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New Study: Distribution of the Foothill Yellow-Legged Frog in Oregon

New Study: Distribution of the Foothill Yellow-Legged Frog in Oregon

USGS researchers are beginning a new technical assistance study to help identify the current distribution of Foothill Yellow-Legged Frogs in Oregon.

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Researchers Compare Mercury in Songbird Feathers, Nails

Researchers Compare Mercury in Songbird Feathers, Nails

Although feathers are commonly used to monitor mercury in birds, their reliability has not been assessed for many avian species, including most...

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Conservation Research Across Scales in a National Program

Conservation Research Across Scales in a National Program

In 2000, the USGS Amphibian Research and Monitoring Initiative - or ARMI - was established, under the direction of the President and Congress, in...

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Mercury Exposure in Aquatic Invertebrates and Songbirds in the Greater Willamette River Basin

Mercury Exposure in Aquatic Invertebrates and Songbirds in the Greater Willamette River Basin

The Willamette River basin in western Oregon is a system with legacy mercury contamination from both mining and reservoirs

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An Integrated Framework for Ecological Drought Across Riverscapes of North America

An Integrated Framework for Ecological Drought Across Riverscapes of North America

Climate change is increasing extreme droughts events, posing a threat to freshwater ecosystems, particularly with human demands for diminishing water...

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How Spotted and Barred Owls Share the Forest

How Spotted and Barred Owls Share the Forest

Over the past century barred owls have been expanding their range westward, encroaching into the old-forest habitat of their sister species, the...

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Effects of Red-cockaded Woodpecker Bottleneck and Current Management on Genetic Diversity

Effects of Red-cockaded Woodpecker Bottleneck and Current Management on Genetic Diversity

The red-cockaded woodpecker is a federally listed species that declined in the southeastern United States from approximately 1.6 million cooperative...

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New Riverscape Model of Upstream Fish Migration

New Riverscape Model of Upstream Fish Migration

Survival and reproductive success of salmon and other diadromous fish depends on a return from the sea and upstream migration tens to thousands of...

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When Are Eagles Likely to Collide with Aircraft?

When Are Eagles Likely to Collide with Aircraft?

Since the ban of DDT, bald eagle populations have rebounded to near-historic levels and aircraft strikes have increased since 1998. Wildlife-aircraft...

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Disentangling Invasive Species and Habitat Effects in a Long-term Amphibian Study

Disentangling Invasive Species and Habitat Effects in a Long-term Amphibian Study

In the Willamette Valley, Oregon, the invasive American bullfrog and a variety of non-native sport fish are implicated in declines of native...

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A Users’ Guide for modeling Sockeye Salmon at Washington’s Lake Ozette

A Users’ Guide for modeling Sockeye Salmon at Washington’s Lake Ozette

The sockeye salmon population of the Lake Ozette watershed in northwestern Washington has been federally listed as threatened since 1999. Although the...

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FRESC Ecologist Awarded Meritorious Service Award

FRESC Ecologist Awarded Meritorious Service Award

Justin Welty, the project coordinator for the Land Treatment Exploration Tool, received the Meritorious Service Award of the Department of the...

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