1) Native fish conservation in southeastern Arizona faces many challenges, including conflicts over water usage, habitat loss, invasive species, and climate variability and change. Drought and climate change are likely to exacerbate these issues by reducing water levels, altering fire regimes, and impacting watersheds.
2) There are 21 native fish species in the region, but 5 are now extinct or extirpated. Thirteen species are listed under the Endangered Species Act as endangered or threatened.
3) To help conserve native fish, natural resource managers should plan for climate change through adaptive management, replicate important fish populations across the landscape and in refuges, and have protocols to respond to impacts from drought, fires,
This document summarizes research on spatial and temporal patterns of the algae Pseudo-nitzschia in central California and how they relate to regional oceanography. Major blooms occurred in 1991, 1995, 1998, 2000, and 2002. Blooms often initiated in southern California and appeared to propagate northward. Laboratory experiments showed blooms were generally nitrogen limited rather than limited by silicon or iron. Large-scale blooms are inconsistent with local oceanographic drivers and may be influenced more by latitudinal changes in regional conditions. Monitoring programs have difficulty predicting blooms due to thin subsurface layers of algae that are difficult to detect.
The Hydrology of high Arctic Lakes and Climatechris benston
The document discusses how climate change is affecting the phenology of Arctic and Antarctic seabirds. It finds that seabird phenology is influenced by numerous variables, including species, location, sea ice extent, food supply, and temperature. Data presented shows that Emperor Penguin populations decline with decreased sea ice and warmer springs, while Snow Petrel populations increase with more sea ice. In the Arctic, Common Murre and Thick-billed Murre colonies do best with moderate sea surface temperature increases but are negatively impacted by extreme temperature changes. The conclusion is that while climate change is having adverse effects, more long-term research is needed to determine its full impacts due to high variability between species and locations.
Warm air and water temperatures and offshore winds have persisted since fall. Numerous and sizable jelly fish patches are still present in southern inlets of Puget Sound. Coastal waters were colored in shades of gray to brown by sediment and humic substances. Phytoplankton blooms were restricted to the surf zone. We were treated to artful views of meandering sloughs and gullies on exposed mud flats during low tide in Willapa Bay, interspersed with the geometry of shellfish management. Brown pelicans: a story of recovery.
This document examines factors affecting fish entrainment at the massive water diversions of the State Water Project and Central Valley Project in the San Francisco Bay Delta estuary. It analyzes 13 years of data on fish salvage counts, pumping operations, and environmental characteristics to determine what factors influence entrainment of different fish species. Entrainment of migratory pelagic species like delta smelt, longfin smelt, and striped bass was found to correlate with their seasonal occurrence near the export facilities. Flow patterns through the estuary also predicted pelagic fish entrainment. Entrainment of resident demersal species and littoral species was not clearly linked to diversion flows. The study suggests manipulating hydrodynamics
Joseph Shannon (of Michigan Technological University), presented at the Adapting Forested Watersheds to Climate Change Workshop, at The Waters, Minocqua, WI on March 15-16, 2017. The workshop was hosted by the Northern Institute of Applied Climate Science (NIACS), USDA Climate Hubs, and the Wisconsin Initiative on Climate Change Impacts (WICCI).
Presented by Dr. Shailesh Nayak Key-note Address at Achieving Sustainable Development Goals and Strengthening Science of Climate Resilience, Multi-Stakeholders
This document summarizes a study on the biogeochemistry of dissolved nitrogen, phosphorus, and organic carbon along terrestrial-aquatic flowpaths in a montane headwater catchment in the Peruvian Amazon. The study investigated spatial and temporal variations in nutrient concentrations from upland soils to streams under baseflow and stormflow conditions. Key findings include: 1) During baseflow, strong terrestrial controls maintained relatively constant nitrate levels in streams compared to more variable upland soils; 2) Dissolved organic nitrogen dominated stream nitrogen despite decreasing concentrations from uplands; 3) Phosphorus concentrations showed the inverse pattern, with higher levels in streams than uplands. 4) Stoichiometric ratios contrasted between uplands and streams
A summary of key findings from the IPCC 5th Assessment Report by Anne Hollowed, Alaska Fisheries Science Center, USA
SICCME open session, 17 September 2014, ICES Annual Science Conference, A Coruña, Spain
This document summarizes research on spatial and temporal patterns of the algae Pseudo-nitzschia in central California and how they relate to regional oceanography. Major blooms occurred in 1991, 1995, 1998, 2000, and 2002. Blooms often initiated in southern California and appeared to propagate northward. Laboratory experiments showed blooms were generally nitrogen limited rather than limited by silicon or iron. Large-scale blooms are inconsistent with local oceanographic drivers and may be influenced more by latitudinal changes in regional conditions. Monitoring programs have difficulty predicting blooms due to thin subsurface layers of algae that are difficult to detect.
The Hydrology of high Arctic Lakes and Climatechris benston
The document discusses how climate change is affecting the phenology of Arctic and Antarctic seabirds. It finds that seabird phenology is influenced by numerous variables, including species, location, sea ice extent, food supply, and temperature. Data presented shows that Emperor Penguin populations decline with decreased sea ice and warmer springs, while Snow Petrel populations increase with more sea ice. In the Arctic, Common Murre and Thick-billed Murre colonies do best with moderate sea surface temperature increases but are negatively impacted by extreme temperature changes. The conclusion is that while climate change is having adverse effects, more long-term research is needed to determine its full impacts due to high variability between species and locations.
Warm air and water temperatures and offshore winds have persisted since fall. Numerous and sizable jelly fish patches are still present in southern inlets of Puget Sound. Coastal waters were colored in shades of gray to brown by sediment and humic substances. Phytoplankton blooms were restricted to the surf zone. We were treated to artful views of meandering sloughs and gullies on exposed mud flats during low tide in Willapa Bay, interspersed with the geometry of shellfish management. Brown pelicans: a story of recovery.
This document examines factors affecting fish entrainment at the massive water diversions of the State Water Project and Central Valley Project in the San Francisco Bay Delta estuary. It analyzes 13 years of data on fish salvage counts, pumping operations, and environmental characteristics to determine what factors influence entrainment of different fish species. Entrainment of migratory pelagic species like delta smelt, longfin smelt, and striped bass was found to correlate with their seasonal occurrence near the export facilities. Flow patterns through the estuary also predicted pelagic fish entrainment. Entrainment of resident demersal species and littoral species was not clearly linked to diversion flows. The study suggests manipulating hydrodynamics
Joseph Shannon (of Michigan Technological University), presented at the Adapting Forested Watersheds to Climate Change Workshop, at The Waters, Minocqua, WI on March 15-16, 2017. The workshop was hosted by the Northern Institute of Applied Climate Science (NIACS), USDA Climate Hubs, and the Wisconsin Initiative on Climate Change Impacts (WICCI).
