Testing whether adrenal steroids mediate phenotypic and physiologic effects of elevated salinity on larval tiger salamanders
Brian J. Tornabene, Creagh W Breuner, Erica J Crespi, Blake R. Hossack
2023, Integrative Zoology (18) 27-44
Salinity (sodium chloride, NaCl) from anthropogenic sources is a persistent contaminant that negatively affects freshwater taxa. Amphibians can be susceptible to salinity, but some species are innately or adaptively tolerant. Physiological mechanisms mediating tolerance to salinity are still unclear, but changes in osmoregulatory hormones such as...
Beyond glacier-wide mass balances: Parsing seasonal elevation change into spatially resolved patterns of accumulation and ablation at Wolverine Glacier, Alaska
Lucas Zeller, Daniel J McGrath, Louis C. Sass, Shad O'Neel, Christopher J. McNeil, Emily Baker
2023, Journal of Glaciology (69) 87-102
We present spatially distributed seasonal and annual surface mass balances of Wolverine Glacier, Alaska, from 2016 to 2020. Our approach accounts for the effects of ice emergence and firn compaction on surface elevation changes to resolve the spatial patterns in mass balance at 10 m scale. We...
Integrative monitoring strategy for marine and freshwater harmful algal blooms and toxins across the freshwater-to-marine continuum
Meredith D. A. Howard, Jayme Smith, David A. Caron, Raphael Kudela, Keith A. Loftin, Kendra Hayashi, Rich Fadness, Susan Fricke, Jacob Kann, Miranda Roethler, A.O. Tatters, Susanna Theroux
2023, Integrated Environmental Assessment and Management (IEAM) (19) 586-604
Many coastal states throughout the USA have observed negative effects in marine and estuarine environments caused by cyanotoxins produced in inland waterbodies that were transported downstream or produced in the estuaries. Estuaries and other downstream receiving waters now face the dual risk of impacts...
Temporal segregation in spawning between native Yellowstone cutthroat trout and introduced rainbow trout
John M. Fennell, William C. Rosenthal, Catherine E. Wagner, Jason C. Burckhardt, Annika W. Walters
2023, Ecology of Freshwater Fish (32) 94-106
Hybridisation with introduced taxa poses a threat to native fish populations. Mechanisms of reproductive isolation can limit or prevent hybridisation between closely related species. Understanding how these mechanisms interact between the same species across geographically distinct occurrences of secondary contact, and how regional factors influence them, can inform our understanding...
Morphology and paleohydrology of intracrater alluvial fans north of Hellas Basin, Mars
Ryan B. Anderson, Rebecca Williams, Amber L. Gullikson, William Nelson
2023, Icarus (394)
Alluvial fans and sinuous ridges are both important records of the history of fluvial activity on Mars, and they often occur together. We present observations of alluvial fans, many of which exhibit inverted relief, in five craters in the region north of Hellas basin. The observed fans ranged in...
Management and environmental factors associated with simulated restoration seeding barriers in sagebrush steppe
Stella M. Copeland, John B. Bradford, Stuart P. Hardegree, Daniel Rodolphe Schlaepfer, Kevin J Badik
2023, Restoration Ecology (31)
Adverse weather conditions, particularly freezing or drought, are often associated with poor seedling establishment following restoration seeding in drylands like the Great Basin sagebrush steppe (USA). Management decisions such as planting date or seed source could improve restoration outcomes by reducing seedling exposure to weather barriers. We simulated the effects...
Spatially averaged stratigraphic data to inform watershed sediment routing: An example from the Mid-Atlantic United States
James Pizzuto, Katherine Skalak, Adam J. Benthem, Shannon A. Mahan, Mahmoud Sherif, Adam Pearson
2023, GSA Bulletin (135) 249-270
New and previously published stratigraphic data define Holocene to present sediment storage time scales for Mid-Atlantic river corridors. Empirical distributions of deposit ages and thicknesses were randomly sampled to create synthetic age-depth records. Deposits predating European settlement accumulated at a (median) rate of 0.06 cm yr−1, range from ∼18,000 to...
Challenges in linking soil health to edge-of-field water quality across the Great Lakes basin
Kevin Fermanich, Molly Meyers, Luke C. Loken, Marianne Bischoff-Gray, Ronald Turco, Karen Stahlhber, Lisa Duriancik, Mathew Dornbush, Matthew J. Komiskey
2023, Journal of Environmental Quality (52) 508-522
To better understand agricultural nutrient losses, we evaluated relationships between management (e.g., manure and tillage), soil health measurements, and resulting edge-of-field (EOF) surface water quality. This work was conducted before or early into conservation implementation at 14 Great Lakes Restoration Initiative EOF sites spanning...
