Effects of tidally varying river flow on entrainment of juvenile salmon into Sutter and Steamboat Sloughs
Jason G. Romine, Russell Perry, Paul Stumpner, Aaron R. Blake, Jon R. Burau
2021, San Francisco Estuary and Watershed Science (19) 1-17
Survival of juvenile salmonids in the Sacramento–San Joaquin Delta (Delta) varies by migration route, and thus the proportion of fish that use each route affects overall survival through the Delta. Understanding factors that drive routing at channel junctions along the Sacramento River...
Hippopotamus movements structure the spatiotemporal dynamics of an active anthrax outbreak
Keenan Stears, Melissa H. Schmitt, Wendy Christine Turner, Douglas J. McCauley, Epaphras A. Muse, Halima Kiwango, Daniel Matheyo, Benezeth M. Mutayoba
2021, Ecosphere (12)
Globally, anthrax outbreaks pose a serious threat to people, livestock, and wildlife. Furthermore, environmental change can exacerbate these outbreak dynamics by altering the host–pathogen relationship. However, little is known about how the quantitative spatial dynamics of host movement and environmental change may affect the spread of Bacillus anthracis, the causative agent...
Spatial Gaussian processes improve multi-species occupancy models when range boundaries are uncertain and nonoverlapping
Wilson Wright, Kathryn M. Irvine, Tom Rodhouse, Andrea R. Litt
2021, Ecology and Evolution (11) 8516-8527
Species distribution models enable practitioners to analyze large datasets of encounter records and make predictions about species occurrence at unsurveyed locations. In omnibus surveys that record data on multiple species simultaneously, species ranges are often nonoverlapping and misaligned with the administrative unit defining the spatial domain of interest (e.g.,...
Use of the MODFLOW 6 water mover package to represent natural and managed hydrologic connections
Eric D. Morway, Christian D. Langevin, Joseph D. Hughes
2021, Groundwater (59) 913-924
The latest release of MODFLOW 6, the current core version of the MODFLOW groundwater modeling software, debuted a new package dubbed the “mover” (MVR). Using a generalized approach, MVR facilitates the transfer of water among any arbitrary combination of simulated features (i.e., pumping wells, stream, drains,...
Advancing estuarine ecological forecasts: Seasonal hypoxia in Chesapeake Bay
Donald Scavia, Isabella Bertani, Jeremy M. Testa, Aaron J. Bever, Joel D. Blomquist, Marjorie A. M. Friedrichs, Lewis C. Linker, Bruce Michael, Rebecca Murphy, Gary W. Shenk
2021, Ecological Applications (31)
Ecological forecasts are quantitative tools that can guide ecosystem management. The coemergence of extensive environmental monitoring and quantitative frameworks allows for widespread development and continued improvement of ecological forecasting systems. We use a relatively simple estuarine hypoxia model to demonstrate advances in addressing some of the...
Effects of climate and land-use change on thermal springs recharge—A system-based coupled surface-water and groundwater-flow model for Hot Springs National Park, Arkansas
Rheannon M. Hart, Scott J. Ikard, Phillip D. Hays, Brian R. Clark
2021, Scientific Investigations Report 2021-5045
A three-dimensional hydrogeologic framework of the Hot Springs anticlinorium beneath Hot Springs National Park, Arkansas, was constructed to represent the complex hydrogeology of the park and surrounding areas to depths exceeding 9,000 feet below ground surface. The framework, composed of 6 rock formations and 1 vertical fault emplaced beneath the...
Response of fish assemblages to restoration of rapids habitat in a Great Lakes connecting channel
A. Molina-Moctezuma, N. Godby, K. Kapuscinski, Edward F. Roseman, K. Skubik, A. Moerke
2021, Journal of Great Lakes Research (47) 1182-1191
Rapids habitats are critical spawning and nursery grounds for multiple Laurentian Great Lakes fishes of ecological importance such as lake sturgeon, walleye, and salmonids. However, river modifications have destroyed important rapids habitat in connecting channels by modifying flow profiles and removing large quantities of cobble and gravel that are preferred...