Presented by Dr. Shailesh Nayak Key-note Address at Achieving Sustainable Development Goals and Strengthening Science of Climate Resilience, Multi-Stakeholders
This document summarizes a study on the biogeochemistry of dissolved nitrogen, phosphorus, and organic carbon along terrestrial-aquatic flowpaths in a montane headwater catchment in the Peruvian Amazon. The study investigated spatial and temporal variations in nutrient concentrations from upland soils to streams under baseflow and stormflow conditions. Key findings include: 1) During baseflow, strong terrestrial controls maintained relatively constant nitrate levels in streams compared to more variable upland soils; 2) Dissolved organic nitrogen dominated stream nitrogen despite decreasing concentrations from uplands; 3) Phosphorus concentrations showed the inverse pattern, with higher levels in streams than uplands. 4) Stoichiometric ratios contrasted between uplands and streams
A summary of key findings from the IPCC 5th Assessment Report by Anne Hollowed, Alaska Fisheries Science Center, USA
SICCME open session, 17 September 2014, ICES Annual Science Conference, A Coruña, Spain
Climate changes impact on coastal regionsMakeOil Green
Coasts will face increasing risks from climate change through this century. Impacts include more frequent flooding, erosion, ecosystem loss, and damage from storms. These risks disproportionately threaten dense, low-lying coastal populations. While adaptation is challenging, a combination of protection, accommodation, and retreat strategies can reduce risks. However, sea level rise will continue for centuries, potentially questioning the viability of some coastal settlements without mitigation to limit long-term rise.
Ocean temperatures are rising, causing increased coral bleaching events, disease, and mortality. If greenhouse gas emissions are not reduced, ocean temperatures are projected to increase by 1.8-4°C by 2100, exceeding the tolerance of many coral species. Increasing temperatures, ocean acidification, sea level rise, and extreme weather events from climate change threaten widespread damage and decline of coral reef ecosystems. Immediate reductions in greenhouse gas emissions, especially CO2, are needed to avoid pushing coral reefs past critical environmental tipping points that could lead to ecosystem collapse.
Response aquatic systems and livelihoods to climate change presentation finalCANAAFRICA
This document summarizes how climate variability and change impact inland aquatic ecosystems, fisheries productivity, and livelihoods in Africa. It finds that temperatures have increased in African lakes since 1980s, affecting mixing dynamics and stratification. This caused shifts in aquatic organisms and fisheries toward faster growing species. Communities have adapted fishing methods and diversified livelihoods. However, more policy interventions are needed to support adaptation, mitigate impacts, and incorporate climate change into management.
1) The study examined the interactive effects of livestock grazing and climate change on water temperatures in three high-elevation meadow streams in the Golden Trout Wilderness that are habitat for California golden trout.
2) By comparing areas with and without cattle grazing, the study found that the removal of riparian vegetation by livestock resulted in less stream shading and higher maximum water temperatures.
3) Comparisons among the three meadow streams, which had different grazing management histories, also showed that water temperatures were cooler in the areas where cattle had been excluded long-term.
Modelling climate change impacts on nutrients and primary production in coast...Marco Pesce
The document describes an integrated modelling approach used to project the impacts of climate change on nutrient loadings and phytoplankton communities in coastal waters. The approach combines climate models, a hydrological model, and an ecological model. Climate models project increases in winter precipitation and summer temperatures. The hydrological model shows increases in winter nutrient loads and decreases in summer. The ecological model then projects changes in nutrient concentrations, phytoplankton biomass, and species composition in the coastal waters.
This document analyzes the potential ecological impacts of a leak from a natural gas liquids (NGL) pipeline running beneath Lake Herrington on the white bass population. A leak could introduce NGLs like ethane, propane and butane into the lake surface where white bass mate and feed in spring. Studies show hydrocarbons like these can cause fish death, disrupt behaviors, and harm biological functions. A spring leak in particular could drastically reduce white bass numbers through impacts on mating and food availability. This could disrupt the food chain by reducing a top predator and allowing overpopulation of smaller fish normally eaten by white bass. While impacts are difficult to predict precisely, a leak appears likely to negatively affect the local economy by reducing pri
Climate change will have significant negative impacts on Bangladesh through increased flooding, droughts, and salinity intrusion. Flooding will increase in extent and frequency due to rising sea levels and heavier monsoon rains, damaging crops, aquaculture, and settlements. Droughts will also become more severe and affect a larger area due to increased evapotranspiration and reduced winter rainfall. Low flows during the dry season will allow salinity to penetrate further inland, affecting crops and the Sundarbans mangrove forest. Other impacts include threats to human health from the increased spread of diseases like malaria and dengue.
impactos del cambio climatico en ecosistemas costerosXin San
Anthropogenically induced global climate change has profound implications for marine
ecosystems and the economic and social systems that depend upon them. The
relationship between temperature and individual performance is reasonably well
understood, and much climate-related research has focused on potential shifts in
distribution and abundance driven directly by temperature. However, recent work has
revealed that both abiotic changes and biological responses in the ocean will be
substantially more complex. For example, changes in ocean chemistry may be more
important than changes in temperature for the performance and survival of many
organisms. Ocean circulation, which drives larval transport, will also change, with
important consequences for population dynamics. Furthermore, climatic impacts on one
or a few leverage species may result in sweeping community-level changes. Finally,
synergistic effects between climate and other anthropogenic variables, particularly fishing
pressure, will likely exacerbate climate-induced changes. Efforts to manage and conserve
living marine systems in the face of climate change will require improvements to the
existing predictive framework. Key directions for future research include identifying key
demographic transitions that influence population dynamics, predicting changes in the
community-level impacts of ecologically dominant species, incorporating populations
ability to evolve (adapt), and understanding the scales over which climate will change and
living systems will respond.
EOPS_May_2_2016,
Spring air temperatures are higher - it has been sunny and dry. The snowpack is quickly disappearing as temperatures are up to 7 °F warmer at higher elevations. Snowmelt-fed rivers are running very high. How does this affect water quality in Puget Sound? A strong spring phytoplankton bloom extends across Puget Sound and the Strait of Juan de Fuca. Water temperatures are still higher than normal and jellyfish are already numerous in southern inlets. The high biological activity is causing organic material to drift at the surface and wash onto beaches. Do you know how fast a Sand Star can move?
Ecology Publication No. 16-03-073
Freshwater protected areas and defining a conservation blueprint for desert f...University of Washington
This document summarizes a study that aimed to identify priority areas for conserving freshwater fish diversity in the Lower Colorado River Basin. The study developed species distribution models for 40 native and non-native fish species. Using these models and metrics of taxonomic, functional, and phylogenetic diversity, a conservation prioritization algorithm identified the top conservation priorities. The study found opportunities for conservation but also trade-offs between different diversity targets and challenges from contemporary and future threats.
