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Publication: Fragmentation and drying ratchet down Great Plains stream fish diversity Stream fragmentation alters the structure of aquatic communities on a global scale, generally through loss of native species. Among riverscapes in the Great Plains of North America, stream fragmentation and hydrologic alteration (flow regulation and dewatering) are implicated in the decline of native fish diversity. This study documents the spatio–temporal distribution of fish reproductive guilds in the fragmented Arkansas and Ninnescah rivers of south-central Kansas using retrospective analyses involving 63 years of fish community data. Pelagic-spawning fishes declined throughout the study area during 1950–2013, including Arkansas River shiner (Notropis girardi) last reported in 1983, plains minnow (Hybognathus... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CATFISHES/MINNOWS, Colorado, Colorado, FISH, Federal resource managers, All tags... GPLCC, GPLCC, Gene Flow, Gene Flow, Great Plains, Great Plains, Great Plains Landscape Conservation Cooperative, Habitat Modeling, Habitat Modeling, Kansas, Kansas, LCC Network Science Catalog, Landscape Genetics, Landscape Genetics, Nebraska, Nebraska, New Mexico, New Mexico, Oklahoma, Oklahoma, Plains Fish, Plains Fish, Prairie Rivers and Streams, Prairie Rivers and Streams, Publication, RIVERS/STREAM, Regional & county planners, State agencies, Stream Fragmentation, Stream Fragmentation, Texas, Texas, Wyoming, Wyoming, biota, completed, data.gov Great Plains LCC, environment, inlandWaters, Fewer tags Publication: Fragmentation and dewatering transform Great Plains stream fish communities Biodiversity in stream networks is threatened globally by interactions between habitat fragmentation and altered hydrologic regimes. In the Great Plains of North America, stream networks are fragmented by 19,000 anthropogenic barriers, and flow regimes are altered by surface water retention and groundwater extraction. We documented the distribution of anthropogenic barriers and dry stream segments in five basins covering the central Great Plains to assess effects of broad-scale environmental change on stream fish community structure and distribution of reproductive guilds. We used an information-theoretic approach to rank competing models in which fragmentation, discharge magnitude, and percentage of time streams had... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CATFISHES/MINNOWS, Colorado, Colorado, FISH, Federal resource managers, All tags... GPLCC, GPLCC, Gene Flow, Gene Flow, Great Plains, Great Plains, Great Plains Landscape Conservation Cooperative, Habitat Modeling, Habitat Modeling, Kansas, Kansas, LCC Network Science Catalog, Landscape Genetics, Landscape Genetics, Nebraska, Nebraska, New Mexico, New Mexico, Oklahoma, Oklahoma, Plains Fish, Plains Fish, Prairie Rivers and Streams, Prairie Rivers and Streams, Publication, RIVERS/STREAM, Regional & county planners, State agencies, Stream Fragmentation, Stream Fragmentation, Texas, Texas, Wyoming, Wyoming, biota, completed, data.gov Great Plains LCC, environment, inlandWaters, Fewer tags Publication: Water availability strongly impacts population genetic patterns of an imperiled Great Plains endemic fish Genetic, demographic, and environmental processes affect natural populations synergistically, and understanding their interplay is crucial for the conservation of biodiversity. Stream fishes in metapopulations are particularly sensitive to habitat fragmentation because persistence depends on dispersal and colonization of new habitat but dispersal is constrained to stream networks. Great Plains streams are increasingly fragmented by water diversion and climate change, threatening connectivity of fish populations in this ecosystem. We used seven microsatellite loci to describe population and landscape genetic patterns across 614 individuals from 12 remaining populations of Arkansas darter ( Etheostoma cragini) in... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Climate Change, Colorado, Colorado, Fisheries Management, GPLCC, All tags... Gene Flow, Great Plains, Great Plains, Great Plains Landscape Conservation Cooperative, LCC Network Science Catalog, Landscape Genetics, Plains Fish, Prairie Rivers and Streams, Publication, completed, data.gov Great Plains LCC, Fewer tags Separating the effects of habitat area, fragmentation, and matrix resistance on genetic differentation in complex landscapes . Synopsis: This paper aimed to quantify the relative importance of habitat area and configuration, as well as the contrast in resistance between habitat and non-habitat, on genetic differentiation patterns. Using spatially explicit, individual-based simulation modeling, researchers found that habitat configuration had stronger relationships with genetic differentiation than did habitat area. The pattern of habitat in a landscape will affect the distribution of the population and the degree of connectivity across it, resulting in differential patterns of gene flow. Researchers also evaluated the predictive ability of six widely used landscape metrics and found that patch cohesion and correlation length of habitat... Categories: Publication; Types: