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41031 results.

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Page 80, results 1976 - 2000

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Impacts of convective storms on runoff, erosion, and carbon export in a continuous permafrost landscape
Marisa Repasch, Josie Arcuri, Irina Overeem, Suzanne P. Anderson, Robert G. Anderson, Joshua C. Koch
2024, Conference Paper
Permafrost holds more than twice the amount of carbon currently in the atmosphere, but this large carbon reservoir is vulnerable to thaw and erosion under a rapidly changing Arctic climate. Convective storms are becoming increasingly common during Arctic summers and can amplify runoff and erosion. These extreme events, in concert...
Pilot framework for fish habitat assessments across tidal and non tidal waters in the Patuxent River Basin
H Nisonson, Alexander H. Kiser, Benjamin P. Gressler, A Leight, John A. Young
2024, NOAA Technical Memorandum NOS NCCOS 332
As part of the 2014 Chesapeake Bay Watershed Agreement, all Bay States and the District of Columbia have committed to improving the condition of the Bay, which includes a goal to achieve sustainable fisheries. One outcome under that broad goal is improved effectiveness of fish habitat conservation and preservation efforts....
Oil and gas development influences potential for dust emission from the Upper Colorado River Basin, USA
Gayle Loren Tyree, A. Chappell, Miguel L. Villarreal, S. Dhital, Michael C. Duniway, B.L. Edwards, A.M. Faist, T.W. Nauman, N.P. Webb
2024, Earth Surface Processes and Landforms (49) 3292-3307
Wind erosion and dust emission from drylands have large consequences for ecosystem function and human health. Wind erosion is naturally reduced by soil crusting and sheltering by non-erodible roughness elements such as plants. Land uses that reduce surface roughness and disturb the soil surface can dramatically increase dust emission. Extraction...
Application of a workflow to determine the feasibility of using simulated streamflow for estimation of streamflow frequency statistics
Amanda Whaling, Kelly Sanks, William H. Asquith, Kirk D. Rodgers
2024, Journal of Hydrologic Engineering (29)
Streamflow records from hydrologic models are attractive for use in operational hydrology, such as a streamflow frequency analysis. The amount of bias inherent to simulated streamflow from hydrologic models is often unknown, but it is likely present in derivative products. Therefore, a workflow may help determine where streamflow frequency analysis...
Upper crustal seismic velocity structure of the Hayward fault zone, San Francisco Bay, California, USA: Results from the 2016 East Bay Seismic Experiment (EBSI-16)
Rufus D. Catchings, Luther M. Strayer, Joanne H. Chan, Mark Goldman, Andrian T. McEvilly, J. Suppe
2024, GSA Bulletin (136) 3261-3276
We developed Vp, Vs, Vp/Vs ratio, and Poisson’s ratio models of the uppermost crust (<4 km depth) from the eastern San Francisco (SF) Bay (California, USA) to near the Calaveras fault along a 15-km-long, linear profile. Upper crustal velocities are highly variable beneath, west, and well east of the Hayward fault. We...
Predicting the response of a long-distance migrant to changing environmental conditions in winter
Richard A. Stillman, E.M. Rivers, W. Gilkerson, K. A. Wood, P. Clausen, C. Deane, David H. Ward
2024, Ecology and Evolution (14)
Access to high-quality food is critical for long-distance migrants to provide energy for migration and arrival at breeding grounds in good condition. We studied effects of changing abundance and availability of a marine food, common eelgrass (Zostera marina L.), on an arctic-breeding, migratory goose, black brant (Brant bernicla nigricans Lawrence 1846), at...
Characterising, quantifying, and accessing eruption source parameters of explosive volcanic eruptions for operational simulation of tephra dispersion: A current view and future perspectives
Samantha Engwell, Larry G. Mastin, Contanza Bonadonna, Sara Barsotti, Natalia I. Deligne, Bergrun A. Oladottir
2024, Bulletin of Volcanology (86)
Eruption source parameters (ESPs) are crucial for characterising volcanic eruptions and are essential inputs to numerical models used for hazard assessment. Key ESPs of explosive volcanic eruptions include plume height, mass eruption rate, eruption duration, and grain-size distribution. Some of these ESPs can be directly observed...
