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Page 110, results 2726 - 2750

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Comparing empirical sediment transport modeling approaches in Michigan rivers
Joel T. Groten, Sara B. Levin, Erin N. Coenen, J. William Lund, Bethany Matousek
2023, Conference Paper, SEDHYD 2023
Excess or limited fluvial sediment transport can contribute to and exacerbate many environmental issues including nutrient loading, aquatic habitat degradation, flooding, channel navigation dredging, dam operation, and stream degradation or aggradation. However, fluvial sediment transport is difficult and expensive to comprehensively characterize because it can vary substantially both temporally and...
Regional streamflow drought forecasting in the Colorado River Basin using Deep Neural Network models
Scott Douglas Hamshaw, Phillip J. Goodling, Konrad Hafen, John C. Hammond, Ryan R. McShane, Roy Sando, Apoorva Ramesh Shastry, Caelan E. Simeone, David Watkins, Elaheh White, Michael Wieczorek
2023, Conference Paper, Proceedings of SEDHYD 2023
Process-based, large-scale (e.g., conterminous United States [CONUS]) hydrologic models have struggled to achieve reliable streamflow drought performance in arid regions and for low-flow periods. Deep learning has recently seen broad implementation in streamflow prediction and forecasting research projects throughout the world with performance often equaling or exceeding that of process-based...
Sediment sources and connectivity linked to hydrologic pathways and geomorphic processes: A conceptual model to specify sediment sources and pathways through space and time
Jong Cho, Diana Karwan, Katherine Skalak, James Pizzuto, Max Huffman
2023, Conference Paper, SEDHYD 2023
Sediment connectivity is a framework for transfer and storage of sediment among different geomorphic compartments across upland and channel network of the catchment sediment cascade. Sediment connectivity and dysconnectivity (i.e., source delivery and storage processes) are linked to the water cycle and hydrologic systems with the associated multiscale interactions with...
Wave-scale observations of sediment resuspension and subsequent transport across a fringing reef flat
Olivia M. Cheriton, Curt D. Storlazzi, Kurt J. Rosenberger, Joshua B. Logan, Andrew W. M. Pomeroy, Mark L. Buckley, Jeff E. Hansen, Ryan J. Lowe
2023, Conference Paper, The proceedings of the coastal sediments 2023
During a 3-month deployment on a broad, fringing reef flat in Moloka’i, Hawai’i, we observed over 28,000 wave-driven resuspension (WDR) events of coarse-grained sediment in order to identify major factors. These events were short-lived (2-11 s) and distinct from the longer-duration patterns of water-column backscatter. The wave-driven transport of WDR...
Hindcast of Hurricane Sally impacts on barrier islands in the Gulf of Mexico
Donya P. Frank-Gilchrist, Davina Passeri, Matthew V. Bilskie
2023, Conference Paper, The proceedings of the coastal sediments 2023
We performed XBeach and ADIRC+SWAN model simulations of Hurricane Sally over Dauphin and Petit Bois Islands off the Alabama-Mississippi coast to evaluate the morphologic response. Simulated water levels compared well with NOAA tide gauge observations to the east of Dauphin Island with a high model skill of 0.9. In addition,...
Evaluating Muskellunge catch-and-release mortality at elevated summer water temperature
Ian Taylor Booth, Kyle J. Hartman, Derek P. Crane, Jeff L. Hansbarger, Jordan Weeks, Josh Henesy, Heather L. Walsh, Jeffrey C. Williams
2023, Transactions of the American Fisheries Society (152) 577-593
Angling for Muskellunge Esox masquinongy has become widespread and increasingly popular. Management strategies for Muskellunge include high minimum harvest lengths (>1016mm), closed seasons, and catch-and-release regulations. Due to these strategies and angler behaviors, up to 97% of Muskellunge...
Synthesis of climate and ecological science to support grassland management priorities in the North Central Region
Christine D. Miller Hesed, Heather M. Yocum, Imtiaz Rangwala, Amy Symstad, Jeff M. Martin, Kevin Ellison, David J. A. Wood, Marissa Ahlering, Katherine J. Chase, Shelley Crausbay, Ana D. Davidson, Julie L. Elliott, Jim Giocomo, David Hoover, Toni Klemm, David A. Lightfoot, Owen P. McKenna, Brian W. Miller, Danika Mosher, R. Chelsea Nagy, Jesse B. Nippert, Jeremy Pittman, Lauren M. Porensky, Jilmarie Stephens, Alexander V. Zale
2023, Open-File Report 2023-1036
Grasslands in the Great Plains are of ecological, economic, and cultural importance in the United States. In response to a need to understand how climate change and variability will impact grassland ecosystems and their management in the 21st century, the U.S. Geological Survey North Central Climate Adaptation Science Center led...
