What common-garden experiments tell us about climate responses in plants
Susanne Schwinning, Christopher J. Lorti, Todd Esque, Lesley A. DeFalco
2022, Journal of Ecology (110) 986-996
Common garden experiments are indoor or outdoor plantings of species or populations collected from multiple distinct geographic locations, grown together under shared conditions. These experiments examine a range of questions for theory and application using a variety of methods for analysis. The eight papers of this special feature comprise...
Classifying Worldwide Standardized Seismograph Network records using a simple convolution neural network
Nagle Nagle-McNaughton, Adam T. Ringler, Robert Anthony, Alexis Casondra Bianca Alejandro, David C. Wilson, Justin Thomas Wilgus
2022, Seismological Research Letters (93) 2451-2466
The U.S. Geological Survey (USGS) maintains an archive of 189,180 digitized scans of analog seismic records from the World‐Wide Standardized Seismograph Network (WWSSN). Although these scans have been made public, the archive is too large to manually review, and few researchers have utilized large...
Incorporating snowmelt into daily estimates of recharge using a state-space model of infiltration
Allen M. Shapiro, Frederick Day-Lewis, William M. Kappel, John H. Williams
2022, Groundwater (60) 721-746
A state-space model (SSM) of infiltration estimates daily groundwater recharge using time-series of groundwater-level altitude and meteorological inputs (liquid precipitation, snowmelt, and evapotranspiration). The model includes diffuse and preferential flow through the unsaturated zone, where preferential flow is a function of liquid precipitation and snowmelt rates and a threshold rate,...
U.S. Geological Survey national shoreline change— Summary statistics for updated vector shorelines (1800s–2010s) and associated shoreline change data for the Georgia and Florida coasts
Meredith G. Kratzmann
2022, Data Report 1156
Rates of shoreline change have been updated for the open-ocean sandy coastlines of Georgia and Florida as part of the U.S. Geological Survey’s Coastal Change Hazards programmatic focus. This work was formerly within the National Assessment of Shoreline Change project. Shorelines were compiled from the original report published in 2005,...
The potential of semi-structured citizen science data as a supplement for conservation decision-making: Validating the performance of eBird against targeted avian monitoring efforts
Erica Francis Stuber, Orin Robinson, Emily R. Bjerre, Mark C. Otto, Brian A. Millsap, Guthrie S. Zimmerman, Michael G. Brasher, Kevin M. Ringelman, Auriel Fournier, Aaron Yetter, Jennifer Isola, Viviana Ruiz-Gutierrez
2022, Biological Conservation (270)
Methods are being developed to capitalize on citizen science data for research and monitoring, but these data are rarely used within established decision-making frameworks of wildlife agencies. Citizen science data are often collected at higher resolution and extent than targeted monitoring programs, and may provide complementary information. Here, we demonstrate...
Using predictions from multiple anthropogenic threats to estimate future population persistence of an imperiled species
Brian Folt, Michael Marshall, Jo Anna Emanuel, Michelina Dziadzio, Jane Cooke, Lourdes Mena, Matthew Hinderliter, Scott Hoffmann, Nicole Rankin, John Tupy, Conor P. McGowan
2022, Global Ecology and Conservation (36)
Imperiled species face numerous and diverse anthropogenic threats to their persistence, and wildlife managers charged with making conservation decisions benefit from a sound understanding of how populations, species, and ecosystems will respond to future changes in threats to biodiversity. In southeastern North America, the gopher tortoise (Gopherus polyphemus) is a keystone species in upland...
Microtremor array method using spatial autocorrelation analysis of Rayleigh‑wave data
Koichi Hayashi, Michael W. Asten, William J. Stephenson, Cecile Cornou, Manuel Hobiger, Marco Pilz, Hiroaki Yamanaka
2022, Journal of Seismology
Microtremor array measurements (MAM) and passive surface wave methods in general, have been increasingly used to non-invasively estimate shear-wave velocity structures (Vs) for various purposes. The methods estimate dispersion curves and invert them for retrieving S-wave velocity profiles. This paper summarizes principles, limitations, data collection and processing methods. It intends...
