Drivers and projections of ice phenology in mountain lakes in the western United States
Timothy J Caldwell, Sudeep Chandra, Thomas Albright, Adrian Harpold, Thomas Dills, Jonathan Greenberg, Steven Sadro, Michael D. Dettinger
2021, Limnology and Oceanography (66) 995-1008
Climate change is causing rapid warming and altered precipitation patterns in mountain watersheds, both of which influence the timing of ice breakup in mountain lakes. To enable predictions of ice breakup in the future, we analyzed a dataset of mountain lake ice breakup dates derived from remote sensing and historical...
Is there enough water? How bearish and bullish outlooks are linked to decision-maker perspectives on environmental flows
Sean M. Wineland, Rachel Fovargue, Betsey York, Abigail Lynch, Craig P. Paukert, Thomas M. Neeson
2021, Journal of Environmental Management (280)
Policies that mandate environmental flows (e-flows) can be powerful tools for freshwater conservation, but implementation of these policies faces many hurdles. To better understand these challenges, we explored two key questions: (1) What additional data are needed to implement e-flows? and...
Metabarcoding assays for the detection of freshwater mussels (Unionida) with environmental DNA
Katy E. Klymus, Catherine A. Richter, Nathan Thompson, Jo Ellen Hinck, Jess W. Jones
2021, Environmental DNA (3) 231-247
Freshwater mussels of the order Unionida are a widely distributed taxon that are important in maintaining freshwater ecosystems and are also highly imperiled throughout the world. Monitoring of mussel populations with environmental DNA (eDNA) is an attractive alternative to traditional methods because it is noninvasive and...
Detectability and abundance of snowy plovers at Salt Plains National Wildlife Refuge, Oklahoma
K. M. Heath-Acre, W. C. Conway, Clint W. Boal, D. P. Collins, G. Hensley, W. P. Johnson, P. M. Schmidt
2021, Journal of Fish and Wildlife Management (12) 50-60
In the past two decades, Salt Plains National Wildlife Refuge has been increasingly recognized as important habitat for both breeding and migratory shorebirds. North American snowy plovers Charadrius nivosus in particular rely on the nearly 5,000-ha salt flat at Salt Plains National Wildlife Refuge, which thousands use as breeding and stopover habitat....
Influence of water temperature and biotic interactions on the distribution of westslope cutthroat trout (Oncorhynchus clarkii lewisi) in a population stronghold under climate change
Kadie Heinle, Lisa A Eby, Clint C. Muhlfeld, Amber Steed, Leslie Jones, Vincent S. D’Angelo, Andrew R. Whiteley, Mark Hubblewhite
2021, Canadian Journal of Fisheries and Aquatic Sciences (78) 444-456
Climate warming is expected to have substantial impacts on native trout across the Rocky Mountains, but there is little understanding of how these changes affect future distributions of co-occurring native fishes within population strongholds. We used mixed-effects logistic regression to investigate the role of abiotic (e.g., temperature) and biotic factors...
Small mammal responses to wetland restoration in the Greater Everglades ecosystem
Stephanie Romanach, Laura D’Acunto, Julia Chapman, Matthew R Hanson
2021, Restoration Ecology (29)
Wetlands have experienced dramatic losses in extent around the world, disrupting ecosystem function, habitat, and biodiversity. In Florida’s Greater Everglades, a massive restoration effort costing billions of dollars and spanning multiple decades is underway. As Everglades restoration is implemented in incremental projects, scientists and planners monitor the outcomes of projects....
Evaluation of a roughness length parametrization accounting for wind–wave alignment in a coupled atmosphere–wave model
Sara Porchetta, O. Temel, John C. Warner, J.C. Munoz-Esparza, J Monbaliu, J. van Beeck, N. van Lipzig
2021, Quarterly Journal of the Royal Meteorological Society (147) 825-846
The importance of wind energy as an alternative energy source has increased over the latest years with more focus on offshore winds. A good estimation of the offshore winds is thus of major importance for this industry. Up to now the effect of the wind–wave (mis)alignment has not yet been...
Variable seepage meter efficiency in high-permeability settings
Donald O. Rosenberry, Jose M Nieto-Lopez, Richard M. Webb, Sascha Muller
2021, Water (12)
The efficiency of seepage meters, long considered a fixed property associated with the meter design, is not constant in highly permeable sediments. Instead, efficiency varies substantially with seepage bag fullness, duration of bag attachment, depth of meter insertion into the sediments, and seepage velocity. Tests conducted in a seepage test...
Suspended-sediment Flux in the San Francisco Estuary; Part II: the Impact of the 2013–2016 California Drought and Controls on Sediment Flux
Daniel N. Livsey, Maureen A. Downing-Kunz, David H. Schoellhamer, Andrew J. Manning
2021, Estuaries and Coasts (44) 972-990
Recent modeling has demonstrated that sediment supply is one of the primary environmental variables that will determine the sustainability of San Francisco Estuary tidal marshes over the next century as sea level rises. Therefore, understanding the environmental controls on sediment flux within the San Francisco Estuary...
