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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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Visioning ecologically diverse and harmonious futures of Korea in Good Anthropocene Visioning ecologically diverse and harmonious futures of Korea in Good Anthropocene

1.The Korean Demilitarized Zone (DMZ), a buffer between North and South Korea, holds profound historical, cultural and ecological significance, as well as exceptional potential for conservation and transformation. This study explores ecologically diverse and peaceful futures for the Korean Peninsula by envisioning the DMZ as a landscape for harmonious human–nature co-existence. 2.Using...
Authors
HyeJin Kim, Garry Peterson, Hyeonjeong Kim, Hanvit Lee, Miyoung Yeo, Youngcheol Cho, Paula A. Harrison, Gwanwoo Jin, Bohun Kang, Junsoo Kim, Sanha Kim, Kyung Ah Koo, Brian W. Miller, Laura M. Pereira, SoEun Ahn, Lisa Yeonjung Gwon, Jaegyun Im, Seul-gi Lee, Chunhwa Park, Jiyeon Park, Soojin Park, Yea-Yl Yoon, Yukyong Jung Yun Choe, Mijung Im, Jae Chun Choe

Widespread occurrence of Magnéli phases in wildland-urban interface fire ashes Widespread occurrence of Magnéli phases in wildland-urban interface fire ashes

The increasing activity of wildland–urban interface (WUI) fires has raised concerns regarding the potential environmental and human health impacts of residual ash remaining after burning. In this study, we investigated the concentration and speciation of titanium in WUI fire ash. Total titanium concentrations in WUI fire ash ranged from 0.53 to 80 g kg–1. Synchrotron-based macro- and...
Authors
Mohammed Baalousha, Morgane Desmau, Roberto A. Colina-Ruiz, Antonio Lanzirotti, Sheryl A. Singerling, Michelle A. Stern, Charles N. Alpers

Erosion and transport of sediments in watersheds of southwest Puerto Rico determined from strontium isotopes and mixing models Erosion and transport of sediments in watersheds of southwest Puerto Rico determined from strontium isotopes and mixing models

Sediment outflow from streams to coastal regions can adversely affect water quality and the health of ecosystems including Puerto Rico's southwestern carbonate platform with shallow marine communities. Knowledge of sediment provenance and erosional areas would aid effective restoration to reduce excessive sedimentation. Strontium (Sr) isotopic ratios (87Sr/86Sr) can be used to...
Authors
Aaron O. Reyes, Renee K. Takesue, Curt D. Storlazzi

The state of the giant sequoias: Losses, risks, and opportunities The state of the giant sequoias: Losses, risks, and opportunities

Background Giant sequoias, an iconic tree found only in a narrow band along the western slope of the Sierra Nevada of California, are facing unprecedented threats. Despite being adapted to fire and resistant to both drought and insect attack, the species has exhibited signs of vulnerability to these stressors in recent years, with the most substantial impacts coming from wildfire...
Authors
Kristen L. Shive, Brianna Baker, David Nicolas Bertil Soderberg, Linnea J. Hardlund, Marc D. Meyer, P. Bryant Nagelson, Sarah M. Bisbing, Adrian Das, Nathan L. Stephenson

DNA retention in sea lamprey digestive tracts: Insights from controlled feeding experiments DNA retention in sea lamprey digestive tracts: Insights from controlled feeding experiments

The sea lamprey (Petromyzon marinus), a non-native species in the Laurentian Great Lakes, has significantly impacted native fish communities and commercial fisheries, requiring population suppression efforts. While traditional control methods such as lampricides and barriers have reduced sea lamprey population abundance, questions remain regarding sea lamprey dietary composition given...
Authors
Conor O'Kane, Nicholas S. Johnson, Kim T. Scribner, Jeannette Kanefsky, Weiming Li, Tyler Bruning, John D. Robinson

Seasonal environmental conditions and river morphology shape summer phytoplankton communities Seasonal environmental conditions and river morphology shape summer phytoplankton communities

1. Phytoplankton form the base of large river food webs but there are limited studies on the nature and drivers of communities over longer time scales. Further, climate change is projected to favor taxa associated with harmful algal blooms, but our knowledge of the timing, locations, and drivers of cyanobacteria in rivers lags that of lakes and marine environments. 2. We used a summer
Authors
Kathi Jo Jankowski, James H. Larson, John T. Manier