Potential drivers of change in fluxes of nutrients and total suspended solids in the upper White River Basin, Indiana, Water Years 1997–2019
G. F. Koltun, Cassie Hauswald
2023, Fact Sheet 2023-3009
The U.S. Geological Survey and The Nature Conservancy previously collaborated to evaluate changes and trends in the concentrations and flux of nutrients (total phosphorus, as phosphorus; nitrate plus nitrite, as nitrogen; and total Kjeldahl nitrogen, as nitrogen) and total suspended solids (TSS) at three study gages located on the upper...
Trends in environmental, anthropogenic, and water-quality characteristics in the upper White River Basin, Indiana
G. F. Koltun
2023, Scientific Investigations Report 2023-5025
The U.S. Geological Survey (USGS), in cooperation with The Nature Conservancy, undertook a study to update and extend results from a previous study (Koltun, 2019, https://doi.org/10.3133/sir20195119), using data from 3 additional years and newer estimation methods. Koltun (2019) assessed trends in streamflow, precipitation, and estimated annual mean concentrations...
Evaluation of hydrologic processes in the eastern Snake River Plain aquifer using uranium and strontium isotopes, Idaho National Laboratory, eastern Idaho
Gordon W. Rattray, James B. Paces
2023, Professional Paper 1837-D
Waste constituents discharged to the eastern Snake River Plain aquifer at the U.S. Department of Energy (DOE) Idaho National Laboratory (INL) pose risks to the water quality of the aquifer. To understand these risks, the U.S. Geological Survey, in cooperation with the DOE, is conducting geochemical studies to better understand...
Determining three-dimensional hydrologic processes in the eastern Snake River Plain aquifer using geochemical mass-balance modeling, Idaho National Laboratory, eastern Idaho, with contributions by Treinen, K.C.
Gordon W. Rattray
2023, Professional Paper 1837-C
Waste constituents discharged to the eastern Snake River Plain aquifer at the U.S. Department of Energy (DOE) Idaho National Laboratory (INL) pose risks to the water quality of the aquifer. To understand these risks, the U.S. Geological Survey, in cooperation with the DOE, used geochemical mass-balance modeling to identify three-dimensional...
Assessment of riparian vegetation patterns and change downstream from Glen Canyon Dam from 2014 to 2019
Emily C. Palmquist, Bradley J. Butterfield, Barbara E. Ralston
2023, Open-File Report 2023-1026
Changes in riparian vegetation cover and composition occur in relation to flow regime, geomorphic template, and climate, and can have cascading effects on aquatic and terrestrial ecosystems. Tracking such changes over time is therefore an important part of monitoring the condition and trajectory of riparian ecosystems. Maintaining diverse, self-sustaining riparian...
Bivalve effects on the food web supporting delta smelt—A long-term study of bivalve recruitment, biomass, and grazing rate patterns with varying freshwater outflow
Emily L. Zierdt Smith, Kelly H. Shrader, Janet K. Thompson, Francis Parchaso, Karen Gehrts, Elizabeth Wells
2023, Open-File Report 2022-1101
Phytoplankton are an important and limiting food source in the Sacramento-San Joaquin Delta and San Francisco Bay in California. Decreasing phytoplankton biomass is one possible factor for the pelagic organism decline and the decline of the protected Hypomesus transpacificus (delta smelt). Bivalves Corbicula fluminea and Potamocorbula amurensis (hereafter C. fluminea...
Monitoring of wave, current, and sediment dynamics along the Chincoteague living shoreline, Virginia
Hongqing Wang, Q. Chen, Nan Wang, William D. Capurso, L.M. Niemoczynski, Ling Zhu, Gregg A. Snedden, Kevin S. Holcomb, Bowdoin W. Lusk, Carol W. Wilson, Sean R. Cornell
2023, Open-File Report 2023-1020
Nature-based features, also called living shorelines, are increasingly applied in coastal protection and restoration. However, the processes and mechanisms (feedbacks and interactions) of wave attenuation, current velocity change, and sediment deposition and erosion along the living shoreline remain unclear, thus limiting the adaptive management of living shoreline restoration projects for...
