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While siltation in the areas between reservoir and riverine ecosystems can damage habitat, there is emerging evidence to suggest certain water management strategies could promote high fish diversity in these areas—but this needs to be further studied. For example, new information on young fish species in Lake Texoma, a reservoir in the Red River watershed along the Texas/Oklahoma border, will help refine the priorities of the Gulf Coast Prairie Landscape Conservation Cooperative relating to certain LCC focal species, including alligator gar and white bass.
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Changes in the Earth’s climate are expected to impact freshwater habitats around the world by altering water temperatures, water levels, and streamflow. These changes will have consequences for inland fish – those found within lakes, rivers, streams, canals, reservoirs, and other landlocked waters – which are important for food, commerce, and recreation around the world. According to the U.S. Fish and Wildlife Service, in 2011, 33.1 million people fished and spent $41.8 billion in the United States alone. Yet to date, little comprehensive research has been conducted to investigate the effects of climate change on inland fisheries at a large scale. The aim of this project was to summarize the current state of...
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The stream systems of Hawai‘i are unique and home to many rare species, including five native fish and five native shellfish. These native species have amphidromous life cycles, meaning that they spend part of their lives in the ocean and part in freshwater streams. Stream flow serves as a vital natural pathway, connecting saltwater and freshwater habitats so that these animals can migrate between them and carry out critical life stages (e.g., development, reproduction). Over the last 20 years, the amount of rainfall in Hawai‘i has decreased, and climate models predict that this trend will continue. It is uncertain how reduced rainfall will affect stream flow and, consequently, the native stream species that depend...
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Better understanding of the overall fishery production in river systems around the world may influence general development policies and practices for aquatic systems and sustainable maintenance of an important protein source (particularly for poorer countries where fish are relatively readily available to the local human population). With this study, researchers worked to fill this knowledge gap by estimating the overall fishery production in river networks globally using multivariate statistical models with explanatory variables compiled from remotely sensed and inā€situ observations. The freshwater fish production in rivers was estimated by: 1. Developing models using key drivers (temperature, precipitation,...
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Increasing temperatures and decreasing precipitation threaten the persistence of the Rio Grande cutthroat trout, the southernmost subspecies of cutthroat trout, found only in parts of New Mexico and Colorado. This subspecies appears to be more vulnerable to drought than more northern subspecies, because it occupies small and fragmented streams which are at greater risk of drying up during drought. Most notably, in 2002 drought in the Southwest resulted in the loss of 14 different Rio Grande cutthroat trout populations – about 10% of the total population. While it is known that drought is having an effect on Rio Grande cutthroat trout, the specific ways in which individuals and populations are affected by drought...
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Water temperatures are warming in lakes and streams, resulting in the loss of many native fish. Given clear passage, coldwater stream fishes can take refuge upstream when larger streams become too warm. Likewise, many Midwestern lakes “thermally stratify” resulting in warmer waters on top of deeper, cooler waters. Many of these lakes are connected to threatened streams. To date, assessments of the effects of climate change on fish have mostly ignored lakes, and focused instead on streams. Because surface waters represent a network of habitats, an integrated assessment of stream and lake temperatures under climate change is necessary for decision-making. This work can be used to inform the preservation of lake/stream...
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Despite the important effects of inland fisheries on food, economy, and ecosystem services throughout the world, no comprehensive understanding on the status or key drivers of inland fisheries exists (Beard et al. 2011). Our lack of knowledge regarding the status results from the common belief that inland fishery harvests are widely under reported (FAO 2009; Welcomme et al. 2010), particularly the contributions from recreational, artisanal, and illegal fisheries (FAO 2003; Allan et al. 2005). Overcoming this knowledge gap has no simple solution, given that resources to conduct on-the-ground fisheries assessments are lacking throughout much of the world, particularly in Africa or Asia where the majority of the inland...
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Many fish species, including mountain whitefish and bull trout, need a variety of habitat types throughout their different life stages that include appropriate water temperatures, flows, refugia from predators, and adequate food. Key to a fish finding and using these different habitats is the connectivity between them. Changing conditions in the future, including increased air and water temperatures, are expected to impact many fish populations, as well as the rivers, streams, and habitats where they’re found. This project, jointly funded by the Great Northern Landscape Conservation Cooperative, focused on the Methow River Basin in the arid east-central part of Washington State. The project team used data on fish...
The distribution and abundance of small, schooling forage fish (e.g., sandlance, capelin) in Alaska is known from small-scale directed studies, but mostly inferred from incidental catches in large-scale trawl surveys that were not designed (by gear or location) to sample forage species. In contrast, seabirds are conspicuous, highly mobile, samplers of forage fish that go to great distances (100+ km) and depths ( 200m) to locate ephemeral prey with great efficiency. Thus, data on their dietary habits provides a valuable complement to traditional fisheries sampling. We propose to analyze large diet databases for three abundant seabirds (puffins, murres and kittiwakes) to: 1) characterize forage fish communities in...