Addressing Concerns on Climate Change Science - NOAA ResearchObama White House
The document summarizes a report from the Intergovernmental Panel on Climate Change (IPCC) that addresses several key points regarding climate change science:
1) The world has warmed by approximately 0.6°C over the past century according to multiple data sets and models. Temperatures are likely to increase further this century.
2) Future warming may increase transmission of diseases like malaria and dengue fever, though local factors greatly influence disease patterns.
3) Global sea level rise between 1990-2100 is projected at 0.09-0.88 meters due to thermal expansion and melting ice, though estimates vary.
4) Extreme weather events like heat waves, droughts and heavy rain
Effect of Climate Change - By Anjali Patel (IGKV Raipur, C.G)Rahul Raj Tandon
This document is a presentation submitted by Anjali Patel to Dr. Pratibha Katiyar on the impacts of climate change on water resources and the hydrological cycle. It discusses how climate change affects precipitation patterns, flooding, drought, groundwater recharge and availability. Increased temperatures lead to changes in evaporation and rainfall variability, altering streamflows and water availability. The impacts on the Indian monsoon system are also examined. Adaptation strategies like infrastructure development, groundwater management and afforestation are proposed to mitigate the effects of climate change on water resources.
Wesley Daniel (of Michigan State University), presented at the Adapting Forested Watersheds to Climate Change Workshop, at The Waters, Minocqua, WI on March 15-16, 2017. The workshop was hosted by the Northern Institute of Applied Climate Science (NIACS), USDA Climate Hubs, and the Wisconsin Initiative on Climate Change Impacts (WICCI). Details at www.forestadaptation.org/water.
Riverine thermal regimes are an important but overlooked component of environmental flows. Dams and other human activities can strongly modify the natural thermal regime of rivers by altering water temperatures, often decreasing temperatures downstream. Five key challenges to incorporating thermal regimes into environmental flow assessments are: 1) improving understanding of natural thermal variability, 2) quantifying the degree dams alter thermal regimes, 3) relating thermal changes to ecological impacts, 4) developing thermal criteria, and 5) implementing management strategies to restore thermal conditions.
Climate change is unequivocally warming the planet and will profoundly impact freshwater resources in the United States. As the world gets warmer, precipitation patterns will become more variable with heavier rainfall and increased drought risk. This will reduce available water supplies and increase water demand. Current water policies are not equipped to handle these new challenges. To adapt, policies must emphasize more efficient water allocation and conservation. The warming is evidenced by rising global temperatures, melting ice and snow, and sea level rise. Most of North America is expected to warm more than the global average, especially the Southwest. This will significantly reduce water supplies through decreased snowpack in western mountains and increased evaporation. New approaches to water management will be needed to cope with
An overview of climate change effects potentially impacting the Southeastern United States. Provides references, image credits, and supporting citations in "slide notes" view. For more climate change information, visit the National Biological Information Infrastructure (NBII), Southeast Information Node Climate Change Web site at http://go.usa.gov/OIs
This document discusses using conservation easements to protect the forested watersheds of lakes important for cisco populations in Minnesota. It notes that Minnesota's climate is warming and this is negatively impacting cisco. 176 cisco refuge lakes were identified as priorities for protection. The document proposes investing $180 million to establish conservation easements on 300,000 acres of forest land within the watersheds of these refuge lakes to help maintain good water quality conditions for cisco. Private forest conservation easements are presented as an established tool that could help with this protection goal.
Andrew Rypel (of Wisconsin Department of Natural Resources), presented at the Adapting Forested Watersheds to Climate Change Workshop, at The Waters, Minocqua, WI on March 15-16, 2017. The workshop was hosted by the Northern Institute of Applied Climate Science (NIACS), USDA Climate Hubs, and the Wisconsin Initiative on Climate Change Impacts (WICCI).
1. Climate change will have significant negative impacts on agriculture, fisheries, and food security globally and in developing countries like India. It will reduce crop yields and threaten livelihoods.
2. Climate change is also expected to damage freshwater ecosystems through changes in water levels, temperature, and flow of rivers that many depend on for irrigation, fisheries, drinking water, and hydropower. Coastal areas will face risks from sea level rise.
3. Adaptation efforts are needed to strengthen early warning systems, disaster risk management, and promote sustainable farming practices that help populations adapt to a changing climate. Investments in rural development and safety nets can help reduce long term impacts on food security.
The document summarizes a study on the effects of drought on rainbow trout populations in two Southern California streams. Methods included monitoring water quality with loggers and electrofishing surveys. Results showed Sweetwater River conditions remained viable for trout with temperatures below 28C and DO above 2.6 mg/L. Boulder Creek saw DO drops to zero in May, making conditions unviable. The study concluded worsening drought is reducing trout numbers through higher temperatures and lower water quality, posing challenges for long-term proliferation of these populations.
This documentary summarizes the natural beauty found in the deserts of the American Southwest, including national parks and monuments such as Arches, Canyonlands, Mesa Verde, Black Canyon, Cedar Breaks, Monument Valley, Bryce Canyon, Death Valley, Valley of Fire, Canyon de Chelly, and the Grand Canyon. It highlights the colorful rock formations sculpted by erosion over millions of years, native plant and animal life, and evidence that humans have inhabited the area for thousands of years.
This documentary summarizes the natural beauty found in the deserts of the American Southwest, including national parks and monuments such as Arches, Canyonlands, Mesa Verde, Black Canyon, Cedar Breaks, Monument Valley, Bryce Canyon, Death Valley, Valley of Fire, Canyon de Chelly, and the Grand Canyon. It highlights the colorful rock formations sculpted by erosion over millions of years, native plant and animal life, and evidence that Native Americans inhabited the area for thousands of years.
Climate changes impact on coastal regionsMakeOil Green
Coasts will face increasing risks from climate change through this century. Impacts include more frequent flooding, erosion, ecosystem loss, and damage from storms. These risks disproportionately threaten dense, low-lying coastal populations. While adaptation is challenging, a combination of protection, accommodation, and retreat strategies can reduce risks. However, sea level rise will continue for centuries, potentially questioning the viability of some coastal settlements without mitigation to limit long-term rise.
Ocean temperatures are rising, causing increased coral bleaching events, disease, and mortality. If greenhouse gas emissions are not reduced, ocean temperatures are projected to increase by 1.8-4°C by 2100, exceeding the tolerance of many coral species. Increasing temperatures, ocean acidification, sea level rise, and extreme weather events from climate change threaten widespread damage and decline of coral reef ecosystems. Immediate reductions in greenhouse gas emissions, especially CO2, are needed to avoid pushing coral reefs past critical environmental tipping points that could lead to ecosystem collapse.
Response aquatic systems and livelihoods to climate change presentation finalCANAAFRICA
This document summarizes how climate variability and change impact inland aquatic ecosystems, fisheries productivity, and livelihoods in Africa. It finds that temperatures have increased in African lakes since 1980s, affecting mixing dynamics and stratification. This caused shifts in aquatic organisms and fisheries toward faster growing species. Communities have adapted fishing methods and diversified livelihoods. However, more policy interventions are needed to support adaptation, mitigate impacts, and incorporate climate change into management.
