Comparison of imaging flow cytometry and microscopy for freshwater algal bloom detection
Sabina R. Gifford, A. St. Amand, Jennifer L. Graham, Guy M. Foster, Cory Sauve, Denise Clark, Hannah Schroeder-Larkins
2024, Lake and Reservoir Management (40) 221-235
Imaging flow cytometry (IFC) is an emerging tool that allows for rapid identification and enumeration of phytoplankton in freshwater systems. However, few studies have assessed the effects of preservation on IFC results or compared live IFC and microscopy results in freshwater systems. Understanding the effects of preservation and...
Volcanoes of American Samoa
Natalia I. Deligne, Drew T. Downs, Elinor Lutu-McMoore, Steven Sobieszczyk, Wendy K. Stovall
2024, Fact Sheet 2023-3022
Upu Amata (Introduction)O le Atu-Samoa o le tasi lenei o faʻasologa motu mauga mu i le Vasa Pasefika i Saute. O motu e pito i sasaʻe o nei faʻasologa mauga mu o le Atu-Samoa, o motu ia o Amerika Samoa. E tofu lava mauga mu taʻitasi o Amerika Samoa ma...
Threshold changes in winter temperature and precipitation drive threshold responses across nine global climate zones and associated biomes
Alexandra R. Contosta, Kyle A. Arndt, Helen M. Baulch, Nora J. Casson, Adrian Harpold, Toni Lyn Morelli, Alexej P.K. Siren, Pamela H. Templer
2024, Annual Review of Ecology, Evolution, and Systematics (55) 271-300
Globally, winter temperatures are rising, and snowpack is shrinking or disappearing entirely. Despite previous research and published literature reviews, it remains unknown whether biomes across the globe will cross important thresholds in winter temperature and precipitation that will lead to significant ecological changes. Here, we combine the widely used Köppen–Geiger...
Shallow faulting and folding beneath south‐central Seattle, Washington State, from land‐based high‐resolution seismic‐reflection imaging
William J. Stephenson, Jack K. Odum, Thomas L. Pratt
2024, The Seismic Record (4) 184-193
The geologic framework of the Seattle fault zone (SFZ) has been extensively studied, but the structure and fault strand locations in the central portion of the fault zone through the city of Seattle have remained controversial. Much of what is known about the SFZ has come from light detection and...
Dopaminergic and anti-estrogenic responses in juvenile steelhead (Oncorhynchus mykiss) exposed to bifenthrin
Jason Tyler Magnuson, Nathan D. Sy, Philip Tanabe, Chenyang Ji, Jay Gan, Daniel Schlenk
2024, Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology (285)
The frequency of detection and concentrations of bifenthrin, a pyrethroid insecticide, in the waterways inhabited by the endangered species, steelhead trout (Oncorhynchus mykiss), has become a significant concern for regulatory agencies. Endocrine disruption has been observed with estrogenic and anti-estrogenic responses in fish species...
A literature review and hypsometric analysis to support decisions on trout management flows on the Colorado River downstream from Glen Canyon Dam
Mariah Giardina, Josh Korman, Michael D. Yard, Scott Wright, Matthew A. Kaplinski, Glenn Bennett
2024, Open-File Report 2024-1033
Executive SummaryFish stranding has been studied in select rivers worldwide, often with the purpose of determining how to mitigate adverse effects of dam operations on highly valued salmon and trout populations. However, where a reduction in trout population size is desired by resource managers, as is the case downstream of...
Assessing the risk of climate maladaptation for Canadian polar bears
L. Ruth Rivkin, Evan Richardson, Joshua D. Miller, Todd C. Atwood, Steven Baryluk, Erik W. Born, Corey Davis, Marcus Dyck, Evelien de Greef, Kristin L. Laidre, Nick Lunn, Sarah McCarthy-Neumann, Martyn E. Obbard, Megan A. Owen, Nicholas Pilfold, Amelie Roberto-Charro, Oystein Wiig, Aryn Wilder, Colin J Garroway
2024, Ecology Letters (27)
The Arctic is warming four times faster than the rest of the world, threatening the persistence of many Arctic species. It is uncertain if Arctic wildlife will have sufficient time to adapt to such rapidly warming environments. We used genetic forecasting to measure the risk of maladaptation to warming temperatures...
