Extent, patterns, and drivers of hypoxia in the world's streams and rivers
Joanna R Blaszczak, Lauren E Koenig, Francine H. Mejia, Alice M. Carter, Lluis Gómez-Gener, Christoper L Dutton, Nancy B. Grimm, Judson Harvey, Ashley M. Helton, Matthew J. Cohen
2023, Limnology and Oceanography - Letters (8) 453-463
Hypoxia in coastal waters and lakes is widely recognized as a detrimental environmental issue, yet we lack a comparable understanding of hypoxia in rivers. We investigated controls on hypoxia using 118 million paired observations of dissolved oxygen (DO) concentration and water temperature in over 125,000 locations...
Causes, responses, and implications of anthropogenic versus natural flow intermittence in river networks
Thibault Datry, Amélie Truchy, Julian D. Olden, Michelle H. Busch, Rachel Stubbington, Walter K. Dodds, Sam Zipper, Songyan Yu, Mathis L. Messager, Jonathan D. Tonkin, Kendra E. Kaiser, John C. Hammond, E.K. Moody, Ryan Burrows, Romain Sarremejane, Amanda DelVecchia, Megan L. Fork, Chelsea Little, Richard H Walker, Annika W. Walters, Daniel Allen
2023, BioScience (73) 9-22
Rivers that do not flow year-round are the predominant type of running waters on Earth. Despite a burgeoning literature on natural flow intermittence (NFI), knowledge about the hydrological causes and ecological effects of human-induced, anthropogenic flow intermittence (AFI) remains limited. NFI and AFI could generate contrasting hydrological and biological responses...
Using landscape genomics to delineate future adaptive potential for climate change in the Yosemite toad (Anaxyrus canorus)
Paul A. Maier, Amy G. Vandergast, Andrew J. Bohonak
2023, Evolutionary Applications (16) 74-97
An essential goal in conservation biology is delineating population units that maximize the probability of species persisting into the future and adapting to future environmental change. However, future-facing conservation concerns are often addressed using retrospective patterns that could be irrelevant. We recommend a novel landscape genomics framework for delineating future...
Earth’s upper crust seismically excited by infrasound from the 2022 Hunga Tonga–Hunga Ha’apai eruption, Tonga
Robert E. Anthony, Adam T. Ringler, Toshiro Tanimoto, Robin Matoza, Silvio De Angelis, David C. Wilson
2023, Seismological Research Letters (97) 603-616
Records of pressure variations on seismographs were historically considered unwanted noise; however, increased deployments of collocated seismic and acoustic instrumentation have driven recent efforts to use this effect induced by both wind and anthropogenic explosions to invert for near‐surface Earth structure. These studies have been limited to shallow structure because...
Historical Structure from Motion (HSfM): Automated processing of historical aerial photographs for long-term topographic change analysis
Friedrich Knuth, David Shean, Shashank Bhushan, Eli Schwat, Oleg Alexandrov, Christopher J. McNeil, Amaury Dehecq, Caitlyn Florentine, Shad O'Neel
2023, Remote Sensing of Environment (285)
Precisely measuring the Earth’s changing surface on decadal to centennial time scales is critical for many science and engineering applications, yet long-term records of quantitative landscape change are often temporally and geographically sparse. Archives of scanned historical aerial photographs provide an opportunity to augment these records with accurate elevation measurements...
Point count offsets for estimating population sizes of north American landbirds
B.P.M. Edwards, A.C. Smith, T.D.S. Docherety, M.A. Gahbauer, C.R. Gillespie, A.R. Grinde, T. Harmer, D. Iles, Steven M. Matsuoka, N.L. Michel, N.L. Murray, G. Niemi, J. Pasher, D. Pavlacky, B. Robinson, B. Ryder, P. Solymos, D. Stralberg, E.J. Zlonis
2023, Ibis (165) 482-503
Bird monitoring in North America over several decades has generated many open databases, housing millions of structured and semi-structured bird observations. These provide the opportunity to estimate bird densities and population sizes, once variation in factors such as underlying field methods, timing, land cover, proximity to...
