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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.
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Movement patterns of a small-bodied minnow suggest nomadism in a fragmented, desert river Movement patterns of a small-bodied minnow suggest nomadism in a fragmented, desert river
Background Unfettered movement among habitats is crucial for fish to access patchily distributed resources and complete their life cycle, but many riverscapes in the American Southwest are fragmented by dams. The federally endangered Rio Grande silvery minnow (Hybognathus amarus, RGSM) persists in a fragmented remnant of its former range (ca. 95% range reduction), and its movement...
Authors
Martinique J. Chavez, Phaedra E. Budy, Casey A. Pennock, Thomas P. Archdeacon, Peter D. MacKinnon
Wildfires influence mercury transport, methylation, and bioaccumulation in headwater streams of the Pacific Northwest Wildfires influence mercury transport, methylation, and bioaccumulation in headwater streams of the Pacific Northwest
The increasing frequency and severity of wildfires are among the most visible impacts of climate change. However, the effects of wildfires on mercury (Hg) transformations and bioaccumulation in stream ecosystems are poorly understood. We sampled soils, water, sediment, in-stream leaf litter, periphyton, and aquatic invertebrates in 36 burned (one-year post fire) and 21 reference...
Authors
Austin K. Baldwin, James Willacker, Branden L. Johnson, Sarah E. Janssen, Collin A. Eagles-Smith
The LTAR Grazing Land Common Experiment at the Jornada Experimental Range: Old genetics, new precision technologies, and adaptive value chains The LTAR Grazing Land Common Experiment at the Jornada Experimental Range: Old genetics, new precision technologies, and adaptive value chains
Rangelands and the supply chains connected to them are central to the agrifood systems of the Southwestern United States. Local ranchers are simultaneously arid lands managers, herd managers, and marketing managers. To stay in business, they must constantly adapt to unpredictable forage resources and markets while conserving soils and vegetation resources for the long term. As climate...
Authors
Sheri Spiegal, Rick E. Estell, Andres F. Cibils, Andrew Cox, Matthew M. McIntosh, Dawn M. Browning, Michael C. Duniway, Micah Funk, Lara Macon, Sarah E. McCord, Matthew Redd, Cindy Tolle, Santiago A. Utsumi, Jeremy Walker, Nicholas P. Webb, Brandon T. Bestelmeyer
Re-evaluating Marine Isotope Stage 5a paleo-sea-level trends from across the Florida Keys reef tract Re-evaluating Marine Isotope Stage 5a paleo-sea-level trends from across the Florida Keys reef tract
Unraveling how Global Mean Sea Level (GMSL) fluctuated during past warm periods can improve our understanding of linkages between sea-level fluctuations, orbital forcing, and ice-sheet dynamics. Current estimates of GMSL for Marine Isotope Stages (MIS) 5a and 5c — two warm intervals following the relatively well-documented MIS 5e — contain meters of uncertainty and fewer data due to...
Authors
Scarlette Hsia, Lauren T. Toth, Richard A. Mortlock, Charles Kerans
Vulnerability of mineral-associated soil organic carbon to climate across global drylands Vulnerability of mineral-associated soil organic carbon to climate across global drylands
Mineral-associated organic carbon (MAOC) constitutes a major fraction of global soil carbon and is assumed less sensitive to climate than particulate organic carbon (POC) due to protection by minerals. Despite its importance for long-term carbon storage, the response of MAOC to changing climates in drylands, which cover more than 40% of the global land area, remains unexplored. Here we...
