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The number of fish collected in routine monitoring surveys often varies from year to year, from lake to lake, and from location to location within a lake. Although some variability in fish catches is expected across factors such as location and season, we know less about how large-scale disturbances like climate change will influence population variability. The Laurentian Great Lakes in North America are the largest group of freshwater lakes in the world, and they have experienced major changes due to fluctuations in pollution and nutrient loadings, exploitation of natural resources, introductions of non-native species, and shifting climatic patterns. In this project, we analyzed established long-term data about...
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Many inland waters across the United States are experiencing warming water temperatures. The impacts of this warming on aquatic ecosystems are significant in many areas, causing problems for fisheries management, as many economically and ecologically important fish species are experiencing range shifts and population declines. Fisheries and natural resource managers need timely and usable data and tools in order to understand and predict changes to lakes and their biota. A previous Northeast CSC-funded project modeled lake temperatures to help state agencies in the Midwest understand trends in walleye and largemouth bass populations and predict lake-specific fish populations under future climate scenarios. These...
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Native Americans are one of the most vulnerable populations to climate change in the United States because of their reliance upon the natural environment for food, livelihood, and cultural traditions. In the Southwest, where the temperature and precipitation changes from climate change are expected to be particularly severe, tribal communities may be especially vulnerable. Through this project, researchers sought to better understand the climate change threats facing the Pyramid Lake Paiute Tribe of northwestern Nevada. Researchers found that the Tribe’s vulnerability to climate change stems from its dependence on Pyramid Lake, which may experience reduced water supply in the future. This will potentially have negative...
Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, CASC, Completed, Federal, Fish, All tags...
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Every 10 years, state fish and wildlife management agencies must comprehensively review, and if necessary revise, their State Wildlife Action Plans (SWAPs). These are important planning documents that serve as blueprints for conserving fish, wildlife, and their habitat, and for preventing species listings in each state. These plans focus on species that have been identified as being of greatest conservation need, but also address the full array of wildlife and wildlife-related issues in a state. States last reviewed and revised their SWAPs in 2015, and will do so again in 2025. In 2016-2017, the Northeast Association of Fish and Wildlife Agencies (NEAFWA) synthesized the 14 SWAP reports from the Northeast region....
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As freshwater streams and native fish are threatened by changing environmental conditions, efforts to coalesce existing data and integrate modeling and projection tools are increasingly necessary for informing effective land, water, and species management. For example, identifying and integrating disparate datasets of streamflow, stream water temperature and species distribution is critical for development of statistical models that inform comprehensive, multi-species climate vulnerability assessments to help managers plan for the future. Regional assessments of the vulnerability of native fishes to climate change in the Pacific Northwest have focused almost exclusively on salmonids (a family of fish that includes...
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In the Gulf of Alaska, streams will experience more dramatic low water events, interspersed with larger and potentially more frequent high flow events in the coming decades. Reduced stream flows are likely to occur due to diminished snowpack and seasonal droughts, while higher flow events are likely to occur with more frequent storms and rain-on-snow events. These changes are likely to influence the growth trajectories of juvenile salmon, such as coho salmon and chinook salmon, that live up to two years in freshwater before migrating to the ocean. Stream flows can influence juvenile salmon growth by modifying food availability, water clarity, temperature, and predation risk. This high-resolution study examines...
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The Jamestown SKlallam and Port Gamble SKlallam tribes, and many other tribes in the PacificNorthwest, rely on ESA listed fish species for subsistence as well as cultural and economic practices.Concern has grown over the impacts climate change might have throughout the 21st Century ontraditional fishing areas. We will employ well validated hydrological numerical modeling methodologiesto project streamflow changes in five major fish-bearing streams and their tributaries in the NorthwestOlympic Peninsula in Washington State. Results from this study will be made available to tribal leadersand natural resource managers for planning purposes and to assess potential freshwater habitatvulnerability under a variety of plausible...
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Yellow perch and alewife are ecologically, economically, and culturally important fish species in Lake Michigan whose populations support recreational and commercial fisheries. However, both of these species’ populations have been in decline for over 20 years. This project seeks to understand the factors affecting variability in offspring survival of yellow perch and alewife in Lake Michigan in order to project survival under scenarios of future climate change. Like other fish species, yellow perch and alewives produce huge numbers of small offspring, but most die early in life. Small changes in survival at this early stage can have a strong impact on the number of fish that ultimately contribute to fisheries....
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Pacific salmon need cold water and quality habitat to survive. As climate change continues to increase river temperatures, effective methods to restore cool-water refuges and logjam habitats need to be determined. Many salmon habitat restoration projects in the Pacific Northwest have built engineered logjams (ELJs) to create deep, cool pools and reconnect rivers to floodplains to replenish cool groundwater. However, the success of these projects is not often studied. This project will study restoration effectiveness in helping salmon adapt to climate change so that this once-abundant resource can continue to enrich the local culture, economy, and environment. The Lummi Nation and Nooksack Tribe’s cultural and...
