Urban landcover differentially drives day and nighttime air temperature across a semi-arid city
Peter Christian Ibsen, G. Darrel Jenerette, Tyler Dell, Kenneth J. Bagstad, James E. Diffendorfer
2022, Science of the Total Environment (829)
Semi-arid urban environments are undergoing an increase in both average air temperatures and in the frequency and intensity of extreme heat events. Within cities, different composition and densities of urban landcovers (ULC) influence local air temperatures, either mitigating or increasing heat. Currently, understanding how...
Large fires or small fires, will they differ in affecting shifts in species composition and distributions under climate change?
Wenru Xu, Hong S. He, Chao Huang, Shengwu Duan, Todd Hawbaker, Paul D. Henne, Yu Liang, Zhiliang Zhu
2022, Forest Ecology and Management (510) 1-10
Climate change is expected to increase fire activity, which has the potential to accelerate climate-induced shifts in species composition and distribution in the boreal-temperate ecotone. Wildfire can kill resident trees, and thus provide establishment opportunities for migrating tree species. However, the role of fire size and its interactions with...
A review of the microtremor horizontal-to-vertical spectral ratio (MHVSR) method
S. Molnar, A. Sirohey, J. Assaf, P.-Y. Bard, C. Castellaro, C. Cornou, B. Cox, B. Guillier, B. Hassani, H. Kawase, S. Matsushima, F. J. Sánchez-Sesma, Alan Yong
2022, Journal of Seismology (26) 653-685
The single-station microtremor horizontal-to-vertical spectral ratio (MHVSR) method was initially proposed to retrieve the site amplification function and its resonance frequencies produced by unconsolidated sediments overlying high-velocity bedrock. Presently, MHVSR measurements are predominantly conducted to obtain an estimate of the fundamental site frequency at sites where a strong subsurface impedance...
A review of near-surface QS estimation methods using active and passive sources
Stefano Parolai, Carlo G. Lai, Ilaria Dreossi, Olga-Joan Ktenidou, Alan K. Yong
2022, Journal of Seismology (26) 823-862
Seismic attenuation and the associated quality factor (Q) have long been studied in various sub-disciplines of seismology, ranging from observational and engineering seismology to near-surface geophysics and soil/rock dynamics with particular emphasis on geotechnical earthquake engineering and engineering seismology. Within the broader framework of seismic site characterization, various experimental techniques...
Modeling the dynamics of salt marsh development in coastal land reclamation
Yiyang Xu, Tarandeep S. Kalra, Neil K. Ganju, Sergio Fagherazzi
2022, Geophysical Research Letters (49)
The valuable ecosystem services of salt marshes are spurring marsh restoration projects around the world. However, it is difficult to determine the final vegetated area based on physical drivers. Herein, we use a 3D fully coupled vegetation-hydrodynamic-morphological modeling system (COAWST), to simulate the final vegetation cover and the timescale to...
Influence of offshore oil and gas structures on seascape ecological connectivity
Dianne L McLean, Luciana C. Ferreira, Jessica A Benthuysen, Karen J. Miller, Marie-Lise Schlappy, Matthew J. Ajemian, Oliver Berry, Silvana N. R. Birchenough, Todd Bond, Fabio Boschetti, Ann S Bull, Jeremy T Claisse, Scott A Condie, Pierpaolo Consoli, Joop W. P. Coolen, Michael R. Elliott, Irene S Fortune, Ashley M Fowler, Bronwyn M Gillanders, Hugo B Harrison, Kristen Hart, Lea-Anne Henry, Chad L Hewitt, Natalie Hicks, Karlo Hock, Kieran Hyder, Milton S. Love, Peter I Macreadie, Robert J. Miller, William A Montevecchi, Mary M Nishimoto, Henry M. Page, David M Paterson, Charitha B Pattiaratchi, Gretta T Pecl, Joanne S Porter, David B. Reeves, Cynthia Riginos, Sally Rouse, Debbie J. F. Russell, Craig D. H. Sherman, Jonas Teilmann, Victoria L. G. Todd, Eric A. Treml, David H. Williamson, Michele Thums
2022, Global Change Biology (28) 3515-3536
Offshore platforms, subsea pipelines, wells and related fixed structures supporting the oil and gas (O&G) industry are prevalent in oceans across the globe, with many approaching the end of their operational life and requiring decommissioning. Although structures can possess high ecological diversity and productivity, information on...
Coupling validation effort with in situ bioacoustic data improves estimating relative activity and occupancy for multiple species with cross-species misclassifications
Christian Stratton, Kathryn M. Irvine, Katharine M. Banner, Wilson J. Wright, Cori Lausen, Jason Rae
2022, Methods in Ecology and Evolution (13) 1288-1303
The increasing complexity and pace of ecological change requires natural resource managers to consider entire species assemblages. Acoustic recording units (ARUs) require minimal cost and effort to deploy and inform relative activity, or encounter rates, for multiple species simultaneously. ARU-based surveys require post-processing of the recordings via software algorithms...
