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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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anadrofish: Anadromous fish population responses to dams anadrofish: Anadromous fish population responses to dams
Diadromous fishes world-wide experienced precipitous declines during the 19th and 20th centuries due to a combination of overfishing, pollution, and freshwater habitat loss through construction of dams (Limburg & Waldman, 2009). Following wide-spread fishing closures and large-scale remediation of many historical pollution sources, dams in coastal rivers remain as the largest tractable...
Authors
Daniel S. Stich, Joshua D. Hardesty, Nicholas T. Jordan, Samuel G. Roy, Timothy F. Sheehan, Shawn D. Snyder, Joseph D. Zydlewski
Mammalian scent lures fail to increase detections of invasive Burmese pythons (Python bivittatus) Mammalian scent lures fail to increase detections of invasive Burmese pythons (Python bivittatus)
Burmese pythons (Python bivittatus) are large constricting snakes native to Southeast Asia that have invaded the Greater Everglades Ecosystem in South Florida, USA. Pythons have caused precipitous declines in native mammals and are exceedingly difficult to detect using traditional methods such as scout snakes, detection dogs, and visual surveys. Live mammal lures have previously been...
Authors
Storm Miller, Michael Kirkland, Kristen Hart, Robert A. McCleery
Identifying novel Sea Lamprey (Petromyzon marinus) spawning areas in a large unimpounded river system Identifying novel Sea Lamprey (Petromyzon marinus) spawning areas in a large unimpounded river system
Introduction: Despite the success of the Sea Lamprey Control Program (SLCP) in reducing Sea Lamprey (Petromyzon marinus) abundance throughout the Laurentian Great Lakes, control remains a significant challenge in the Saint Clair-Detroit River System (SCDRS) due to the system's size, flow dynamics, and amount of potentially suitable spawning habitat. Methods: We used acoustic telemetry to...
Authors
Michael R. Lowe, Aaron K. Jubar, Jessica M. Barber, Darryl W. Hondorp, Christopher M. Holbrook
Temporal associations between ambrosia beetles and ʻōhiʻa (Metrosideros polymorpha) artificially inoculated with Ceratocystis lukuohia Temporal associations between ambrosia beetles and ʻōhiʻa (Metrosideros polymorpha) artificially inoculated with Ceratocystis lukuohia
Wood boring ambrosia beetles play a central role in the spread of Ceratocystis wilt of ‘ōhi‘a, a fungal disease caused by Ceratocystis lukuohia that kills the bioculturally important ‘ōhiʻa (Metrosideros polymorpha) tree. Beetles contribute to the spread of the disease by extruding fungus-infected wood particles (frass). Disease mitigation can benefit from knowledge of ambrosia beetle...
Authors
Robert W. Peck, Dan Mikros, Ellen J. Dunkle, Kelly Jaenecke, Kylle Roy
Species nativeness as a cultural paradigm in conservation Species nativeness as a cultural paradigm in conservation
Conservation entails cultural practices shaped by our worldviews, values, beliefs, and priorities for our interactions with nature. These inform how we categorize which species we want to occur in which landscapes. In Western conservation organizations, conceptualizations of species ‘belonging’ typically align with a dichotomy of native versus introduced species. This is a cultural...
Authors
Lily M. van Eeden, Jeff Vance Martin, Jonathan J. Fisk, Lisa Lehnen, Erle C. Ellis, Michael C. Gavin, Adam Landon, Lincoln R. Larson, Kirsten Leong, Wayne Linklater, Christopher A. Williams, Richard Eugene Waggaman Berl
Salting behaviors influence urban stream conductivity in Boston, Massachusetts (USA) Salting behaviors influence urban stream conductivity in Boston, Massachusetts (USA)
Freshwater salinization is a major concern in temperate climates where road salt is used as a deicer to manage snow and ice on roadways. In urban and suburban areas, wastewater, weathering of infrastructure, and salting on parking lots and sidewalks can also contribute to salt contamination, but little is known about how well these sources explain variation in stream conductivity and...
Authors
Allison H. Roy, Annika Quick, Rebecca L. Hale, Kristina G. Hopkins, Jack S. Soucie
Landsliding follows signatures of wildfire history and vegetative regrowth in a steep coastal shrubland Landsliding follows signatures of wildfire history and vegetative regrowth in a steep coastal shrubland
Five years after the deadly and destructive 9 January 2018 Montecito debris flows (Santa Barbara County, California, USA), an atmospheric river storm on 9 January 2023 triggered widespread landsliding that affected many of the same drainages in the Santa Ynez Mountains. Using high-resolution aerial imagery, we identified >10,000 landslides over an ∼160 km2 area. Most of the landslides...
