A stable isotope record of late Quaternary hydrologic change in the northwestern Brooks Range, Alaska (eastern Beringia)
Amanda L. King, Lesleigh Anderson, Mark B. Abbott, Mary Edwards, Matthew S. Finkenbinder, Bruce P. Finney, Matthew J. Wooller
2022, Journal of Quaternary Science (37) 928-943
A submillennial-resolution record of lake water oxygen isotope composition (δ18O) from chironomid head capsules is presented from Burial Lake, northwest Alaska. The record spans the Last Glacial Maximum (LGM; ~20–16k cal a bp) to the present and shows a series of large lake δ18O shifts (~5‰)....
Targeted and non-targeted analysis of young-of-year smallmouth bass using comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry
Paige Teehan, Megan K. Schall, Vicki S. Blazer, Frank L Dorman
2022, Science of the Total Environment (806)
Smallmouth bass in the Susquehanna River Basin, Chesapeake Bay Watershed, USA, have been exhibiting clinical signs of disease and reproductive endocrine disruption (e.g., intersex, male plasma vitellogenin) for over fifteen years. Previous histological and targeted chemical analyses have identified infectious agents and pollutants in fish tissues including organic contaminants, mercury,...
Evidence for interannual persistence of infectious influenza A viruses in Alaska wetlands
Andrew M. Ramey, Andrew B. Reeves, Benjamin Joel Lagasse, Vijay P. Patil, Laura E. Hubbard, Dana W. Kolpin, R. Blaine McCleskey, Deborah A. Repert, David E. Stallknecht, Rebecca L. Poulson
2022, Science of the Total Environment (803)
Influenza A viruses (IAVs) deposited by wild birds into the environment may lead to sporadic mortality events and economically costly outbreaks among domestic birds. There is a paucity of information, however, regarding the persistence of infectious IAVs within the environment following deposition. In this investigation, we assessed the persistence of...
First documentation of long-distance travel by a Florida manatee to the Mexican Caribbean
Nataly Castelblanco-Martinez, Anmari Álvarez-Alemán, Raul Torres, Amy L. Teague, Sheri Barton, Kari A Rood, Eric A Ramos, Antonio A. Mignucci-Giannoni
2022, Ethology, Ecology and Evolution (34) 545-556
West Indian manatees (Trichechus manatus) are separated into two allopatric subspecies: the Florida manatee (T. m. latirostris) and the Antillean manatee (T. m. manatus). In the winter of 2020–2021, an adult manatee was sighted off the coast of Cancun, Quintana Roo, Mexico, in areas where Antillean manatees are...
Identifying climate-resistant vernal pools: Hydrologic refugia for amphibian reproduction under droughts and climate change
Jennifer M. Cartwright, Toni Lyn Morelli, Evan H. Campbell Grant
2022, Ecohydrology (15)
Vernal pools of the northeastern United States provide important breeding habitat for amphibians but may be sensitive to droughts and climate change. These seasonal wetlands typically fill by early spring and dry by mid-to-late summer. Because climate change may produce earlier and stronger growing-season evapotranspiration combined...
Risk-based wellhead protection decision support: A repeatable workflow approach
Michael N. Fienen, Nicholas Corson-Dosch, Jeremy T. White, Andrew T. Leaf, Randall J. Hunt
2022, Groundwater (60) 71-86
Environmental water management often benefits from a risk-based approach where information on the area of interest is characterized, assembled, and incorporated into a decision model considering uncertainty. This includes prior information from literature, field measurements, professional interpretation, and data assimilation resulting in a decision tool with...
Factors affecting nest success of colonial nesting waterbirds in southwest Louisiana
K. Ritenour, Sammy L. King, S. M. Collins, M.D. Kaller
2022, Estuaries and Coasts (45) 897-912
Subsidence and accelerated sea level rise impact nesting area availability and flood probabilities of breeding islands for colonial nesting waterbirds. In 2017 and 2018, we monitored 855 nests of four species of colonial nesting waterbirds on Rabbit Island, LA, to determine factors affecting nest and chick...
Physiological and nutritional constraints on zooplankton productivity due to eutrophication and climate change predicted using a resource-based modeling approach
Chen Zhang, Michael T. Brett, Jens M Nielsen, George B Arhonditsis, Ashley P Ballantyne, Jackie L Carter, Jacob Kann, Dorthe C Muller-Navarra, Daniel E. Schindler, Jason D. Stockwell, Monika Winder, David Beauchamp
2022, Canadian Journal of Fisheries and Aquatic Sciences (79) 472-486
Emerging evidence suggests that zooplankton production is affected by physiological and nutritional constraints due to climate change and eutrophication, which in turn could have broad implications for food-web dynamics and fisheries production. In this study, we developed a resource-based zooplankton production dynamics model that causally links freshwater cladoceran...