Major point and nonpoint sources of nutrient pollution to surface water have declined throughout the Chesapeake Bay watershed
Robert D. Sabo, Breck Maura Sullivan, Cuiyin Wu, Emily M. Trentacoste, Qian Zhang, Gary W. Shenk, Gopal Bhatt, Lewis C. Linker
2022, Environmental Research Communications (4)
Understanding drivers of water quality in local watersheds is the first step for implementing targeted restoration practices. Nutrient inventories can inform water quality management decisions by identifying shifts in nitrogen (N) and phosphorus (P) balances over space and time while also keeping track of the likely urban...
Hydroclimate response of spring ecosystems to a two-stage Younger Dryas event in western North America
Jeffrey S. Pigati, Kathleen B. Springer
2022, Scientific Reports (12)
The Younger Dryas (YD) climate event is the preeminent example of abrupt climate change in the recent geologic past. Climate conditions during the YD were spatially complex, and high-resolution sediment cores in the North Atlantic, western Europe, and East Asia have revealed it unfolded in two distinct stages, including an...
Accounting for residual heterogeneity in double-observer sightability models decreases bias in burro abundance estimates
Jacob Daniel Hennig, Kathryn A. Schoenecker, James W. Cain III, Gary W. Roemer, Jeffrey L. Laake
2022, Journal of Wildlife Management (86)
Feral burros (Equus asinus) and horses (E. ferus caballus) inhabiting public land in the western United States are intended to be managed at population levels established to promote a thriving, natural ecological balance. Double-observer sightability (MDS) models, which use detection records from multiple observers...
U.S. Geological Survey Hydrologic Toolbox — A graphical and mapping interface for analysis of hydrologic data
Paul M. Barlow, Amy R. McHugh, Julie E. Kiang, Tong Zhai, Paul Hummel, Paul Duda, Scott Hinz
2022, Techniques and Methods 4-D3
The Hydrologic Toolbox is a Windows-based desktop software program that provides a graphical and mapping interface for analysis of hydrologic time-series data with a set of widely used and standardized computational methods. The software combines the analytical and statistical functionality provided in the U.S. Geological Survey Groundwater and Surface-Water Toolboxes...
Hawaii and Landsat
U.S. Geological Survey
2022, Fact Sheet 2022-3024
Hawaii stands apart from the rest of the United States, literally and figuratively. The nearest of the eight islands that make up the Hawaiian archipelago is 2,000 miles from the U.S. mainland. Like every bit of land mass within the State, it emerged from the Pacific Ocean after thousands of...
Surface parameters and bedrock properties covary across a mountainous watershed: Insights from machine learning and geophysics
Sebastian Uhlemann, Baptiste Dafflon, Haruko Murakami Wainwright, Kenneth Hurst Williams, Burke J. Minsley, Katrina D. Zamudio, Bradley Carr, Nicola Falco, Craig Ulrich, Susan S. Hubbard
2022, Science Advances (8)
Bedrock property quantification is critical for predicting the hydrological response of watersheds to climate disturbances. Estimating bedrock hydraulic properties over watershed scales is inherently difficult, particularly in fracture-dominated regions. Our analysis tests the covariability of above- and belowground features on a watershed scale, by linking borehole geophysical data, near-surface geophysics,...
Management goals for conserving White Sturgeon in the Sacramento-San Joaquin River basin
Marta Ulaski, Shannon Blackburn, Zachary Jackson, Michael C. Quist
2022, Journal of Fish and Wildlife Management (13) 334-343
Management objectives for long-lived species are difficult to define because many taxa have delayed maturity and variable recruitment. White Sturgeon Acipenser transmontanus is an example of a species with a complex life history that complicates long-term status monitoring and establishment of management objectives. Historically, White...
Wyoming and Landsat
U.S. Geological Survey
2022, Fact Sheet 2022-3027
Wyoming has the smallest population of any State—fewer than 600,000 people—but an abundance of wildlife. The largest number of pronghorn (Antilocapra americana), often called antelope, and the biggest public bison (Bison bison) herd in the United States live in Wyoming, which also hosts elk (Cervus elaphus), moose (Alces americanus), bighorn sheep...