A fire-use decision model to improve the United States’ wildfire management and support climate change adaptation
Aaron Daniel Russell, Nina Fontana, Tyler Hoecker, Alyssa Kamanu, Reetam Majumder, Jilmarie Stephens, Adam Young, Amanda E. Cravens, Christian Giardina, Kevin Hiers, Jeremy S. Littell, Adam Terando
2024, Cell Reports Sustainability (1)
The US faces multiple challenges in facilitating the safe, effective, and proactive use of fire as a landscape management tool. This intentional fire use exposes deeply ingrained communication challenges and distinct but overlapping strategies of prescribed fire, cultural burning, and managed wildfire. We argue for a new conceptual model that...
Seismically detected cratering on Mars: Enhanced recent impact flux?
Ingrid J. Daubar, Raphael F. Garcia, Alexander E. Stott, Benjamin Fernando, Gareth S. Collins, Colin M. Dundas, Natalia Wojcicka, Geraldine Zenhausern, Alfred S. McEwen, Simon C. Stahler, Matthew P. Golombek, Constantinos Charalambous, Domenico Giardini, Philippe Lognonne, W. Bruce Banerdt
2024, Science Advances (10)
Seismic observations of impacts on Mars indicate a higher impact flux than previously measured. Using six confirmed seismic impact detections near the NASA InSight lander and two distant large impacts, we calculate appropriate scalings to compare these rates with lunar-based chronology models. We also update the impact rate from orbital...
The National Ocean Biodiversity Strategy
Gabrielle Canonico, J. Emmett Duffy, Masha Edmonson, Katie Fillingham, Abigail Benson, Kelsey Bisson, Amanda Demopoulos, Beth Hinchey, Katsumi Matsumoto, Chris Meyer, James Price, Elaine Shen, Woody Turner, Mike Weise, Andrea Vander Woude, Lauren Wenzel
2024, Report
President Biden has been clear that the ocean is central to life on Earth. As he has proclaimed, “the ocean powers millions of jobs; feeds and sustains us; and is a rejuvenating source of inspiration, exploration, and recreation.” The Biden-Harris Administration has worked hard to fulfill the President’s goal to...
Coyote use of prairie dog colonies is most frequent in areas used by American badgers
Rebecca Windell, Larissa L. Bailey, Travis M. Livieri, David A. Eads, Dean E. Biggins, Stewart Breck
2024, Journal of Mammalogy
The consequences of intraguild predation on vulnerable subordinate species are an important consideration in the recovery of endangered species. In prairie ecosystems, coyotes (Canis latrans) are the primary predator of endangered black-footed ferrets (Mustela nigripes; hereafter, ferrets) and presumably compete for prairie dog (Cynomys spp.) prey. Coyote predation of ferrets...
Evaluating post-wildfire debris-flow rainfall thresholds and volume models at the 2020 Grizzly Creek Fire in Glenwood Canyon, Colorado, USA
Francis K. Rengers, Samuel Bower, Andrew Knapp, Jason W. Kean, Danielle W. vonLembke, Matthew A. Thomas, Jaime Kostelnik, Katherine R. Barnhart, Matthew Bethel, Joseph E. Gartner, Madeline Hille, Dennis M. Staley, Justin K. Anderson, Elizabeth K. Roberts, Stephen B. DeLong, Belize Lane, Paxton Ridgeway, Brendan Murphy
2024, NHESS (24) 2093-2114
As wildfire increases in the western United States, so do postfire debris-flow hazards. The U.S. Geological Survey (USGS) has developed two separate models to estimate (1) rainfall intensity thresholds for postfire debris-flow initiation and (2) debris-flow volumes. However, the information necessary to test the accuracy of...
Pasture and diurnal temperature are key predictors of regional Plains Spotted Skunk (Spilogale interrupta) distribution
Kara M. White, Amanda E. Cheeseman, Joshua D. Stafford, Robert Charles Lonsinger
2024, Journal of Mammalogy
The Plains Spotted Skunk (Spilogale interrupta) is a small carnivore native to central North America that has experienced significant population reductions, and there is a lack of information about the species that could inform conservation. Our study aimed to address knowledge gaps about the distribution and habitat associations of the...
