Evaluating stereo digital terrain model quality at Mars Rover Landing Sites with HRSC, CTX, and HiRISE Images
Randolph L. Kirk, David Mayer, Robin L. Fergason, Bonnie L. Redding, Donna M. Galuszka, Trent M. Hare, Klaus Gwinner
2021, Remote Sensing (13)
We have used high-resolution digital terrain models (DTMs) of two rover landing sites based on mosaicked images from the High-Resolution Imaging Science Experiment (HiRISE) camera as a reference to evaluate DTMs based on High-Resolution Stereo Camera (HRSC) and Context Camera (CTX) images. The Next-Generation Automatic Terrain Extraction...
Simulated effects of sea-level rise on the shallow, fresh groundwater system of Assateague Island, Maryland and Virginia
Brandon J. Fleming, Jeff P. Raffensperger, Phillip J. Goodling, John P. Masterson
2021, Scientific Investigations Report 2020-5104
The U.S. Geological Survey, in cooperation with the National Park Service, developed a three-dimensional groundwater-flow model for Assateague Island in eastern Maryland and Virginia to assess the effects of sea-level rise on the groundwater system. Sea-level rise is expected to increase the altitude of the water table in barrier island...
Landscape features fail to explain spatial genetic structure in white-tailed deer across Ohio, USA
Javan M. Bauder, Christine S. Anderson, H. Lisle Gibbs, Michael J. Tonkovich, W. David Walter
2021, Journal of Wildlife Management (85) 1669-1684
Landscape features influence wildlife movements across spatial scales and have the potential to influence the spread of disease. Chronic wasting disease (CWD) is a fatal prion disease affecting members of the family Cervidae, particularly white-tailed deer (Odocoileus virginianus), and the first positive CWD case in a wild deer in Ohio,...
Growth of greater white-fronted goose goslings relates to population dynamics at multiple scales
Thomas F Fondell, Brandt W. Meixell, Paul L. Flint
2021, Journal of Wildlife Management (85) 1591-1600
The abundance of greater white-fronted geese (Anser albifrons frontalis) on the Arctic Coastal Plain (ACP) of northern Alaska, USA, has more than tripled since the late 1990s; however, recent rate of annual population growth has declined as population size increased, which may indicate white-fronted geese on the ACP are approaching...
Gut microbiota associated with different sea lamprey (Petromyzon marinus) life stages
P Mathai, Muruleedhara Byappanahalli, Nicholas S. Johnson, Michael J. Sadowsky
2021, Frontiers in Microbiology (12)
Sea lamprey (SL; Petromyzon marinus), one of the oldest living vertebrates, have a complex metamorphic life cycle. Following hatching, SL transition into a microphagous, sediment burrowing larval stage, and after 2–10+ years, the larvae undergo a dramatic metamorphosis, transforming into parasitic juveniles that feed on blood and bodily fluids of fishes;...
Watershed sediment yield following the 2018 Carr Fire, Whiskeytown National Recreation Area, northern California
Amy E. East, Joshua B. Logan, Peter Dartnell, Oren Lieber-Kotz, David B. Cavagnaro, Scott W. McCoy, Donald N. Lindsay
2021, Earth and Space Science (8)
Wildfire risk has increased in recent decades over many regions, due to warming climate and other factors. Increased sediment export from recently burned landscapes can jeopardize downstream infrastructure and water resources, but physical landscape response to fire has not been quantified for some at-risk areas, including much...
Labeling poststorm coastal imagery for machine learning: Measurement of interrater agreement
Evan B. Goldstein, Daniel D. Buscombe, Eli D. Lazarus, Somya Mohanty, Shah N. Rafique, K A Anarde, Andrew D Ashton, Tomas Beuzen, Katherine A. Castagno, Nicholas Cohn, Matthew P. Conlin, Ashley Ellenson, Megan Gillen, Paige A. Hovenga, Jin-Si R. Over, Rose V. Palermo, Katherine Ratlif, Ian R Reeves, Lily H. Sanborn, Jessamin A. Straub, Luke A. Taylor, Elizabeth J. Wallace, Jonathan A. Warrick, Phillipe Alan Wernette, Hannah E Williams
2021, Earth and Space Science (8)
Classifying images using supervised machine learning (ML) relies on labeled training data—classes or text descriptions, for example, associated with each image. Data-driven models are only as good as the data used for training, and this points to the importance of high-quality labeled data for developing a ML...