Integrating thermal infrared stream temperature imagery and spatial stream network models to understand natural spatial thermal variability in streams
Matthew R. Fuller, Joseph L. Ebersole, Naomi Detenbeck, Rochelle Labisoa, P.T. Leinenbach, Christian E. Torgersen
2021, Journal of Thermal Biology (100)
Under a warmer future climate, thermal refuges could facilitate the persistence of species relying on cold-water habitat. Often these refuges are small and easily missed or smoothed out by averaging in models. Thermal infrared (TIR) imagery can provide empirical water surface...
Recency of faulting and subsurface architecture of the San Diego Bay pull-apart basin, California, USA
Drake Moore Singleton, Jillian M. Maloney, Daniel S. Brothers, Shannon Klotsko, Neal W. Driscoll, Thomas K. Rockwell
2021, Frontiers in Earth Science (9)
In southern California, plate boundary motion between the North American and Pacific plates is distributed across several sub-parallel fault systems. The offshore faults of the California Continental Borderland (CCB) are thought to accommodate ~10-15% of the total plate boundary motion, but the exact distribution of slip and the mechanics of...
Magnetotelluric sampling and geoelectric hazard estimation: Are national-scale surveys sufficient?
Benjamin Scott Murphy, Greg M. Lucas, Jeffrey J. Love, Anna Kelbert, Paul A. Bedrosian, E. Joshua Rigler
2021, AGU Space Weather (19)
At present, the most reliable information for inferring storm-time ground electric fields along electrical transmission lines comes from coarsely sampled, national-scale magnetotelluric (MT) data sets, such as that provided by the EarthScope USArray program. An underlying assumption in the use of such data is that they adequately sample the spatial...
The PLUM earthquake early warning algorithm: A retrospective case study of West Coast, USA, data
Debi Kilb, Julian J Bunn, Jessie Kate Saunders, Elizabeth S. Cochran, Sarah E. Minson, Annemarie S. Baltay Sundstrom, Colin T O’Rourke, Mitsuyuki Hoshiba, Yuki Kodera
2021, JGR Solid Earth (126)
The PLUM (Propagation of Local Undamped Motion) earthquake early warning (EEW) algorithm differs from typical source-based EEW algorithms as it predicts shaking directly from observed shaking without first deriving earthquake source information (e.g., magnitude and epicenter). Here, we determine optimal PLUM event detection thresholds for U.S. West Coast earthquakes using...
Abundance of Gulf Coast Waterdogs (Necturus beyeri) along Bayou Lacombe, Saint Tammany Parish, Louisiana
Brad Glorioso, Hardin Waddle, Lindy J. Muse, Sidney T Godfrey
2021, Journal of Herpetology (55) 160-166
Few ecological studies have been conducted on Gulf Coast Waterdogs (Necturus beyeri), and published studies have focused on relatively small stream sections of 125 m to 1.75 km. In 2015, we sampled 25 sites along a 13.4-km stretch of Bayou Lacombe (Saint Tammany Parish, Louisiana,...
A review of sand detachment in modern deep marine environments: Analogues for upslope stratigraphic traps
John W. Counts, Lawrence Amy, Aggeliki Georgiopoulou, Peter Haughton
2021, Marine and Petroleum Geology (132)
Isolated, detached sands provide opportunities for large-volume stratigraphic traps in many deepwater petroleum systems. Here we provide a review of the different types of sandbody detachments based on published data from the modern-day seafloor and recent (generally Quaternary-present), shallow-buried strata. Detachment mechanisms...