Climate, food and humans predict communities of mammals in the United States
Roland Kays, Matthew H. Snider, George Hess, Michael V. Cove, Alex Jensen, Hila Shamon, William J. McShea, Brigit Rooney, Maximilian L. Allen, Charles E. Pekins, Christopher C. Wilmers, Mary E. Pendergast, Austin M. Green, Justin Suraci, Matthew S. Leslie, Sophie Nasrallah, Dan Farkas, Mark Jordan, Melissa Grigione, Michael LaScaleia, Miranda L. Davis, Chris Hansen, Josh Millspaugh, Jesse S. Lewis, Michael Havrda, Robert Long, Kathryn R. Remine, Kodi J. Jaspers, Diana J. R. Lafferty, Tru Hubbard, Colin E. Studds, Erika L. Barthelmess, Katherine Andy, Andrea Romero, Brian J. O’Neill, Melissa T.R. Hawkins, Jason V. Lombardi, Maksim Sergeyev, M. Caitlin Fisher-Reid, Michael S. Rentz, Christopher Nagy, Jon D Davenport, Christine C. Rega-Brodsky, Cara L. Appel, Damon B. Lesmeister, Sean T. Giery, Christopher A. Whittier, Jesse M. Alston, Chris Sutherland, Christopher Rota, Thomas Murphy, Thomas E. Lee Jr., Alessio Mortelliti, Dylan L. Bergman, Justin A. Compton, Brian D. Gerber, Jess Burr, Kylie Rezendes, Brett Alexander DeGregorio, Nathaniel H. Wehr, John F. Benson, M. Teague O’Mara, David S. Jachowski, Morgan Gray, Dean E. Beyer Jr., Jerrold L. Belant, Robert V. Horan III, Robert Charles Lonsinger, Kellie M. Kuhn, Steven C. M. Hasstedt, Marketa Zimova, Sophie M. Moore, Daniel J. Herrera, Sarah Fritts, Andrew J. Edelman, Elizabeth A. Flaherty, Tyler R. Petroelje, Sean A. Neiswenter, Derek R. Risch, Fabiola Iannarilli, Marius van der Merwe, Sean P. Maher, Zach J. Farris, Stephen L. Webb, David S. Mason, Marcus A. Lashley, Andrew M. Wilson, John P. Vanek, Samuel R. Wehr, L. Mike Conner, James C. Beasley, Helen L. Bontrager, Carolina Baruzzi, Susan N. Ellis-Felege, Mike D. Proctor, Jan Schipper, Katherine Weiss, Andrea K. Darracq, Evan G. Barr, Peter D. Alexander, Cagan H. Sekercioglu, Daniel A. Bogan, Christopher M. Schalk, Jean E. Fantle-Lepczyk, Christopher A. Lepczyk, Scott LaPoint, Laura S. Whipple, Helen Ivy Rowe, Kayleigh Mullen, Tori Bird, Adam Zorn, LaRoy Brandt, Richard G. Lathrop, Craig McCain, Anthony P. Crupi, James Clark, Arielle Parsons
2024, Diversity and Distributions (30)
AimThe assembly of species into communities and ecoregions is the result of interacting factors that affect plant and animal distribution and abundance at biogeographic scales. Here, we empirically derive ecoregions for mammals to test whether human disturbance has become more important than climate and habitat resources in...
Total phosphorus and suspended-sediment concentrations and loads from two main tributaries to Upper Klamath Lake, Oregon, 2014–20
Liam N. Schenk, Caelan Simeone
2024, Open-File Report 2024-1034
Total phosphorus (TP) and suspended-sediment concentrations (SSC) and loads were computed at two U.S. Geological Survey (USGS) streamgages in the upper Klamath River Basin on the Sprague (USGS site ID 11501000) and Williamson (USGS site ID 11502500) Rivers using high temporal resolution turbidity and streamflow data to develop surrogate regression...
An integrated perspective of paleoenvironmental change in the Western Interior Seaway before and during OAE-2 reveals how organic-rich mudstones form in dynamic environments
Katherine L. French, Jason A. Flaum, Justin E. Birdwell
2024, Earth and Planetary Science Letters (642)
Organic and inorganic geochemistry was integrated with sedimentology from the Eagle Ford Group in the U.S. Geological Survey Gulf Coast-3 drill core to investigate why organic matter enrichment and anoxia predate the Cenomanian–Turonian oceanic anoxic event (OAE-2) at the southern Western Interior Seaway (WIS). The relationship between the...
Geographic principles applied to population dynamics: A spatially interpolated integrated population model
Brian G. Prochazka, Peter S. Coates, Shawn T. O’Neil, Shawn P. Espinosa, Cameron L. Aldridge
2024, Methods in Ecology and Evolution (15) 1394-1407
A major impediment to wildlife conservation and management, from a quantitative perspective, is dealing with high degrees of uncertainty associated with population estimates. Integrated population models (IPMs) can help alleviate that challenge, but they are often limited to narrow spatial or temporal windows...
