The ten steps to responsible Inland fisheries in practice: Reflections from diverse regional case studies around the globe
Steven J. Cooke, Elizabeth A. Nyboer, Abigail Bennett, Abigail J. Lynch, Dana M. Infante, Ian G. Cowx, T. Douglas Beard Jr., Devin Bartley, Craig Paukert, Andrea J. Reid, Simon Funge-Smith, Edith Gondwe, Emmanuel Kaunda, John D. Koehn, Nicholas J. Souter, Gretchen L. Stokes, Leandro Castello, Nancy J. Leonard, Christian Skov, Soren Berg, William W. Taylor
2021, Reviews in Fish Biology and Fisheries (31) 843-877
Inland fisheries make substantial contributions to food security and livelihoods locally, regionally, and globally but their conservation and management have been largely overlooked by policy makers. In an effort to remedy this limited recognition, a cross-sectoral community of scientists, practitioners, and policy...
Optimization of the Idaho National Laboratory water-quality aquifer monitoring network, southeastern Idaho
Jason C. Fisher, Roy C. Bartholomay, Gordon W. Rattray, Neil V. Maimer
2021, Scientific Investigations Report 2021-5031
Long-term monitoring of water-quality data collected from wells at the Idaho National Laboratory (INL) has provided essential information for delineating the movement of radiochemical and chemical wastes in the eastern Snake River Plain aquifer, southeastern Idaho. Since 1949, the U.S. Geological Survey, in cooperation with the U.S. Department of...
Groundwater and surface-water data from the C-aquifer monitoring program, Northeastern Arizona, 2012–2019
Casey J.R. Jones, Michael J. Robinson
2021, Open-File Report 2021-1051
The Coconino aquifer (C aquifer) is a regionally extensive multiple-aquifer system supplying water for municipal, agricultural, and industrial use in northeastern Arizona, northwestern New Mexico, and southeastern Utah. This report focuses on the C aquifer in the arid to semi-arid area between St. Johns, Ariz., and Flagstaff, Ariz., along the...
Event scale relationships of DOC and TDN fluxes in throughfall and stemflow diverge from stream exports in a forested catchment
Kevin A. Ryan, Thomas Adler, Ann T. Chalmers, Julia Perdrial, James B. Shanley, Aron Stubbins
2021, Journal of Geophysical Research: Biogeosciences (126)
Aquatic fluxes of carbon and nutrients link terrestrial and aquatic ecosystems. Within forests, storm events drive both the delivery of carbon and nitrogen to the forest floor and the export of these solutes from the land via streams. To increase understanding of the relationships between hydrologic event character and the...
Long-term year-round observations of magmatic CO2 emissions on Mammoth Mountain, California, USA
Jennifer L. Lewicki
2021, Journal of Volcanology and Geothermal Research (418)
Diffuse emission of magmatic CO2 is one of the main indicators of volcanic unrest at Mammoth Mountain, but the presence of deep seasonal snowpack at the site has hindered year-round CO2 flux observations. A permanent eddy covariance station was established at the largest area of diffuse CO2 degassing...
A reactive transport approach to modeling cave seepage water chemistry I: Carbon isotope transformations
Jennifer Druhan, Corey Lawrence, Aaron Covey, Max Giannetta, Jessica Oster
2021, Geochimica et Cosmochimica Acta (311) 374-400
The majority of Critical Zone research has emphasized silicate lithologies, which are typified by relatively slow rates of reactivity and incongruent weathering. However, the relatively simpler weathering of carbonate-dominated lithology can result in secondary mineral deposits, such as speleothems, which provide a long-term archive for Critical Zone processes. In particular,...
Urbanization impacts on evapotranspiration across various spatio-temporal scales
Amirhossein Mazrooei, Meredith Reitz, Dingbao Wang, A. Sankarasubramanian
2021, Earth's Future (9)
Urbanization has been shown to locally increase the nighttime temperatures creating urban heat islands, which partly arise due to evapotranspiration (ET) reduction. It is unclear how the direction and magnitude of the change in local ET due to urbanization varies globally across different climatic regimes. This knowledge...