Precision of headwater stream permanence estimates from a monthly water balance model in the Pacific Northwest, USA
Konrad Hafen, Kyle W. Blasch, Paul E. Gessler, Roy Sando, Alan H. Rea
2022, Water (14)
Stream permanence classifications (i.e., perennial, intermittent, ephemeral) are a primary consideration to determine stream regulatory status in the United States (U.S.) and are an important indicator of environmental conditions and biodiversity. However, at present, no models or products adequately describe surface water presence for regulatory determinations. We modified the Thornthwaite...
Forest cover lessens the impact of drought on streamflow in Puerto Rico
Jazlynn S. Hall, Martha A. Scholl, Yuri Gorokhovich, Maria Uriarte
2022, Hydrological Processes (36)
Tropical regions are experiencing high rates of forest cover loss coupled with changes in the volume and timing of rainfall. These shifts can compromise streamflow and water provision, highlighting the need to identify how forest cover influences streamflow generation under variable rainfall conditions. Although rainfall is the key driver of...
Carnivores in color: Pelt color patterns among carnivores in Idaho
David Edward Ausband, Jessica M. Krohner
2022, Journal of Mammalogy (103) 598-607
Pelt color serves many functions from signaling to crypsis to thermoregulation and its purpose has been a lively source of debate in biology for over a century. Determining the effects of both habitat and human influences on pelt color patterns can be difficult. We made novel use of a...
Evaluation of salinity and nutrient conditions in the Heart River Basin, North Dakota, 1970–2020
Wyatt S. Tatge, Rochelle A. Nustad, Joel M. Galloway
2022, Scientific Investigations Report 2022-5013
The Heart River Basin is predominantly an agricultural basin in western North Dakota and is approximately 3,350 square miles. The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture Natural Resources Conservation Service and the Grant County Soil Conservation District, completed a study to assess spatial and temporal...
Stochastic agent-based model for predicting turbine-scale raptor movements during updraft-subsidized directional flights
Rimple Sandhu, Charles Tripp, Eliot Quon, Regis Thedin, Michael Lawson, David Brandes, Chris Farmer, Tricia A. Miller, Caroline Draxl, Paula Doubrawa, Lindy Williams, Adam E. Duerr, Melissa A. Braham, Todd E. Katzner
2022, Ecological Modelling (466) 1-12
Rapid expansion of wind energy development across the world has highlighted the need to better understand turbine-caused avian mortality. The risk to golden eagles (Aquila chrysaetos) is of particular concern due to their small population size and conservation status. Golden eagles subsidize their flight in part by soaring in orographic...
Quantifying large-scale continental shelf margin growth and dynamics across mid-Cretaceous Arctic Alaska with detrital zircon U-Pb dating
Richard O. Lease, David W. Houseknecht, Andrew R. C. Kylander-Clark
2022, Geology (50) 620-625
Sequence stratigraphy provides a unifying framework for integrating diverse observations to interpret sedimentary basin evolution; however, key time assumptions about stratigraphic elements spanning hundreds of kilometers are rarely quantified. We integrate new detrital zircon U-Pb (DZ) dates from 28 samples with seismic mapping to establish a chronostratigraphic framework across 800...
A physical interpretation of asymmetric growth and decay of the geomagnetic dipole moment
Bruce Buffett, Margaret Susan Avery, William E. Davis Jr.
2022, Geochemistry, Geophysics, Geosystems (23)
Observations of relative paleointensity reveal several forms of asymmetry in the time dependence of the virtual axial dipole moment (VADM). Slow decline of the VADM into a reversal is often followed by a more rapid rise back to a quasi-steady state. Asymmetry is also observed in trends...
Past terrestrial hydroclimate sensitivity controlled by Earth system feedbacks
R. Feng, T. Bhattacharya, B. Otto-Bliesner, E. Brady, A. M. Haywood, J. Tindall, S. J. Hunter, A. Abe- Ouchi, W.-L. Chan, M. Kageyama, C. Contoux, C. Guo, X. Li, G. Lohmann, C. Stepanek, N. Tan, Q. Zhang, Z. Zhang, Z. Han, J.R. Williams, D. J. Lunt, Harry J. Dowsett, Deepak Chandan, W. Richard Peltier
2022, Nature Communications (13)
Despite tectonic conditions and atmospheric CO2 levels (pCO2) similar to those of present-day, geological reconstructions from the mid-Pliocene (3.3-3.0 Ma) document high lake levels in the Sahel and mesic conditions in subtropical Eurasia, suggesting drastic reorganizations of subtropical terrestrial hydroclimate during this interval. Here, using a compilation of proxy...
Mechanisms for retention of low molecular weight organic carbon varies with soil depth at a coastal prairie ecosystem
Jack McFarland, Corey Lawrence, Courtney Creamer, Marjorie S. Schulz, Christopher H. Conaway, Sara Peek, Mark Waldrop, Sabrina N. Sevilgen, Monica Haw
2022, Soil Biology and Biochemistry (168)
Though primary sources of carbon (C) to soil are plant inputs (e.g., rhizodeposits), the role of microorganisms as mediators of soil organic carbon (SOC) retention is increasingly recognized. Yet, insufficient knowledge of sub-soil processes complicates attempts to describe microbial-driven C cycling at depth as most studies of microbial-mineral-C interactions focus...