Authors
Díaz-Martínez Paloma, Fernando T. Maestre, Eduardo Moreno-Jimenez, Manuel Delgado-Baquerizo, David J. Eldridge, Hugo Saiz, Nicolas Gross, Yoann Le Bagousse-Pinguet, Beatriz Gozalo, Victoria Ochoa, Emilio Guirado, Miguel García-Gómez, Enrique Valencia, Sergio Asensio, Miguel Berdugo, Jaime Martinez-Valderrama, Betty J. Mendoza, Juan C. García-Gil, Claudio Zaccone, Marco Panettieri, Pablo García-Palacios, Wei Fan, Iria Benavente-Ferraces, Ana Rey, Nico Eisenhauer, Simone Cesarz, Mehdi Abedi, Rodrigo J. Ahumada, Julio M. Alcantara, Fateh Amghar, Valeria Aramayo, Antonio I. Arroyo, Khadijeh Bahalkeh, Farah Ben Salem, Niels Blaum, Bazartseren Boldgiv, Matthew A. Bowker, Donaldo Bran, Cristina Branquinho, Chongfeng Bu, Yonatan Cáceres, Rafaella Canessa, Andrea P. Castillo-Monroy, Ignacio Castro, Patricio Castro-Quezada, Roukaya Chibani, Abel A. Conceição, Courtney M. Currier, Anthony Darrouzet-Nardi, Balazs Deak, Christopher R. Dickman, David A. Donoso, Andrew J. Dougill, Jorge Duran, Hamid Ejtehadi, Carlos I. Espinosa, Alex Fajardo, Mohammad Farzam, Daniela Ferrante, Lauchlan H. Fraser, Juan J. Gaitan, Elizabeth Gusman Montalván, Rosa M. Hernández-Hernández, Andreas von Hessberg, Norbert Holzel, Elisabeth Huber-Sannwald, Frederic M. Hughes, Oswaldo Jadan-Maza, Katja Geissler, Anke Jentsch, Mengchen Ju, Kudzai F. Kaseke, Liana Kindermann, Jessica E. Koopman, Peter C. le Roux, Pierre Liancourt, Anja Linstadter, Jushan Liu, Michelle A. Louw, Gillian Maggs-Kolling, Thulani P. Makhalanyane, Oumarou Malam Issa, Eugene Marais, Pierre Margerie, Antonio J. Mazaneda, Mitchel P. McClaran, Joao Vitor S. Messeder, Juan P. Mora, Gerardo Moreno, Seth M. Munson, Alice Nunes, Gabriel Oliva, Gastón R. Oñatibia, Brooke Osborne, Guadalupe Peter, Yolanda Pueyo, R. Emiliano Quiroga, Sasha C. Reed, Victor M. Reyes, Alexandra Rodriguez, Jan C. Ruppert, Osvaldo E. Sala, Ayman Salah, Julius Sebei, Michael Sloan, Shijirbaatar Solongo, Ilan Stavi, Colton R.A. Stephens, Alberto L. Teixido, Andrew D. Thomas, Heather L. Throop, Katja Tielborger, Samantha K. Travers, James Val, Orsolya Valko, Liesbeth van den Brink, Frederike Velbert, Wanyoike Wamiti, Deli Wang, Lixin Wang, Glenda M. Wardle, Laura Yahdjian, Eli Zaady, Juan M. Zeberio, Yuanming Zhang, Xiaobing Zhou, Cesar Plaza
Freshwater biogeochemical hotspots: High primary production and ecosystem respiration in shallow waterbodies Freshwater biogeochemical hotspots: High primary production and ecosystem respiration in shallow waterbodies
Ponds, wetlands, and shallow lakes (collectively “shallow waterbodies”) are among the most biogeochemically active freshwater ecosystems. Measurements of gross primary production (GPP), respiration (R), and net ecosystem production (NEP) are rare in shallow waterbodies compared to larger and deeper lakes, which can bias our understanding of lentic ecosystem processes. In this study, we...
Authors
Joseph Rabaey, Meredith Holgerson, David Richardson, Mikkel R. Andersen, Sheel Bansal, Lauren E Bortolotti, James Cotner, Daniel Hornbach, Kenneth T. Martinsen, Eric Moody, Olivia F. Schloegel
Modeling rare plant habitat together with public land managers using an iterative, coproduced process to inform decision-making on multiple-use public lands Modeling rare plant habitat together with public land managers using an iterative, coproduced process to inform decision-making on multiple-use public lands
Public lands across the United States are managed for multiple uses, resources, and values ranging from energy development to rare plant conservation. Intensified energy development and other land use changes across the Southwestern United States have increased the need for proactive management to mitigate impacts to rare plants. Habitat suitability models can inform decision-making and...