Caution is warranted when using animal space-use and movement to infer behavioral states
Frances E. Buderman, Tess M. Gingery, Duane R. Diefenbach, Laura C. Gigliotti, Danielle Begley-Miller, Marc E. McDill, Bret D. Wallingford, Christopher S. Rosenberry, Patrick J. Drohan
2021, Movement Ecology (9)
BackgroundIdentifying the behavioral state for wild animals that can’t be directly observed is of growing interest to the ecological community. Advances in telemetry technology and statistical methodologies allow researchers to use space-use and movement metrics to infer the underlying, latent, behavioral state of an animal without direct observations....
Estimating Piacenzian sea surface temperature using an alkenone-calibrated transfer function
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley
2021, Scientific Investigations Report 2021-5051
Stationarity of environmental preferences is a primary assumption required for any paleoenvironmental reconstruction using fossil materials based upon calibration to modern organisms. Confidence in this assumption decreases the further back in time one goes, and the validity of the assumption that species temperature tolerances have not changed over time has...
A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya
D. H. Shugar, Mylene Jacquemart, D. Shean, S. Bhushan, K. Upadhyay, A. Sattar, W. Schwanghart, Sara K. McBride, M. Van Wyk de Vries, M. Mergili, A. Emmer, C. Deschamps-Berger, M. McDonnell, R. Bhambri, S. Allen, E. Berthier, J.L. Carrivick, J.J. Clague, M. Dokukin, S.A. Dunning, Herbert Frey, S. Gascoin, U. K. Haritashya, C. Huggel, A. Kaab, J.S. Kargel, J.L. Kavanaugh, P. Lacroix, D. N. Petley, S. Rupper, M.F. Azam, S.J. Cook, A.P. Dimri, M. Eriksson, D. Farinotti, J. Fiddes, K.R. Gnyawali, S. Harrison, M.K. Jha, M. Koppes, S. Kumar, S. Leiness, U. Majeed, S. Mai, A. Muhuri, J. Noetzli, F. Paul, I. Rashid, K. Sain, J. Steiner, F. Ugalde, C.S. Watson, M.J. Westoby
2021, Science
On 7 Feb 2021, a catastrophic mass flow descended the Ronti Gad, Rishiganga, and Dhauliganga valleys in Chamoli, Uttarakhand, India, causing widespread devastation and severely damaging two hydropower projects. Over 200 people were killed or are missing. Our analysis of satellite imagery, seismic records, numerical model...
A near-real-time model for estimating probability of road obstruction due to earthquake-triggered landslides
B.H. Wilson, Kate E. Allstadt, Eric M. Thompson
2021, Earthquake Spectra (37) 2400-2418
Coseismic landslides are a major source of transportation disruption in mountainous areas, but few approaches exist for rapidly estimating impacts to road networks. We develop a model that links the U.S. Geological Survey (USGS) near-real-time earthquake-triggered landslide hazard model with Open Street Map (OSM) road network data...
Age-structured Jolly-Seber model expands inference and improves parameter estimation from capture-recapture data
Nathan J. Hostetter, Nicholas J. Lunn, Evan S. Richardson, Eric V. Regehr, Sarah J. Converse
2021, PLoS ONE
Understanding the influence of individual attributes on demographic processes is a key objective of wildlife population studies. Capture-recapture and age data are commonly collected to investigate hypotheses about survival, reproduction, and viability. We present a novel age-structured Jolly-Seber model that incorporates age and capture-recapture data to provide comprehensive information on...
Biotic vs abiotic controls on temporal sensitivity of primary production to precipitation across North American drylands
Andrew J Felton, Robert K Shriver, John B. Bradford, Katharine N. Suding, Brady W Allred, Peter B. Adler
2021, New Phytologist (231) 2150-2161
Dryland net primary productivity (NPP) is sensitive to temporal variation in precipitation (PPT), but the magnitude of this ‘temporal sensitivity’ varies spatially. Hypotheses for spatial variation in temporal sensitivity have often emphasized abiotic factors, such as moisture limitation, while overlooking biotic factors, such as vegetation structure.We tested these hypotheses...