Comparison of machine learning approaches used to identify the drivers of Bakken oil well productivity
Emil D. Attanasi, Philip A. Freeman, Timothy Coburn
2021, Statistical Analysis and Data Mining (14) 536-555
Geologists and petroleum engineers have struggled to identify the mechanisms that drive productivity in horizontal hydraulically fractured oil wells. The machine learning algorithms of Random Forest (RF), gradient boosting trees (GBT) and extreme gradient boosting (XGBoost) were applied to a dataset containing 7311 horizontal hydraulically fractured...
Terrestrial ecological risk analysis via dietary exposure at uranium mine sites in the Grand Canyon watershed (Arizona, USA)
Jo Ellen Hinck, Danielle M. Cleveland, Bradley E. Sample
2021, Chemosphere (265)
The U.S. Department of the Interior recently included uranium (U) on a list of mineral commodities that are considered critical to economic and national security. The uses of U for commercial and residential energy production, defense applications, medical device technologies, and...
Retrospective analysis of estrogenic endocrine disruption and land-use influences in the Chesapeake Bay watershed
Vicki S. Blazer, Stephanie E. Gordon, Daniel K. Jones, Luke R. Iwanowicz, Heather L. Walsh, Adam Sperry, Kelly L. Smalling
2021, Chemosphere (266)
The Chesapeake Bay is the largest estuary in the United States and its watershed includes river drainages in six states and the District of Columbia. Sportfishing is of major economic interest, however, the rivers within the watershed provide numerous other ecological, recreational, cultural and...
The 2018 reawakening and eruption dynamics of Steamboat Geyser, the world’s tallest active geyser
Mara Reed, Carolina Munoz-Saez, Sahand Hajimirza, Sin-Mei Wu, Anna Barth, Tarsilo Girona, Majid Rasht-Behesht, M.S Karplus, Shaul Hurwitz, Michael Manga
2021, PNAS (118)
Steamboat Geyser in Yellowstone National Park’s Norris Geyser Basin began a prolific sequence of eruptions in March 2018 after 34 y of sporadic activity. We analyze a wide range of datasets to explore triggering mechanisms for Steamboat’s reactivation and controls on eruption intervals and height. Prior to Steamboat’s renewed activity,...
Stream dissolved organic matter in permafrost regions shows surprising compositional similarities but negative priming and nutrient effects
Ethan Wologo, Sarah Shakil, Scott Zolkos, Sadie R. Textor, Stephanie Ewing, Jane Klassen, Robert G. M. Spencer, David C. Podgorski, Suzanne E. Tank, Michelle Baker, Jonathan A. O’Donnell, Kimberly P. Wickland, Sydney Foks, Jay P. Zarnetske, Joseph Lee-Cullin, Futing Liu, Yuanhe Yang, Pirkko Kortelainen, Jaana Kolehmainen, Joshua F. Dean, Jorien E. Vonk, Robert M. Holmes, Gilles Pinay, Michaela M. Powell, Jansen Howe, Rebecca J. Frei, Samuel P. Bratsman, Benjamin W. Abbott
2021, Global Biogeochemical Cycles (35)
Permafrost degradation is delivering bioavailable dissolved organic matter (DOM) and inorganic nutrients to surface water networks. While these permafrost subsidies represent a small portion of total fluvial DOM and nutrient fluxes, they could influence food webs and net ecosystem carbon balance via priming or nutrient effects...
Generation of calc-alkaline magmas during crystallization at high oxygen fugacity: An experimental and petrologic study of tephras from Buldir Volcano, western Aleutian Arc, Alaska, USA
Laura Waters, Elizabeth Cottrell, Michelle L. Coombs, Katherine A. Kelley
2021, Journal of Petrology (62)
Despite agreement that calc-alkaline volcanism occurs at subduction zones and is responsible for the genesis of continental landmasses, there is no consensus on the source of the Fe-depleted signature hallmark to calc-alkaline volcanism. In this study, we utilize mafic tephras collected from Buldir Volcano to address the genesis of...
Behavioral responses of sea lamprey (Petromyzon marinus) and white sucker (Catostomus commersonii) to turbulent flow during fishway passage attempts
Sean A. Lewandoski, Peter J. Hrodey, Scott M. Miehls, Paul Piszczek, Daniel Zielinski
2021, Canadian Journal of Fisheries and Aquatic Sciences (78) 409-421
An understanding of how undesirable and desirable fish species respond behaviorally to turbulent flow in fishways would guide development of selective fish passage techniques. We applied high-resolution computational fluid dynamics modeling and competing risks analysis towards the development of predictive selective passage models. Sea lamprey (Petromyzon marinus; an invasive fish...