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Topock Marsh is a large wetland adjacent to the Colorado River and main feature of Havasu National Wildlife Refuge (Havasu NWR) in southern Arizona. In 2010, U.S. Fish and Wildlife Service (FWS) and Bureau of Reclamation began a project to improve water management capabilities at Topock Marsh and protect habitats and species. Initial construction required a drawdown, which caused below-average inflows and water depths in 2010-2011. Co-applicants Daniels and Haegele of FORT monitored Topock Marsh during the drawdown and immediately after, thus obtained information on immediate effects. However, stress from the drawdown may have a delayed effect on aquatic resources; additionally, significant changes to the infrastructure...
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2013, AZ-04, Applications and Tools, Arizona, CA-08, All tags...
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Building upon the successful efforts of SARP, Texas Parks and Wildlife Department (TPWD), and other federal, state, and local partners to establish and implement NFCAs in the Llano River watershed, TX and Chipola River watershed, FL (Birdsong et al., 2015, Garrett et al. 2015), we will coordinate a series of watershed-based conservation planning workshops focused on eight priority river systems in the Great Plains (i.e., the White River, Platte River, Arkansas-Kansas Rivers, Canadian River, Deep Fork River, Red River, Brazos River, and Colorado River). We will utilize conservation assessments and conservation planning tools recently developed by Labay and Henderickson (2014; http://repositories.lib.utexas.edu/handle/2152/27744)...
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During the severe drought of 2010-2015, several communities in southeast Oklahoma almost ran out of water. Some of these communities rely on streams and rivers as their sole source of water and when these sources almost ran dry, it left them searching for alternatives and wondering how to continue growing, economically, with this water uncertainty. The possibility of climate change has these communities further concerned, primarily because they do not know what to expect. Previously, the USGS, both Chickasaw and Choctaw Nations collaborated on a project to apply a range of possible climate change scenarios to the Red River watershed to determine future water availability. This study will focus specifically on southeast...
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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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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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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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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 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,...


map background search result map search result map Rangewide Climate Vulnerability Assessment for Threatened Bull Trout Climate Change Threats to Fish Habitat Connectivity Climate Change Vulnerability of the Pyramid Lake Paiute Tribe in the Southwest Development of a Decision Support Tool for Water and Resource Management using Biotic, Abiotic, and Hydrological Assessments of Topock Marsh A Landscape Approach for Fisheries Database Compilation and Predictive Modeling State of the Science on the Effects of Climate Change on North American Inland Fishes Can Wildlife Species Evolve in Response to a Changing Climate? Informing Species Vulnerability Assessments An Assessment of Midwestern Lake and Stream Temperatures under Climate Change The Effects of Drought on Rio Grande Cutthroat Trout: The Role of Stream Flow and Temperature Use of River-Reservoir Interface Habitats by Larval and Juvenile Fishes: Influence of Lateral Connectivity and Multi-Scale Environmental Conditions Global Assessment of River Fish Production and Potential Global Change Implications Developing New Strategies for Modeling and Assessing the Response of Global Inland Fisheries to Regional Changing Climate Watershed-Based Conservation Planning to Inform Selection and Implementation of a Network of Native Fish Conservation Areas in the Great Plains Assessing the Impact of Future Climate on Hawai‘i’s Aquatic Ecosystems Evaluation of Sustainable Water Availability in Drought Prone Watersheds in Southeastern Oklahoma 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 Developing A National Framework for Incorporating Climate Change Refugia into Conservation and Adaptation Planning Development of a Decision Support Tool for Water and Resource Management using Biotic, Abiotic, and Hydrological Assessments of Topock Marsh Use of River-Reservoir Interface Habitats by Larval and Juvenile Fishes: Influence of Lateral Connectivity and Multi-Scale Environmental Conditions Climate Change Vulnerability of the Pyramid Lake Paiute Tribe in the Southwest The Effects of Drought on Rio Grande Cutthroat Trout: The Role of Stream Flow and Temperature Modeling the Effects of Climate Change on Fish-bearing Streams in Western Washington Assessing the Impact of Future Climate on Hawai‘i’s Aquatic Ecosystems Climate Change Threats to Fish Habitat Connectivity Evaluation of Sustainable Water Availability in Drought Prone Watersheds in Southeastern Oklahoma A Landscape Approach for Fisheries Database Compilation and Predictive Modeling Rangewide Climate Vulnerability Assessment for Threatened Bull Trout Watershed-Based Conservation Planning to Inform Selection and Implementation of a Network of Native Fish Conservation Areas in the Great Plains An Assessment of Midwestern Lake and Stream Temperatures under Climate Change “Hyperscale” Modeling to Understand and Predict Temperature Changes in Midwest Lakes Assessing Climate Change Threats and Adaptation Strategies in Northeast State Wildlife Action Plans Can Wildlife Species Evolve in Response to a Changing Climate? Informing Species Vulnerability Assessments State of the Science on the Effects of Climate Change on North American Inland Fishes Developing A National Framework for Incorporating Climate Change Refugia into Conservation and Adaptation Planning Global Assessment of River Fish Production and Potential Global Change Implications Developing New Strategies for Modeling and Assessing the Response of Global Inland Fisheries to Regional Changing Climate