Publications
Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
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Reservoir stratification modulates the influence of impoundments on fish mercury concentrations along an arid land river system Reservoir stratification modulates the influence of impoundments on fish mercury concentrations along an arid land river system
Impoundment is among the most common hydrologic alterations with impacts on aquatic ecosystems that can include effects on mercury (Hg) cycling. However, landscape-scale differences in Hg bioaccumulation between reservoirs and other habitats are not well characterized nor are the processes driving these differences. We examined total Hg (THg) concentrations of Smallmouth Bass...
Authors
James Willacker, Collin A. Eagles-Smith, Jim Chandler, Jesse Naymik, Ralph Myers, David P. Krabbenhoft
A review of natural and managed revegetation responses in two de-watered reservoirs after large dam removals on the Elwha River, Washington, USA A review of natural and managed revegetation responses in two de-watered reservoirs after large dam removals on the Elwha River, Washington, USA
Large dam removals are increasing in frequency and the response of natural and managed revegetation is a critical consideration for managed restoration of dewatered reservoir landscapes post dam removal. The removal of two large dams on the Elwha River in 2011-2014 provides insight into reservoir revegetation. We review literature and datasets from 2012 through 2018, 1-6 years since...
Authors
Joshua Chenoweth, Patrick B. Shafroth, Rebecca L. Brown, James M. Helfield, Jenise M. Bauman, Sara Cendejas-Zarelli, Chhaya M. Werner, Jarrett L. Schuster, Olivia A. Morgan
Evaluation of anticoagulant rodenticide sensitivity by examining in vivo and in vitro responses in avian species, focusing on raptors Evaluation of anticoagulant rodenticide sensitivity by examining in vivo and in vitro responses in avian species, focusing on raptors
Anticoagulant rodenticides (ARs) are used to control pest rodent species but can result in secondary poisoning of non-target animals, especially raptors. In the present study, differences in AR sensitivity among avian species were evaluated by comparing in vivo warfarin pharmacokinetics and effects, measuring cytochrome P450s (CYPs) expression involved in AR metabolism, and conducting in...
Authors
Kraisiri Khidkhan, Fuyu Yasuhira, Aksorn Saengtienchai, Chaiyan Kasorndorkbua, Ratiwan Sitdhibutr, Kohei Ogasawara, Hikaru Adachi, Yukiko Watanabe, Keisuke Saito, Hidefumi Sakai, Kazuo Horikoshi, Hajime Suzuki, Yusuke K. Kawai, Kazuki Takeda, Yared B. Yohannes, Yoshinori Ikenaka, Barnett A. Rattner, Mayumi Ishizuka, Shouta Nakayama
Selection of microhabitats, plants, and plant parts eaten by a threatened tortoise: Observations during a superbloom Selection of microhabitats, plants, and plant parts eaten by a threatened tortoise: Observations during a superbloom
Populations of the threatened desert tortoise (Gopherus agassizii) continue to decline throughout the geographic range, in part because of degraded and fragmented habitats in the Mojave and western Sonoran deserts. The species is herbivorous and highly selective in choice of plant species. To increase options for recovery, we analyzed behaviors, patterns of movements while foraging, and...
Authors
W. Bryan Jennings, Kristin H. Berry
On the relationship between aquatic CO2 concentration and ecosystem fluxes in some of the world’s key wetland types On the relationship between aquatic CO2 concentration and ecosystem fluxes in some of the world’s key wetland types
To understand patterns in CO2 partial pressure (PCO2) over time in wetlands’ surface water and porewater, we examined the relationship between PCO2 and land–atmosphere flux of CO2 at the ecosystem scale at 22 Northern Hemisphere wetland sites synthesized through an open call. Sites spanned 6 major wetland types (tidal, alpine, fen, bog, marsh, and prairie pothole/karst), 7 Köppen...
Authors
Jessica L. Richardson, Ankur R. Desai, Jonathon Thom, Kim Lindgren, Hjalmar Laudon, Matthias Peichl, Mats B. Nilsson, Audrey Campeau, Jarvi Jarveoja, Peter Hawman, Deepak R. Mishra, Dontrece Smith, Brenda D’Acunha, Sara H. Knox, Darian Ng, Mark S. Johnson, Joshua M. Blackstock, Sparkle L. Malone, Steve F. Oberbauer, Matteo Detto, Kimberly Wickland, Inke Forbrich, Nathaniel B Weston, Jacqueline K.Y. Hung, Colin W. Edgar, Eugenie S. Euskirchen, Syndonia Bret-Harte, Jason Dobkowski, George Kling, Evan S. Kane, Pascal Badiou, Matthew Bogard, Gil Bohrer, Thomas O'Halloran, Jonny Ritson, Ariane Arias-Otriz, Dennis Baldocchi, Patty Oikawa, Julie Shahan, Maiyah Matsumura
Paranannizziopsis spp. infections in wild snakes and a qPCR assay for detection of the fungus Paranannizziopsis spp. infections in wild snakes and a qPCR assay for detection of the fungus
The emergence of ophidiomycosis (or snake fungal disease) in snakes has prompted increased awareness of the potential effects of fungal infections on wild reptile populations. Yet, aside from Ophidiomyces ophidiicola, little is known about other mycoses affecting wild reptiles. The closely related genus Paranannizziopsis has been associated with dermatomycosis in snakes and tuataras in...