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Stream fish are in peril from a changing climate, particularly for species with restricted distributions or populations on the southern edge of their range. For these fish, the opportunity to escape warming temperatures is limited by the network of stream channels accessible to them. To deal with temperatures beyond their physical capacity, fishes must move, adapt, or die. However, little is known for many of these species about their preferred temperatures, critical temperature limits, or capacity to adapt to or tolerate increasing temperatures. Researchers will measure the preferred temperatures and tolerance of two stream fish that are vulnerable to climate change: the Ozark Shiner and the Blacknose Shiner. The...
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Inland fisheries have tremendous cultural, economic, and subsistence value. However, climate change brings new stresses to land-locked fisheries that raise novel challenges for resource managers. One fundamental challenge in inland fisheries is how to best assess and manage data-limited fisheries when resources are finite and uncertainty is pervasive. To address this challenge, we will use quantitative models to examine whether indicators of fish population status commonly-measured by managers can serve as a “short-cut” to more data- and capacity-intensive approaches. Further, we will work and communicate directly with state and Tribal fisheries managers to better understand the challenges they face when making...
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The bull trout, listed as threatened under the Endangered Species Act, is well adapted to the cold waters of the Northwest. Recent changes in climate have caused winter flooding and warmer summer water temperatures in the region, reducing the cold-water habitats that bull trout depend on. The southernmost bull trout populations, found in Oregon, Washington, Idaho, Montana, and Nevada, are currently restricted to small reserves where the coldest waters still exist. These shrinking habitats have created a severed environment being further split by dams, poor water quality, and invasive species. The goal of this project was to determine how these factors threaten the species regionally by using predictions of stream...
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Background With few exceptions, the contemporary and past effects of acidification on fish populations and communities in streams across acid-sensitive regions of NY have not been documented. The pervasive lack of information only permits anecdotal insight into the spatial effects of acidification on stream-fish assemblages and essentially precludes any broad effort to quantify temporal trends and potential recovery of fish assemblages in less acidic or less toxic streams. Though the effects of acidification on fish assemblages have been qualified in several streams of the eastern Adirondacks during 1979, the 1980s, and early 2000s, (Schofield and Driscoll 1987; Simonin et al. 2005) quantitative impacts were...
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Salmon runs are an important time when salmon migrate from the ocean to freshwater, swimming upriver to reach spawning beds. These annual events provide an important food source for both predators and for local communities. However, Recent declines in salmon runs have caused hardship in subsistence fishing communities throughout Alaska, particularly in the Yukon River Basin. To adapt to a changing climate, fishing communities, natural resource managers, and scientists need to measure and understand climate impacts onto salmon runs in this region. To monitor changes in salmon populations and manage fisheries, the Alaska Department of Fish and Game (ADFG), U.S. Fish and Wildlife Service (USFWS), and Tanana Chiefs...
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A strong data foundation is needed to inform science-based decisions for fisheries management at a watershed level. In preparation for a shift towards comprehensive watershed-scale planning, Arizona Game and Fish Department (AGFD) is developing a fisheries data management system with an initial focus on compiling and formatting several hundred thousand fish survey and stocking records. Fish data will be integrated within a Geographic Information System (GIS) by georeferencing observations to an existing national spatial framework (National Hydrography Dataset), which will allow for broader transferability to watersheds shared with neighboring states, creating a seamless layer not limited by state boundaries. In...
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, AZ-01, AZ-02, AZ-03, AZ-04, All tags...
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Climate change poses a variety of threats to biodiversity. Most efforts to assess the likely impacts of climate change on biodiversity try to rank species based on their vulnerability under changed environmental conditions. These efforts have generally not considered the ability of organisms to adjust their phenotype to the changing environment. Organisms can do this by one of two ways. First, they can adjust their phenotype via non-evolutionary pathways. Second, they can undergo adaptive evolutionary change. We used two interconnected approaches to evaluate thermal adaptation capacity in a cold-water fish species. 1) Using tagging data, we estimated thermal performance curves for wild fish. The curves indicate...
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The Food and Agriculture Organization of the United Nations (FAO) documents the status and trends of marine fish stocks that represent approximately 80% of global marine catch. These stocks are routinely monitored, and the FAO assessment describes the extent of exploitation against different reference points - such as underfished, sustainable fished, or overfished. Although inland fisheries, which represent 12% of total global capture fishery production, provide important economic and social services, including accessible and affordable high-quality protein to some of the world’s most vulnerable populations, FAO has no comparable system for assessing the state of inland fisheries. This is a critical knowledge gap...
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The impacts of climate change are widespread and accelerating. As natural resource managers are tasked with maintaining and protecting species and ecosystems, options for minimizing the impacts of climate change are needed. One option for climate adaptation focuses on resistance, which seeks to preserve, as much as possible, the historical structure, composition, and function of an ecosystem in the face of changing climate conditions. One of the primary resistance strategies is to identify and conserve what are known as climate change refugia. These refugia represent areas that remain relatively buffered from contemporary climate change over time and therefore enable the persistence of valued physical, ecological,...