Data integration reveals dynamic and systematic patterns of breeding habitat use by a threatened shorebird
Kristen S. Ellis, Michael J. Anteau, Garrett J. MacDonald, Rose J. Swift, Megan M. Ring, Dustin L. Toy, Mark H. Sherfy, Max Post van der Burg
2023, Scientific Reports (13)
Incorporating species distributions into conservation planning has traditionally involved long-term representations of habitat use where temporal variation is averaged to reveal habitats that are most suitable across time. Advances in remote sensing and analytical tools have allowed for the integration of dynamic processes into species distribution...
Strontium isotope chronostratigraphic age of a sirenian fossil site on Santa Rosa Island, Channel Islands National Park, California
James B. Paces, Scott A. Minor, Kevin M. Schmidt, Jonathan Hoffman
2023, Scientific Investigations Report 2023-5026
Fossils in the order Sirenia (family Dugongidae) from Santa Rosa Island, part of Channel Islands National Park in southern California, provide rare temporal and spatial links between earlier and later evolutionary forms of dugongids, and add information about their dispersal into the northeastern Pacific region. Marine sedimentary rocks containing these...
Sediment and nutrient deposition over a reconnected floodplain during large-scale river diversions, the Bonnet Carré spillway in 2011, 2016, and 2019
Daniel Kroes, Gregory E. Noe, David Ramirez, Brian Vosburg
2023, Conference Paper, Proceedings of SEDHYD2023
In hopes of reversing or slowing the decline of the river delta, water diversions have been built and planned, and natural diversions have formed and been allowed to develop along the lower Mississippi River. In addition to the possibility of building land, these diversions allow for the storage of nutrients...
National-scale assessment of total gaseous mercury isotopes across the United States
Michael T. Tate, Sarah E. Janssen, Ryan F. Lepak, Laura Elizabeth Flucke, David P. Krabbenhoft
2023, JGR Atmospheres (128)
With the 2011 promulgation of the Mercury and Air Toxics Standards by the U.S. Environmental Protection Agency, and the successful negotiation by the United Nations Environment Program of the Minamata Convention, emissions of mercury (Hg) have declined in the United States. While the declines in atmospheric Hg...
Value-aligned planning objectives for restoring North Carolina aquatic resources
Ana Maria Garcia, Mitchell J. Eaton, Georgina M. Sanchez, Jennifer L. Keisman, Kirsten Ullman, James Blackwell
2023, Open-File Report 2022-1058
Rapid population growth and development in the southeastern United States have resulted in substantial impairment to freshwater aquatic ecosystems. National or regional restoration policies strive to address impaired ecosystems but can suffer from inconsistent and opaque processes. The Clean Water Act, for example, establishes reallocation mechanisms to transfer ecosystem services...
Model-based assessment and mapping of total phosphorus enrichment in rivers with sparse reference data
Peter C. Esselman, R Jan Stevenson
2023, Science of the Total Environment (884)
Water nutrient management efforts are frequently coordinated across thousands of water bodies, leading to a need for spatially extensive information to facilitate decision making. Here we explore potential applications of a machine learning model of river low-flow total phosphorus (TP) concentrations to support landscape...
Evaluating regional length limits in freshwater fisheries
Andrew C. Shamaskin, Michael E. Colvin, Leandro E. Miranda
2023, Canadian Journal Fisheries and Aquatic Sciences (80)
Length limits are often used in recreational fisheries management to prevent overharvest and manipulate fish size distributions. These regulations are ideally customized to meet water-specific stock dynamics and fishery objectives. However, in districts with numerous discrete waters, fisheries are commonly managed with a universal regional regulation. Evaluating...
Climate change risks to freshwater subsistence fisheries in Arctic Alaska: Insights and uncertainty from broad whitefish Coregonus nasus
Jason C. Leppi, Daniel J. Rinella, Mark S. Wipfli, Anna K. Liljedahl, Andrew C. Seitz, Jeffrey A. Falke
2023, Fisheries Magazine (48) 295-306
Arctic freshwater ecosystems and fish populations are largely shaped by seasonal and long-term watershed hydrology. In this paper, we hypothesize how changing air temperature and precipitation will alter freeze and thaw processes, hydrology, and instream habitat to assess potential indirect effects, such as the change...