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Invasive alien species (IAS) are a rising threat to biodiversity, national security, and regional economies, with impacts in the hundreds of billions of U.S. dollars annually. Proactive or predictive approaches guided by scientific knowledge are essential to keeping pace with growing impacts of invasions under climate change. Although the rapid development of diverse technologies and approaches has produced tools with the potential to greatly accelerate invasion research and management, innovation has far outpaced implementation and coordination. Technological and methodological syntheses are urgently needed to close the growing implementation gap and facilitate interdisciplinary collaboration and synergy among...
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Abstract (from http://onlinelibrary.wiley.com/doi/10.1111/gcb.13681/full): Hybridization between invasive and native species, a significant threat to worldwide biodiversity, is predicted to increase due to climate-induced expansions of invasive species. Long-term research and monitoring are crucial for understanding the ecological and evolutionary processes that modulate the effects of invasive species. Using a large, multidecade genetics dataset (N = 582 sites, 12,878 individuals) with high-resolution climate predictions and extensive stocking records, we evaluate the spatiotemporal dynamics of hybridization between native cutthroat trout and invasive rainbow trout, the world's most widely introduced invasive fish,...
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Contains two layers: 1. Bull Trout Vulnerability Assessment: This analysis was generated to show the relative vulnerability of bull trout across the Columbia basin. Input variables include the prportion of valley bottom (e.g. floodplains), the average max summer temperature (July 15th to Sept 15th), and winter flood frequency (the frequency of high flow events exceeding the 95th percentile from December through March) for a given watershed. The estimates for temperature and flow were taken from the mouth of the watershed. This analysis includes historic and future (2040s scenario). Stream temperature and flow data are avaliable at rap.ntsg.umt.edu. See Wu H, Kimball JS, Elsner MM, Mantua N, Adler RF, Stanford...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Columbia River Basin,
Fish,
Northwest CASC,
Rivers, Streams and Lakes,
Water, Coasts and Ice, All tags...
Wildlife and Plants,
bull trout,
valley bottoms,
vulnerability, Fewer tags
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In this study, scientists with the U.S. Geological Survey, Montana Fish, Wildlife & Parks, and the University of Montana studied how climate change affected world-renown trout fisheries across 3,100 miles rivers in Montana from 1983 to 2017. Extreme droughts reduced streamflows and increased water temperatures, causing stressful conditions for trout and numerous fishing site closures. This resulted in anglers moving to find fishing locations that were more favorable to trout during extreme drought conditions. By moving to fishing locations that were more favorable during drought, visitors kept trout fishing revenue in the state rather than choosing to travel elsewhere. This flexibility revealed surprising resiliency...
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Abstract (from Science Advances): Heterogeneity is a central feature of ecosystem resilience, but how this translates to socioeconomic resilience depends on people’s ability to track shifting resources in space and time. Here, we quantify how climatic extremes have influenced how people (fishers) track economically valuable ecosystem services (fishing opportunities) across a range of spatial scales in rivers of the northern Rocky Mountains, USA, over the past three decades. Fishers opportunistically shifted from drought-sensitive to drought-resistant rivers during periods of low streamflows and warm temperatures. This adaptive behavior stabilized fishing pressure and expenditures by a factor of 2.6 at the scale...
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