Authors
Jeffrey M. Lorch, Megan Winzeler, Julia S. Lankton, Stephen Raverty, Heindrich N Snyman, Helen M. Schwantje, Caeley Thacker, Susan Knowles, Hugh Y Cai, Daniel A. Grear
An interoperability strategy for the next generation of SEEA accounting An interoperability strategy for the next generation of SEEA accounting
The System of Environmental-Economic Accounting (SEEA) is a set of international environmental-economic standards, adopted by the UN Statistical Commission in 2012 (SEEA Central Framework) and 2021 (SEEA Ecosystem Accounting); the latter in particular requires the integration of large and diverse data streams. These include geospatial and other data sources, which have proven challenging...
Authors
Ferdinando Villa, Stefano Balbi, Kenneth J. Bagstad, Alessio Bulckaen
Proximity to roads does not modify inorganic nitrogen deposition in a topographically complex, high traffic, subalpine forest Proximity to roads does not modify inorganic nitrogen deposition in a topographically complex, high traffic, subalpine forest
Vehicles are an important source for N deposition that may negatively impact roadside ecosystems. While elevated roadside N deposition has been found in many locations, it is not yet known if vehicle emissions cause measurable increases of N deposition in complex, mountainous terrain adjacent to roads. To address this, this study investigated the effect of vehicle N emissions on...
Authors
Katherine S. Rocci, M. Francesca Catrufo, Jill Baron
Geothermal Play Fairway Analysis, Part 2: GIS methodology Geothermal Play Fairway Analysis, Part 2: GIS methodology
Play Fairway Analysis (PFA) in geothermal exploration originates from a systematic methodology developed within the petroleum industry and is based on a geologic, geophysical, and hydrologic framework of identified geothermal systems. We tailored this methodology to study the geothermal resource potential of the Snake River Plain and surrounding region, but it can be adapted to other...
Authors
Jacob DeAngelo, John W. Shervais, Jonathan M.G. Glen, Dennis Nielson, Sabodh Garg, Patrick Dobson, Erika Gasperikova, Eric Sonnenthal, Lee M. Liberty, Drew Lorenz Siler, James P. Evans
Monitoring interdecadal coastal change along dissipative beaches via satellite imagery at regional scale Monitoring interdecadal coastal change along dissipative beaches via satellite imagery at regional scale
Coastal morphological changes can be assessed using shoreline position observations from space. However, satellite-derived waterline (SDW) and shoreline (SDS; SDW corrected for hydrodynamic contributions and outliers) detection methods are subject to several sources of uncertainty and inaccuracy. We extracted high-spatiotemporal-resolution (~50 m-monthly) time series of mean high water...
Authors
Marcan Graffin, Mohsen Taherkhani, Meredith Leung, Sean Vitousek, George Kaminsky, Peter Ruggiero
Shifting hotspots: Climate change projected to drive contractions and expansions of invasive plant abundance habitats Shifting hotspots: Climate change projected to drive contractions and expansions of invasive plant abundance habitats
Aim Preventing the spread of range-shifting invasive species is a top priority for mitigating the impacts of climate change. Invasive plants become abundant and cause negative impacts in only a fraction of their introduced ranges, yet projections of invasion risk are almost exclusively derived from models built using all non-native occurrences and neglect abundance information.Location...
Authors
Annette E. Evans, Catherine S. Jarnevich, Evelyn M. Beaury, Peder S. Engelstad, Nathan B. Teich, Jillian LaRoe, Bethany A. Bradley
Groundwater flow model investigation of the vulnerability of water resources at Chaco Culture National Historical Park related to unconventional oil and gas development Groundwater flow model investigation of the vulnerability of water resources at Chaco Culture National Historical Park related to unconventional oil and gas development
Chaco Culture National Historical Park (CCNHP), located in northwestern New Mexico, protects the greatest concentration of Chacoan historical sites in the American Southwest. Geologically, CCNHP is located within the San Juan structural basin, which consists in part of complex Cretaceous stratigraphy and hosts a variety of energy resources. As part of a larger study to investigate the
Authors
Zachary M. Shephard, Andre B. Ritchie, Benjamin S. Linhoff, John Joseph Lunzer