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Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Ecological function maintained despite mesomammal declines Ecological function maintained despite mesomammal declines
Mid-sized mammals (i.e., mesomammals) fulfill important ecological roles, serving as essential scavengers, predators, pollinators, and seed dispersers in the ecosystems they inhabit. Consequently, declines in mesomammal populations have the potential to alter ecological processes and fundamentally change ecosystems. However, ecosystems characterized by high functional redundancy, where...
Authors
Rebecca K. McKee, Paul J. Taillie, Kristen Hart, Christopher L. Lopez, Adam Sanjar, Robert A. McCleery
Subduction zone geometry modulates the megathrust earthquake cycle: Magnitude, recurrence, and variability Subduction zone geometry modulates the megathrust earthquake cycle: Magnitude, recurrence, and variability
Megathrust geometric properties exhibit some of the strongest correlations with maximum earthquake magnitude in global surveys of large subduction zone earthquakes, but the mechanisms through which fault geometry influences subduction earthquake cycle dynamics remain unresolved. Here, we develop 39 models of sequences of earthquakes and aseismic slip (SEAS) on variably-dipping planar and...
Authors
James Burkhardt Biemiller, Alice-Agnes Gabriel, Dave May, Lydia M. Staisch
Leveraging local habitat suitability models to enhance restoration benefits for species of conservation concern Leveraging local habitat suitability models to enhance restoration benefits for species of conservation concern
Efforts to restore habitats and conserve wildlife species face many challenges that are exacerbated by limited funding and resources. Habitat restoration actions are often conducted across a range of habitat conditions, with limited information available to predict potential outcomes among local sites and identify those that may lead to the greatest returns on investment. Using the...
Authors
Jessica E. Shyvers, Nathan D. Van Schmidt, D. Joanne Saher, Julie A. Heinrichs, Michael S. O’Donnell, Cameron L. Aldridge
Trends in plant cover derived from vegetation plot data using ordinal zero-augmented beta regression Trends in plant cover derived from vegetation plot data using ordinal zero-augmented beta regression
Questions Plant cover values in vegetation plot data are bounded between 0 and 1, and cover is typically recorded in discrete classes with non-equal intervals. Consequently, cover data are skewed and heteroskedastic, which hampers the application of conventional regression methods. Recently developed ordinal beta regression models consider these statistical difficulties. Our primary...
Authors
Arco van Strien, Kathryn Irvine, Cas Retel
Seasonal patterns in riverine carbon form and export from a temperate forested watershed in Southeast Alaska Seasonal patterns in riverine carbon form and export from a temperate forested watershed in Southeast Alaska
Riverine export of carbon (C) is an important part of the global C cycle; however, most riverine C budgets focus on individual forms of C and fail to comprehensively measure both organic and inorganic C species in concert. To address this knowledge gap, we conducted high frequency sampling of multiple C forms, including dissolved organic C (DOC), inorganic carbon (as alkalinity)...
Authors
Claire Delbecq, Jason B. Fellman, J. Ryan Bellmore, Emily J. Whitney, Eran Hood, Kevin Fitzgerald, Jeffrey A. Falke
Antibody response of endangered riparian brush rabbits to vaccination against rabbit hemorrhagic disease virus 2 Antibody response of endangered riparian brush rabbits to vaccination against rabbit hemorrhagic disease virus 2
Rabbit hemorrhagic disease virus 2 (RHDV2; Caliciviridae, Lagovirus europaeus), the cause of a highly transmissible and fatal lagomorph disease, has spread rapidly through the western United States and Mexico, resulting in substantial mortality in domestic and wild rabbits. The disease was first detected in California in May 2020, prompting an interagency/zoo/academia/nonprofit team to...