1) The study examined the interactive effects of livestock grazing and climate change on water temperatures in three high-elevation meadow streams in the Golden Trout Wilderness that are habitat for California golden trout.
2) By comparing areas with and without cattle grazing, the study found that the removal of riparian vegetation by livestock resulted in less stream shading and higher maximum water temperatures.
3) Comparisons among the three meadow streams, which had different grazing management histories, also showed that water temperatures were cooler in the areas where cattle had been excluded long-term.
Modelling climate change impacts on nutrients and primary production in coast...Marco Pesce
The document describes an integrated modelling approach used to project the impacts of climate change on nutrient loadings and phytoplankton communities in coastal waters. The approach combines climate models, a hydrological model, and an ecological model. Climate models project increases in winter precipitation and summer temperatures. The hydrological model shows increases in winter nutrient loads and decreases in summer. The ecological model then projects changes in nutrient concentrations, phytoplankton biomass, and species composition in the coastal waters.
This document analyzes the potential ecological impacts of a leak from a natural gas liquids (NGL) pipeline running beneath Lake Herrington on the white bass population. A leak could introduce NGLs like ethane, propane and butane into the lake surface where white bass mate and feed in spring. Studies show hydrocarbons like these can cause fish death, disrupt behaviors, and harm biological functions. A spring leak in particular could drastically reduce white bass numbers through impacts on mating and food availability. This could disrupt the food chain by reducing a top predator and allowing overpopulation of smaller fish normally eaten by white bass. While impacts are difficult to predict precisely, a leak appears likely to negatively affect the local economy by reducing pri
Climate change will have significant negative impacts on Bangladesh through increased flooding, droughts, and salinity intrusion. Flooding will increase in extent and frequency due to rising sea levels and heavier monsoon rains, damaging crops, aquaculture, and settlements. Droughts will also become more severe and affect a larger area due to increased evapotranspiration and reduced winter rainfall. Low flows during the dry season will allow salinity to penetrate further inland, affecting crops and the Sundarbans mangrove forest. Other impacts include threats to human health from the increased spread of diseases like malaria and dengue.
impactos del cambio climatico en ecosistemas costerosXin San
Anthropogenically induced global climate change has profound implications for marine
ecosystems and the economic and social systems that depend upon them. The
relationship between temperature and individual performance is reasonably well
understood, and much climate-related research has focused on potential shifts in
distribution and abundance driven directly by temperature. However, recent work has
revealed that both abiotic changes and biological responses in the ocean will be
substantially more complex. For example, changes in ocean chemistry may be more
important than changes in temperature for the performance and survival of many
organisms. Ocean circulation, which drives larval transport, will also change, with
important consequences for population dynamics. Furthermore, climatic impacts on one
or a few leverage species may result in sweeping community-level changes. Finally,
synergistic effects between climate and other anthropogenic variables, particularly fishing
pressure, will likely exacerbate climate-induced changes. Efforts to manage and conserve
living marine systems in the face of climate change will require improvements to the
existing predictive framework. Key directions for future research include identifying key
demographic transitions that influence population dynamics, predicting changes in the
community-level impacts of ecologically dominant species, incorporating populations
ability to evolve (adapt), and understanding the scales over which climate will change and
living systems will respond.
EOPS_May_2_2016,
Spring air temperatures are higher - it has been sunny and dry. The snowpack is quickly disappearing as temperatures are up to 7 °F warmer at higher elevations. Snowmelt-fed rivers are running very high. How does this affect water quality in Puget Sound? A strong spring phytoplankton bloom extends across Puget Sound and the Strait of Juan de Fuca. Water temperatures are still higher than normal and jellyfish are already numerous in southern inlets. The high biological activity is causing organic material to drift at the surface and wash onto beaches. Do you know how fast a Sand Star can move?
Ecology Publication No. 16-03-073
Freshwater protected areas and defining a conservation blueprint for desert f...University of Washington
This document summarizes a study that aimed to identify priority areas for conserving freshwater fish diversity in the Lower Colorado River Basin. The study developed species distribution models for 40 native and non-native fish species. Using these models and metrics of taxonomic, functional, and phylogenetic diversity, a conservation prioritization algorithm identified the top conservation priorities. The study found opportunities for conservation but also trade-offs between different diversity targets and challenges from contemporary and future threats.
Addressing Concerns on Climate Change Science - NOAA ResearchObama White House
The document summarizes a report from the Intergovernmental Panel on Climate Change (IPCC) that addresses several key points regarding climate change science:
1) The world has warmed by approximately 0.6°C over the past century according to multiple data sets and models. Temperatures are likely to increase further this century.
2) Future warming may increase transmission of diseases like malaria and dengue fever, though local factors greatly influence disease patterns.
3) Global sea level rise between 1990-2100 is projected at 0.09-0.88 meters due to thermal expansion and melting ice, though estimates vary.
4) Extreme weather events like heat waves, droughts and heavy rain
Effect of Climate Change - By Anjali Patel (IGKV Raipur, C.G)Rahul Raj Tandon
This document is a presentation submitted by Anjali Patel to Dr. Pratibha Katiyar on the impacts of climate change on water resources and the hydrological cycle. It discusses how climate change affects precipitation patterns, flooding, drought, groundwater recharge and availability. Increased temperatures lead to changes in evaporation and rainfall variability, altering streamflows and water availability. The impacts on the Indian monsoon system are also examined. Adaptation strategies like infrastructure development, groundwater management and afforestation are proposed to mitigate the effects of climate change on water resources.
Wesley Daniel (of Michigan State University), presented at the Adapting Forested Watersheds to Climate Change Workshop, at The Waters, Minocqua, WI on March 15-16, 2017. The workshop was hosted by the Northern Institute of Applied Climate Science (NIACS), USDA Climate Hubs, and the Wisconsin Initiative on Climate Change Impacts (WICCI). Details at www.forestadaptation.org/water.
Riverine thermal regimes are an important but overlooked component of environmental flows. Dams and other human activities can strongly modify the natural thermal regime of rivers by altering water temperatures, often decreasing temperatures downstream. Five key challenges to incorporating thermal regimes into environmental flow assessments are: 1) improving understanding of natural thermal variability, 2) quantifying the degree dams alter thermal regimes, 3) relating thermal changes to ecological impacts, 4) developing thermal criteria, and 5) implementing management strategies to restore thermal conditions.