Non-native poeciliids in hot water: The role of thermal springs in facilitating invasion of tropical species
Quenton M. Tuckett, Katelyn M. Lawson, Taylor N. Lipscomb, Jeffrey E. Hill, Wesley M. Daniel, Zachary A. Siders
2021, Hydrobiologia (848) 4731-4745
Livebearers in the family Poeciliidae are some of the most widely introduced fishes. Native poeciliid translocations within the U.S. are mostly due to deliberate stocking for mosquito control. Introductions of exotic poeciliids, those not native to the U.S., are more likely to be due to release...
Diel patterns of pheromone release by male sea lamprey
Skye D. Fissette, Ugo Bussy, Belinda Huerta, Cory O. Brant, Ke Li, Nicholas S. Johnson, Weiming Li
2021, Integrative and Comparative Biology (61) 1795-1810
Costs to producing sexual signals can create selective pressures on males to invest signaling effort in particular contexts. When the benefits of signaling vary consistently across time, males can optimize signal investment to specific temporal contexts using biological rhythms. Sea lamprey, Petromyzon marinus, have a semelparous life history, are primarily...
Individual variation in temporal dynamics of post-release habitat selection
Simona Picardi, Nathan Ranc, Brian J. Smith, Peter S. Coates, Steven R. Mathews, David K. Dahlgren
2021, Frontiers in Conservation Science (2)
Translocated animals undergo a phase of behavioral adjustment after being released in a novel environment, initially prioritizing exploration and gradually shifting toward resource exploitation. This transition has been termed post-release behavioral modification. Post-release behavioral modification may also manifest as changes in habitat selection through time, and these temporal dynamics...
Small mammal shooting as a conduit for lead exposure in avian scavengers
Garth Herring, Collin A. Eagles-Smith, John Goodell, Jeremy A. Buck, James Willacker
2021, Environmental Science and Technology (55) 12272-12280
Lead (Pb) exposure is a widespread wildlife conservation threat. Although commonly associated with Pb-based ammunition from big-game hunting, small mammals (e.g., ground squirrels) shot for recreational or pest-management purposes represent a potentially important Pb vector in agricultural regions. We measured the responses of avian scavengers to pest-shooting events and examined...
Unexpected diversity of Endozoicomonas in deep-sea corals
Christina A. Kellogg, Zoe A. Pratte
2021, Marine Ecology Progress Series (673) 1-15
ABSTRACT: The deep ocean hosts a large diversity of azooxanthellate cold-water corals whose associated microbiomes remain to be described. While the bacterial genus Endozoicomonas has been widely identified as a dominant associate of tropical and temperate corals, it has rarely been detected in deep-sea corals. Determining microbial baselines for these cold-water...
Historical changes in plant water use and need in the continental United States
Michael T Terck, David Thoma, John E. Gross, Kirk R. Sherrill, Stefanie Kagone, Gabriel B. Senay
2021, PLoS ONE (16)
A robust method for characterizing the biophysical environment of terrestrial vegetation uses the relationship between Actual Evapotranspiration (AET) and Climatic Water Deficit (CWD). These variables are usually estimated from a water balance model rather than measured directly and are often more representative of ecologically-significant changes than...
Insect-mediated contaminant flux at the land–water interface: Are ecological subsidies driving exposure or is exposure driving subsidies?
Johanna M. Kraus, Jeff S. Wesner, David Walters
2021, Environmental Toxicology and Chemistry (40) 2953-2958
Chemical contamination of freshwaters is a global problem. In the United States alone, millions of kilometers of rivers and hectares of lakes and wetlands are impaired from contamination by chemicals including mercury, pesticides, polychlorinated biphenyls (PCBs), and trace metals (US Environmental Protection Agency, 2017). Efforts to mitigate the risks of contamination...
Modelling tilt noise caused by atmospheric processes at long periods for several horizontal seismometers at BFO—A reprise
W. Zurn, T. Forbriger, R. Widmer-Schnidrig, P. Duffner, Adam T. Ringler
2021, Geophysical Journal International (228) 927-943
Tilting of the ground due to loading by the variable atmosphere is known to corrupt very long period horizontal seismic records (below 10 mHz) even at the quietest stations. At BFO (Black Forest Observatory, SW-Germany), the opportunity arose to study these disturbances on a variety of simultaneously operated state-of-the-art...
Precipitation-runoff processes in the Merced River Basin, Central California, with prospects for streamflow predictability, water years 1952–2013
Kathryn M. Koczot, John C. Risley, JoAnn M. Gronberg, John M. Donovan, Kelly R. McPherson
2021, Scientific Investigations Report 2020-5150
The U.S. Geological Survey, in cooperation with the California Department of Water Resources (DWR), has constructed a new spatially detailed Precipitation-Runoff Modeling System (PRMS) model for the Merced River Basin, California, which is a tributary of the San Joaquin River in California. