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The Past as a Prelude to the Future: Assessing Climate Effects on Native Trout in the U.S.

Using the Past as a Prelude to the Future to Assess Climate Effects on Native Trout across the United States

Dates

Start Date
2014-07-23
End Date
2015-07-23
Release Date
2014

Summary

Salmonids (a family of fish that includes salmon, trout, and char) are a keystone species for both aquatic and terrestrial ecosystems, and can be an early warning indicator of ecosystem health. Salmonids also have strong societal values and contribute enormously to regional economies and Native American cultures. Today, many native salmonid populations are small, highly fragmented, and isolated from genetic exchange, thereby increasing their vulnerability to disturbances due to their limited ability to adapt through migration. Rising global air temperatures are altering the characteristics of aquatic ecosystems worldwide, including freshwater in the United States. Understanding the vulnerability of aquatic species and habitats to [...]

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Copyright_JonathanArmstrong.pdf
“Photo release Jonathan Armstrong”
122.63 KB application/pdf
NCCW-2014-7_BullTrout_MT_JonathanArmstrong1.jpg
“Bull trout, MT - Credit: Jonathan Armstrong”
thumbnail 341.7 KB image/jpeg
NCCW-2014-7_BullTrout_MT_JonathanArmstrong2.jpg
“Bull trout, MT - Credit: Jonathan Armstrong”
thumbnail 227.6 KB image/jpeg
NCCW-2014-7_NativeWestslope_CutthroatTrout_MT_JonathanArmstrong1.jpg
“Native westslope cutthroat trout, MT - Credit: Jonathan Armstrong”
thumbnail 658.81 KB image/jpeg
NCCW-2014-7_NativeWestslope_CutthroatTrout_MT_JonathanArmstrong2.jpg
“Native westslope cutthroat trout, MT - Credit: Jonathan Armstrong”
thumbnail 3.57 MB image/jpeg

Purpose

Future climate change is expected to dramatically alter the structure and function of freshwater ecosystems that support salmonid species. The response of salmonids to climate change will vary through space and time and manifest in both known and currently unknown ways. A potentially rich source of understanding of how salmonids interact with climate lies in a unified retrospective analysis of observed climate and population data in diverse habitats across the United States. Through research and management partners, tens of thousands of sampling events have occurred and continue to occur across the ranges of native salmonid species. We propose to capitalize on existing fish population and climate data from the recent past (1950-current) to: 1) test species-climate hypotheses, 2) identify mechanisms linking species to climate drivers, 3) validate current forecasting models, and 4) improve monitoring programs, vulnerability assessments, and risk assessment tools. An inherent benefit of this approach is the use of empirical climate and species population data, thus minimizing the uncertainty associated with extrapolations and climate projections.

Project Extension

projectStatusCompleted

Budget Extension

annualBudgets
year2014
totalFunds150000.0
totalFunds150000.0

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