A reactive transport approach to modeling cave seepage water chemistry II: Elemental signatures
Jessica Oster, Aaron Covey, Corey Lawrence, Max Giannetta, Jennifer Druhan
2021, Geochimica et Cosmochimica Acta (311) 353-373
Karst systems are useful for examining spatial and temporal variability in Critical Zone processes because they provide a window into the subsurface where waters have interacted with vegetation, soils, regolith, and bedrock across a range of length and timescales. These hydrologic pathways frequently include the precipitation of speleothems, which provide long-term archives of climate and...
Influence of invasive submerged aquatic vegetation (E. densa) on currents and sediment transport in a freshwater tidal system
Jessica R. Lacy, Madeline R. Foster-Martinez, Rachel M. Allen, Judith Z. Drexler
2021, Water Resources Research (57)
We present a field study combining measurements of vegetation density, vegetative drag, and reduction of suspended-sediment concentration (SSC) within patches of the invasive submerged aquatic plant Egeria densa. Our study was motivated by concern that sediment trapping by E. densa, which has proliferated in the Sacramento–San Joaquin Delta, is impacting marsh accretion...
Spatial and temporal distribution of radio-tagged Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Clear Lake Reservoir and associated spawning tributaries, Northern California, 2015–17
Nathan Banet, David A. Hewitt, Amari Dolan-Caret, Alta C. Harris
2021, Open-File Report 2021-1061
Executive SummaryData from a multi-year radio telemetry study were used to assess seasonal distribution patterns for two long-lived, federally endangered catostomids across substantially different water conditions in Clear Lake Reservoir, northern California. Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers, two species endemic to the Klamath Basin, were...
Arizona and Landsat
Water Resources Division, U.S. Geological Survey
2021, Fact Sheet 2021-3039
Arizona is a land of massive grandeur, deep gorges, lofty mountains, immense plains, and elevated mesas—and, without question, its crown jewel is the Grand Canyon. The spectacular canyon, one of the seven natural wonders of the world, was created when the Colorado River carved a channel through northern Arizona, revealing...
Responses of soil extracellular enzyme activities and bacterial community composition to seasonal stages of drought in a semiarid grassland
Wenlan Gao, Sasha C. Reed, Seth M. Munson, Yichao Rui, Wenyuan Fan, Zhenzhen Zheng, Linfeng Li, Rongxiao Che, Kai Xue, Jianqing Du, Xiaoyong Cui, Yanfen Wang, Yanbin Hao
2021, Geoderma (401)
Extreme drought can strongly impact belowground communities and biogeochemical processes, including soil microbial community composition and extracellular enzyme activities (EEAs), which are considered key agents in ecosystem carbon (C) and nutrient cycling. However, our understanding of how seasonal timing of drought...
Gap-filling eddy covariance methane fluxes: Comparison of machine learning model predictions and uncertainties at FLUXNET-CH4 wetlands
Jeremy Irvin, Sharon Zhou, Gavin McNicol, Fred Lu, Vincent Liu, Etienne Fluet-Chouinard, Zutao Ouyang, Sara Helen Knox, Antje Lucas-Moffat, Carlo Trotta, Dario Papale, Domenico Vitale, Ivan Mammarella, Pavel Alekseychik, Mika Aurela, Anand Avati, Dennis Baldocchi, Sheel Bansal, Gil Bohrer, David I. Campbell, Jiquan Chen, Housen Chu, Higo J. Dalmagro, Kyle B. Delwiche, Ankur R. Desai, Eugenie S. Euskirchen, Sarah Feron, Mathias Goeckede, Martin Heimann, Manuel Helbig, Carole Helfter, Kyle S. Hemes, Takashi Hirano, Hiroki Iwata, Gerald Jurasinski, Aram Kalhori, Andrew Kondrich, Derrick Y. F. Lai, Annalea Lohila, Avni Malholtra, Lutz Merbold, Bhaskar Mitra, Andrew Ng, Mats B. Nilsson, Asko Noormets, Matthias Peichl, A. Camilo Rey-Sanchez, Andrew D. Richardson, Benjamin R. K. Runkle, Karina V. R. Schafer, Oliver Sonnentag, Ellen Stuart-Haëntjens, Cove Sturtevant, Masahito Ueyama, Alex C. Valach, Rodrigo Vargas, George L. Vourlitis, Eric Ward, Guan Xhuan Wong, Donatella Zona, Ma. Carmelita R. Alberto, David P. Billesbach, Gerardo Celis, Han Dolman, Thomas Friborg, Kathrin Fuchs, Sebastien Gogo, Mangaliso J. Gondwe, Jordan P. Goodrich, Pia Gottschalk, Lukas Hortnagl, Adrien Jacotot, Franziska Koebsch, Kuno Kasak, Regine Maier, Timothy H. Morin, Eiko Nemitz, Walter C. Oechel, Patricia Y. Oikawa, Keisuke Ono, Torsten Sachs, Ayaka Sakabe, Edward A. Schuur, Robert Shortt, Ryan C. Sullivan, Daphne J. Szutu, Eeva-Stiina Tuittila, Andrej Varlagin, Joseph G. Verfaillie, Christian Wille, Lisamarie Windham-Myers, Benjamin Poulter, Robert B. Jackson
2021, Agricultural and Forest Meteorology (308–309)
Time series of wetland methane fluxes measured by eddy covariance require gap-filling to estimate daily, seasonal, and annual emissions. Gap-filling methane fluxes is challenging because of high variability and complex responses to multiple drivers. To date, there is no widely established gap-filling standard for wetland methane fluxes, with regards both...