Authors
Catherine S. Jarnevich, Sarah K. Carter, Zoe M. Davidson, Nicole D. MacPhee, Patrick J. Alexander, Brandon Hayes, Pairsa N. Belmaric, Benjamin R Harms
Inconsistent transcriptomic responses to hexabromocyclododecane in Japanese quail: A comparative analysis of results from four different study designs Inconsistent transcriptomic responses to hexabromocyclododecane in Japanese quail: A comparative analysis of results from four different study designs
Efforts to use transcriptomics for toxicity testing have classically relied on the assumption that chemicals consistently produce characteristic transcriptomic signatures that are reflective of their mechanism of action. However, the degree to which transcriptomic responses are conserved across different test methodologies has seldom been explored. With increasing regulatory demand for...
Authors
Paul Béziers, Elena Legrand, Emily Boulanger, Niladri Basu, Jessica Ewald, Paula F. P. Henry, Marcus Hecker, Jianguo Xia, Natalie Karouna-Renier, Doug Crump, Jessica A. Head
Resilient riverine social–ecological systems: A new paradigm to meet global conservation targets Resilient riverine social–ecological systems: A new paradigm to meet global conservation targets
The United Nations' Convention on Biological Diversity set forth the 30 × 30 target, an agenda for countries to protect at least 30% of their terrestrial, inland water, and coastal and marine areas by 2030. With
Authors
Denielle M. Perry, Sarah J. Praskievicz, Ryan McManamay, Alark Saxena, K. C. Grimm, Nicholas Zegre, Lucas Bair, Benjamin L. Ruddell, Richard Rushforth
Genetic origins of a resurging lake whitefish, Coregonus clupeaformis, population in the Detroit River, Laurentian Great Lakes Genetic origins of a resurging lake whitefish, Coregonus clupeaformis, population in the Detroit River, Laurentian Great Lakes
The Detroit River connects Lake Huron and Lake Erie of the Laurentian Great Lakes. The river once supported a substantial lake whitefish (Coregonus clupeaformis) fishery until the early 1900s, when habitat loss, pollution, and overfishing contributed to the collapse of the fishery and loss of spawning populations in the river. In the early 1970s, efforts were initiated to improve water...
Authors
Wendylee Stott, Robin L. DeBruyne, Edward F. Roseman
Effect of a dense inflow on the stratification of a steep-side lake Effect of a dense inflow on the stratification of a steep-side lake
We detail the effect of a small stream of dense inflow that significantly altered the stratification and water quality in a constructed water body in northern British Columbia, Canada. As the dense inflow passed through the epilimnion of the steep-sided lake, it entrained relatively large quantities of water. The resulting mixture of dense inflow and entrained epilimnetic water sank to...
Authors
Roger Pieters, Gregory A. Lawrence, Albert Leung, John Crusius, Thomas Pedersen
3-D geological modeling for numerical flow simulation studies of gas hydrate reservoirs at the Kuparuk State 7-11-12 Pad in the Prudhoe Bay Unit on the Alaska North Slope 3-D geological modeling for numerical flow simulation studies of gas hydrate reservoirs at the Kuparuk State 7-11-12 Pad in the Prudhoe Bay Unit on the Alaska North Slope
Accurate reservoir evaluation requires reliable three-dimensional (3-D) geological models. This study conducted 3-D geological modeling for numerical flow simulation of the B1 sand gas hydrate reservoir at the Kuparuk State 7-11-12 pad, Prudhoe Bay Unit, Alaska North Slope. The model integrates well logs, core, and seismic data to address spatial heterogeneity in geological structures...
Authors
Machiko Tamaki, Misuzu Taninaka, Satoshi Ohtsuki, Aung Than Tin, Naoyuki Shimoda, Timothy Collett, Ray Boswell