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a blue pinyon jay sits on a branch of pinyon juniper

Despite regional variation, pinyon jay densities generally increase with local pinyon–juniper cover and heterogeneous ground cover

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Hydrologic variation influences stream fish assemblage dynamics through flow regime and drought

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Geographic variation in natal dispersal of Northern Spotted Owls over 28 years

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Systematic variation in evapotranspiration trends and drivers across the Northeastern United States

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Temporal and spatial variation in pharmaceutical concentrations in an urban river system

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Temporal variation in survival and recovery rates of lesser scaup: A response

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Localization and seasonal variation of blue pigment (sandercyanin) in walleye (Sander vitreus)

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Incorporating temporal variation in seabird telemetry data: time variant kernel density models

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Variation in Lake Michigan alewife (Alosa pseudoharengus) thiaminase and fatty acids composition

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Genetic variation among subspecies of Least Tern (Sterna antillarum): Implications for conservation

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Time-specific variation in passerine nest survival: New insights for old questions

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Phenotypic variation and vulnerability to predation in juvenile bluegill sunfish (Lepomis macrochirus)

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Temporal and geographic variation in fish communities of lower Cook Inlet, Alaska

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Annual variation in foraging ecology of prothonotary warblers during the breeding season

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Sources of variation in survival and recovery rates of American black ducks

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Vector analysis of chemical variation in the lavas of Parícutin volcano, Mexico

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A study of alternative schemes for extrapolation of secular variation at observatories

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Temporal variation of alkaline earth element/chlorinity ratios in the sargasso sea

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Floodplain forest tree seedling response to variation in flood timing and duration

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Variation in carbon and nitrogen concentrations among peatland categories at the global scale

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Thermal conditions predict intraspecific variation in senescence rate in frogs and toads

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Microtopographic variation as a potential early indicator of ecosystem state change and vulnerability in salt marshes

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Conservation implications of spatiotemporal variation in the terrestrial ecology of Western spadefoots

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Temperature variation and host immunity regulate viral persistence in a salmonid host

faq
Image shows a satellite view of wildfire damage in Argentina

Why is there so much color variation among the Landsat browse images?

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Capturing spatiotemporal variation in wildfires for improving postwildfire debris-flow hazard assessments

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Temporal analysis of mtDNA variation reveals decreased genetic diversity in least terns

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Variation in detection among passive infrared triggered-cameras used in wildlife research

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The distribution of nuclear genetic variation and historical demography of sea otters

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Geographic variation in survival and migratory tendency among North American Common Mergansers

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