Instruments, methods, rationale, and derived data used to quantify and compare the trapping efficiencies of four types of pressure-difference bedload samplers
John R. Gray, Gregory E. Schwarz, David J. Dean, Jonathan A. Czuba, Joel T. Groten
2021, Open-File Report 2021-1064
Bedload and ancillary data were collected to calculate and compare the bedload trapping efficiencies of four types of pressure-difference bedload samplers as part of episodic, sediment-recirculating flume experiments at the St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, in January–March 2006. The bedload-sampler experiments, which were conceived, organized, and led...
Occurrence and distribution of mercury in streams and reservoirs in the Triangle Area of North Carolina, July 2007–June 2009
Anna M. McKee, Sharon Fitzgerald, Mary J. Giorgino
2021, Scientific Investigations Report 2021-5027
During the time period 2001–2006, the U.S. Geological Survey reported mercury-concentration measurements that exceeded the North Carolina water-quality criterion (NCWQC) of 0.012 microgram per liter for total recoverable mercury in streams and reservoirs across the Triangle Area of North Carolina. Mercury data were sparse, however, generally consisting of only one...
Earlier winter/spring runoff and snowmelt during warmer winters lead to lower summer chlorophyll-a in north temperate lakes
Allison R. Hrycik, Peter D. F. Isles, Rita Adrian, Matthew Albright, Linda C. Bacon, Stella A. Berger, Ruchi Bhattacharya, Hans-Peter Grossart, Josef Hejzlar, Amy L. Hetherington, Lesley B. Knoll, Alo Laas, Cory P. McDonald, Kellie Merrell, Jens C. Nejstgaard, Kirsten Nelson, Peeter Noges, Andrew M. Paterson, Rachel M. Pilla, Dale M. Robertson, Lars G. Rudstam, James A. Rusak, Steven Sadro, Eugene A. Silow, Jason D. Stockwell, Huaxia Yao, Kiyoko Yokota, Donald C. Pierson
2021, Global Change Biology (27) 4615-4629
Winter conditions, such as ice cover and snow accumulation, are changing rapidly at northern latitudes and can have important implications for lake processes. For example, snowmelt in the watershed—a defining feature of lake hydrology because it delivers a large portion of annual nutrient inputs—is becoming earlier. Consequently, earlier and a...
Hydraulic modeling at selected dam-removal and culvert-retrofit sites in the northeastern United States
Scott A. Olson, Caelan E. Simeone
2021, Scientific Investigations Report 2021-5056
Aquatic connectivity projects, such as removing dams and modifying culverts, have substantial benefits. The restoration of natural flow conditions improves water quality, sediment transport, aquatic and riparian habitat, and fish passage. These projects can also decrease hazards faced by communities by lowering water-surface elevations of flood waters and by removing...
Preliminary assessment of the wave generating potential from landslides at Barry Arm, Prince William Sound, Alaska
Katherine R. Barnhart, Ryan P. Jones, David L. George, Jeffrey A. Coe, Dennis M. Staley
2021, Open-File Report 2021-1071
We simulated the concurrent rapid motion of landslides on an unstable slope at Barry Arm, Alaska. Movement of landslides into the adjacent fjord displaced fjord water and generated a tsunami, which propagated out of Barry Arm. Rather than assuming an initial sea surface height, velocity, and location for the tsunami,...