Population connectivity of aquatic insects in a dam-regulated, desert river
Erin F. Abernethy, Jeffrey Muehlbauer, Theodore Kennedy, Katie E. Dziedzic, Holland Elder, Molly K. Burke, David A. Lytle
2023, River Research and Applications (39) 364-374
Humans have exaggerated natural habitat fragmentation, negatively impacting species dispersal and reducing population connectivity. Habitat fragmentation can be especially detrimental in freshwater populations, whose dispersal is already constrained by the river network structure. Aquatic insects, for instance, are generally limited to two primary modes...
Climate and landscape controls on old-growth western juniper demography in the northern Great Basin, USA
Rachel A. Loehman, Emily K. Heyerdahl, Gregory T. Pederson, David B. McWethy
2023, Ecosystems (26) 362-382
Western juniper (Juniperus occidentalis Hook.) woodlands have persisted for millennia in semiarid parts of the northern Great Basin, USA, providing critical habitat for plant and animal species. Historical records suggest that the establishment of western juniper is strongly associated with regional climatic variability. For example, the abundance of western juniper pollen...
Using physiological conditions to assess current and future habitat use of a Subarctic frog
T. Hastings, Blake R. Hossack, L. Fishback, J. M. Davenport
2023, Integrative Zoology (18) 2-14
Species with especially close dependence on the environment to meet physiological requirements, such as ectotherms, are highly susceptible to the impacts of climate change. Climate change is occurring rapidly in the Subarctic and Arctic, but there is limited knowledge on ectotherm physiology in these landscapes. We...
The Hawai'i groundwater recharge tool
Jared H. McLean, Sean B. Cleveland, Kolja Rotzoll, Scot K. Izuka, Jason Leigh, Gwen A. Jacobs, Ryan Theriot
2023, Concurrency and Computation: Practice and Experience (35)
This article discusses the design and implementation of the Hawai’i Groundwater Recharge Tool, an application for providing data and analyses of the impacts of land-cover modifications and changes in precipitation on groundwater-recharge rates for the island of O’ahu. This application uses simulation data based on a set of 29 land-cover types and 2 precipitation...
Winter habitat selection and efficacy of telemetry to aid Grass Carp removal efforts in a large reservoir
Tyler Michael Hessler, Duane Chapman, Craig P. Paukert, Jeff C. Jolley, Michael E. Byrne
2023, North American Journal of Fisheries Management (43) 189-202
Grass Carp Ctenopharyngodon idella were introduced in North America to control aquatic vegetation in small, closed systems. However, when they escape into larger systems in which they can reproduce, they have the potential to cause significant declines and alterations in aquatic vegetation communities. These alterations can in turn affect native species that...
Early Pliocene marine transgression into the lower Colorado River valley, southwestern USA, by re-flooding of a former tidal strait
Rebecca Dorsey, Juan Carlos Braga, Kevin Gardner, Kristin McDougall-Reid, Brennan O’Connell
2023, Book chapter, Straits and seaways: Controls, processes and implications in modern and ancient systems
Marine straits and seaways are known to host a wide range of sedimentary processes and products, but the role of marine connections in the development of large river systems remains little studied. This study explores a hypothesis that shallow-marine waters flooded the lower Colorado River valley at c. 5 Ma along a...
Phosphorus sources, forms, and abundance as a function of streamflow and field conditions in a Maumee River tributary, 2016-2019
Tanja N. Williamson, Edward G. Dobrowolski, Rebecca M. Kreiling
2023, Journal of Environmental Quality (52) 492-507
Total phosphorus (TP), dissolved P (DP), and suspended sediment (SS) were sampled in Black Creek, Indiana, monthly during base flow and for 100 storm events during water years 2016–2019, enabling analysis of how each of these varied as a function of streamflow and field conditions at nested edge-of-field sites. Particulate...
Alaska terrestrial and marine climate trends, 1957–2021
Thomas J. Ballinger, Uma S. Bhatt, Peter A. Bieniek, Brian Brettschneider, Rick T. Lader, Jeremy S. Littell, Richard L. Thoman, Christine F. Waigl, John E. Walsh, Melinda A. Webster
2023, Journal of Climate (36) 4375-4391
Some of the largest climatic changes in the Arctic have been observed in Alaska and the surrounding marginal seas. Near-surface air temperature (T2m), precipitation (P), snowfall, and sea ice changes have been previously documented, often in disparate studies. Here, we provide an updated, long-term trend analysis (1957–2021; n =...
Evaluating the influence of the Forestry Reclamation Approach on throughfall quantity in eastern Kentucky
Morgan Gerlitz, Carmen T. Agouridis, Tanja N. Williamson, Chris D. Barton
2022, Reclamation Sciences (1) 13-24
The Appalachian Region is a rich forested ecosystem that has been impacted by coal mining. The Surface Mining Control and Reclamation Act of 1977 was enacted to resolve many of the environmental problems caused by surface mining. Reclamation practices resulted in excessive soil compaction and use of nonnative grasses and...