Mg/Ca ratios in ostracode genera Sarsicytheridea and Paracyprideis: A potential paleotemperature proxy for Arctic and subarctic continental shelf and slope waters
Thomas M. Cronin, Gary S. Dwyer, Katherine Keller, Laura Gemery, Jesse R. Farmer
2022, Marine Micropaleontology (174)
We evaluate the potential utility of Mg/Ca ratios in the sublittoral ostracode genera Sarsicytheridea and Paracyprideis as a paleotemperature proxy for continental shelf and upper slope waters of the Arctic Ocean and adjacent seas. Using sediment core-top and surface sediment samples, the shells of three species, S. bradii, S. punctillata,...
From drought to deluge: Spatiotemporal variation in migration routing, survival, travel time and floodplain use of an endangered migratory fish
Dalton Hance, Russell Perry, Adam C. Pope, Arnold J. Ammann, Jason L. Hassrick, Gabriel S. Hansen
2022, Canadian Journal of Fisheries and Aquatic Sciences (79) 410-428
We developed a novel statistical model to relate the daily survival and migration dynamics of an endangered anadromous fish to river flow and water temperature during both extreme drought and severe flooding in an intensively managed river system. Our Bayesian temporally stratified multistate mark recapture model integrates over...
Integrating ecosystem metabolism and consumer allochthony reveals nonlinear drivers in lake organic matter processing
Meredith A. Holgerson, Rachel A. Hovel, Patrick T. Kelly, Lauren E Bortolotti, Jennifer A. Brentrup, Amber R Bellamy, Samantha K. Oliver, Alexander J Reisenger
2022, Limnology and Oceanography (67) S71-S85
Lakes process both terrestrial and aquatic organic matter, and the relative contribution from each source is often measured via ecosystem metabolism and terrestrial resource use in the food web (i.e., consumer allochthony). Yet, ecosystem metabolism and consumer allochthony are rarely considered together, despite possible interactions and...
Evaluation of ELISA for the analysis of imidacloprid in biological matrices: Cross-reactivities, matrix interferences, and comparison to LC-MS/MS
Michael S. Gross, Emily E. Woodward, Michelle L. Hladik
2022, Chemosphere (286)
Imidacloprid is among the most used pesticides worldwide and there are toxicity concerns for nontarget organisms. Accurate and sensitive methods are necessary to quantitate imidacloprid concentrations in biological matrices to better understand their fate and effects. Here we evaluated an enzyme-linked immunosorbent assay (ELISA) kit for...
Understanding the effects of climate change via disturbance on pristine arctic lakes — Multitrophic level response and recovery to a 12-yr, low-level fertilization experiment
Phaedra E. Budy, Casey A. Pennock, Anne E. Giblin, Chris Luecke, D. L. White, George Kling
2022, Limnology and Oceanography (67) S224-S241
Effects of climate change-driven disturbance on lake ecosystems can be subtle; indirect effects include increased nutrient loading that could impact ecosystem function. We designed a low-level fertilization experiment to mimic persistent, climate change-driven disturbances (deeper thaw, greater weathering, or thermokarst failure) delivering nutrients to arctic lakes. We measured responses of...
Potential role for microbial ureolysis in the rapid formation of carbonate tufa mounds
Fernando Medina Ferrer, Michael R. Rosen, Virginia V. Russell, Jayme Feyhl-Buska, Fredrik Sonderholm, Sean Loyd, Russell Shapiro, Blake W. Stamps, Victoria Petryshyn, Cansu Demirel-Floyd, Jake V. Bailey, Hope A Johnson, John R. Spear, Frank A Corsetti
2022, Geobiology (20) 79-97
Modern carbonate tufa towers in the alkaline (~pH 9.5) Big Soda Lake (BSL), Nevada, exhibit rapid precipitation rates (exceeding 3 cm/year) and host diverse microbial communities. Geochemical indicators reveal that carbonate precipitation is, in part, promoted by the mixing of calcium-rich groundwater and carbonate-rich lake water, such...
Quantifying the response of nitrogen speciation to hydrology in the Chesapeake Bay Watershed using a multilevel modeling approach
Isabella Bertani, Gopal Bhatt, Gary W. Shenk, Lewis C. Linker
2022, Journal of American Water Resources Association (58) 792-804
Excessive nitrogen (N) inputs to coastal waters can lead to severe eutrophication and different chemical forms of N exhibit varying levels of effectiveness in fueling primary production. Efforts to mitigate N fluxes from coastal watersheds are often guided by models that predict changes in N loads...
High-resolution remote sensing and multistate occupancy estimation identify drivers of spawning site selection in fall chum salmon (Oncorhynchus keta) across a sub-Arctic riverscape
Chelsea M. Clawson, Jeffrey A. Falke, Larissa L. Bailey, Joshua Rose, Anupma Prakash, Aaron E. Martin
2022, Canadian Journal of Fisheries and Aquatic Sciences (79) 380-394
Groundwater upwellings provide warmer, stable overwinter temperatures for developing salmon embryos, which may be particularly important in cold, braided, gravel-bed sub-Arctic rivers. We used a three-year time series of aerial counts and remote sensing to estimate the distribution of low and high aggregations of spawning fall chum salmon (Oncorhynchus keta),...