Relative activity of three bat species Impacted by white-nose syndrome on the Chesapeake and Ohio Canal National Historical Park Relative activity of three bat species Impacted by white-nose syndrome on the Chesapeake and Ohio Canal National Historical Park

White-nose syndrome, a disease caused by the fungal-pathogen Pseudogymnoascus destructans, has caused drastic reductions in populations of several North American hibernating species of bats including Myotis lucifugus (Little Brown Bat), Myotis septentrionalis (Northern Long-eared Bat), and Perimyotis subflavus (Tricolored Bat). Recent data indicate that populations of Little Brown Bats...
Authors
Megan L. Moran, Amber S. Litterer, Jesse L. De La Cruz, Sabrina M. Deeley, W. Mark Ford

Advances in volcano monitoring driven by the first decade of Sentinel-1 observations Advances in volcano monitoring driven by the first decade of Sentinel-1 observations

Sentinel-1 has transformed how satellite radar data (SAR and InSAR) are used in volcanology. The systematic, long-term archive and open-access policy means that volcano observatories and research organisations have invested in integrating Sentinel-1 datasets into their monitoring systems. We identify 233 high priority volcanoes and estimate that Sentinel-1 data has been used in peer...
Authors
Juliet Biggs, Nantheera Anantrasirichai, Kyle R. Anderson, Valerie Cayol, Edna W. Dualeh, Quentin Dumont, Susanna K. Ebmeier, Jean Luc Froger, Matthew Gaddes, Federico Galleto, Pablo J. Gonzales, Ian Hamling, Andrew Hooper, Milan Lazecky, Camila Novoa Lizama, Matthew E. Pritchard

Seasonal and annual survival of acoustically tagged juvenile Gulf sturgeon in the Apalachicola River, Florida, USA Seasonal and annual survival of acoustically tagged juvenile Gulf sturgeon in the Apalachicola River, Florida, USA

Gulf sturgeon Acipenser desotoi are anadromous fish that have undergone major population declines throughout their range. Habitat alteration and previous overharvest in commercial fisheries led to the species being listed as ‘threatened’ under the US Endangered Species Act in 1991. An accurate understanding of population dynamics, including survival, is necessary for monitoring...
Authors
Russell T. Wilson, Adam J. Kaeser, Stephen W. Parker, Brian J. Irwin, Martin J. Hamel, Adam G. Fox

Potential causes of shedding aggregations in prairie rattlesnakes Potential causes of shedding aggregations in prairie rattlesnakes

Aggregation is common across taxa and typically confers clear benefits to group members (e.g., allo-parenting, group defense, thermoregulation, access to resources). But aggregation can also be costly. The mechanisms that underpin aggregation—and the cues that elicit it—inform our understanding of how animals resolve tradeoffs among selection pressures. Snakes sometimes form conspicuous
Authors
Emily Martin, Courtney J. Conway

Valuing socio-economic and ecological attributes of forested watershed restoration to reduce wildfire risk in the southwestern U.S. Valuing socio-economic and ecological attributes of forested watershed restoration to reduce wildfire risk in the southwestern U.S.

Forest restoration in a watershed can provide numerous ecological improvements and social benefits, including reducing the risk of extreme wildfire. Understanding the values of the accrued benefits can be used to evaluate the use of funds to support restoration. The Rio Grande watershed is a vast watershed covering approximately 335,000 mile2 (867,646 km2). The Rio Grande watershed...
Authors
Mohammad Mashiur Rahman, James R. Meldrum, Julie M. Mueller, Christopher Huber

Seasons and seasonality in lakes: Synthesis amid global change Seasons and seasonality in lakes: Synthesis amid global change

Seasonality in environmental conditions plays a fundamental role in shaping lake ecosystems. However, patterns of seasonality vary worldwide, and these patterns are shifting over time amid global change. Thus, it is increasingly important to evaluate how seasons and seasonality are represented in lake ecosystem research. Here, we used a literature review and global data analysis to...
Authors
Abigail S. Lewis, David C. Richardson, Dexter W. Howard, Cayelan C. Carey, Benjamin M. Kraemer, Yael Amitai, Sheel Bansal, Elvira Eyto, Hans-Peter Grossart, Kathryn K. Hoffman, Rachel A. Hovel, Lesley B. Knoll, Isabella Oleksy, Arianto Santoso, Martin Schmid, Robert Schwefel, Dietmar Straile, Xinyu Sun, Gesa A. Weyhenmeyer, Whitney M. Woelmer, Sabine Wollrab, Petr Znachor
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