Climate change is unequivocally warming the planet and will profoundly impact freshwater resources in the United States. As the world gets warmer, precipitation patterns will become more variable with heavier rainfall and increased drought risk. This will reduce available water supplies and increase water demand. Current water policies are not equipped to handle these new challenges. To adapt, policies must emphasize more efficient water allocation and conservation. The warming is evidenced by rising global temperatures, melting ice and snow, and sea level rise. Most of North America is expected to warm more than the global average, especially the Southwest. This will significantly reduce water supplies through decreased snowpack in western mountains and increased evaporation. New approaches to water management will be needed to cope with
An overview of climate change effects potentially impacting the Southeastern United States. Provides references, image credits, and supporting citations in "slide notes" view. For more climate change information, visit the National Biological Information Infrastructure (NBII), Southeast Information Node Climate Change Web site at http://go.usa.gov/OIs
This document discusses using conservation easements to protect the forested watersheds of lakes important for cisco populations in Minnesota. It notes that Minnesota's climate is warming and this is negatively impacting cisco. 176 cisco refuge lakes were identified as priorities for protection. The document proposes investing $180 million to establish conservation easements on 300,000 acres of forest land within the watersheds of these refuge lakes to help maintain good water quality conditions for cisco. Private forest conservation easements are presented as an established tool that could help with this protection goal.
Andrew Rypel (of Wisconsin Department of Natural Resources), presented at the Adapting Forested Watersheds to Climate Change Workshop, at The Waters, Minocqua, WI on March 15-16, 2017. The workshop was hosted by the Northern Institute of Applied Climate Science (NIACS), USDA Climate Hubs, and the Wisconsin Initiative on Climate Change Impacts (WICCI).
1. Climate change will have significant negative impacts on agriculture, fisheries, and food security globally and in developing countries like India. It will reduce crop yields and threaten livelihoods.
2. Climate change is also expected to damage freshwater ecosystems through changes in water levels, temperature, and flow of rivers that many depend on for irrigation, fisheries, drinking water, and hydropower. Coastal areas will face risks from sea level rise.
3. Adaptation efforts are needed to strengthen early warning systems, disaster risk management, and promote sustainable farming practices that help populations adapt to a changing climate. Investments in rural development and safety nets can help reduce long term impacts on food security.
The document summarizes a study on the effects of drought on rainbow trout populations in two Southern California streams. Methods included monitoring water quality with loggers and electrofishing surveys. Results showed Sweetwater River conditions remained viable for trout with temperatures below 28C and DO above 2.6 mg/L. Boulder Creek saw DO drops to zero in May, making conditions unviable. The study concluded worsening drought is reducing trout numbers through higher temperatures and lower water quality, posing challenges for long-term proliferation of these populations.
This documentary summarizes the natural beauty found in the deserts of the American Southwest, including national parks and monuments such as Arches, Canyonlands, Mesa Verde, Black Canyon, Cedar Breaks, Monument Valley, Bryce Canyon, Death Valley, Valley of Fire, Canyon de Chelly, and the Grand Canyon. It highlights the colorful rock formations sculpted by erosion over millions of years, native plant and animal life, and evidence that humans have inhabited the area for thousands of years.
This documentary summarizes the natural beauty found in the deserts of the American Southwest, including national parks and monuments such as Arches, Canyonlands, Mesa Verde, Black Canyon, Cedar Breaks, Monument Valley, Bryce Canyon, Death Valley, Valley of Fire, Canyon de Chelly, and the Grand Canyon. It highlights the colorful rock formations sculpted by erosion over millions of years, native plant and animal life, and evidence that Native Americans inhabited the area for thousands of years.
- Giant Miscanthus (Miscanthus x giganteus) is an attractive feedstock for bioenergy and bioproducts due to its high biomass production levels shown in U.S. studies. As a perennial crop, it requires fewer annual inputs than annual row crops after establishment and produces biomass for 10-15 years.
- M. x giganteus grows efficiently in a variety of settings, tolerates drought and temperatures as low as -20°F. Established plants can photosynthesize at temperatures as low as 47°F and produce more biomass than maize in Illinois.
- Yields of established M. x giganteus stands range from 1.8 to 15
The document discusses several ecological restoration challenges and case studies in arid regions of the southwestern US. It describes restoration goals like habitat creation and invasive species removal. Case studies include the Rillito River restoration project in Tucson, which transformed a concrete channel to valuable wildlife habitat, and restoration projects at Saguaro National Park and Organ Pipe Cactus National Monument involving plant salvaging and offsite mitigation. Close coordination with local experts and consideration of unique landscape features are emphasized.
The document discusses invasive plant species in Pennsylvania, how they spread and harm the environment, and alternatives for landscaping. It defines invasive species and explains that they spread quickly, reproduce abundantly, and harm the economy, environment and human health. Examples of invasive plants used in landscaping are provided like burning bush, Japanese barberry and butterfly bush, along with native alternatives. Ways to prevent the spread of invasives like using native plants and reducing soil disturbances are also discussed.
This document provides guidance on creating a rain garden to capture and filter stormwater runoff. It discusses choosing an appropriate location downhill from structures and away from utilities. The soil should be evaluated for drainage and improved if needed by loosening compacted soil or replacing with a rain garden soil mix. The garden bed is then prepared by defining borders, removing turf, double digging or replacing the soil. The pond area in the center is graded to be 6 inches deep to pond water and allow it to infiltrate the soil. Finally, the garden is planted with suitable native plants adapted to the site's moisture conditions. Any size rain garden can help improve water quality even if it cannot capture all of a site's runoff.
This is the slideshow I developed for the Arizona Native Plant Society\'s Grow Native, Don\'t Plant a Pest Campaign. Check out www.aznps.com for a narrated version.
IRREVERSIBLE? Climate Change, Fisherfolks, and the Coastal Communitymeih
The document discusses the impacts of climate change on coastal communities and fisheries in the Philippines. It notes that the Philippines has extensive coastlines and coastal populations that are highly dependent on marine fisheries for food and livelihood. Climate change is expected to negatively impact coral reefs, fisheries, and coastal resources through rising sea levels, increased temperatures, and more extreme weather. This will threaten food security and biodiversity in the Philippines. The document also discusses observed shifts in species ranges and abundances due to ocean warming globally.
The document discusses the relationship between climate change and the ocean. It notes that the ocean absorbs over 30% of carbon dioxide emissions, which is causing the ocean to warm and become more acidic. This is negatively impacting ocean ecosystems and species. Species are migrating to new areas as the climate changes, which could create international issues. Addressing climate change will require significant reductions in greenhouse gas emissions globally through policies like the Paris Agreement. Protecting coastal ecosystems like mangroves and seagrasses can also help mitigate climate change by storing carbon.
This document discusses how climate change is affecting oceans and fisheries in the Northeast United States. It notes that the region is experiencing some of the highest rates of temperature rise and sea level rise on the planet. This is causing fish species distributions and abundances to shift, lowering the productivity of some fisheries. Specifically, American lobster has been depleted in Southern New England waters that are getting too warm, and Atlantic cod rebuilding may not be possible if warming oceans persist long term. The document outlines how resource managers are working to incorporate climate science into fisheries management and protect vulnerable species and habitats to increase ecosystem resilience to climate impacts.