Authors
Matthew A. Thomas, Donald N. Lindsay, Jason W. Kean, Andrew Paul Graber, Rebecca K. Rossi, Jaime Kostelnik, Francis K. Rengers, Jonathan Y. Schwartz, Brian J. Swanson, Nina S. Oakley, Paul W. Richardson, Alexander E. Morelan, Andrew C. Ritchie, Jonathan A. Warrick, Lindsey L. Rotche, Brian D. Penserini, Stephen L. Slaughter
Population genomics of Aedes albopictus across remote Pacific islands for genetic biocontrol considerations Population genomics of Aedes albopictus across remote Pacific islands for genetic biocontrol considerations
Remote Pacific islands (RPI) are characterized by ecological isolation, diverse endemic species, and vulnerability to invasive organisms due to globalization-driven connectivity. Among these species, Aedes albopictus, a highly invasive vector of flaviviruses, has spread extensively across the RPI via human-mediated dispersal, posing significant health and economic burdens. While the...
Authors
Sangwoo Seok, Adam E. Vorsino, Travis C. Collier, Limb Hapairai, Christopher M. Jacobsen, Jeomhee M. Hasty, Ana L. Romero-Weaver, Eva A. Buckner, Dennis A. LaPointe, Mark Leong, Leo Braack, Christine A. Tabuloc, Joanna C. Chiu, Robyn Raban, Omar S. Akbari, Yoosook Lee
Interacting sea-level rise, sea-ice loss, storm flooding, erosion, and permafrost thaw threaten ecosystems, wildlife, and communities on the Yukon-Kuskokwim Delta Interacting sea-level rise, sea-ice loss, storm flooding, erosion, and permafrost thaw threaten ecosystems, wildlife, and communities on the Yukon-Kuskokwim Delta
The Yukon-Kuskokwim Delta has the largest intertidal wetland in North America, is a globally critical breeding area for waterbirds, and is home to the largest regional indigenous population in the Arctic. Here, coastal tundra ecosystems, wildlife, and indigenous communities are highly vulnerable to sea-ice loss in the Bering Sea, sea-level rise, storm flooding, erosion, and collapsing...
Authors
M. Torre Jorgenson, James S. Sedinger, Craig Ely, Ann Fienup-Riordan, David E. Atkinson, James Ayuluk, Dana Brown, Gerald V. Frost, Benjamin M. Jones, Janet C. Jorgenson, Frank Keim, Rachel A. Loehman, Matthew J. Macander, Alice Rearden
Remote sensing of chlorophyll a and temperature to support algal bloom monitoring in Blue Mesa Reservoir, Colorado Remote sensing of chlorophyll a and temperature to support algal bloom monitoring in Blue Mesa Reservoir, Colorado
We present methods to reconstruct historical chlorophyll a and surface water temperatures from satellite-based remote sensing products for Blue Mesa Reservoir, Colorado, to support algal bloom monitoring. A machine learning model was trained to construct chlorophyll a concentrations from Sentinel-2 satellite imagery and in situ measurements of chlorophyll a concentrations (out of bag...
Authors
Tyler King, Robert Allen Bean, Katherine Walton-Day, M. Alisa Mast, Evan J. Gohring, Rachel G. Gidley, Natalie K. Day, Nicole D. Gibney
Refining the earthquake history of south-central Alaska through lake records Refining the earthquake history of south-central Alaska through lake records
The Alaska–Aleutian subduction zone (AASZ) is one of the world's most seismically active plate boundaries and the source of the 1964 Mw 9.2 Great Alaska earthquake–the second largest instrumentally recorded earthquake in the world. Understanding the nature and frequency of such earthquakes is necessary for seismic and tsunami hazard assessment, but instrumental and historical records...
Authors
Nore Praet, Maarten Van Daele, Katleen Wils, Peter J. Haeussler, Robert C. Witter, Nicholas P. McKay, Britta J.L. Jensen, Jasper Moernaut, Marc De Batist
Lake water storage and level Lake water storage and level
No abstract available.
Authors
Merritt Elizabeth Harlan, Michael Frederick Meyer, Benjamin M. Kraemer