Integrated hydrology and operations modeling to evaluate climate change impacts in an agricultural valley irrigated with snowmelt runoff
Wesley Kitlasten, Eric D. Morway, Richard G. Niswonger, Murphy Gardner, Jeremy T. White, Enrique Triana, David J. Selkowitz
2021, Water Resources Research (57)
Applying models to developed agricultural regions remains a difficult problem because there are no existing modeling codes that represent both the complex physics of the hydrology and anthropogenic manipulations to water distribution and consumption. We apply an integrated groundwater – surface water and hydrologic river operations model...
Cape Romain partnership for coastal protection
Mitchell J. Eaton, Fred A. Johnson, Jessica Mikels-Carrasco, David J. Case, Julien Martin, Bradley Stith, Simeon Yurek, Bradley Udell, Laura Villegas, Laura Taylor, Zulquarnain Haider, Hadi Charkhgard, Changhyun Kwon
2021, Open-File Report 2021-1021
This final report summarizes activities, outcomes, and lessons learned from a 3-year project titled “Climate Change Adaptation for Coastal National Wildlife Refuges” with the Cape Romain National Wildlife Refuge (NWR) and local partners in the surrounding South Carolina Lowcountry. The Lowcountry is classified as the 10-county area encompassing the coastal...
Fluvial Egg Drift Simulator (FluEgg) user’s manual
Marian M. Domanski, Jessica Z. LeRoy, Michael Berutti, P. Ryan Jackson
2021, Open-File Report 2021-1052
The Fluvial Egg Drift Simulator (FluEgg) was developed to simulate the transport and dispersion of invasive carp eggs and larvae in a river. FluEgg currently (2020) supports modeling of bighead carp (Hypophthalmichthys nobilis), silver carp (H. molitrix), and grass carp (Ctenopharyngodon idella), with the planned addition of black carp (Mylopharyngodon...
Using systems thinking to inform management of imperiled species: A case study with sea turtles
Ian Silver-Gorges, Simona A. Ceriani, Matthew Ware, Megan Lamb, Margaret Lamont, Janice Becker, Raymond Carthy, Chris Matechik, Joseph C. Mitchell, Raya Pruner, Mike Reynolds, Bradley Smith, Caitlyn Snyder, Mariana M. P. B. Fuentes
2021, Biological Conservation (260)
Management of imperiled species facing spatiotemporally dynamic threats is difficult. Systems thinking can inform their management by quantifying the impacts that they face. We apply systems thinking to the Northern Gulf of Mexico (NGM) loggerhead (Caretta caretta) Recovery Unit (RU), one of the smallest subpopulations of loggerheads nesting in the USA. We...
Riparian forest cover modulates phosphorus storage and nitrogen cycling in agricultural stream sediments
Rebecca M. Kreiling, Lynn A. Bartsch, Patrik Mathis Perner, Enrika Hlavacek, Victoria Christensen
2021, Environmental Management (68) 279-293
Watershed land cover affects in-stream water quality and sediment nutrient dynamics. The presence of natural land cover in the riparian zone can reduce the negative effects of agricultural land use on water quality; however, literature evaluating the effects of natural riparian land cover on stream sediment nutrient dynamics is scarce....
Developing a strategy for the national coordinated soil moisture monitoring network
Micheal Cosh, Todd Caldwell, Bruce M. Baker, John D. Bolton, Nathan Edwards, Peter Goble, Heather Hofman, Tyson Ochsner, Steven Quiring, Charles W. Schalk, Marina Skumanich, Mark Svoboda, Molly Woloszyn
2021, Vadose Zone Journal (20)
Soil moisture is a critical land surface variable, affecting a wide variety of climatological, agricultural, and hydrological processes. Determining the current soil moisture status is possible via a variety of methods, including in situ monitoring, remote sensing, and numerical modeling. Although all of these approaches are...
