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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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Behavioral responses of native and invasive fishes of the Upper Mississippi River to 100 hp boat motor acoustic stimulus Behavioral responses of native and invasive fishes of the Upper Mississippi River to 100 hp boat motor acoustic stimulus
Acoustic deterrents are currently being considered for deployment at strategic bottlenecks, such as lock and dams of major rivers, to deter upstream movement of invasive carp. Previous studies have demonstrated that bighead and silver carp (Hypophthalmichthys nobilis and H. molitrix, respectively) display negative phonotaxis to playbacks of broadband sound recordings produced from a 100...
Authors
Kelsie A. Murchy, Brooke J Vetter, Marybeth K. Brey, Allen F. Mensinger
Influence of test method variables on sensitivity of Neocloeon triangulifer to a reference toxicant in short-term, effluent style evaluations Influence of test method variables on sensitivity of Neocloeon triangulifer to a reference toxicant in short-term, effluent style evaluations
Recent literature has demonstrated the sensitivity of mayflies to environmental contaminants. However, to date, there are no methods approved by the US Environmental Protection Agency for using sensitive insects like mayflies in whole-effluent toxicity or receiving water toxicity tests. The parthenogenetic mayfly Neocloeon triangulifer has been shown to be amenable to continuous culture...
Authors
David J. Soucek, Amy Dickinson, Teresa J. Norberg-King
Preface to the focus section on deformation models for the U.S. National Seismic Hazard Model Preface to the focus section on deformation models for the U.S. National Seismic Hazard Model
No abstract available.
Authors
Frederick Pollitz, Alexandra Elise Hatem, Kaj M. Johnson
The generational gap: Children, adults, and protective actions in response to earthquakes The generational gap: Children, adults, and protective actions in response to earthquakes
In addition to academic curricula, schools offer regular drills to train young people and adult staff on what to do in an emergency or disaster. Earthquake drills in the United States currently recommend the protective action “drop, cover, and hold on” in the event of shaking. Yet, little is known about whether this guidance is followed in schools and homes by children and adults. To...
Authors
Rachel M. Adams, Jennifer Tobin, Lori Peek, Jolie Breeden, Sara K. McBride, Robert Michael deGroot
Linking evolutionary potential to extinction risk: Applications and future directions Linking evolutionary potential to extinction risk: Applications and future directions
Extinction-risk assessments play a major role in prioritizing conservation action at national and international levels. However, quantifying extinction risk is challenging, especially when including the full suite of adaptive responses to environmental change. In particular, evolutionary potential (EP), the capacity to evolve genetically based changes that increase fitness under changing
Authors
Brenna R. Forester, Erik A. Beever, Catherine Darst, Jennifer Szymanski, W. Chris Funk
New generation hyperspectral sensors DESIS and PRISMA provide improved agricultural crop classifications New generation hyperspectral sensors DESIS and PRISMA provide improved agricultural crop classifications
Using new remote sensing technology to study agricultural crops will support advances in food and water security. The recently launched, new generation spaceborne hyperspectral sensors, German DLR Earth Sensing Imaging Spectrometer (DESIS) and Italian PRecursore IperSpettrale della Missione Applicativa (PRISMA), provide unprecedented data in hundreds of narrow spectral bands for the...
Authors
Itiya P. Aneece, Prasad Thenkabail
Warming-driven erosion and sediment transport in cold regions Warming-driven erosion and sediment transport in cold regions
Rapid atmospheric warming since the mid-twentieth century has increased temperature-dependent erosion and sediment-transport processes in cold environments, affecting food, energy and water security. In this Review, we summarize landscape changes in cold environments and provide a global inventory of increases in erosion and sediment yield driven by cryosphere degradation. Anthropogenic...
Authors
Tinghu Zhang, Dongfeng Li, Amy E. East, Desmond E. Walling, Stuart N. Lane, Irina Overeem, Achim A. Beylich, Michele N Koppes, Xixi Lu
Perspectives on challenges and opportunities at the restoration-policy interface in the U.S.A. Perspectives on challenges and opportunities at the restoration-policy interface in the U.S.A.
As we advance into the United Nations Decade on Ecosystem Restoration, understanding the relationship between science, management, and policy is increasingly important given the paucity of research evaluating the ability of existing policy to address contemporary environmental challenges. Despite their inherent interdependence, restoration ecology as a scientific discipline, ecological...
Authors
Ella M. Samuel, Rachel M. Mitchell, Daniel E. Winkler
Identifying mechanisms underlying individual body size increases in a changing, highly seasonal environment: The growing trout of West Brook Identifying mechanisms underlying individual body size increases in a changing, highly seasonal environment: The growing trout of West Brook
As air temperature increases, it has been suggested that smaller individual body size may be a general response to climate warming. However, for ectotherms inhabiting cold, highly seasonal environments, warming temperatures may increase the scope for growth and result in larger body size.In a long-term study of individual brook trout Salvelinus fontinalis and brown trout Salmo trutta...
Authors
Benjamin Letcher, Keith Nislow, Matthew J. O'Donnell, Andrew R. Whiteley, Jason Coombs, Todd L. Dubreuil, Daniel Turek
Occurrence of a reproducing wild population of Channa aurolineata (Pisces: Channidae) in the Manatee River drainage, Florida Occurrence of a reproducing wild population of Channa aurolineata (Pisces: Channidae) in the Manatee River drainage, Florida
We report on the discovery of a wild, reproducing population of Channa aurolineata (Pisces: Channidae) in west-central Florida (USA), and first documented occurrence of snakeheads in the Gulf Coast region. Channa aurolineata is a large, predatory fish of the bullseye snakehead “Marulius group” species complex from Asia. Adult and juvenile specimens were captured in June 2020 in a 1.8...
Authors
Leo Nico, Matthew Neilson, Robert H. Robins, John M. Pfeiffer, Matthew Kail, Zachary S. Randall, Eric A. Johnson