Investigation of scale-dependent groundwater/surface-water exchange in rivers by gradient self-potential logging: Numerical modeling and field experiments
Scott Ikard, Martin A. Briggs, John W. Lane
2021, Journal of Environmental and Engineering Geophysics (26)
Exchanges of groundwater and surface-water are fundamental to a wide range of water-supply and water-quality management issues but challenging to map beyond the reach scale. Waterborne gradient self-potential (SP) measurements are directly sensitive to water flow through riverbed sediments and can be used to infer exchange locations, direction (gain versus...
Distributed memory parallel groundwater modeling for the Netherlands Hydrological Instrument
Jarno Verkaik, Joseph D. Hughes, van Walsum, G.H.P. Oude Essink, H.X. Lin, M.F.P. Bierkens
2021, Environmental Software & Modelling (143)
Worldwide, billions of people rely on fresh groundwater reserves for their domestic, agricultural and industrial water use. Extreme droughts and excessive groundwater pumping put pressure on water authorities in maintaining sustainable water usage. High-resolution integrated models are valuable assets in supporting them. The Netherlands Hydrological Instrument (NHI) provides the Dutch...
Factors influencing distributional shifts and abundance at the range core of a climate-sensitive mammal
Peter D Billman, Erik A. Beever, Dave B. McWethy, Lindsey Thurman, Kenny C Wilson
2021, Global Change Biology (27) 4498-4515
Species are frequently responding to contemporary climate change by shifting to higher elevations and poleward to track suitable climate space. However, depending on local conditions and species’ sensitivity, the nature of these shifts can be highly variable and difficult to predict. Here, we examine how the...
Blue waters, green bottoms: Benthic filamentous algal blooms are an emerging threat to clear lakes worldwide
Yvonne Vadeboncoeur, Marianne V. Moore, Simon D. Stewart, Sudeep Chandra, Karen Atkins, Jill S. Baron, Keith Bouma-Gregson, Soren Brothers, Stephen Francoeur, Laurel Genzoli, Scott N. Higgins, Sabine Hilt, Leon R. Katona, David Kelly, Isabella Oleksy, Ted Ozersky, Mary Powel, Derek Roberts, Oleg Timoshkin, Flavia Tromboni, M. Jake Vander Zanden, Ekaterina Volkova, Sean Waters, Susanna A. Wood, Masumi Yamamuro
2021, BioScience (71) 1011-1027
Nearshore (littoral) habitats of clear lakes with high water quality are increasingly experiencing unexplained proliferations of filamentous algae that grow on submerged surfaces. These filamentous algal blooms (FABs) are sometimes associated with nutrient pollution in groundwater, but complex changes in climate, nutrient transport, lake hydrodynamics, and food web structure...
Temperature variation and host immunity regulate viral persistence in a salmonid host
David J. Paez, Rachel L. Powers, Peng Jia, Natalia Ballesteros, Gael Kurath, Kerry A. Naish, Maureen K. Purcell
2021, Pathogens (10)
Environmental variation has important effects on host–pathogen interactions, affecting large-scale ecological processes such as the severity and frequency of epidemics. However, less is known about how the environment interacts with host immunity to modulate virus fitness within hosts. Here, we studied the interaction between host immune responses and water temperature...
USGS Chesapeake Science Strategy 2021-2025
Kenneth Hyer, Scott W. Phillips
2021, Fact Sheet 2021-3037
The Chesapeake Bay ecosystem is a national treasure that provides almost $100 billion annually of goods and services. The Chesapeake Bay Program (CBP), is one of the largest federal-state restoration partnerships in the United States and is underpinned by rigorous science. The U.S. Geological Survey (USGS) has a pivotal role...
Sea otter foraging behavior
Randall W. Davis, James L. Bodkin
2021, Book chapter, Ethology and behavioral ecology of sea otters and polar bears
Sea otters are marine specialists but diet generalists, which feed primarily on benthic mega-invertebrates (i.e., body dimension >1 cm). They locate and capture epibenthic and infaunal prey with their forepaws by relying on vision and tactile sensitivity during short-duration dives (generally <2 min) in shallow waters (routine dives <30 m and maximum dive depth...
