Uncertainty in ground-motion-to-intensity conversions significantly affects earthquake early warning alert regions
Jessie Saunders, Annemarie S. Baltay Sundstrom, Sarah E. Minson, Maren Bose
2024, The Seismic Record (4) 121-130
We examine how the choice of ground‐motion‐to‐intensity conversion equations (GMICEs) in earthquake early warning (EEW) systems affects resulting alert regions. We find that existing GMICEs can underestimate observed shaking at short rupture distances or overestimate the extent of low‐intensity shaking. Updated GMICEs that...
Conservation genetics of the endangered California Freshwater Shrimp (Syncaris pacifica): Watershed and stream networks define gene pool boundaries
Abdul M. Ada, Amy G. Vandergast, Robert N. Fisher, Darren Fong, Andrew J. Bohonak
2024, Conservation Genetics (25) 1021-1033
Understanding genetic structure and diversity among remnant populations of rare species can inform conservation and recovery actions. We used a population genetic framework to spatially delineate gene pools and estimate gene flow and effective population sizes for the endangered California Freshwater Shrimp Syncaris pacifica. Tissues of 101...
Diel temperature signals track seasonal shifts in localized groundwater contributions to headwater streamflow generation at network scale
David M. Rey, Danielle K. Hare, Jennifer H. Fair, Martin A. Briggs
2024, Journal of Hydrology (639)
Groundwater contributions to streamflow sustain aquatic ecosystem resilience; streams without significant groundwater inputs often have well-coupled air and water temperatures that degrade cold-water habitat during warm low flow periods. Widespread uncertainty in stream-groundwater connectivity across space and time has created disparate...
Artificial intelligence applied to big data reveals that lake invasions are predicted by human traffic and co-occurring invasions
Jessica L. Weir, Wesley Daniel, Kieran Hyder, Christian Skov, Paul A. Venturelli
2024, Biological Invasions (26) 3163-3178
Preventing the spread of aquatic invasive species is an important management action. Identifying the characteristics of lakes that are susceptible to invasion creates an opportunity for management groups to prioritize limited resources for high-risk areas. In this study, we leveraged big data from a popular fishing app and other publicly...
Reproducing age variability in grass carp egg samples from the lower Sandusky River, Ohio, USA, using an egg-drift model
David T. Soong, P. Ryan Jackson, Patrick M. Kocovsky, Lori Morrison, Tatiana Garcia, Santiago Santacruz, Cindy Chen, Zhenduo Zhu, Holly Susan Embke
2024, Journal of Great Lakes Research (50)
Invasive grass carp (Ctenopharyngodon idella) are currently reproducing in several tributaries to Lake Erie and threatening the Great Lakes ecosystem and fisheries. Grass carp are pelagic river spawners whose fertilized eggs drift downstream from the spawning site, developing as they drift. Variability in spawning time and location together with nonuniform...
Responses of marginal and intrinsic water-use efficiency to changing aridity using FLUXNET observations
Koong Yi, Kimberly A. Novick, Quan Zhang, Lixin Wang, Taehee Hwang, Xi Yang, Kanishka Mallick, Martin Beland, Gabriel B. Senay, Dennis Baldocchi
2024, Journal of Geophysical Research Biogeosciences (129)
According to classic stomatal optimization theory, plant stomata are regulated to maximize carbon assimilation for a given water loss. A key component of stomatal optimization models is marginal water-use efficiency (mWUE), the ratio of the change of transpiration to the change in carbon assimilation. Although the mWUE is often assumed...
Designing count-based studies in a world of hierarchical models
Quresh S. Latif, Jonathon Joseph Valente, Alison Johnston, Kayla L. Davis, Frank A. Fogarty, Adam W. Green, Gavin M. Jones, Matthias Leu, Nicole L. Michel, David C. Pavlacky Jr., Elizabeth A. Rigby, Clark S. Rushing, Jamie S. Sanderlin, Morgan W. Tingley, Qing Zhao
2024, Journal of Wildlife Management (88)
Advances in hierarchical modeling have improved estimation of ecological parameters from count data, especially those quantifying population abundance, distribution, and dynamics by explicitly accounting for observation processes, particularly incomplete detection. Even hierarchical models that account for incomplete detection, however, cannot compensate for data limitations stemming from poorly planned sampling. Ecologists...
Bedrock geologic map of the Woodstock quadrangle, Grafton County, New Hampshire
Gregory J. Walsh, William C. Burton, Thomas R. Armstrong, E. Allen Crider Jr.
2024, Scientific Investigations Map 3522
The bedrock geology of the Woodstock 7.5-minute quadrangle consists of highly deformed metasedimentary rocks of the Central Maine trough, including the Silurian Rangeley and Perry Mountain Formations and the Devonian Littleton Formation. The central, northern, and eastern parts of the quadrangle are underlain by the oldest rocks in the area,...