Risk assessment for bull trout introduction into Sullivan Lake and Harvey Creek, northeastern Washington
Jill M. Hardiman, Rachel B. Breyta, Carl O. Ostberg
2022, Open-File Report 2022-1032
The Kalispel Tribe of Indians (KT), U. S. Fish and Wildlife Service, and Washington Department of Fish and Wildlife are engaged in conservation of bull trout (Salvelinus confluentus) in the Lake Pend Oreille (LPO) Core Area. The LPO is a complex habitat core area which falls within three states...
Areas contributing recharge to priority wells in valley-fill aquifers in the Neversink River and Rondout Creek drainage basins, New York
Nicholas Corson-Dosch, Michael N. Fienen, Jason S. Finkelstein, Andrew T. Leaf, Jeremy T. White, Joshua C. Woda, John H. Williams
2022, Scientific Investigations Report 2021-5112
In southeastern New York, the villages of Ellenville, Wurtsboro, Woodridge, the hamlet of Mountain Dale, and surrounding communities in the Neversink River and Rondout Creek drainage basins rely on wells that pump groundwater from valley-fill glacial aquifers for public water supply. Glacial aquifers are vulnerable to contamination because they are...
Areas contributing recharge to selected production wells in unconfined and confined glacial valley-fill aquifers in Chenango River Basin, New York
Paul J. Friesz, John H. Williams, Jason S. Finkelstein, Joshua C. Woda
2022, Scientific Investigations Report 2021-5083
In the Chenango River Basin of central New York, unconfined and confined glacial valley-fill aquifers are an important source of drinking-water supplies. The risk of contaminating water withdrawn by wells that tap these aquifers might be reduced if the areas contributing recharge to the wells are delineated and these areas...
Data sources and methods for digital mapping of eight valley-fill aquifer systems in upstate New York
Jason S. Finkelstein, Joshua C. Woda, John H. Williams
2022, Scientific Investigations Report 2022-5024
Digital hydrogeologic maps were developed in eight study areas in upstate New York by the U.S. Geological Survey in cooperation with the New York State Department of Environmental Conservation. The digital maps define the hydrogeologic framework of the valley-fill aquifers and surrounding till-covered uplands in the vicinity of the villages...
Gravity surveys for estimating possible width of enhanced porosity zones across structures on the Coconino Plateau, Coconino County, north-central Arizona
Libby M. Wildermuth
2022, Scientific Investigations Report 2022-5031
The U.S. Geological Survey completed gravity transects in 2015, 2018, and 2019 over four features: the Bright Angel Fault, Bright Angel Monocline, Tusayan Graben, and Redlands Ranch Fault Zone in the Coconino Plateau, Coconino County, Arizona, to determine if the existence and width of high porosity (low density) zones could...