An ecosystem is an interrelationship between living beings and their environment, influenced by climate, vegetation, and human activities. Coral reef ecosystems are an example, with coral dependent on small fish and water temperature. However, global warming is causing ocean temperatures to rise and coral to bleach and die off, destroying the reefs. This leads to increased erosion as the shoreline washes away without the reefs.
Integrated Water Resource Planning - Water, Forests, People and PolicyGeoEngineers, Inc.
This slideshow presents a series of graphics, photographs and statements reflective of integrated water resource management with specific reference to forest management in a changing climate. We are already experiencing the migration of animals and humans with climate shifts. The severity and frequency of wildfires, droughts, floods and ocean acidification are also increasing. Impacts to our economy, infrastructure and atmosphere have lead us to difficult choices regarding land use and future policy development to better manage our natural resources.
Wayne Wright, CFP, PWS
Sr. Principal, Fisheries & Wetland Scientist, Market Intelligence Leader at GeoEngineers
This document discusses how climate change is negatively impacting freshwater fish populations in the United States. It notes that rivers, streams and lakes are warming, snowpack is melting earlier, and more severe wildfires and rainfall events are degrading fish habitat. These changes are projected to significantly reduce suitable habitat for cold-water fish species. The document also discusses how climate change exacerbates existing threats to fish like invasive species, and how increasing water withdrawals will strain water resources in areas like the southwestern US. Overall population declines and losses of billions in annual fishing economic activity are projected if carbon pollution driving climate change is not curbed.
The document discusses marine defaunation, or the loss of animal life in the oceans caused by human activity. Some key points:
- Marine defaunation began much later than terrestrial defaunation, only intensifying in the last century with industrial fishing and coastal development. However, human impacts on marine wildlife are increasing rapidly.
- Few marine animal species have gone completely extinct compared to land animals, but populations of many species have declined greatly. Local extinctions where species disappear from parts of their range have been common.
- While extinction rates remain lower than on land currently, marine extinction rates may be approaching a transition point similar to what occurred during the industrial revolution on land, with rates set
Scientific talk on effects of climate variation and young fish
- general ideas about climate effects on marine ecosystems
- variations in temperature-zooplankton-North Sea cod
- spatial population structure and detecting climate effects
Unusually warm water temperatures continue in central and south Puget Sound. River flows remain lower than normal, especially the Fraser and Skagit rivers. Thus, with estuarine circulation much weaker, Puget Sound waters stay put. Mats of organic debris persist in Central Sound near Port Madison. Red-brown and brown blooms are now very strong in southern inlets and jellyfish patches are exceptionally numerous and large. Explore media coverage of unusual Puget Sound conditions including jellyfish.
Climate change refers to the rise in average surface temperatures on Earth due primarily to human use of fossil fuels. Burning fossil fuels releases greenhouse gases like carbon dioxide into the air, trapping heat and changing the climate. The impacts of climate change include higher temperatures, more extreme weather, melting glaciers and sea ice, rising sea levels, and shifts in precipitation patterns. Developing countries are particularly vulnerable due to their lack of resources to adapt to these effects of climate change.
The Northwest Region of Florida borders the Gulf of Mexico and will lose significant land as sea levels rise due to global warming. A Florida State University study is examining the effects of anticipated sea level rise over the next 100 years in this region, including flooding of coastal lands and the loss of pinelands and wildlife habitats. While some local fisheries may benefit from increased coastline, the region's economy and populations will be impacted as coastal areas are flooded and residents are forced to relocate inland.
EOPS_August_28_2017,
Warm air temperatures, abundant sunshine, and drier conditions persisted. River flows are lower in the north. Puget Sound waters are still fresher than in the past 17 years from the combination of abundant spring rain and weak upwelling bringing less salty water from the ocean. July upwelling was stronger, however. Warmer water temperatures are notable in parts of Central Sound, accompanied by large rafts of drifting macroalgae. Diverse blooms in colors of green, orange and red-brown are present in many inlets. Jellyfish abundance is lower this year. Find out how we assess if the benthos is changing.
Ecology Publication No. 17-03-072
The document discusses several ways that climate change is negatively impacting the oceans, including increasing ocean temperatures, acidification, sea level rise, and changes to ocean circulation patterns. These changes are disrupting ecosystems and threatening coral reefs and coastal communities. The oceans have absorbed over 90% of the increased atmospheric heat from climate change and are experiencing impacts that range from rising sea levels and stronger storms to changing ocean circulation currents and increasing acidification levels. If greenhouse gas emissions continue at their current rate, we risk losing coral reefs entirely within the next 20-30 years.
This document discusses how climate change and past land use have degraded salmon habitat in the Nooksack River in Washington state. It describes a project by the Nooksack Tribe to assess climate change impacts and develop strategies to restore salmon habitat. Climate change is projected to exacerbate issues like higher water temperatures, reduced flows, and increased sedimentation from erosion. The Tribe's actions aim to improve conditions through activities like installing logjams, restoring vegetation, reconnecting floodplains, and reducing sediment and water withdrawals.
Is Climate Change, a modern tragedy of the commons?GIOCONTE23
This document discusses climate change and the need for a low carbon society. It addresses whether climate change represents a tragedy of the commons and examines the impacts of climate change around the world. The document also discusses climate change mitigation efforts through renewable energy and energy efficiency.
Is Climate Change, a modern tragedy of the commons?
Duncan & Garfin 2006
1. Borders, Boundaries, and Time Scales
Fronteras, Limites, y Escalas de Tiempo
Proceedings of the Sixth Conference on Research and
Resource Management in the Southwestern Deserts
ExtendedAbstracts: December 2006
Bill Halvorson, Editor
USGS Southwest Biological Science Center
Sonoran Desert Research Station
MAR - 1 2007
2. Native Fish Conservation and Climate Variability in
Southeastern Arizona.
Doug Dunam' and Cregg Garfirl. 'U.S. Fisll 6- Wildlife
Xn';ct; ~CLJMj£,S- University 0/Arizona
The conservalion of nati,'c fish in southeastern Arizona
has always been reliant on finding waler that isn't "used," or
that is not constr.'lined by conflicts thai make sites
unavailable. Examples of conflicts that may render a site
unsuitable or unusable for native fish are: sport fisheries:
low-quality effluent; nonindigcnolls fish; and lando'ller.
lessee, or permittee resistance.
In addition 10 conflicts listed abo'e, the multiple
impacts flowing from other human activities in
southeastern Arizona also impacl ,,'aters. Another issue
impacting waters for native fish conservation is that other
rare aquatic species in southeastern Arizona also need
many of these valers. Some fish species arc not compatible
with other aquatic species in some sites. Climate variability,
including drought, and climate change both have the
potential to al!<'T sitrs for conservation of native fishes in
southeastern AriZOna.