Widespread occupancy of the endangered northern myotis on northeastern Atlantic Coastal Plain islands
Samantha Hoff, Brittany A. Mosher, Mandy Watson, Luanne Johnson, Elizabeth Olson, Danielle O’Dell, Casey J. Pendergast, Daniel A. Bogan, Carl J. Herzog, Wendy Christine Turner
2024, Endangered Species Research (54) 141-153
Northern myotis Myotis septentrionalis are one of the bat species most affected by white-nose syndrome (WNS), and disease-induced declines may cause compounding effects when combined with other threats such as habitat loss and fragmentation. Recent evidence suggests that peripheral populations are persisting in post-WNS years; however, the environmental factors that...
Low rate of population establishment of a freshwater invertebrate (Gammarus lacustris) in experimental conservation translocations
Megan J. Fitzpatrick, Michael J. Anteau, Carl W. Isaacson, Jake D. Carleen, Breanna R. Keith, Barry Thoele, Michael Bieganek, Alaina Taylor, Danelle M. Larson
2024, Restoration Ecology (32)
Conservation translocations may be a useful tool for the restoration of declining freshwater invertebrates, but they are poorly represented in the literature. We conducted a before-after/control-impact (BACI) experiment to test the efficacy of conservation translocation for re-establishing abundant populations of the amphipod Gammarus lacustris, a...
Neotropical migratory bird monitoring study at Marine Corps Base Camp Pendleton, California—2021 annual data summary
Shannon Mendia, Barbara E. Kus
2024, Open-File Report 2024-1024
Executive SummaryTwo Monitoring Avian Productivity and Survivorship (MAPS) stations were operated at Marine Corps Base Camp Pendleton (MCBCP), California, in 2021: one at De Luz Creek and one at the Santa Margarita River. The stations were established to provide data on Neotropical migratory birds at MCBCP to support the dual...
Source, migration pathways, and atmospheric release of geologic methane associated with the complex permafrost regimes of the outer Mackenzie River Delta, Arctic, Canada
Scott Dallimore, Laura Lapham, Michelle Cote, Robert Bowen, Roger MacLeod, Hadley Marcek, C. Geoffrey Wheat, Timothy Collett
2024, Journal of Geophysical Research (129)
Sources and fluxes of methane to the atmosphere from permafrost are significant but poorly constrained in global climate models. We present data collected from the variable permafrost setting of the outer Mackenzie River Delta, including observations of aquatic methane seepage, core determinations of in situ methane occurrence...
Chlorophyll a in lakes and streams of the United States (2005–2022)
Sarah Spaulding, Lindsay R.C. Platt, Jennifer C. Murphy, S. Alex Covert, Judson Harvey
2024, Nature Scientific Data (11)
The concentration of chlorophyll a in phytoplankton and periphyton represents the amount of algal biomass. We compiled an 18-year record (2005–2022) of pigment data from water bodies across the United States (US) to support efforts to develop process-based, machine learning, and remote sensing models for prediction of harmful...
The where and why of large wood occurrence in the Upper Mississippi and Illinois Rivers
Molly Van Appledorn, Kathi Jo Jankowski, Kaija Gahm, Serenity Budd, Douglas Baumann, Barbara Bennie, Richard A. Erickson, Roger J. Haro, Jason J. Rohweder
2024, Earth Surface Processes and Landforms (49) 3383-3398
Large wood (LW) plays important geomorphic and ecological roles in rivers and is widely used as a restoration tool. Changes to floodplain land use and historical removal have altered wood dynamics in fluvial systems globally. We know little about the distribution and dynamics of LW in great rivers (approximately >105 km2)...
Temporal habitat use of mule deer in the Pueblo of Santa Ana, New Mexico
Daniel E. Bird, Laura D’Acunto, Daniel Ginter, Glenn Harper, Patrick A. Zollner
2024, Journal of Wildlife Management (88)
Mule deer (Odocoileus hemionus) are important economically, culturally, and recreationally to the Pueblo of Santa Ana in central New Mexico, USA. Studies of habitat selection improve our understanding of mule deer ecology in central New Mexico and provide the Tribe with valuable information for management...
Hydrogen systems and reactive transport modelling: An approach to natural hydrogen exploration
Geoffrey S. Ellis, Daniel Palmowski, Nicolas Lefeuvre
2024, Conference Paper
No abstract available....
Human activity drives establishment, but not invasion, of non-native plants on islands
William G. Pfadenhauer, Graziella Vittoria DiRenzo, Bethany A. Bradley
2024, Ecography
Island ecosystems are particularly susceptible to the impacts of invasive species. Many rare and endangered species that are endemic to islands are negatively affected by invasions. Past studies have shown that the establishment of non-native species on islands is related to native plant richness, habitat heterogeneity, island age, human activity,...
