ompok hypopthalmus) in the Fishpond as a Sustainable C...Premier Publishers
The research was done in concrete fishponds owned by the community and the other owned the Laboratory of the Faculty of Fishery of the Christian University of Palangka Raya, Central Kalimantan. The Lais were domesticated coming from the Rungan river of Palangka Raya city. The research was done in March throhh July 2016. The study was conducted in two stages, the first stage of research to engineer Lais fish maintenance environment on plakstik pond and the second stage to engineer the feed so that the fish can adapt and grow. The parameters observed were: fish growth, survival, food conversion and water quality (temperature, DO, pH, depth), as well as the development of Lais fish gonads. The sample of test fish is 200 fish, each pond is 50 tails per pond. The virtues of this study were to engineer the Lais fish feed and adaptation time of the fish in new maintenance environments as well as adaptation to artificial foods that promote the hormonal growth of Lais fish. Innovation of environmental engineering cultivation and adaptation of artificial feed for the development of fish gonad. Lais fish farming technology can be applied by freshwater fish farmers.
Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Keralapaperpublications3
Abstract: The fishes are one of the most important, vertebrate, provided rich protein sources for human and several animals and important elements in the economy of many countries. Fish diversity essentially represents the fish faunal diversity. The survey was undertaken during the period from February 2016 to july 2016 in the region of Vettathukadavu, in Kayamkulam backwater, Kerala. The major objective of this study was to find out the biodiversity status of fishes in the Vettathukadavu region of Kayamkulam backwater, Kerala. Conservation status of fishes was assessed by IUCN Conservation status. The Survey of the studied stretch of backwater were resulted in recording of 25 fish species belonging to 6 orders and 15 familes. Of the 25 species reported during the study, 15 are least concern, 1 is critically endangered, 1 is vulnerable, 6 species are not evaluated and 2 species are not reported in IUCN Red.
Keywords: Icthyofauna, Biodiversity, IUCN, Endangered.
Title: Biodiversity Status of Fishes from Vettathukadavu, Kayamkulam Backwater, Kerala
Author: Remya.R, Dr. S.Amina
ISSN 2349-7823
International Journal of Recent Research in Life Sciences (IJRRLS)
Paper Publications
1. ABUNDANCE AND DIET OF CRAYFISH IN TWO DIFFERENT HABITATS AT
GREENWING LABORATORY
Megan Petersohn, Kevin Geedey
Biology, Augustana College, Rock Island, IL 61201
Megan Petersohn
Augustana College
Rock Island, IL
MeganPetersohn11@augustana.edu
Contact
1. Loughman, Zachary J., and Thomas P. Simon. "Zoogeography, Taxonomy, And Conservation Of West Virginia's Ohio River Floodplain Crayfishes (Decapoda, Cambaridae)." Zookeys 74.Spec (2011): 1-78.
2. Page, L. The Crayfishes and Shrimps (Decapoda) of Illinois. Volume: 33 Article: 4
3. Voshell JR. Crayfishes. A Guide to Common Freshwater Invertebrates of North America. 2002. P 254-58.
References
Figure 2:
The average
crayfish
abundance
between habitats
Introduction
The findings provide insights into the behavior of crayfish in Main Pond at
Greenwing and ultimately, of crayfish elsewhere.
• Two different habitats demonstrated different patterns of crayfish abundance
but not diet, possibly because the available food does not differ between
different habitats of the same body of water.
• Crayfish abundance may not solely be dependent on one factor
• Findings are consistent with previous findings23 showing that the abundance
of crayfish determines the density of aquatic plant beds, or if plants are
present at all, implying that the high abundance of crayfish in the North
habitat caused the lack of vegetation.
• There was a general trend of not staying too close to shore, nor too far, and
not being in the shallow traps, nor the deeper traps.
• The crayfish may prefer the North habitat of Main Pond because it is much
more shallow or because of warmer temperatures and more light.
Discussion
Crayfish are very important for environmental biodiversity and can dramatically influence the ecosystem
they are apart of3. They are, however, one of the most imperiled animals in North America, primarily
from invasive species and habitat destruction1 but can withstand many forms of environmental stress like
temperature, pH, and alkalinity23. They will consume whatever available food there is because of their
omnivorous behavior23. They are known to significantly reduce aquatic plant life by cutting plants close
to their roots with the chelipeds but crayfish will also prey on snails, insects, scuds, small fish, fish eggs,
carrion, and other organic matter when vegetation is scarce3. By doing this, crayfish regulate the
environment and nutrients available for other organisms3.
Study Objectives
• Does crayfish abundance within a wetland differ between a shallow, open water habitat and a deeper,
vegetated habitat.?
• Because crayfish have a home range of 30 square meters, does crayfish diet within a wetland differ in
two different types of habitats?
Ultimately, I investigated the effects of two different habitats in the same body of water on the abundance
and diet of crayfish (Procambarus acutus) at the the Augustana Greenwing Environmental Laboratory in
Amboy, Illinois.
Habitat variation
• Proportion of vegetative cover was statistically different (Fig. 1)
• Proportion of cover in West habitat was significantly greater than the North
habitat
Crayfish abundance patterns
• Crayfish abundance varied between habitats, at different distances from the
shore, depths, and temperature
• More crayfish were caught in the North habitat than the West habitat (Fig. 2)
• More crayfish were caught at intermediate distances from shore (10 m) than were
caught either close to shore (5 m) or far from shore (15 m)
• Same pattern with depth and water temperature (Fig. 3)
• The least amount of crayfish were caught in the shallowest/warmest
and deepest/coldest ends of each habitat
Crayfish diet
• No statistical significance between habitats
Other variables
• No statistical significance of light penetration, SPC, TDS, or dissolved oxygen
levels and crayfish distribution in this pond
In general, the most crayfish were caught in the 10m-from-shore minnow trap in the
North habitat
Figure 1:
Average estimated
proportion of cover
between habitats
•Determine habitats
• Two habitats located in Main Pond at Augustana Greenwing
Environmental Laboratory and were 115 m apart
• North habitat – less vegetation, shallower, higher water temperatures
• West habitat – more vegetation, deeper, lower water temperatures
•Collection of crayfish
• Three minnow traps with canned cat food at each habitat
• Different distances from shore (5m, 10m, and 15m in each habitat)
• Traps were checked 11 separate times and each time, crayfish were
collected for analysis
•Record and analyze data
• Variables: Abundance, distance from shore, depth, diet, proportion of
vegetative cover, light penetrance, water temperature, specific
conductivity (SPC), total dissolved solids (TDS), and dissolved oxygen
•Diet analysis
• Dissection of gut – proportion of vegetation in gut and identifiable
material
North and West Habitats
Main Pond in Greenwing Environmental Laboratory (Amboy, IL)
West HabitatNorth Habitat
0
0.2
0.4
0.6
0.8
1
1.2
EstimatedProportionof
Cover
0
0.02
0.04
0.06
0.08
0.1
0.12
Abundance(catchpertrap
hour)
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
20 30 40 50 60 70 80 90 100
Abundance(catchper
traphour)
Depth (cm)
ANOVA, F=353.33, P<6.9x10-39
North Habitat West Habitat
Results
Methods
ANOVA, F=7.15, P<.009
North Habitat West Habitat
Figure 3:
Crayfish
abundance at
specified trap
depths (above)
and different
temperatures
(below)
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
18 19 20 21 22 23 24 25 26
Abundance(catchper
traphour)
Temperature (degrees Celcius)
ANOVA, F=6759.33, P<5.9x10-114