Estimating reproductive and juvenile survival rates when offspring ages are uncertain: A novel multievent mark-resight model with beluga whale case study
Gina K Himes Boor, Tamara L McGuire, Amanda J. Warlick, Rebecca L. Taylor, Sarah J. Converse, John R McClung, Amber D Stephens
2023, Methods in Ecology and Evolution (14) 631-642
Understanding the survival and reproductive rates of a population is critical to determining its long-term dynamics and viability. Mark-resight models are often used to estimate these demographic rates, but estimation of survival and reproductive rates is challenging, especially for wide-ranging, patchily distributed, or cryptic species. In particular, existing mark-resight...
Landscape characteristics influence projected growth rates of stream-resident juvenile salmon in the face of climate change in the Kenai River watershed, south-central Alaska
B. E. Meyer, M. S. Wipfli, E. R. Schoen, D. J. Rinella, Jeffrey A. Falke
2023, Transactions of the American Fisheries Society (152) 169-186
ObjectiveClimate change is affecting the distribution and productivity of Pacific salmon throughout their range. At high latitudes, warmer temperatures have been associated with increased freshwater growth of juvenile salmon, but it is not clear how long this trend will continue before further warming leads to reduced growth....
Geochemistry and fluxes of gases from hydrothermal features at Newberry Volcano, Oregon, USA
Jennifer L. Lewicki, William C. Evans, Steven E. Ingebritsen, Laura E. Clor, Peter J. Kelly, Sara Peek, Robert A. Jensen, Andrew Hunt
2023, Journal of Volcanology and Geothermal Research (433)
We present the chemical and isotopic compositions of gases and fluxes of CO2 from the hydrothermal features of Newberry Volcano, a large composite volcano located in Oregon's Cascade Range with a summit caldera that hosts two lakes, Paulina and East Lakes. Gas samples were collected from 1982 to 2021 from Paulina...
Future direction of fuels management in sagebrush rangelands
Douglas J. Shinneman, Eva Strand, Mike Pellant, John T. Abatzoglou, Mark W. Brunson, Nancy Glenn, Julie A. Heinrichs, Mojtaba Sadegh, Nicole Vaillant
2023, Rangeland Ecology and Management (86) 50-63
Sagebrush ecosystems in the United States have been declining since EuroAmerican settlement, largely due to agricultural and urban development, invasive species, and altered fire regimes, resulting in loss of biodiversity and wildlife habitat. To combat continued conversion to undesirable ecological states and loss of habitat to invasive species fueled by...
Modeling the dynamic penetration depth of post-1950s water in unconfined aquifers using environmental tracers: Central Valley, California
Kirsten Faulkner, Bryant Jurgens, Stefan Voss, Danielle Dupuy, Zeno Levy
2023, Journal of Hydrology (616)
The penetration depth of post-1950s recharge (D-1950) in aquifers is a marker that is frequently used to identify groundwater that is susceptible to anthropogenic contamination. Here, we compute D-1950 values at wells, interpolate them in space, and project them across time to...
Provenance, genotype, and flooding influence growth and resource acquisition characteristics in a clonal, riparian shrub
Emily C. Palmquist, Kiona Ogle, Thomas G. Whitham, Gerard J. Allan, Patrick B. Shafroth, Bradley J. Butterfield
2023, American Journal of Botany (110)
PremiseRiparian plants can exhibit intraspecific phenotypic variability across the landscape related to temperature and flooding gradients. Phenotypes that vary across a climate gradient are often partly genetically determined and may differ in their response to inundation. Changes to inundation patterns across a climate gradient could thus result...