Salinification of coastal wetlands and freshwater management to support resilience
Beth A. Middleton, Jere Boudell
2022, Ecosystem Health and Sustainability (9)
Climates are rapidly changing in wetland ecosystems around the world and historical land-use change is not always given enough consideration in climate adaptation discussions. Historical changes to hydrology and other key environments can exacerbate vegetation stress; e.g., recent drought and flood episodes are likely more extreme because of climate change....
Density-dependent processes and population dynamics of native sculpin in a mountain river
Casey A. Pennock, Gary P. Thiede, Phaedra E. Budy
2022, Ecology of Freshwater Fish (32) 593-605
Understanding the processes governing population dynamics is important for effective conservation and environmental management. Disentangling the relative role of density-dependent versus density-independent processes on population dynamics is often made difficult by the inability to control for abiotic or biotic factors, but long-term datasets are...
Regional water table in the Antelope Valley and Fremont Valley groundwater basins, Southwestern Mojave Desert, California, March 2014
Meghan C. Dick, Nicholas F. Teague
2022, Scientific Investigations Map 3420
Water levels were measured during March 2014 in wells in the Antelope Valley and Fremont Valley groundwater basins, southwestern Mojave Desert, California, in cooperation with the Antelope Valley-East Kern Water District, Palmdale Water District, and Littlerock Creek Irrigation District. A regional water-table map was constructed. Historical water-level data from the...
VIMTS: Variational-based Imputation for Multi-modal Time Series
Xiaowei Jia, Jennifer H. Fair, Benjamin Letcher
2022, Conference Paper, IEEE International Conference on Big Data Proceedings
Multi-modal time series data in real applications often contain data of different dimensionalities, e.g., high-dimensional modality such as image data series, and low-dimensional univariate time series. Multi-modal time series data with missing high-dimensional modal values are ubiquitous in real-world classification and regression applications. To accurately...
New indicators of ecological resilience and invasion resistance to support prioritization and management in the sagebrush biome, United States
Jeanne C. Chambers, Jessi L. Brown, John B. Bradford, David I. Board, Steven B. Campbell, Karen J. Clause, Brice Hanberry, Daniel Rodolphe Schlaepfer, Alexandra K. Urza
2022, Frontiers in Ecology and Evolution (10)
Ecosystem transformations to altered or novel ecological states are accelerating across the globe. Indicators of ecological resilience to disturbance and resistance to invasion can aid in assessing risks and prioritizing areas for conservation and restoration. The sagebrush biome encompasses parts of 11 western states and is experiencing rapid transformations...
Hydrogen isotope behavior during rhyolite glass hydration under hydrothermal conditions
Michael R. Hudak, Ilya N. Bindeman, James M. Watkins, Jacob B. Lowenstern
2022, Geochimica et Cosmochimica Acta (337) 33-48
The diffusion of molecular water (H2Om) from the environment into volcanic glass can hydrate the glass up to several wt% at low temperature over long timescales. During this process, the water imprints its hydrogen isotope composition (δDH2O) to the glass (δDgl) offset by a glass-H2O fractionation factor (ΔDgl-H2O = δDgl – δDH2O) which is approximately −33‰ at Earth...
The source, fate, and transport of arsenic in the Yellowstone hydrothermal system - An overview
R. Blaine McCleskey, D. Kirk Nordstrom, Shaul Hurwitz, Daniel R. Colman, David A. Roth, Madeline Oxner Johnson, Eric S. Boyd
2022, Journal of Volcanology and Geothermal Research (432)
The Yellowstone Plateau Volcanic Field (YPVF) contains >10,000 thermal features including hot springs, pools, geysers, mud pots, and fumaroles with diverse chemical compositions. Arsenic (As) concentrations in YPVF thermal waters typically range from 0.005 to 4 mg/L, but an As concentration of 17 mg/L has been reported. Arsenic data from thermal springs,...
Water and endangered fish in the Klamath River Basin: Do Upper Klamath Lake surface elevation and water quality affect adult Lost River and Shortnose Sucker survival?
Jacob Richard Krause, Eric C. Janney, Summer M. Burdick, Alta C. Harris, Brian S. Hayes
2022, North American Journal of Fisheries Management (42) 1414-1432
In the western United States, water allocation decisions often incorporate the needs of endangered fish. In the Klamath River basin, an understanding of temporal variation in annual survival rates of Shortnose Suckers Chasmistes brevirostris and Lost River Suckers Deltistes luxatus and their relation to environmental drivers is critical to water...