Mainstems: A logical data model implementing mainstem and drainage basin feature types based on WaterML2 Part 3: HY Features concepts
David L. Blodgett, J. Micheal Johnson, Mark Sondheim, Michael Wieczorek, Nels Frazier
2021, Environmental Modelling and Software (135)
The Mainstems data model implements the catchment and flowpath concepts from WaterML2 Part 3: Surface Hydrology Features (HY_Features) for persistent, cross-scale, identification of hydrologic features. The data model itself provides a focused and lightweight method to describe hydrologic networks with minimum but sufficient information. The design is intended...
From satellites to frogs: Quantifying ecohydrological change, drought mitigation, and population demography in desert meadows
David S. Pilliod, Mark B. Hausner, Rick D. Scherer
2021, Science of the Total Environment (758)
Increasing frequency and severity of droughts have motivated natural resource managers to mitigate harmful ecological and hydrological effects of drought, but drought mitigation is an emerging science and evaluating its effectiveness is difficult. We examined ecohydrological responses of drought...
Feeling the squeeze: Adult run size and habitat availability limit juvenile river herring densities in lakes
Matthew T. Devine, Julianne Rosset, Allison H. Roy, Benjamin I. Gahagan, Michael P. Armstrong, Andrew R. Whiteley, Adrian Jordaan
2021, Transactions of the American Fisheries Society (150) 207-221
Maximum densities of juvenile river herring (Alewife Alosa pseudoharengus and Blueback Herring A. aestivalis) vary among freshwater lakes, likely due to densities of adult spawners. Differences in habitat availability and lake water quality may also contribute to variation in juvenile river herring productivity between populations, yet these relationships have not been tested across...
A lagrangian-to-eulerian metric to identify estuarine pelagic habitats
Paul Stumpner, Jon R. Burau, Alexander L. Forrest
2021, Estuaries and Coasts (44) 1231-1249
Estuaries are among the world’s most productive ecosystems, but recent natural and anthropogenic changes have stressed these ecosystems. Tools to assess estuarine pelagic habitats are important to support and maintain healthy ecosystem function. In this work, we demonstrate that estuarine pelagic habitats can be identified by...
A 450-year record of environmental change from Castle Lake, California (USA), inferred from diatoms and organic geochemistry
Paula Noble, Gary A. McGaughey, Michael R. Rosen, Christopher C. Fuller, Marco A. Aquino-Lopez, Sudeep Chandra
2021, Journal of Paleolimnology (65) 201-217
A 39-cm sediment core from Castle Lake, California (USA) spans the last ~ 450 years and was analyzed for diatoms and organic geochemistry (δ15N, δ13C, and C:N), with the goal of determining sensitivity to natural climate variation and twentieth century anthropogenic effects. Castle Lake is a subalpine, nitrogen-limited lake...
Perceived constraints and negotiations to trout fishing in Georgia based on angler specialization level
H. J. TenHarmsel, B. B. Boley, Brian J. Irwin, Cecil A. Jennings
2021, North American Journal of Fisheries Management (41) 115-129
Anglers face constraints that influence participation and dropout rates. Some recreational anglers may be able to negotiate constraints by altering the timing or frequency of participation, acquiring new skills, or modifying nonrecreational aspects such as family or work responsibilities. We consider data collected via a mail survey from Georgia-resident trout...
Stability of inorganic and methylated arsenic species in laboratory standards, surface water and groundwater under three different preservation regimes
Sarah Stetson, Melinda L. Erickson, Jeffrey Brenner, Emily C. Berquist, Christopher J. Kanagy, Susan Melissa Whitcomb, Caitlyn Margaret Lawrence
2021, Applied Geochemistry (125)
Geogenic arsenic (As) adversely affects drinking water quality in geologically diverse aquifers across the globe. Although the species of As significantly affects its fate, transport, toxicity, and As treatment technology efficacy, reported effectiveness of As species preservation methods varies widely with...
Clothianidin decomposition in Missouri wetland soils
C. J. Beringer, K. W. Goyne, R. N. Lerch, Elisabeth B. Webb, D. Mengel
2021, Journal of Environmental Quality (50) 241-251
Neonicotinoid pesticides can persist in soils for extended time periods; however, they also have a high potential to contaminate ground and surface waters. Studies have reported negative effects associated with neonicotinoids and nontarget taxa, including aquatic invertebrates, pollinating insect species, and insectivorous birds. This study evaluated factors associated with clothianidin...
Uncertainty in critical source area predictions from watershed-scale hydrologic models
Grey R. Evenson, Margaret M Kalcic, Yu-Chen Wang, Dale M. Robertson, Donald Scavia, Jay Martin, Noel Aloysius, Anna Apostel, Chelsie Boles, Michael Brooker, Remegio Confesor, Awoke T Dagnew, Tian Guo, Jeffrey Kast, Hailey Kajawa, Rebecca Logsdon Muenich, Asmita Murumkar, Todd Redder
2021, Journal of Environmental Management (279)
Watershed-scale hydrologic models are frequently used to inform conservation and restoration efforts by identifying critical source areas (CSAs; alternatively 'hotspots'), defined as areas that export relatively greater quantities of nutrients and sediment. The CSAs can then be prioritized or ‘targeted’ for...