Here we consider southeastern Arizona that area east of
lhe Tohono O'odham Nation and the lower-most (north)
Santa Cruz River, and south of the Gila River. This area
includes parts of the Rio Concepcion, Santa Cruz River,
San Pedro River, Rio Yaqui, and Gila River Basins.
Depending on how they arc included, split, or lumped,
there are 21 species of native fish in southeastern Arizona.
Of those 21 species, 16 still occur in the area. four are
extirpated, and one is extinct. There are 13 species listed
under the Endangered Species Act; nine arc listed as
endangered, four as lhreatened, and an additional species
has been petitioned for listing.
There are a multitude of issues facing native fish in the
study area. Threats that have been factors in the listing of
fish and continue today include the standard litany:
nonindigenous species. species' habitat loss, and reduction
in habitat quality. Habitat destruction and the introduction
of nonindigenous species are responsible for the decline of
98 percem of North American fishes listed as endangered,
threatened, or of special concern (Williams et al. 1985).
Impacts to habitat and impacts from nonindigenous
spedes do not occur independently. Degradation ofaquatic
S)'Stems is a major faclor in the invasion, establishment.
and irruption of nonindigenous species (Aquatic Nuisance
SpecicsTask Force 1994).
Though the discussion here centers on native fish, it is
likely that negative impacts could also occur to olher native
aquatic vertebrates. There are three native ranid frogs
(Rana spp.) and a native salamander (Ambysroma tigr;l1l1m
srrbbet,sj) in southeastern Arizona. There are also several
garter snakes (11lamnoplJis spp.). All arc ofconservation
concern. The single greatest difference in how impacts to
aquatic systems will impact nati'e fish or herpetofauna, is
that the herpetofauna are far more mobile than fish and at
least ha'c the potential to move between aquatic s}'Stems.
That southeastern Arizona and much of the American
Southwest are in drought is well known. What is known
with far less certainty is how long this drought mightlasl.
Currently, only seasonal drought predictions are available
for three-month seasons (e.g.• February·Apri1), at a lead
time of two weeks in advance (e.g., issued January 15).
These predictions. based on a subjecti'e combination of
results of statistical and dynamical climale models and
insights from past climate history, are a'3ilable through the
NOAA Climate Prediction Center. State-of-the-art climate
science does not yet support multi-year or decade-scale
drought predictions. However, instrumental and
paleoclimate records from the South'est indicate that the
region has a history of multi-year and multi-dCClde
drought (Hereford el al. 2002; Jacobs et a!. 2005; Sheppard
et oIl. 2002). Multi-decade drought in the South'est is
controlled primarily by persistent Pacific Ocean-
atmosphere interactions. which have a strong effect on
winter precipitation (Brown and Comrie 2004; Schneider
and Cornudle 2005); persistent Atlantic Ocean circulation
is theorized to ha'e a role in multi-decadal drought in the
Southwest, particularly with respect to summer
precipitation (Gray et al. 20CB; McCabe et al. 2(04). Given
these multi-decade "regimes" of ocean circulation. and the
severity and persistence of the present multi-rear drought,
there is a fair likelihood that this droughl will persisl for
many more years. albeit with periods of high rear-to·year
precipitation variability characteristic of Southwest climate.
The information on how climate change might impact
southeastern Arizona is less certain than currenl drought
predictions. Howevcc, virtually all climate change scenarios
predict that the American Southwest will get '3rmer
during the 21st century (lPeC 2001). Precipitation
predictions show a greater range of possibilities, depending
on the model and emissions scenario (USGCRP 2001). To
maintain the present water balance with warmer
lemperatures and all other biotic and abiotic factors
constant, precipitation will need to increase to keep pace
with the increased evaporation and transpiration caused by
'3rmer temperatures. Key projections 10 keep in mind
include:
• decreased snowpack - an increasing fraction of
winter precipitation could fall as rain instead of snow,
periods of sl10wpack accumulation could be shorter,
and snowpacks could be smaller; ironically, due to
changes in snow-precipitation characteristics. runoff
may decrease e"Cn if total precipitation increases
(Gamn, 2005);
Borders, Boundaries, and TIme Scales 2006 41 CONSERVATION
3. • earlier snowmelt - increased minimum winter and
spring temperatures could melt snowpacks sooner,
causing peak water flows to occur that much sooner
than the historical spring and summer peak flows
(Stewart et aI., 2(04);
• enhanced hydrologic cycle - in a warmer ,rorld an
enhanced hydrologic cycle is expected; flood extremes
could be more common causing more large floods;
droughts may be more intense. frequent, and longer-
lasting.
Continuing drought and climate change, when added
to the historical and continuing threats, will make native
fish conservation in southeastern Arizona even more
difficult. The impact to fish of site desiccation is obvious.
There are many less obvious effects that could occur with
drought and a wanner climate. A site with reduced
str~mf1ow, or a pond or pool with low water levels could
become fishless due to reduced dissoh-ed oxygen. We haw
set"n this occur at three important natural Gila topminnow
(P. ocddenrafjs) sites (i.e. Sharp Spring, Redrock Canyon,
Cienega Creek).
Drought and climate change will also impact
watersheds and subsequently the water bodies in those
watersheds. Drought, and especially long-term climale
change will impact how ecosystems and watersheds
function. These changes will cause a cascade ofecosystem
changes, which may be hard to predict and are likely to
occur non-linearly.
As an example. drought and climate change will cause
changes in fire regimes in all southeastem Arizona
vegetation communities. The timing, frequency. extent, and
destructiveness of wildfires is likely to increase and may
also facilitate the invasion and increase of nonindigenous
plants. These changed fire regimes will change vegetation
communities, the hydrological cycle, and nutrient cycling
in affected watersheds (Brown ct OIL 2004). Some regional
analyses conservatively predict that acreage burned
annually will double with climate change (MacKenzie el a1.
2004). Such watershed impacts could cause enhanced
scouring and sediment deposition, more extreme flooding
(quicker and higher peak flows), and changes to water
quality. ) Severe watershed impacts such as these, 'hen
added to reductions in e~1ant aquatic habitats. will severely
restrict sites ll'ailable for the consenration of nati"e fish
and other aquatic vertebrates and make management of
extant sites more difficult.
Many of the predictions about the impacts of climate
change arc based on modcling. but man}' predictions have
already occurred. The tree die-offs and fires that have
occurred in the Southwest early in this century shO' the
impacts of the curren! drought.
The potenlial impacts from climate change and drought
need to be addressed, while considering the potential
duration of and uncertainly of their effects. The
precautionary principle should be adhered to when
planning for native fish conservation. While there may not
necessarily be solutions to the problems presented by
drought and climate change, there are things that can be
done to minimi7-c the impacts to native fishes and increase
the resilience of fish habitat in southeastern Arizona.