Role of tributary cyanobacterial and nutrient transport and sediment processes on cyanobacterial bloom initiation in Lake Superior nearshore
Rebecca M. Kreiling, Carrie E. Givens, Anna C. Baker, Richard L. Kiesling, Eric D. Dantoin, Patrik Mathis Perner, Shelby P. Sterner, Kenna J. Gierke, Paul Reneau
2024, Journal of Great Lakes Research (51)
Watershed fluxes of suspended sediment (SS), nutrients, in particular phosphorus (P), and cyanobacteria may play a role in driving cyanobacterial blooms along the southwestern shore of oligotrophic Lake Superior. To understand how tributary loads contribute to nearshore blooms, we sampled two southwestern shore tributaries, Bois Brule and Siskiwit Rivers. We...
Asymmetric mate preference and reproductive interference mediate climate-induced changes in mate availability in a small mammal hybrid zone
Marjorie D. Matocq, Elizabeth Ann Hunter, Peter J. Murphy, Casey L. Adkins, Kevin T. Shoemaker
2024, Evolution
Range expansion and contraction are among the most common biotic responses to changing environmental conditions, yet much is to be learned about the mechanisms that underlie range-edge population dynamics, especially when those areas are points of secondary contact between closely related species. Here, we present field-measured parentage data that document...
The 2023 Alaska National Seismic Hazard Model
Peter M. Powers, Jason M. Altekruse, Andrea L. Llenos, Andrew J. Michael, Kirstie Lafon Haynie, Peter J. Haeussler, Adrian Bender, Sanaz Rezaeian, Morgan P. Moschetti, James Andrew Smith, Richard W. Briggs, Robert Witter, Charles Mueller, Yuehua Zeng, Demi Leafar Girot, Julie A. Herrick, Allison Shumway, Mark D. Petersen
2024, Earthquake Spectra (40) 2545-2597
US Geological Survey (USGS) National Seismic Hazard Models (NSHMs) are used extensively for seismic design regulations in the United States and earthquake scenario development, as well as risk assessment and mitigation for both buildings and infrastructure. This 2023 update of the long-term, time-independent Alaska NSHM includes substantial changes to both...
Unforeseen plant phenotypic diversity in a dry and grazed world
Nicholas Gross, Fernando T. Maestre, Pierre Liancourt, Miguel Berdugo, Raphael Martin, Beatriz Gozalo, Victoria Ochoa, Manuel Delgado-Baquerizo, Vincent Maire, Hugo Saiz, Santiago Soliveres, Enrique Valencia, David J. Eldridge, Emilio Guirado, Franck Jabot, Sergio Asensio, Juan J. Gaitan, Miguel García-Gómez, Paloma Martinez, Jaime Martinez-Valderrama, Betty J. Mendoza, Eduardo Moreno-Jimenez, David S. Pescador, Cesar Plaza, Ivan Santaolaria Pijuan, Mehdi Abedi, Rodrigo J. Ahumada, Fateh Amghar, Antonio I. Arroyo, Khadijeh Bahalkeh, Lydia Bailey, Farah Ben Salem, Niels Blaum, Bazartseren Boldgiv, Matthew A. Bowker, Cristina Branquinho, Liesbeth van den Brink, Chongfeng Bu, Rafaella Canessa, Andrea del P. Castillo-Monroy, Helena Castro, Patricio Castro-Quezada, Roukaya Chibani, Abel Augusto Conceicao, Anthony Darrouzet-Nardi, Yvonne C. Davila, Balazs Deak, David A. Donoso, Jorge Duran, Carlos I. Espinosa, Alex Fajardo, Mohammad Farzam, Daniela Ferrante, Jorgelina Franzese, Lauchlan H. Fraser, Sofia Laura Gonzalez, Elizabeth Gusman-Montalvan, Rosa Mary Hernandez-Hernandez, Norbert Holzel, Elisabeth Huber-Sannwald, Oswaldo Jadan, Florian Jeltsch, Anke Jentsch, Mengchen Ju, Kudzai F. Kaseke, Liana Kindermann, Peter C. le Roux, Anja Linstadter, Michelle A. Louw, Mancha Mabaso, Gillian Maggs-Kolling, Thulani P. Makhalanyane, Oumarou Malam Issa, Antonio J. Manzaneda, Eugene Marais, Pierre Margerie, Frederic Mendes Hughes, Joao Vitor S. Messeder, Juan P. Mora, Gerardo Moreno, Seth M. Munson, Alice Nunes, Gabriel Oliva, Gaston R. Onatibia, Guadalupe Peter, Yolanda Pueyo, R. Emiliano Quiroga, Elizabeth Ramirez-Iglesias, Sasha C. Reed, Pedro J. Rey, Víctor M. Reyes Gómez, Alexandra Rodriguez, Victor Rolo, Juan G. Rubalcaba, Jan C. Ruppert, Osvaldo E. Sala, Ayman Salah, Phokgedi Julius Sebei, Ilan Stavi, Colton R. A. Stephens, Alberto L. Teixido, Andrew D. Thomas, Heather L. Throop, Katja Tielborger, Samantha K. Travers, Sainbileg Undrakhbold, James Val, Orsolya Valko, Frederike Velbert, Wanyoike Wamiti, Lixin Wang, Deli Wang, Glenda M. Wardle, Peter Wolff, Laura Yahdjian, Reza Yari, Eli Zaady, Juan Manuel Zeberio, Yuanling Zhang, Xiaobing Zhou, Yoann Le Bagousse-Pinguet
2024, Nature (632) 808-814
Earth harbours an extraordinary plant phenotypic diversity1 that is at risk from ongoing global changes<a id="ref-link-section-d95710910e3929" title="IPBES. Summary for policymakers of...
Disentangling drivers of annual grass invasion: Abiotic susceptibility vs. fire-induced conversion to cheatgrass dominance in the sagebrush biome
Alexandra K. Urza, David I. Board, John B. Bradford, Jessi L. Brown, Daniel R. Chambers, Daniel Rodolphe Schlaepfer, Karen C. Short
2024, Biological Conservation (297)
Invasive annual grasses are often facilitated by fire, yet they can become ecologically dominant in susceptible locations even in the absence of fire. We used an extensive vegetation plot database to model susceptibility to the invasive annual grass cheatgrass (Bromus...
Downstream decreases in water availability, tree height, canopy volume and growth rate in cottonwood forests along the Green River, southwestern USA
Richard D. Thaxton, Michael L. Scott, John T. Kemper, Sara L. Rathburn, Sabrina Butzke, Jonathan M. Friedman
2024, Ecohydrology (17)
Hydrologic stress is increasing in Fremont cottonwood (Populus fremontii) forests across the southwestern United States because of increased temperature and streamflow diversion. The spatial variability of this stress is large yet poorly understood. Along the Yampa and Green Rivers in Colorado and Utah, vapour...
Bayesian multistate models for measuring invasive carp movement and evaluating telemetry array performance
Jessica C. Stanton, Marybeth K. Brey, Alison A. Coulter, David R. Stewart, Brent Knights
2024, PeerJ (12)
Understanding the movement patterns of an invasive species can be a powerful tool in designing effective management and control strategies. Here, we used a Bayesian multistate model to investigate the movement of two invasive carp species, silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis), using acoustic telemetry. The invaded...
Spatial patterns of seed removal by harvester ants in a seed tray experiment
Michaela Ray Grossklaus, David S. Pilliod, T. Trevor Caughlin, Ian C. Robertson
2024, Environmental Entomology
Using a selection of native grass and forb seeds commonly seeded in local restoration projects, we conducted a field experiment to evaluate the effects of seed species, distance of seed patches from nests, and distance between patches on patterns of seed removal by Owyhee harvester ants, Pogonomyrmex salinus (Olsen) (Hymenoptera: Formicidae)....
A protocol for assessing bias and robustness of social network metrics using GPS based radio-telemetry data
Prabhleen Kaur, Simone Ciuti, Federico Ossi, Francesca Cagnacci, Nicolas Morellet, Anne Loison, Kamal Atmeh, Philip McLoughlin, Adele K. Reinking, Jeffrey L. Beck, Anna C. Ortega, Matthew Kauffman, Mark S. Boyce, Amy Haigh, Anna David, Laura L. Griffin, Kimberly Conteddu, Jane Faull, Michael Salter-Townshend
2024, Article
BackgroundSocial network analysis of animal societies allows scientists to test hypotheses about social evolution, behaviour, and dynamic processes. However, the accuracy of estimated metrics depends on data characteristics like sample proportion, sample size, and frequency. A protocol is urgently needed to assess for bias and robustness of social network metrics...
Projected sea-level rise and high tide flooding at Big Cypress National Preserve, Florida
Hana R. Thurman, Nicholas M. Enwright, Michael J. Osland, Davina L. Passeri, Richard H. Day, Bethanie M. Simons, Jeffrey J. Danielson, William M. Cushing
2024, Fact Sheet 2024-3022
IntroductionNational parks and preserves in the South Atlantic-Gulf Region contain valuable coastal habitats such as tidal wetlands and mangrove forests, as well as irreplaceable historic buildings and archeological sites located in low-lying areas. These natural and cultural resources are vulnerable to accelerated sea-level rise and escalating high tide flooding events....