Evolutionary ecology of masting: Mechanisms, models, and climate change
Michal Bogdziewicz, Dave Kelly, Davide Ascoli, Thomas Caignard, Francesco Chianucci, Elizabeth E. Crone, Emilie Fleurot, Jessie Foest, Georg Gratzer, Tomika Hagiwara, Qingmin Han, Valentin Journe, Lea Keurinck, Katarzyna Kondrat, Ryan McClory, Jalene M. LaMontagne, Ignacio A. Mundo, Anita Nussbaumer, Iris Oberklammer, Misuzu Ohno, Ian Pearse, Mario B. Pesendorfer, Giulia Resente, Akiko Satake, Mitsue Shibata, Rebecca Snell, Jakub Szymkowiak, Laura Touzot, Rafal Zwolak, Magdalena Zywiec, Andrew Hacket-Pain
2024, Trends in Ecology and Evolution (39) 851-862
Many perennial plants show mast seeding, characterized by synchronous and highly variable reproduction across years. We propose a general model of masting, integrating proximate factors (environmental variation, weather cues, and resource budgets) with ultimate drivers (predator satiation and pollination efficiency). This general model shows how the...
Microbial diversity, genomics, and phage–host interactions of cyanobacterial harmful algal blooms
Lauren E Krausfeldt, Elizaveta Shmakova, Hyo Won Lee, Viviana Mazzei, Keith A. Loftin, Robert P Smith, Emily E. Karwacki, Eric Fortman, B.H. Rosen, Hidetoshi Urakawa, Manoj Dadlani, Rita Colwell, Jose V Lopez
2024, mSystems (9)
The occurrence of cyanobacterial harmful algal blooms (cyanoHABs) is related to their physical and chemical environment. However, less is known about their associated microbial interactions and processes. In this study, cyanoHABs were analyzed as a microbial ecosystem, using 1 year of 16S rRNA sequencing and 70 metagenomes collected during the...
Climate change scenarios for air and water temperatures in the upper San Francisco Estuary: Implications for thermal regimes and Delta Smelt
Brock Huntsman, Larry R. Brown, Marissa L. Wulff, Noah Knowles, R. Wayne Wagner, Frederick V. Feyrer
2024, San Francisco Estuary and Watershed Science (22)
Climate projections and their effects in the San Francisco Estuary have been evaluated as part of the US Geological Survey’s CASCaDE2 project. Understanding the ecological effects of climate change can help manage and maintain the ecological health and productivity of the San...
Comparing subduction ground-motion models to observations for Cascadia
James Andrew Smith, Morgan P. Moschetti, Eric M. Thompson
2024, Earthquake Spectra (40) 1787-1817
We evaluate Cascadia subduction ground-motion models (GMMs), considered for the 2023 US National Seismic Hazard Model (NSHM) update, by comparing observations to model predictions. The observations comprise regional recordings from intraslab earthquakes, including contributions from 2021 and 2022 events in southern Cascadia and global records from interface earthquakes. Since the...
Taking heat (downstream): Simulating groundwater and thermal equilibrium controls on annual paired air–water temperature signal transport in headwater streams
Zachary Johnson, Martin A. Briggs, Craig D. Snyder, Brittany G. Johnson, Nathaniel P. Hitt
2024, Journal of Hydrology (638)
Headwater stream temperature often exhibits spatial variation at the kilometer-scale, but the relative importance of the underlying hydrogeological processes and riverine perturbations remains poorly understood. In this study, we investigated the relative importance of groundwater (GW) and other processes on downstream annual stream temperature signal characteristics using deterministic heat budget...
Rainfall intensification amplifies exposure of American Southwest to conditions that trigger postfire debris flows
Matthew A. Thomas, Allison C. Michaelis, Nina S. Oakley, Jason W. Kean, Victor A. Gensini, Walker S. Ashley
2024, npj Natural Hazards (1)
Short-duration, high-intensity rainfall can initiate deadly and destructive debris flows after wildfire. Methods to estimate the conditions that can trigger debris flows exist and guidance to determine how often those thresholds will be exceeded under the present climate are available. However, the limited spatiotemporal resolution of climate models has hampered...
Earthquake scenario development in conjunction with the 2023 USGS National Seismic Hazard Model
Robert Edward Chase, Kishor S. Jaiswal, Mark D. Petersen
2024, Earthquake Spectra (40) 1818-1844
We present earthquake scenarios developed to accompany the release of the 2023 update to the US Geological Survey National Seismic Hazard Model (NSHM). Scenarios can serve a range of local and regional needs, from developing proactive-targeted mitigation strategies for minimizing impending risk to aiding emergency management planning. These deterministic scenarios...
Subducting plate structure and megathrust morphology from deep seismic imaging linked to earthquake rupture segmentation at Cascadia
Suzanne M. Carbotte, Brian Boston, Shuoshuo Han, Brandon Shuck, Jeffrey Beeson, Juan Pablo Canales, Harold Tobin, Nathaniel C. Miller, Mladen Nedimovic, Anne M. Trehu, Michelle Lee, Madelaine Lucas, Hanchao Jian, Danqi Jiang, Liam Moser, Christine S. Anderson, Darren Judd, Jaime Fernandez, Chuck Campbell, Antara Goswami, Rajendra Gahlawat
2024, ScienceAdvances (10)
The origin of rupture segmentation along subduction zone megathrusts and linkages to the structural evolution of the subduction zone are poorly understood. Here, regional-scale seismic imaging of the Cascadia margin is used to characterize the megathrust spanning ~900 km from Vancouver Island to the California border, across the seismogenic zone...