Citation; Tags: Landscape fragmentation, Natural cover amount, area, configuration, configuration, All tags... connectivity, fragmentation, gene flow, landscape genetics, landscape structure, limiting factors, model based, n/a, n/a, simulation thresholds, Fewer tags Publication: Comparative riverscape genetics reveals reservoirs of genetic diversity for conservation and restoration of Great Plains fishes We used comparative landscape genetics to examine the relative roles of historical events, intrinsic traits and landscape factors in determining the distribution of genetic diversity of river fishes across the North American Great Plains. Spatial patterns of diversity were overlaid on a patch-based graphical model and then compared within and among three species that co-occurred across five Great Plains watersheds. Species differing in reproductive strategy (benthic vs. pelagic-spawning) were hypothesized to have different patterns of genetic diversity, but the overriding factor shaping contemporary patterns of diversity was the signature of past climates and geological history. Allelic diversity was significantly... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CATFISHES/MINNOWS, Colorado, Colorado, FISH, Federal resource managers, All tags... GPLCC, GPLCC, Gene Flow, Gene Flow, Great Plains, Great Plains, Great Plains Landscape Conservation Cooperative, Habitat Modeling, Habitat Modeling, Kansas, Kansas, LCC Network Science Catalog, Landscape Genetics, Landscape Genetics, Nebraska, Nebraska, New Mexico, New Mexico, Oklahoma, Oklahoma, Plains Fish, Plains Fish, Prairie Rivers and Streams, Prairie Rivers and Streams, Publication, RIVERS/STREAM, Regional & county planners, State agencies, Stream Fragmentation, Stream Fragmentation, Texas, Texas, Wyoming, Wyoming, biota, completed, data.gov Great Plains LCC, environment, inlandWaters, Fewer tags Population structure of Columbia spotted frogs (Rana luteiventris) is strongly affected by the landscape Landscape features such as mountains, rivers, and ecological gradients may strongly affect patterns of dispersal and gene flow among populations and thereby shape population dynamics and evolutionary trajectories. The landscape may have a particularly strong effect on patterns of dispersal and gene flow in amphibians because amphibians are thought to have poor dispersal abilities. We examined genetic variation at six microsatellite loci in Columbia spotted frogs (Rana luteiventris) from 28 breeding ponds in western Montana and Idaho, USA, in order to investigate the effects of landscape structure on patterns of gene flow. We were particularly interested in addressing three questions: (i) do ridges act as barriers... Categories: Publication; Types: Citation, Journal Citation; Tags: Columbia spotted frog, Molecular Ecology, Rana luteiventris, dispersal, effective population size, All tags... gene flow, landscape genetics, microsatellite, Fewer tags Combining demographic and genetic factors to assess population vulnerability in stream species Abstract: Accelerating climate change and other cumulative stressors create an urgent need to understand the influence of environmental variation and landscape features on the connectivity and vulnerability of freshwater species. Here, we introduce a novel modeling framework for aquatic systems that integrates spatially-explicit, individual-based, demographic and genetic (demogenetic) assessments with environmental variables. To show its potential utility, we simulated a hypothetical network of 19 migratory riverine populations (e.g., salmonids) using a riverscape connectivity and demogenetic model (CDFISH). We assessed how stream resistance to movement -- a function of water temperature, fluvial distance, and... Categories: Publication; Types: Citation; Tags: Connectivity, Dispersal, Fish, Gene flow, Genetic diversity, All tags... Northwest CASC, Rivers, Streams and Lakes, Salvelinus confluentus, Vulnerability Assessments, Water, Coasts and Ice, Wildlife and Plants, genetic differentiation, landscape genetics, population viability, risk maps, stream barrier, stream networks, Fewer tags Landscape community genomics: understanding eco-evolutionary processes in complex environments Abstract (from http://www.sciencedirect.com/science/article/pii/S0169534715000075): Extrinsic factors influencing evolutionary processes are often categorically lumped into interactions that are environmentally (e.g., climate, landscape) or community-driven, with little consideration of the overlap or influence of one on the other. However, genomic variation is strongly influenced by complex and dynamic interactions between environmental and community effects. Failure to consider both effects on evolutionary dynamics simultaneously can lead to incomplete, spurious, or erroneous conclusions about the mechanisms driving genomic variation. We highlight the need for a landscape community genomics (LCG) framework to... Categories: Publication; Types: Citation; Tags: Fish, Northwest CASC, Rivers, Streams and Lakes, Water, Coasts and Ice, Wildlife and Plants, All tags... adaptation, co-evolution, community genetics, landscape genetics, landscape genomics, population connectivity, species interactions, Fewer tags