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Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Citation (3) Map Service (3) OGC WFS Layer (3) OGC WMS Layer (3) OGC WMS Service (3) Contacts Western Alaska Landscape Conservation Cooperative Peter Lisi Togiak National Wildlife Refuge Daniel Schindler Joel Reynolds More... Categories Data (3) Publication (3) Tag Types theme (3) ISO 19115 Topic Categories (3) ISO 19115 Topic Category (3) LCC End User Type (3) Harvest Set (3) Resource Type (3) Status (3) Tag Schemes http://gcmd.nasa.gov/learn/keywords.html (3) https://earthdata.nasa.gov/gcmd-forum (3) ISO 19115 Topic Categories (3) ISO 19115 Topic Category (3) https://www.sciencebase.gov/vocab/vocabulary/54760ef9e4b0f62cb5dc41a0 (3) View Results as: JSON ATOM CSV

Riding the crimson tide: mobile terrestrial consumers track phenological variation in spawning of an anadromous fish When resources are spatially and temporally variable, consumers can increasetheir foraging success by moving to track ephemeral feeding opportunitiesas these shift across the landscape; the best examples derive from herbivore–plant systems, where grazers migrate to capitalize on the seasonal waves ofvegetation growth. We evaluated whether analogous processes occur in watershedssupporting spawning sockeye salmon (Oncorhynchus nerka), askingwhether seasonal activities ofpredators and scavengers shift spatial distributionsto capitalize on asynchronous spawning among populations of salmon. Bothglaucous-winged gulls and coastal brown bears showed distinct shifts in theirspatial distributions over the course of the summer,... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Academics & scientific researchers, Federal resource managers, LAKES, LAKES, LCC Network Science Catalog, All tags... PRECIPITATION, PRECIPITATION, PRECIPITATION AMOUNT, PRECIPITATION AMOUNT, Publication, SALMONS/TROUTS, SALMONS/TROUTS, SNOW, SNOW, SNOW/ICE, SNOW/ICE, SNOW/ICE CHEMISTRY, SNOW/ICE CHEMISTRY, STREAM, STREAM, State agencies, Western Alaska Landscape Conservation Cooperative data.gov, biota, biota, climatologyMeteorologyAtmosphere, climatologyMeteorologyAtmosphere, completed, environment, environment, geoscientificInformation, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Watershed geomorphology and snowmelt control stream thermal sensitivity to air temperature. How local geomorphic and hydrologic features mediate the sensitivity of stream thermal regimesto variation in climatic conditions remains a critical uncertainty in understanding aquatic ecosystem responsesto climate change.We used stable isotopes of hydrogen and oxygen to estimate contributions of snow and rainfallto 80 boreal streams and show that differences in snow contribution are controlled by watershed topography.Time series analysis of streamthermal regimes revealed that streams in rain-dominated, low-elevation watershedswere 5–8 times more sensitive to variation in summer air temperature compared to streams draining steepertopography whose flows were dominated by snowmelt. This effect wasmore pronounced... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Academics & scientific researchers, Federal resource managers, LAKES, LAKES, LCC Network Science Catalog, All tags... PRECIPITATION, PRECIPITATION, PRECIPITATION AMOUNT, PRECIPITATION AMOUNT, Publication, SALMONS/TROUTS, SALMONS/TROUTS, SNOW, SNOW, SNOW/ICE, SNOW/ICE, SNOW/ICE CHEMISTRY, SNOW/ICE CHEMISTRY, STREAM, STREAM, State agencies, Western Alaska Landscape Conservation Cooperative data.gov, biota, biota, climatologyMeteorologyAtmosphere, climatologyMeteorologyAtmosphere, completed, environment, environment, geoscientificInformation, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Association between geomorphic attributes of watersheds, water temperature, and salmon spawn timing in Alaskan streams Intraspecific variation in the seasonal reproductive timing of Pacific salmon (Oncorhynchus sp.) has importantimplications for the resilience of salmon and for organisms in freshwater and terrestrial communities that dependon salmon resources. Stream temperature has well known associations with salmon spawn timing buthow stream and watershed geomorphology relates to the variation in salmon spawn timing is less understood.We used multivariate statistics applied to five environmental variables to compare conditions across36 watersheds in the Wood River basin in southwest Alaska. We found that the environmental conditionsin the first two axes of a principal components analysis (PCA) explained 76% of the variation in... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Academics & scientific researchers, Federal resource managers, LAKES, LAKES, LCC Network Science Catalog, All tags... PRECIPITATION, PRECIPITATION, PRECIPITATION AMOUNT, PRECIPITATION AMOUNT, Publication, SALMONS/TROUTS, SALMONS/TROUTS, SNOW, SNOW, SNOW/ICE, SNOW/ICE, SNOW/ICE CHEMISTRY, SNOW/ICE CHEMISTRY, STREAM, STREAM, State agencies, Western Alaska Landscape Conservation Cooperative data.gov, biota, biota, completed, environment, environment, geoscientificInformation, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags