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A paradox of invasion biology is that even though native species are locally adapted to environmental conditions, nonnative species without this advantage often invade. Ecologists have advanced four main theories to explain why invaders are successful in some places and not others: biotic resistance, environmental resistance, human disturbance, and natural enemies. However, none of these theories alone can account for invasions by two trout species outside their native ranges in North America. Brook trout (Salvelinus fontinalis) are able to displace native cutthroat trout (Oncorhynchus clarkii) in the inland western US, but are themselves displaced by nonnative rainbow trout (O. mykiss) in the southeastern US. An...
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The source of this coverage data set is the fish biodiversity maps created for The Nature Conservancy (TNC) as part of their Hexagon Project. Professor Peter Moyle and his graduate student, Paul Randall, of the Department of Wildlife and Fisheries Conservation Biology at the University of California, Davis were hired to produce range maps for all known fish species that presently occur in California. Each coverage denotes a separate fish species (refer to the species coverage key below).
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The source of this coverage data set is the fish biodiversity maps created for The Nature Conservancy (TNC) as part of their Hexagon Project. Professor Peter Moyle and his graduate student, Paul Randall, of the Department of Wildlife and Fisheries Conservation Biology at the University of California, Davis were hired to produce range maps for all known fish species that presently occur in California. Each coverage denotes a separate fish species (refer to the species coverage key below).
Salmonids, a group of coldwater-adapted fishes of enormous ecological and socio-economic value, historically inhabited a variety of freshwater habitats throughout the Pacific Northwest (PNW). Over the past century, however, populations have dramatically declined due to habitat loss, overharvest, and invasive species. Consequently, many populations are listed as threatened or endangered under the U.S. Endangered Species Act. Complicating these stressors is global warming and associated climate change. Overall, aquatic ecosystems across the PNW are predicted to experience increasingly earlier snowmelt in the spring, reduced late spring and summer flows, increased winter flooding, warmer and drier summers, increased...
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Salmonids, a group of coldwater adapted fishes of enormous ecological and socio-economic value, historically inhabited a variety of freshwater habitats throughout the Pacific Northwest (PNW). Over the past century, however, populations have dramatically declined due to habitat loss, overharvest, and invasive species. Consequently, many populations are listed as threatened or endangered under the U.S. Endangered Species Act. Complicating these stressors is global warming and associated climate change. Overall, aquatic ecosystems across the PNW are predicted to experience increasingly earlier snowmelt in the spring, reduced late spring and summer flows, increased winter flooding, warmer and drier summers, increased...
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This project will look at how climate change has altered hydrologic systems, Pacific salmon habitat, and survival of salmon in the Nooksack River watershed. It will develop an adaptation plan that can be adopted and integrated into management plans.Project Objectives for NPLCC funding:1. Assess climate change impacts on fish and fish biology and inform salmon habitat restoration actions aimed at perpetuating all nine salmonid species in the Nooksack River basin in the face of climate change (partially funded by proposed NPLCC funding).2. Conduct a vulnerability assessment that will ultimately reduce sensitivity, reduce exposure, and increase adaptive capacity of salmon to climate change impacts (partially funded...
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Note: this data release has been superseded by version 3.0, available here: https://doi.org/10.5066/P1385SV2 Data were collected as part of a long-term capture-recapture program to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon and Clear Lake Reservoir, California. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year since 1995.PIT tagged species were encountered in netting efforts, remote transceivers, and active scanning on bird colonies across the Upper Klamath River...
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DOI, USDA, state fisheries managers, and NGOs are increasingly consumed with the recovery and restoration of native trout and salmon throughout their range. Almost all of the native inland cutthroat species, grayling and bull trout have been proposed for listing under the Endangered Species Act, a number are currently listed as �Threatened�, while others are under review. Trout and salmon historically inhabited a variety of freshwater habitats (streams, rivers, lakes, ponds, reservoirs), but have declined due to habitat degradation, fragmentation, and introductions of nonnative species. As such, the remaining intact populations of native trout, char, and grayling species in the western United States are largely...
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The source of this coverage data set is the fish biodiversity maps created for The Nature Conservancy (TNC) as part of their Hexagon Project. Professor Peter Moyle and his graduate student, Paul Randall, of the Department of Wildlife and Fisheries Conservation Biology at the University of California, Davis were hired to produce range maps for all known fish species that presently occur in California. Each coverage denotes a separate fish species (refer to the species coverage key below).
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Oregon’s Upper Klamath Basin is one of the warmest watersheds in the Pacific Northwest. Despite its naturally warm waters, the basin supports abundant redband trout. These are some of the largest-bodied trout in the entire U.S., and are a culturally and economically important species, providing the last remaining subsistence fishery for the Klamath Tribes and drawing recreational anglers. The ability of this coldwater species to survive in one of the region’s warmest watersheds could hold valuable clues for conservation in the face of warming global temperatures, which represents one of the biggest threats to North America’s coldwater fish. Previous research has found that redband trout rely heavily on spring-fed...
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This project will look at how climate change has altered hydrologic systems, Pacific salmon habitat, and survival of salmon in the Nooksack River watershed. It will develop an adaptation plan that can be adopted and integrated into management plans. Project Objectives for NPLCC funding: 1. Assess climate change impacts on fish and fish biology and inform salmon habitat restoration actions aimed at perpetuating all nine salmonid species in the Nooksack River basin in the face of climate change (partially funded by proposed NPLCC funding). 2. Conduct a vulnerability assessment that will ultimately reduce sensitivity, reduce exposure, and increase adaptive capacity of salmon to climate change impacts (partially funded...
map background search result map search result map Predicting Climate Change Impacts on River Ecosystems and Salmonids across the Pacific Northwest The Potential Influence of Changing Climate on the Persistence of Native Salmonids "at Risk" Variable platyfish (Xiphophorus variatus) ranges in California as of 2002 Sargo (Anisotremus davidsoni) ranges in California as of 2002 Coho salmon ranges in California as of 2002 Nooksack River Climate Change Vulnerability Assessment, Restoration Planning, and Adaptation Plan Nooksack Indian Tribe NPLCC Final Progress Reporting How Will Coldwater Fish Survive in a Warming Future? Identifying Life-Stage Specific Use of Coldwater Refugia in the Klamath Basin and Willamette River PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin 1993-2023 (ver. 2.0, August 2023) Sargo (Anisotremus davidsoni) ranges in California as of 2002 Variable platyfish (Xiphophorus variatus) ranges in California as of 2002 Nooksack River Climate Change Vulnerability Assessment, Restoration Planning, and Adaptation Plan Nooksack Indian Tribe NPLCC Final Progress Reporting PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin 1993-2023 (ver. 2.0, August 2023) How Will Coldwater Fish Survive in a Warming Future? Identifying Life-Stage Specific Use of Coldwater Refugia in the Klamath Basin and Willamette River Coho salmon ranges in California as of 2002 Predicting Climate Change Impacts on River Ecosystems and Salmonids across the Pacific Northwest The Potential Influence of Changing Climate on the Persistence of Native Salmonids "at Risk"