Learning from arid and urban aquatic ecosystems to inform more sustainable and resilient futures
Lauren McPhillips, Marta Berbés-Blázquez, Rebecca Hale, Tamara K Harms, Vanya Bisht, Lilana Caughman, Sandra Clinton, Elizabeth Cook, Xiaoli Dong, Jennifer Edmonds, Sarah Gergel, Rosa Gomez, Kristina G. Hopkins, David Iwaniec, Yeowon Kim, Amanda Kuhn, Libby Larson, David Bruce Lewis, Eugenía Martí, Monica M. Palta, W. John Roach, Lin Ye
2023, Journal of Hydrology (616)
The hydrology and aquatic ecology of arid environments has long been understudied relative to temperate regions. Yet spatially and temporally intermittent and ephemeral waters characterized by flashy hydrographs typify arid regions that comprise a substantial proportion of the Earth. Additionally, drought, intense storms, and human...
Assessment of resource potential from mine tailings using geostatistical modeling for compositions: A methodology and application to Katherine Mine site, Arizona, USA
C. Özgen Karacan, Oktay Erten, Josep Antoni Martín-Fernández
2023, Journal of Geochemical Exploration (245)
The mining industry, in most cases, targets a specific valuable commodity that is present in small quantities within large volumes of extracted material. After milling and processing, most of the extracted material and the effluents are stored as waste (tailings) in impoundments, such as dams or waste dumps, or...
Differential hypoxia tolerance of eastern oysters from the northern Gulf of Mexico at elevated temperature
Nicholas Coxe, Sandra M. Casas, Danielle A. Marshall, Megan K. La Peyre, Morgan W. Kelly, Jerome F. La Peyre
2023, Journal of Experimental Marine Biology and Ecology (559)
Increasing prevalence of hypoxia in shallow waters of U.S. Gulf of Mexico (GoM) estuaries can pose a serious threat to eastern oysters (Crassostrea virginica). Their tolerance to hypoxia, however, is not well characterized, especially at elevated temperatures (>30 °C) typical of GoM estuaries in summer. Moreover, it is unknown whether differences in hypoxia tolerance exist between GoM oyster populations growing in estuaries...
Can spatial food web subsidies associated with river hydrology and lateral connectivity be detected using stable isotopes?
Kirk O. Winemiller, Marcelo C. Andrade, Caroline C. Arantes, Thethela Bokhutlo, Luke Max Bower, Eduardo R. Cunha, Friedrich W. Keppeler, Edwin O. López-Delgado, Yasmin Quintana, David E. Saenz, Kevin B. Mayes, Clint R. Robertson
2023, Food Webs (34)
During and following lateral connections, aquatic organisms residing in the river channel may assimilate material from sources imported from oxbows, and oxbow residents may consume and assimilate material imported from the channel. Hydrology, lateral connectivity, and stable isotope ratios of fishes and mussels were analyzed for evidence of spatial food web subsidies between the...
Burmese python size and reproduction: Fact vs fiction
Mark Robert Sandfoss
2023, Newsletter
We’ve probably all heard rumors about monster 25-foot snakes or baby pythons emerging from under neighbors houses year-round, but what is fact vs fiction? To help us sort truth from myth, invasive pythons that were removed from the Everglades and surrendered to the National Park Service (NPS) were scientifically investigated...
Porosity, strength, and alteration – Towards a new volcano stability assessment tool using VNIR-SWIR reflectance spectroscopy
Gabor Kereszturi, Michael J. Heap, Lauren N. Schaefer, Herlan Darmawan, Frances M. Deegan, Ben M. Kennedy, Jean-Christophe Komorowski, Stuart Mead, Marina Rosas-Carbajal, Amy Ryan, Valentin R. Troll, Marlène C. Villeneuve, Thomas R. Walter
2023, Earth and Planetary Science Letters (602)
Volcano slope stability analysis is a critical component of volcanic hazard assessments and monitoring. However, traditional methods for assessing rock strength require physical samples of rock which may be difficult to obtain or characterize in bulk. Here, visible to shortwave infrared (350–2500 nm; VNIR–SWIR) reflected...