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Fish that are harvested from rivers and lakes play an important role in ensuring global food security. However, data on river fisheries is not collected in any standardized format globally. Although targeted analyses have been conducted on certain river systems, the approaches used, such as intensive field sampling, are not feasible at a global scale. Most river fish are harvested by small-scale operations and in countries that lack the necessary infrastructure and technology that would enable regular reporting of harvests. Therefore, alternative approaches are needed for estimating the harvest potential of river fisheries at a global scale. Given changing climate conditions and the potential impact of these changes...
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Walleye, a socially and economically important sportfish across much of North America, are experiencing population declines in many lakes throughout their range. Studies suggest that multiple factors – potentially linked to climate change – are contributing to the decline of walleye, including changes in lake temperatures, loss of habitat, increasing water clarity (perhaps due to drought), and interactions with other fish. This research seeks to identify the mechanisms that underlie declining walleye populations, particularly the low survival rate of young walleye. Data will be collected through a whole-lake experiment, an analysis of long-term data from lakes in northern Wisconsin, and simulation modeling. Members...
map background search result map search result map Rangewide Climate Vulnerability Assessment for Threatened Bull Trout Understanding the Varying Responses of Fish Populations to Future Climate Climate Change Vulnerability of the Pyramid Lake Paiute Tribe in the Southwest A Landscape Approach for Fisheries Database Compilation and Predictive Modeling Can Wildlife Species Evolve in Response to a Changing Climate? Informing Species Vulnerability Assessments Assessing Spatiotemporal Patterns in Fish Assemblages from Acid-Sensitive Streams in the Adirondack and Catskill Mountains Safe Operating Space for Walleye: Understanding the Conditions Needed to Sustain Recreational Fisheries in a Changing World Modeling the Effects of Climate Change on Fish-bearing Streams in Western Washington “Hyperscale” Modeling to Understand and Predict Temperature Changes in Midwest Lakes Assessing Climate Change Threats and Adaptation Strategies in Northeast State Wildlife Action Plans Estimating Global River Fisheries Harvest Potential Assessing the State of Global Inland Fisheries Developing A National Framework for Incorporating Climate Change Refugia into Conservation and Adaptation Planning Understanding and Forecasting Potential Recruitment of Lake Michigan Fishes Linking Stream Fish Thermal Ecology and Adaptive Capacity to Inform Watershed-Based Management and Species Status Assessments Development of a Streamflow Data Catalog and Evaluation of the Vulnerability of Sensitive Fish Species to Climate Change Across the Pacific Northwest Climate Adaptation in Yukon River Fisheries: A Robust Alternative Approach to Assess Salmon Run Size Using Environmental DNA The Influence of Stream Flow Patterns on Juvenile Salmon Growth in Southeast Alaska South Fork Nooksack River Engineered Logjam Effectiveness Project: Are Engineered Logjams Creating Cool-Water Refuges for Pacific Salmon on a Thermally Impaired River? Climate Adaptation for Data-Limited Inland Fisheries Climate Change Vulnerability of the Pyramid Lake Paiute Tribe in the Southwest Modeling the Effects of Climate Change on Fish-bearing Streams in Western Washington South Fork Nooksack River Engineered Logjam Effectiveness Project: Are Engineered Logjams Creating Cool-Water Refuges for Pacific Salmon on a Thermally Impaired River? Safe Operating Space for Walleye: Understanding the Conditions Needed to Sustain Recreational Fisheries in a Changing World A Landscape Approach for Fisheries Database Compilation and Predictive Modeling Linking Stream Fish Thermal Ecology and Adaptive Capacity to Inform Watershed-Based Management and Species Status Assessments Development of a Streamflow Data Catalog and Evaluation of the Vulnerability of Sensitive Fish Species to Climate Change Across the Pacific Northwest Rangewide Climate Vulnerability Assessment for Threatened Bull Trout Climate Adaptation for Data-Limited Inland Fisheries “Hyperscale” Modeling to Understand and Predict Temperature Changes in Midwest Lakes Understanding and Forecasting Potential Recruitment of Lake Michigan Fishes Assessing Climate Change Threats and Adaptation Strategies in Northeast State Wildlife Action Plans Understanding the Varying Responses of Fish Populations to Future Climate The Influence of Stream Flow Patterns on Juvenile Salmon Growth in Southeast Alaska Can Wildlife Species Evolve in Response to a Changing Climate? Informing Species Vulnerability Assessments Climate Adaptation in Yukon River Fisheries: A Robust Alternative Approach to Assess Salmon Run Size Using Environmental DNA Developing A National Framework for Incorporating Climate Change Refugia into Conservation and Adaptation Planning Estimating Global River Fisheries Harvest Potential Assessing the State of Global Inland Fisheries