Triangle Area Water Supply Monitoring Project, North Carolina
Rosemary M. Fanelli, Deanna Hardesty, J. Diaz
2024, Fact Sheet 2024-3032
IntroductionRivers and surface-water reservoirs supply drinking water to most residents throughout the Triangle area in North Carolina. These drinking-water supplies may be at risk because of rapid and continued land use change throughout the region. In partnership with the U.S. Geological Survey, several Triangle-area municipalities established a long-term water-quality and...
Assessing potential effects of oil and gas development activities on groundwater quality near and overlying the Elk Hills and North Coles Levee Oil Fields, San Joaquin Valley, California
John G. Warden, Matthew K. Landon, Michael J. Stephens, Tracy Davis, Janice M. Gillespie, Peter B. McMahon, Justin T. Kulongoski, Andrew G. Hunt, David H. Shimabukuro, Riley Gannon, Lyndsay B. Ball
2024, PLOS Water (3)
Groundwater resources are utilized near areas of intensive oil and gas development in California’s San Joaquin Valley. In this study, we examined chemical and isotopic data to assess if thermogenic gas or saline water from oil producing formations have mixed with groundwater near the Elk Hills and North Coles Levee...
Quantifying the coastal hazard risk reduction benefits of coral reef restoration in the U.S. Virgin Islands
Camila Gaido-Lasserre, Valerie Pietsch McNulty, Curt D. Storlazzi, Borja Reguero, Denise Perez, Sandra Fogg, Kristen A. Cumming, Jessica Ward, Steve Schill, Celeste Jarvis, Michael W. Beck
2024, Report
Coastal habitat restoration, especially of coral reef ecosystems, can significantly reduce the exposure of coastal communities to natural hazards and, consequently, the risk of wave-driven flooding. Likewise, reef degradation can increase coastal flood risks to people and property. In this study, the valuation of coral reefs in the United States...
Seasonal drought treatments impact plant and microbial uptake of nitrogen in a mixed shrub grassland on the Colorado Plateau
Rebecca A Finger-Higgens, David L. Hoover, Anna C. Knight, Savannah Wilson, Tara Boyce Belnap Bishop, Robin H. Reibold, Sasha C. Reed, Michael C. Duniway
2024, Ecology (105)
For many drylands, both long- and short-term drought conditions can accentuate landscape heterogeneity at both temporal (e.g., role of seasonal patterns) and spatial (e.g., patchy plant cover) scales. Furthermore, short-term drought conditions occurring over one season can exacerbate long-term, multidecadal droughts or aridification, by...
Risk of capture is modified by hypoxia and interjurisdictional migration of Lake Whitefish (Coregonus clupeaformis)
Richard Kraus, H. Andrew Cook, Alexis Sakis, Thomas MacDougall, Matthew Faust, Joseph Schmitt, Christopher Vandergoot
2024, Scientific Reports (14)
Interjurisdictional migrations lead to seasonally changing patterns of exploitation risk, emphasizing the importance of spatially explicit approaches to fishery management. Understanding how risk changes along a migration route supports time-area based fishery management, but quantifying risk can be complicated when multiple fishing methods are geographically segregated and when bycatch species...
A robust quantitative method to distinguish runoff-generated debris flows from floods
David B. Cavagnaro, Scott W. McCoy, Jason W. Kean, Matthew A. Thomas, Donald N. Lindsay, Brian W. McArdell, Jacob Hirschberg
2024, Geophysical Research Letters (51)
Debris flows and floods generated by rainfall runoff occur in rocky mountainous landscapes and burned steeplands. Flow type is commonly identified post-event through interpretation of depositional structures, but these may be poorly preserved or misinterpreted. Prior research indicates that discharge magnitude is commonly amplified in debris flows relative to floods...
The geochronology of White Sands Locality 2 is resolved
Jeffrey S. Pigati, Kathleen B. Springer, Harrison J. Gray, Matthew R. Bennett, David Bustos
2024, PaleoAmerica (10) 28-44
Rhode et al. (2024) allege that there are many “unresolved issues” with the geochronology of White Sands National Park (WHSA) Locality 2. They suggest there are substantial age offsets due to hard-water effects in the aquatic plants that were dated and that radiocarbon ages of pollen may be anomalously old...
Observations of flocs in an estuary and implications for computation of settling velocity
Rachel Allen, Daniel Livsey, Samantha C. McGill
2024, Journal of Geophysical Research: Oceans (129)
The settling velocity (ws) in estuarine environments can impact whether a region is eroding or accreting sediment on the bed, yet determining this rate can be an indirect process requiring a number of assumptions. Accurate determination of ws is especially needed for numerical models to reproduce observed sediment concentrations at the appropriate...