Factors influencing larval coregonine spatial distribution in Lake Geneva (Europe) and Lake Superior (North America) during a single season near known spawning sites
Jamie A. Dobosenski, Daniel L. Yule, Jean Guillard, Orlane Anneville, Edmund J. Isaac, Jason D. Stockwell, Jared T. Myers, Amanda Susanne Ackiss, Rosaura J. Chapina, Seth A. Moore
2024, International Journal of Limnology (60)
Survival rate of the larval stage is an important driver of fish recruitment. To understand mechanisms regulating larval survival it is important to understand the relative importance of abiotic and biotic factors that shape larval spatial distributions. We studied larval Coregonus distributions in surface waters (surface to 1 m) by repeatedly sampling study...
Detection of periodic peaks in Karenia brevis concentration consistent with the time-delay logistic equation
Bruce E. Kurtz, James E. Landmeyer, James K. Culter
2024, Science of the Total Environment (946)
The logistic equation models single-species population growth with a sigmoid curve that begins as exponential and ends with an asymptotic approach to a final population determined by natural system carrying capacity. But the population of a natural system often does not stabilize as it approaches carrying capacity. Instead, it...
Boulders modulate hillslope-channel coupling in the northern Alaska Range
Adrian Bender, Richard O. Lease
2024, Geology (52) 695-699
Active orogens balance tectonic rock uplift with erosion, commonly via river incision coupled to landslide denudation of “threshold” hillslopes, but sediment’s role in this feedback is unclear. We report fluvial geometry, and sediment size, prevalence, and mobility across two ≤600-m-tall gneissic northern Alaska...
Satellite telemetry reveals high-use internesting areas and international foraging extent for loggerhead turtles tagged in southeast Florida, USA
Glenn D. Goodwin, Kristen Hart, Abby C. Evans, Derek A. Burkholder
2024, Endangered Species Research (54) 245-259
Developing conservation strategies for highly migratory marine species relies on understanding their spatial distributions. Nesting populations of female loggerhead (Caretta caretta) turtles typically travel from widely dispersed foraging areas and make use of common internesting areas between nesting events. Protection of these areas is essential to the conservation of...
Black Terns (Chlidonias niger) beyond the breeding grounds: Occurrence, relative density, and habitat associations in the northern Gulf of Mexico
Pamela E. Michael, Jeffrey S. Gleason, J. Christopher Haney, Kathy M. Hixson, Yvan G. Satgé, Patrick G.R. Jodice
2024, Wilson Journal of Ornithology (136) 220-236
North American Black Terns (Chlidonias niger) breed primarily in the Prairie Pothole region of southern Canada and the northern United States, winter in Central and South American waters, and often migrate through the northern Gulf of Mexico (nGoM). This species has exhibited long-term population declines and is exposed to a...
Two-dimensional hydraulic model for the Chain of Lakes on the Fox River near McHenry, Illinois
Charles V. Cigrand, Michael R. Ament
2024, Scientific Investigations Report 2024-5056
Forecasts of flows entering and leaving the Chain of Lakes on the Fox River in northeastern Illinois are critical information to water-resource managers operating the Stratton Dam at McHenry, Illinois. These managers determine the optimal operation of the Stratton Dam at McHenry, Ill., to manage Chain of Lakes pool levels...
Multistage time-to-event models improve survival inference by partitioning mortality processes of tracked organisms
Suresh A. Sethi, Alex L. Koeberle, Anna J. Poulton, Daniel W. Linden, Duane R. Diefenbach, Frances E. Buderman, Mary Jo Casalena, Kenneth Duren
2024, Scientific Reports (14)
Advances in tagging technologies are expanding opportunities to estimate survival of fish and wildlife populations. Yet, capture and handling effects could impact survival outcomes and bias inference about natural mortality processes. We developed a multistage time-to-event model that can partition the survival process into sequential phases that reflect the tagged...
Population and spatial dynamics of desert bighorn sheep in Grand Canyon during an outbreak of respiratory pneumonia
Clinton W. Epps, P. Brandon Holton, Ryan J. Monello, Rachel S. Crowhurst, Sarah Mccrimmon Gaulke, William Michael Janousek, Tyler G. Creech, Tabitha A. Graves
2024, Frontiers in Ecology and Evolution (12)
Introduction: Terrestrial species in riverine ecosystems face unique constraints leading to diverging patterns of population structure, connectivity, and disease dynamics. Desert bighorn sheep (Ovis canadensis nelsoni) in Grand Canyon National Park, a large native population in the southwestern USA, offer a unique opportunity to evaluate population patterns and processes in a...