Volatile organic compounds in groundwater used for public supply across the United States: Occurrence, explanatory factors, and human-health context
Laura M. Bexfield, Kenneth Belitz, Miranda S. Fram, Bruce D. Lindsey
2022, Science of the Total Environment (827)
This systematic assessment of occurrence for 85 volatile organic compounds (VOCs) in raw (untreated) groundwater used for public supply across the United States (U.S.), which includes 43 compounds not previously monitored by national studies, relates VOC occurrence to explanatory factors and assesses VOC detections in a human-health context. Samples were...
Sediment monitoring and streamflow modeling before and after a stream restoration in Rice Creek, Minnesota, 2010–2019
Joel T. Groten, Colin T. Livdahl, Stephen B. DeLong, J. William Lund, Jonathan M. Nelson, Erin N. Coenen, Jeffrey R. Ziegeweid, Matthew J. Kocian
2022, Scientific Investigations Report 2022-5004
The Rice Creek Watershed District (RCWD) cooperated with the U.S. Geological Survey to establish a 10-year suspended sediment and bedload monitoring and streamflow modeling study to evaluate the effects of two restored meander sections on middle Rice Creek in Arden Hills, Minnesota. The RCWD goals of this stream restoration were...
Functional wetland loss drives emerging risks to waterbird migration networks
J Patrick Donnelly, Johnnie N Moore, Michael L. Casazza, Shea P Coons
2022, Frontiers in Ecology and Evolution (10)
Migratory waterbirds (i.e., shorebirds, wading birds, and waterfowl) rely on a diffuse continental network of wetland habitats to support annual life cycle needs. Emerging threats of climate and land-use change raise new concerns over the sustainability of these habitat networks as water scarcity triggers cascading ecological effects impacting wetland habitat...
Response of Green Lake, Wisconsin, to changes in phosphorus loading, with special emphasis on near-surface total phosphorus concentrations and metalimnetic dissolved oxygen minima
Dale M. Robertson, Benjamin J. Siebers, Robert Ladwig, David P. Hamilton, Paul C. Reneau, Cory P. McDonald, Stephanie Prellwitz, Richard C. Lathrop
2022, Scientific Investigations Report 2022-5003
Green Lake is the deepest natural inland lake in Wisconsin, with a maximum depth of about 72 meters. In the early 1900s, the lake was believed to have very good water quality (low nutrient concentrations and good water clarity) with low dissolved oxygen (DO) concentrations occurring in only the deepest...
Possible anthropogenic enhancement of precipitation in the Sahel-Sudan Savanna by remote agricultural irrigation
Yujin Zeng, Paul C. D. Milly, Elena Shevliakova, Sergey Malyshev, Marjolein von Huijgevoort, Krista A. Dunne
2022, Geophysical Research Letters (49)
The local climatic impacts of historical expansion of irrigation are substantial, but the distant impacts are poorly understood, and their governing mechanisms generally have not been rigorously analyzed. Our experiments with an earth-system model suggest that irrigation in the Middle East and South Asia may enhance rainfall in a large...
Greater than the sum of its parts: Computationally flexible Bayesian hierarchical modeling
Devin S. Johnson, Brian M. Brost, Mevin Hooten
2022, Journal of Agricultural, Biological and Environmental Statistics (27) 400
We propose a multistage method for making inference at all levels of a Bayesian hierarchical model (BHM) using natural data partitions to increase efficiency by allowing computations to take place in parallel form using software that is most appropriate for each data partition. The full hierarchical model is then approximated...
Maximizing species distribution model performance when using historical occurrences and variables of varying persistency
Jason T. Bracken, Amelie Y. Davis, Katherine M. O’Donnell, William Barichivich, Susan C. Walls, Tereza Jezkova
2022, Ecosphere (13)
Occurrence data used to build species distribution models often include historical records from locations in which the species no longer exists. When these records are paired with contemporary environmental values that no longer represent the conditions the species experienced, the model creates false associations that hurt predictive performance. The extent...
Nitrogen enrichment during soil organic matter burning and molecular evidence of maillard reactions
William Bahureksa, Robert B. Young, Amy M. McKenna, Huan Chen, Kevin A. Thorn, Fernando L. Rosario-Ortiz, Thomas Borch
2022, Environmental Science and Technology (56) 4597-4609
Wildfires in forested watersheds dramatically alter stored and labile soil organic matter (SOM) pools and the export of dissolved organic matter (DOM). Ecosystem recovery after wildfires depends on soil microbial communities and revegetation and therefore is limited by the availability of nutrients,...
Linkages between land-use change and groundwater management foster long-term resilience of water supply in California
Nathan D. Van Schmidt, Tamara Wilson, Ruth Langridge
2022, Journal of Hydrology: Regional Studies (40)
Study RegionWe created a 270-m coupled model of land-use and groundwater conditions, LUCAS-W[ater], for California’s Central Coast. This groundwater-dependent region is undergoing a dramatic reorganization of groundwater management under California’s 2014 Sustainable Groundwater Management Act (SGMA).Study FocusUnderstanding land-use and...
