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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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Assessing impacts of human stressors on stream fish habitats across the Mississippi River basin Assessing impacts of human stressors on stream fish habitats across the Mississippi River basin
Effective conservation of stream fishes and their habitats is complicated by the fact that human stressors alter the way in which natural factors such as stream size, catchment geology, and regional climate influence stream ecosystems. Consequently, efforts to assess the condition of stream fishes and their habitats must not only attempt to characterize the effects of human stressors but...
Authors
Jared Ross, Dana M. Infante, Arthur R. Cooper, Joanna B. Whittier, Wesley Daniel
A decision framework for the management of established biological invasions A decision framework for the management of established biological invasions
In some cases, managing an established invasive species may do more harm to an ecosystem than allowing the invader to persist. Given limited resources available to land managers and the realities of conservation triage, we recognized the need for systematic guidance for management decisions made at the “late end” of the invasion curve. We gathered an interdisciplinary group of experts...
Authors
C. D. Robichaud, R. C. Rooney, B. M. H. Larson, S. E. Wolfe, Z. Nyssa, Kurt P. Kowalski, H. Braun
Using recovered radio transmitters to estimate positioning error and a generalized Monte Carlo simulation to incorporate error into animal telemetry analysis Using recovered radio transmitters to estimate positioning error and a generalized Monte Carlo simulation to incorporate error into animal telemetry analysis
Background Mobile radio tracking is an important tool in fisheries research and management. Yet, the accuracy of location estimates can be highly variable across studies and within a given dataset. While some methods are available to deal with error, they generally assume a static value for error across all detections. We provide a novel method for making detection-specific error...
Authors
Kurt C. Heim, W.C. Ardren, Theodore Castro-Santos
Importance of subsurface water for hydrological response during storms in a post-wildfire bedrock landscape Importance of subsurface water for hydrological response during storms in a post-wildfire bedrock landscape
Wildfire alters the hydrologic cycle, with important implications for water supply and hazards including flooding and debris flows. In this study we use a combination of electrical resistivity and stable water isotope analyses to investigate the hydrologic response during storms in three catchments: one unburned and two burned during the 2020 Bobcat Fire in the San Gabriel Mountains...
Authors
Abra Atwood, Madeline Hille, Marin Clark, Francis K. Rengers, Dimitrios Ntarlagiannis, Kirk Townsend, A. Joshua West
Cryptic tolerant fish species and their potential effect on index of biotic integrity (IBI) scores Cryptic tolerant fish species and their potential effect on index of biotic integrity (IBI) scores
Indices such as the Index of Biotic Integrity (IBI) are often used by management agencies to estimate the abstract property of stream health. These indices are usually predicated on the belief that certain fish species are tolerant to environmental perturbation while others are sensitive. Species are usually designated as either tolerant or sensitive in these analyses based on inherent...
Authors
Bryson G. Hilburn, Mary Freeman, Katelyn M. Lawson, Steven J. Rider, Carol E. Johnston
Role of trace metal co-limitation in cyanobacterial blooms of Maumee Bay (Lake Erie) and Green Bay (Lake Michigan) Role of trace metal co-limitation in cyanobacterial blooms of Maumee Bay (Lake Erie) and Green Bay (Lake Michigan)
The open waters of large lakes can sometimes become so depleted in important metals that phytoplankton communities become either growth limited or limited in some metabolic function. Metals such as Fe, Ni, Mo, and Zn are used as co-factors for enzymes by phytoplankton in core metabolic functions, as well as metabolic pathways that allow phytoplankton to use less preferred forms of N and...
Authors
James H. Larson, Keith A. Loftin, Erin A. Stelzer, David M. Costello, Sean Bailey, Mary Anne Evans, Carrie E. Givens, Lisa R. Fogarty
Plant traits poorly predict winner and loser shrub species in a warming tundra biome Plant traits poorly predict winner and loser shrub species in a warming tundra biome
Climate change is leading to species redistributions. In the tundra biome, shrubs are generally expanding, but not all tundra shrub species will benefit from warming. Winner and loser species, and the characteristics that may determine success or failure, have not yet been fully identified. Here, we investigate whether past abundance changes, current range sizes and projected range...
Authors
Mariana Garcia Criado, Isla H. Myers-Smith, Anne Bjorkman, Signe Normand, Anne Blach-Overgaard, Haydn J. D. Thomas, Anu Eskelinen, Konsta Happonen, Juha Alatalo, Alba Anadon-Rosell, Isabelle Aubin, Mariska te Beest, Katlyn R. Betway-May, Daan Blok, Allan Buras, Bruno E. L. Cerabolini, Katherine S. Christie, J. Hans C. Cornelissen, Bruce C. Forbes, Esther R. Frei, Paul Grogan, Luise Hermanutz, Robert D. Hollister, James Hudson, Maitane Iturrate-Garcia, Elina Kaarlejarvi, Michael Kleyer, Laurent J. Lamarque, Jonas J. Lembrechts, Esther Levesque, Miska Luoto, Petr Macek, Jeremy May, Janet S. Prevey, Gabriela Schaepman-Strub, Serge N. Sheremetiev, Laura Siegwart Collier, Nadejda A. Soudzilovskaia, Andrew Trant, Susanna E. Venn, Anna-Maria Virkkala
Tourism-supported working lands sustain a growing jaguar population in the Colombian Llanos Tourism-supported working lands sustain a growing jaguar population in the Colombian Llanos
Understanding large carnivore demography on human-dominated lands is a priority to inform conservation strategies, yet few studies examine long-term trends. Jaguars (Panthera onca) are one such species whose population trends and survival rates remain unknown across working lands. We integrated nine years of camera trap data and tourist photos to estimate jaguar density, survival...
Authors
Matthew Hyde, Esteban Payan, Jorge Barragan, Diana Stasiukynas, William L. Kendall, Samantha Rincon, Jeronimo Rodriguez, Kevin R. Crooks, Stewart W. Breck, Valeria Boron
Open water dreissenid mussel control projects: Lessons learned from a retrospective analysis Open water dreissenid mussel control projects: Lessons learned from a retrospective analysis
Dreissenid mussels are one of the most problematic aquatic invasive species (AIS) in North America, causing substantial ecological and economic effects. To date, dreissenid mussel control efforts in open water have included physical, biological, and chemical methods. The feasibility of successful dreissenid mussel management or eradication in lakes is relatively undocumented in the...
Authors
Angelique D. Dahlberg, Diane L. Waller, David Hammond, Keegan Lund, Nicholas B. D. Phelps
Editorial: Micro-to nano-analytical challenges towards trace element characterization of ore minerals: New perspectives and applications for sustainable georesources Editorial: Micro-to nano-analytical challenges towards trace element characterization of ore minerals: New perspectives and applications for sustainable georesources
No abstract available.
Authors
Manuel Keith, Sarah M. Hayes, C. L. Ciobanu, D. Fougerouse, M. Reich
Modeling surface wave dynamics in upper Delaware Bay with living shorelines Modeling surface wave dynamics in upper Delaware Bay with living shorelines
Living shorelines gain increasing attention because they stabilize shorelines and reduce erosion. This study leverages physics-based models and bagged regression tree (BRT) machine learning algorithm to simulate wave dynamics at a living shoreline composed of constructed oyster reefs (CORs) in upper Delaware Bay. The physics-based models consist of coupled Delft3D-FLOW and SWAN in four...
Authors
Ling Zhu, Q. Chen, Hongqing Wang, Nan Wang, Kelin Hu, William D. Capurso, Lukasz M. Niemoczynski, Gregg Snedden