Authors
Megan E. Moriarty, Jaime L. Rudd, Fumika Takahashi, Eric Hopson, Colleen Kinzley, Darren Minier, Alex Herman, Mary Lou Berninger, Fawzi Mohamed, Muzafar Makhdoomi, Leslie W. Woods, Hon S. Ip, Deana L. Clifford
Cold blood in warming waters: Effects of air temperature, precipitation, and groundwater on Gulf Sturgeon thermal habitats in a changing climate Cold blood in warming waters: Effects of air temperature, precipitation, and groundwater on Gulf Sturgeon thermal habitats in a changing climate
Objective In a changing climate, the effects of air temperature, precipitation, and groundwater on water temperature and thermal habitat suitability for Gulf Sturgeon Acipenser desotoi, listed as threatened under the U.S. Endangered Species Act, are not well understood. Hence, we incorporated these factors into thermal habitat models to forecast how Gulf Sturgeon may be affected by wide...
Authors
Andrew Kenneth Carlson, Bethany M. Gaffey
A decade of curtailment studies demonstrates a consistent and effective strategy to reduce bat fatalities at wind turbines in North America A decade of curtailment studies demonstrates a consistent and effective strategy to reduce bat fatalities at wind turbines in North America
There is a rapid, global push for wind energy installation. However, large numbers of bats are killed by turbines each year, raising concerns about the impacts of wind energy expansion on bat populations. Preventing turbine blades from spinning at low wind speeds, referred to as curtailment, is a method to reduce bat fatalities, but drawing consistent inference across studies has been...
Authors
Michael Whitby, M. Teague O’Mara, Cris D. Hein, Manuela Huso, Winifred F. Frick
Vulnerability of endemic insular mole skinks to sea-level rise Vulnerability of endemic insular mole skinks to sea-level rise
Although coastal islands are home to many endemic species, they are also at risk of inundation from storm surge and sea level rise. Three subspecies of mole skink (Plestiodon egregius egregius, P. e. insularis, and the Egmont Key Mole Skink known from a single occurrence) occur on a small number of islands off the Gulf Coast of Florida, USA. We used the most recent sea level rise...
Authors
Erin L. Koen, William Barichivich, Susan Walls
Feeding habits and ecological implications of the invasive Flathead Catfish in the Susquehanna River basin, Pennsylvania Feeding habits and ecological implications of the invasive Flathead Catfish in the Susquehanna River basin, Pennsylvania
Objective Flathead Catfish Pylodictis olivaris are a widespread aquatic invasive species within the United States and a recent invader in the Susquehanna River basin, Pennsylvania. Flathead Catfish are piscivores known to consume native and recreationally important fish species. In the mid-Atlantic United States, it is unknown how this invader is impacting food webs and which species may...
Authors
Sydney Stark, Megan K. Schall, Geoffrey D. Smith, Aaron Maloy, Jason A. Coombs, Tyler Wagner, Julian Avery
Pre-fire assessment of post-fire debris flow hazards in the Santa Fe Municipal Watershed Pre-fire assessment of post-fire debris flow hazards in the Santa Fe Municipal Watershed
Background Wildfires are increasing in size and severity due to climate change combined with overstocked forests. Fire increases the likelihood of debris flows, posing significant threats to life, property, and water supplies. Aims We conducted a debris-flow hazard assessment of the Santa Fe Municipal Watershed (SFMW) to answer two questions: (1) where are debris flows most likely to...
Authors
Manuel K. Lopez, Ellis Q. Margolis, Anne C. Tillery, S. Bassett, Alan Hook
Declining reservoir reliability and increasing reservoir vulnerability: Long-term observations reveal longer and more severe periods of low reservoir storage for major United States reservoirs Declining reservoir reliability and increasing reservoir vulnerability: Long-term observations reveal longer and more severe periods of low reservoir storage for major United States reservoirs
Hydrological drought is a pervasive and reoccurring challenge in managing water resources. Reservoirs are critical for lessening the impacts of drought on water available for many uses. We use a novel and generalized approach to identify periods of unusually low reservoir storage—via comparisons to operational rule curves and historical patterns—to investigate how droughts affect storage...
Authors
Caelan Simeone, John C. Hammond, Stacey A. Archfield, Dan Broman, Laura Condon, Hisham Eldardiry, Carolyn G. Olson, Jen Steyaert