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Reports

Browse more than 82,000 reports authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

Filter Total Items: 84733

Pacific island landbird monitoring report, Kalaupapa National Historical Park, 2021 Pacific island landbird monitoring report, Kalaupapa National Historical Park, 2021

In 2021, landbird surveys were conducted at Kalaupapa National Historical Park on the island of Molokaʻi to assess changes in species composition, distribution, and population densities since 2005. Point-transect distance sampling surveys were conducted on six transects at 50 landbird monitoring stations within an 1,834-hectare area. A total of nine landbird species were detected, with...
Authors
Seth Judge, Lauren K. Smith, Richard J. Camp

Great Lakes lake trout (Salvelinus namaycush) thiamine monitoring program annual report Great Lakes lake trout (Salvelinus namaycush) thiamine monitoring program annual report

Thiamine deficiency in lake trout (Salvelinus namaycush) eggs has been linked to early life-stage mortality in the Great Lakes from the 1960s through the 1990s, potentially affecting lake trout recruitment. In response, the U.S. Geological Survey’s Great Lakes Science Center (GLSC), Eastern Ecological Science Center (EESC), and Columbia Environmental Research Center (CERC), and the State
Authors
Jacques Rinchard, Brian F. Lantry, Brian O’Malley

Effects of climate change on midwestern ecosystems: Eastern North American temperate freshwater marsh, wet meadow and shrubland Effects of climate change on midwestern ecosystems: Eastern North American temperate freshwater marsh, wet meadow and shrubland

The Eastern North American Temperate Freshwater Marsh, Wet Meadow and Shrubland is a hydrologically dynamic ecosystem highly sensitive to shifts in water availability. Across the Midwest, climate change is expected to intensify two primary stressors, flooding and drought, resulting in increased hydrologic variability that may threaten the persistence of these wetlands. Increased spring
Authors
Hugh Ratcliffe, Katherine Charton, Taylor Siddons, Marta P. Lyons, Olivia E. LeDee

Beginner’s guide to understanding, accessing, and retrieving Coastwide Reference Monitoring System data Beginner’s guide to understanding, accessing, and retrieving Coastwide Reference Monitoring System data

No abstract available.
Authors
Lauren Angelle Leonpacher, Rachel Katherine Villani, Kari Cretini, Christina B. Hunnicutt, Susan Testroet-Bergeron, Dona Weifenbach, Cole B Ruckstuhl, Sarai Piazza

Effects of climate change on midwestern ecosystems: North American bog and fen Effects of climate change on midwestern ecosystems: North American bog and fen

The North American Bog and Fen ecosystem may be increasingly vulnerable to climate stressors, particularly water deficits and warming temperatures. These peat-forming wetlands, found at the southern extent of their range in the Midwest, depend on relatively stable hydrological and thermal conditions. Climate change may disrupt these conditions through projected declines in summer...
Authors
Hugh Ratcliffe, Katherine Charton, Taylor Siddons, Marta P. Lyons, Olivia E. LeDee

U.S. national park units as breeding bird habitat: A comparison of species prevalence and land cover across the midwestern and central United States U.S. national park units as breeding bird habitat: A comparison of species prevalence and land cover across the midwestern and central United States

The value of national parks as bird habitat depends not only on local conditions within the parks, but also on the landscape habitat matrices in which they are located. However, the influences of local and landscape habitat matrices on birds vary by species and have not been quantified. Similarly, the trends of land cover types through time have not been systematically quantified for...
Authors
Ryan C. Burner, Alan A Kirschbaum, Ted Gostomski, David G Peitz
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