Understanding local adaptation to prepare populations for climate change
Mariah H. Meek, Erik A. Beever, Soraia Barbosa, Sarah W. Fitzpatrick, Nicholas K. Fletcher, Cinnamon S. Mittan-Moreau, Brendan N. Reid, Shane C. Campbell-Staton, Nancy Green, Jessica J. Hellmann
2023, BioScience (73) 36-47
Adaptation within species to local environments is widespread in nature. Better understanding this local adaptation is critical to conserving biodiversity. However, conservation practices can rely on species’ trait averages or can broadly assume homogeneity across the range to inform management. Recent methodological advances for studying local adaptation provide the...
Impeding access to tributary spawning habitat and releasing experimental fall-timed floods increases brown trout immigration into a dam's tailwater
Brian D. Healy, Charles Yackulic, Robert C. Schelly
2023, Canadian Journal of Fisheries and Aquatic Sciences (80) 614-627
River ecosystems have been altered by flow regulation and species introductions. Regulated flow regimes often include releases designed to benefit certain species or restore ecosystem processes, and invasive species suppression programs may include efforts to restrict access to spawning habitat. The impacts of these management interventions are...
Longitudinal analyses of catch-at-age data for reconstructing year-class strength, with an application to lake trout (Salvelinus namaycush) in the main basin of Lake Huron
Ji X. He, Andrew Edgar Honsey, David F. Staples, James R. Bence, Tracy L. Claramunt
2023, Canadian Journal of Fisheries and Aquatic Sciences (80) 183-194
We investigated using longitudinal models to reconstruct year-class strength (YCS) from catch-at-age data, with an example application to lake trout (Salvelinus namaycush) in the main basin of Lake Huron. The best model structure depended on the age range used for model implementation. The YCS trajectory from the...
Using fiber-optic distributed temperature sensing in fisheries applications: An example from the Ozark Highlands
Skylar L. Wolf, Dusty A. Swedberg, Evan P. Tanner, Samuel D. Fuhlendorf, Shannon K. Brewer
2023, Fisheries Research (258)
Studies of thermal selection by organisms, including fishes, are common and provide data that are useful for conservation and management. Advances in temperature sensing technology have improved these studies; however, the benefits of new technology (e.g., increased accuracy and greater deployment...
Bioavailability of dissolved organic matter varies with anthropogenic landcover in the Upper Mississippi River Basin
Derrick R. Vaughn, Anne M. Kellerman, Kimberly Wickland, Robert G. Striegl, David C. Podgorski, Jon R. Hawkings, Jaap H. Nienhuis, Mark M. Dornblaser, Edward G. Stets, Robert G.M. Spencer
2023, Water Research (229)
Anthropogenic conversion of forests and wetlands to agricultural and urban landcovers impacts dissolved organic matter (DOM) within streams draining these catchments. Research on how landcover conversion impacts DOM molecular level composition and bioavailability, however, is lacking. In the Upper Mississippi River Basin (UMRB), water from...
Towards a unified drag coefficient formula for quantifying wave energy reduction by salt marshes
Ling Zhu, Q. Chen, Yan Ding, Navid H. Jafari, Hongqing Wang, Bradley D. Johnson
2023, Coastal Engineering (180)
Coastal regions are susceptible to increasing flood risks amid climate change. Coastal wetlands play an important role in mitigating coastal hazards. Vegetation exerts a drag force to the flow and dampens storm surges and wind waves. The prediction of wave attenuation by...
A 1.8 million year history of Amazon vegetation
Andrea K. Kern, Thomas K. Akabane, Jaqueline Q. Ferreira, Cristiano M. Chiessi, Debra A. Willard, Fabricio Ferreira, Allan O. Sanders, Cleverson G. Silva, Catherine Rigsby, Francisco W. Cruz, Gary S. Dwyer, Sherilyn C. Fritz, Paul A. Baker
2023, Quaternary Science Reviews (299)
During the Pleistocene, long-term trends in global climate were controlled by orbital cycles leading to high amplitude glacial-interglacial variability. The history of Amazonian vegetation during this period is largely unknown since no continuous record from the lowland basin extends significantly beyond the last glacial stage. Here we present a...