After the fires of 2005, the Ari7.0na Game and Fish
Department and U.S. Fish and Wildlife Service began
drafting a salvage protocol for native fish. This protocol
should be expanded to include any impacts to nati>e fish,
such as drought and climate change, invasion of
nonindigenous species, and release of em'ironmental
contaminants.
We recommend the following actions:
• Natural resource managers should be informed about
climate change:
• Constructive dialog regarding native fish consen-ation
needs and drought and climate change should occur
now;
• Consen'ation planning should address climate change
through adaptive management provisions;
• Important fish populations should be replicated across
the landscape when possible:
• Important fish populations should be replicated in
refuge populations;
• Genetic information will be crucial to determine
important populations;
• Natural resource and land management agencies
should begin work on identifying and creating
potential refuge sites.
Regular and systematic monitoring of important
aquatic sites and fish populations, and expanded
monitoring programs are essential to enhancing drought
prerarcdness for fish conservation. Also, research focused
on specific impacts of climate change in southeastern
Arizona would be incredibly useful 10 managers. Lastly, th"
uncertainty surrounding the timing and impacts of climate
change requires flexibility and the need for adaptive
management Agencies do not have a good track record of
effectively implementing adaptive management, but the
conservation of native fish and other aquatic wrtebrates
requires it.
References Cited
Aquatic l'uisance Species lask Force. 1994. Report to
Congress: Findings, conclusions, and
recommendations of the intentional introductions
policy rC'iew. Http;llnas.nfrcg.gov/iirpt.htm.53pp.
Brown, T. J., B. L. Hall. and A. L Westerling. 2004. The
impact of twenty-first century climate change on
wildlife fire danger in the western United States: An
spplications perspccth>e. Climatic Change 62:365-388.
CONSERVATION 42 Sixth Conference on Research and Resource Management in the Southwest Deserts
4. Brown, D. P., and A. C. Comrie. 2004. Awinter
precipitation 'dipole' in the western United States
associated with multidecadal ENSO variability.
Geophysical Research Letters 31.
Garlln. G. 2005. Climate change in the Colorado River
Basin. P. 36-44 in Colorado River Basin Climate: Paleo.
Present. Future. at http://wwa.colorado.edu/
resourcesJcolorado_ri'er/Colorado_Ri'er_Basin~C1im
ate.pdf
Gray, S.T., J. L.Betancourt, C. L.Fastie. and S. T. Jackson.
2003. Patterns and sources of multid('(3dal oscillations
in drought-sensitive tree-ring records from the central
and southern Rocky Mountains. Geophysical Research
Leners 30: I0.1 029/2002GLO 16154.
Hereford, R.• It H. 'ebb, and S. Graham. 2002.
Precipitation history of the Colorado Plateau Region.
1900-2000. USGS Fact Sheet 119-02
(http:"geopubs.,,'r.usgs.gov/fact-sheet/fs119-02/).
IPCC (Intergovernmental Panel on Climate Change).
2001. Climate Change 2001: The scientific basis.
Contribution of Working Group 1to the third
assessment report of the intergo'ernmental Panel on
Climate Change. Houghton. J. T.,Y. Ding. D. J. Griggs,
M. Noguer, P. J. "'an der Linden, X. Dai, K. Maskell,
and C. A. Johnson. «Is. Cambridge Univ. Press.
Cambridge. United Kingdom and Ne..... York, NY.
Jacobs, K. L.. G. M. Gartin, B.I. Morehouse. 2005.
Climate science and drought planning: The Arizona
experience. Journal of the American Water Resources
Association 41:437-445.
McCabe. G. j .• M. A. Palecki. and J. L. Betancourt. 2004.
Pacific and Atlantic Ocean influences on multidecadal
drought frequency in the United States. Proceedings of
the National Academy of Sciences 101 (12):4136-4141.
MacKenzie. D.• Z. Gedalof. D. L. Peterson. and P. Mote.
2004. Climatic change, wildlife. and conservation.
Conservation Biology 18(4):890-902.
Schneider, N., and B. D. Cornucllc. 2005. The forcing of
the Pacific Decadal Oscillation. Journal of Climate
18:4355-4373.
Sheppard, P. R., A. C. Comrie, G. D. Packin. K.
Angersbach. and M. K. Hughes. 2002. The climate of
the Southwest. Climate Research 21:219~238.
Stewart. I. T., D. R. Caran. M. D. Dettinger. 2004.
Changes in snowmelt runoff timing in western North
American under a 'business as usual' climate change
scenario. Climatic Change 62: 217-32.
USGCRP (U.S. Global Change Research Program). 2001.
Preparing for a changing climate: the potential
consequences of climate variability and change-
South,,·cst. A Report of the Southwest Regional
Assessment Group for the U.S. Global Change
Research Program. Institute for the Study of Planet
Earth. Uni"ersity ofArizona. Tucson, 6Opp.
Williams, J. E.• D. B. Bo,,'man. J. E. Brooks. A. A. Echelle.
R. J. Ed..ards. D. A. Hendrickson, and J. J. Landye.
1985. Endangered aquatic ecosystems in North
American deserts with a list of vanishing fishes of the
region. Journal of the Arizona-Nevada Academy of
Science 20: 1-62.
Resumen:
La conservaci6n de peces nativos en el surestI.' de
Arizona ha sido sicmpre un asunto rclacionado con
encontrar agua que no estc slendo "us.1da~ 0 tenga
confliclos que haccn cl sitio indisponible. Ejemplos que
causan a un sitio inapropiado 0 inusable para peces nativos
son: pesca deportiva, aguas corrientes de baja calidad, peces
no nativos y uso por ganado. La variabilidad c1imatica, es
dccir.los cambios c1imaticos y la sequia tiencn eI potencial
de aherar negativ3 )' dr.i5ticamente las actividadcs de
conserv3ci6n para peces nath'Os. Adcffias de los impactos
enlistados arriba, los impaetos multiples que fluyen de
actividades humanas en eI sureste de Arizona tambien
impactan las aguas. EI ultimo asunto que impacta las aguas
para consen'3ci6n de peces nativos 10 conforman otras
especies acuaticas raras en el sureste de Arizona (ranas
r3nidas y una salamandra) tambien necesitan muchas de
estas aguas. A!gunas especies de peces pueden no ser
compatibles con otras especies acu31icas raras en algunos
sitios. Los impactos potenciales del cambio c1imatico y la
sequla nccesitan ser alcndidos par cl factor tiempo y la
incertidumbre de los cfcclOS. Debe anadirse el principio
preventivo a los planes de conservaci6n para peces nativos.
Aunque puede no haber necesariamente soluciones a los
problemas prcsentados por la sequla y los cambios
c1imaticos. existen cosas que pucdcn hacerse para
minimizar los impactos en peces nati'os del $Urestc de
Arizona.
Borders, Boundaries, and Time Scales 2006 43 CONSERVATION