Temporal and petrogenetic links between Mesoproterozoic alkaline and carbonatite magmas at Mountain Pass, California
Kathryn E. Watts, Gordon B. Haxel, David M. Miller
2022, Economic Geology (117) 1-23
Mountain Pass is the site of the most economically important rare earth element (REE) deposit in the United States. Mesoproterozoic alkaline intrusions are spatiotemporally associated with a composite carbonatite stock that hosts REE ore. Understanding the genesis of the alkaline and carbonatite magmas is an essential scientific goal for a...
Local climate adaptations in two ubiquitous Mojave Desert shrub species, Ambrosia dumosa and Larrea tridentata
Nathan A. Custer, Susan Schwinning, Lesley A. DeFalco, Todd Esque
2022, Journal of Ecology (110) 1072-1089
Widely distributed species are often locally adapted to climate gradients across their ranges. But little is known about the patterns of intraspecific adaptation in desert shrubs.We examined the questions of local adaptation in multiple populations of two common shrub species of the winter-wet Mojave Desert in North America in...
Shrub influence on soil carbon and nitrogen in a semi-arid grassland is mediated by precipitation and largely insensitive to livestock grazing
Heather L. Throop, Seth M. Munson, Nicole Hornslein, Mitchel P McClaran
2022, Arid Land Research and Management (36) 27-46
Dryland (arid and semi-arid) ecosystems globally provide more than half of livestock production and store roughly one-third of soil organic carbon (SOC). Biogeochemical pools are changing due to shrub encroachment, livestock grazing, and climate change. We assessed how vegetation microsite, grazing, and precipitation interacted to affect SOC and total nitrogen...
Eye lenses reveal ontogenetic trophic and habitat shifts in an imperiled fish, Clear Lake hitch (Lavinia exilicauda chi)
Matthew J. Young, Veronica L. Violette, Justin Kinsey Clause, Miranda Bell-Tilcock, George Whitman, Rachel C. Johnson, Frederick V. Feyrer
2022, Canadian Journal of Fisheries and Aquatic Sciences (79) 21-30
Stable isotopes recorded in fish eye lenses are an emerging tool to track dietary shifts coincident with use of diverse habitats over the lifetime of individuals. Eye lenses are metabolically inert, sequentially deposited, archival tissues that can open avenues to chronicle contaminant exposures, diet histories, trophic dynamics and migratory histories...
Estimating the influence of oyster reef chains on freshwater detention at the estuary scale using Landsat-8 imagery
Alice Alonso, Natalie G. Nelson, Simeon Yurek, David Kaplan, Maitane Olabarrieta, Peter C Frederick
2022, Estuaries and Coasts (45) 1-16
Oyster reef chains grow in response to local hydrodynamics and can redirect flows, particularly when reef chains grow perpendicular to freshwater flow paths. Singularly, oyster reef chains can act as porous dams that may facilitate nearshore accumulation of fresh or low-salinity water, in turn creating intermediate...
Factors influencing the use of water-filled tree cavities by eastern ratsnakes (Pantherophis alleghaniensis)
Brett Alexander DeGregorio, J. H. Sperry, P. J. Weatherhead
2022, Herpetological Conservation and Biology (16) 173-182
For some animals, specific microhabitats may be particularly important for certain behaviors and/or age or sex classes. Here we explore the use of previously unrecognized retreat sites (water-filled tree cavities) by Eastern Ratsnakes (Pantherophis alleghaniensis). During 4 y of radio telemetry, approximately half of the 45 ratsnakes monitored used water-filled...
Ostracod eye size: A taxonomy-free indicator of the Paleocene-Eocene Thermal Maximum sea level
Skye Y Tian, Moriaki Yasuhara, Marci M. Robinson, Huai-Hsuan M Huang
2022, Marine Micropaleontology (174)
Deep-time sea-level changes associated with the Paleocene-Eocene Thermal Maximum (PETM) are of great interest to paleoceanographers and paleontologists, especially in shallow marine settings, like the Atlantic Coastal Plain PETM sections of the Eastern North American Continental Shelf. Accurate paleo-water depth reconstruction...
Mechanisms controlling climate warming impact on the occurrence of hypoxia in Chesapeake Bay
Richard Tian, Carl Cerco, Gopal Bhatt, Lewis C. Linker, Gary W. Shenk
2022, Journal of the American Water Resources Association (58) 855-875
AClimate change represents an increasing stressor on estuarine and coastal ecosystems. A series of simulations were run using the Integrated Compartment Water Quality Model to determine the magnitude of various mechanisms controlling the effect of climate warming on dissolved oxygen (DO) in the Chesapeake Bay. The results suggested that the...
Budburst timing of valley oaks at Hastings Reservation, central coastal California
Walter D. Koenig, Mario B. Pesendorfer, Ian S. Pearse, William J. Carmen, Johannes M.H. Knops
2022, Madroño (68) 434-442
We studied the timing of budburst of valley oak (Quercus lobata Née) at Hastings Reservation, central coastal California. Similar to other taxa, budburst was advanced by warmer temperatures. Over the 30-year study period, however, there were no significant trends in either air temperature or the timing of budburst, except during the...