Limits to reproduction and seed size-number trade-offs that shape forest dominance and future recovery
Tong Qiu, Robert Andrus, Marie-Claire Aravena Acuna, Davide Ascoli, Yves Bergeron, Roberta Berretti, Daniel Berveiller, Thomas Biovin, Raul Bonal, Don C. Bragg, Thomas Caignard, Rafael Calama, J. Julio Camarero, Chia-Huo Chang-Yang, Natalie L. Cleavitt, Benoit Courbaud, Francois Courbet, Thomas Curt, Adrian Das, Evangelia Daskalakou, Hendrik Davi, Nicolas Delpierre, Sylvain Delzon, Michael Dietze, Sergio Donoso Calderon, Laurent Dormont, Josep Maria Espelta, Timothy J. Fahey, William Farfan-Rios, Catherine A. Gehring, Gregory S. Gilbert, Georg Gratzner, Cathryn H. Greenberg, Qinfeng Guo, Andrew Hacket-Pain, Arndt Hampe, Qingmin Han, Janneke Hille Ris Lambers, Kazuhiko Hoshizaki, Ines Ibanez, Jill F. Johnstone, Valentin Journe, Daisuke Kabeya, Christopher L. Kilner, Thomas Kitzberger, Johannes M. H. Knops, Richard K. Kobe, Georges Kunstler, Hiroko Kurokawa, Jonathan G. A. Lageard, Jalene M. LaMontagne, Mateusz Ledwon, Francois Lefevre, Theodor Leininger, Jean-Marc Limousin, James A. Lutz, Diana Macias, Eliot J. B. McIntire, Christopher M. Moore, Emily V. Moran, Renzo Motta, Jonathan A. Myers, Thomas A. Nagel, Kyotaro Noguchi, Jean-Marc Ourcival, Robert Parmenter, Ian S. Pearse, Ignacio M. Perez-Ramos, Lukasz Piechnik, John Poulsen, Renata Poulton-Kamakura, Miranda D. Redmond, Chantal D. Reid, Kyle C. Rodman, Francisco Rodrigues-Sanchez, Javier Sanguinetti, C. Lane Scher, Wiliam H Schlesinger, Harald Schmidt Van Marle, Barbara Seget, Shubhi Sharma, Miles Silman, Michael A. Steele, Nathan L. Stephenson, Jacob N. Straub, I-Fang Sun, Samantha Sutton, Jennifer J. Swenson, Margaret Swift, Peter A. Thomas, Maria Uriarte, Giorgio Vacchiano, Thomas T. Veblen, Amy V. Whipple, Thomas G. Whitham, Andreas Wion, Boyd Wright, S. Joseph Wright, Kai Zhu, Jess Zimmermann, Roman Zlotin, Magdalena Zywiec, James S. Clark
2022, Nature Communications (13)
The relationships that control seed production in trees are fundamental to understanding the evolution of forest species and their capacity to recover from increasing losses to drought, fire, and harvest. A synthesis of fecundity data from 714 species worldwide allowed us to examine hypotheses that are central to quantifying reproduction,...
Development and application of Landsat-based wetland vegetation cover and unvegetated-vegetated marsh ratio (UVVR) for the conterminous United States
Neil K. Ganju, Brady Couvillion, Zafer Defne, Kate Ackerman
2022, Estuaries and Coasts (45) 1861-1878
Effective management and restoration of salt marshes and other vegetated intertidal habitats require objective and spatially integrated metrics of geomorphic status and vulnerability. The unvegetated-vegetated marsh ratio (UVVR), a recently developed metric, can be used to establish present-day vegetative cover, identify stability thresholds, and quantify vulnerability...
Adaptive management framework and decision support tool for invasive annual bromes in seven Northern Great Plains National Park Service units
Amy Symstad, Heather Baldwin, Max Post van der Burg
2022, Natural Resource Report NPS/NGPN/NRR-2022/2381
National Park Service (NPS) units in the northern Great Plains (NGP) were established to preserve and interpret the history of the United States, protect and showcase unusual geology and paleontology, and provide a home for vanishing large wildlife. A unifying feature among these national parks, monuments, and historic sites is...
Highly specialized recreationists contribute the most to the citizen science project eBird
Connor J. Rosenblatt, Ashley A. Dayer, Jennifer N. Duberstein, Tina B. Phillips, H. W. Harshaw, David C. Fulton, Nicholas W. Cole, Andrew H. Raedeke, Jonathan D. Rutter, Christopher L. Wood
2022, Ornithological Applications (124)
Contributory citizen science projects (hereafter “contributory projects”) are a powerful tool for avian conservation science. Large-scale projects such as eBird have produced data that have advanced science and contributed to many conservation applications. These projects also provide a means to engage the public in scientific data collection. A common challenge...
Estimated daily mean streamflow in Iowa using the Flow-Duration Curve Transfer Method StreamStats application
Mackenzie K. Marti, Harper N. Wavra, Andrea Medenblik
2022, Newsletter
The U.S. Geological Survey (USGS) operates many streamgages throughout the country that provide historical and real-time daily streamflow information. Accurate estimates of daily streamflow and the percentage of time that a certain volume of streamflow occurs or is exceeded in a stream is crucial information for structure design and other...
