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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
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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Rice cultivation supports growth and survival of a threatened semi-aquatic reptile Rice cultivation supports growth and survival of a threatened semi-aquatic reptile
Integration of agroecosystems and other working landscapes with protected lands and waters is critical to the conservation of Earth's biodiversity. Rice agroecosystems support many species by providing aquatic habitat where natural wetlands have been altered or drained. In regions with long dry seasons, rice fields and associated irrigation canals provide essential habitat for wetland...
Authors
Jonathan P. Rose, Allison M. Nguyen, Anna Jordan, Daniel Antonio Macias, Elliot James Schoenig, Giancarlo Ray Napolitano, Richard Kim, Julia S.M. Ersan, Alexandria M. Fulton, Brian Halstead
Seasonal movements of nonnative White Catfish in the Penobscot River estuary Seasonal movements of nonnative White Catfish in the Penobscot River estuary
Objective White Catfish Ameiurus catus has been introduced to coastal watersheds across the United States. In the Penobscot River, Maine, this species has become increasingly common in upstream habitats that have been made accessible by recent dam removals. We characterized the movements of White Catfish to understand the temporal variation in their movement patterns and contextualize...
Authors
Andrea N. Casey, Matthew A. Mensinger, Joseph D. Zydlewski
Predicting sediment bulk density for San Francisco Estuary Predicting sediment bulk density for San Francisco Estuary
Sediment bulk density (ρ-dry) and particle size are two important parameters for predicting sediment bed erosion. ρ-dry, however, is difficult to measure accurately. The units of ρdry have not been consistently reported in the literature, leading to confusion, particularly in the calculation of sediment budgets that typically require integrating mass-based and volumetric components...
Authors
Samantha C. McGill, Jessica R. Lacy
Causal analysis of fire regime drivers in California Causal analysis of fire regime drivers in California
Background Understanding the relative contribution of climate and human factors to wildfires is critical for managing risk across California’s diverse ecosystems, in the United States (US).Aims We propose a model that distinguishes between proximate and ultimate drivers of fire regimes and apply it to a century of fire and climate data to assess regional variation in causal mechanisms...
Authors
Jon Keeley, Alexandra D. Syphard
Downstream persistence of cyanobacteria in New Jersey's Raritan River basin Downstream persistence of cyanobacteria in New Jersey's Raritan River basin
Few studies have examined cyanobacteria persistence starting from lacustrine cyanobacteria harmful algal blooms (HABs) downstream. Multiple lakes and reservoirs within New Jersey's Raritan Basin Water Supply Complex (RBWSC) feature recurrent HABs and discharge water into the Raritan River. As the RBWSC provides drinking water to 1.5 million people, these HABs create drinking water...
Authors
Kyle Clonan, Meiyin Wu, Heather A. Heckathorn, Heather Desko, Eric Ernst, Pamela A. Reilly, Robert L. Schuster, Robert Newby, Annie Hurley, Alessandra Rossi
Biologging to identify nesting and non-nesting emergences for four species of imperiled sea turtles Biologging to identify nesting and non-nesting emergences for four species of imperiled sea turtles
Quantifying sea turtle nesting behavior is essential for recovery planning and evaluating management actions. Traditional monitoring approaches, based on nest counts from beach surveys, can misclassify non-nesting emergences, obscure true fecundity, and underestimate clutch frequency, metrics that directly influence population models and regulatory decisions. Here, we demonstrate that...
Authors
Kristen Hart, Connor F. White, Donna J. Shaver, Margaret Lamont, Michael Cherkiss, Andrew G. Crowder, Nicholas M. Whitney
Growth of a passive lava lake during the 2020–2021 eruption of Kīlauea volcano, Hawaii Growth of a passive lava lake during the 2020–2021 eruption of Kīlauea volcano, Hawaii
We investigate the growth of a passive lava lake in Halemaʻumaʻu crater during the December 2020 to May 2021 eruption of Kīlauea volcano, Hawaii. Fed by vents above their surfaces, the formation of passive lava lakes in topographic lows is an important process in the growth of basaltic volcanoes. We captured visible and thermal images during 17 helicopter overflights and applied...
Authors
Brett B. Carr, Matthew R. Patrick, Hannah R. Dietterich, Michael H. Zoeller, Carolyn Parcheta, Drew T. Downs, Patricia A. Nadeau, Christoper Hamilton
Environmental tradeoffs of urban stream restoration in Fairfax County, Virginia Environmental tradeoffs of urban stream restoration in Fairfax County, Virginia
Regulatory mandates to improve water quality and stream health have driven substantial investment in stream restoration. Most projects aim to improve channel-floodplain connectivity, reduce sediment erosion, and enhance habitat for aquatic organisms, yet few include adequate pre- and post-restoration monitoring to assess outcomes. Since 2007, Fairfax County, Virginia, and the U.S...
Authors
Aaron J. Porter, Christopher M. Ruck, Spencer John Tassone
Early season tropical cyclones affect birds breeding on a barrier island Early season tropical cyclones affect birds breeding on a barrier island
Animal populations often experience acute natural disturbances, most of which are connected to short—term weather events. Occurrences of early—season tropical cyclones during the peak of the avian breeding season are likely to increase with climate change, which can substantially impact populations of coastal breeding birds at multiple scales. To understand the acute impacts of severe...
Authors
Theodore J. Zenzal, Amanda Nicole Anderson, Brock Geary, Jessica Schulz, Robert C. Dobbs, Wylie C. Barrow, Hardin Waddle
Seed coating treatments alter emergence windows of native Intermountain West U.S. grasses under different regimes of water availability Seed coating treatments alter emergence windows of native Intermountain West U.S. grasses under different regimes of water availability
Introduction Seed-based restoration is widely implemented to recover degraded lands but often fails. Seed enhancement technologies may improve outcomes by shifting emergence to target favorable climate windows and serving as a bet-hedging strategy against increasingly variable precipitation patterns.Objectives To test the potential benefit of these technologies, we applied seed coatings...
Authors
Laura Cecilia Shriver, Sarah A. Costanzo, Matthew D. Madsen, Seth M. Munson
Land use and soil characteristics are associated with increased risk of treponeme-associated hoof disease in elk Land use and soil characteristics are associated with increased risk of treponeme-associated hoof disease in elk
Environments can shape the occurrence and extent of disease outbreaks in wildlife. We studied the effects of environmental features on the occurrence of treponeme-associated hoof disease (TAHD), an emerging infectious disease of free-ranging elk (Cervus canadensis), in southwestern Washington, USA. During the 2016–2022 harvest seasons, successful elk hunters returned mandatory harvest...
Authors
Steven N. Winter, Glen A. Sargeant, Margaret A. Wild, Erin Clancey, Kathryn P. Huyvaert, Kyle Garrison, Pilar Fernandez
A transdisciplinary approach to growing an applied science of cultural evolution for a sustainable future A transdisciplinary approach to growing an applied science of cultural evolution for a sustainable future
Addressing sustainability challenges requires an integrative approach that bridges scientific research with practical application. The field of cultural evolution (CE) offers a perspective that may guide transitions and cultural transformations for a sustainable future. However, there have been few efforts to apply this field to sustainability challenges. This study explores how CE can...
Authors
Jeremy S. Brooks, Rebecca Koomen, Peter Søgaard-Jørgensen, Richard Eugene Waggaman Berl, Wendy Chavez-Paez, Dustin Eirdosh, Moh Abdul Hakim, Susan Hanisch, Christine Lindell, James Liu, Minh Hiếu Nguyễn, Anne Pisor, Douglas Rogers, Rainer Romero-Canyas, Erik Thulin, Tim Waring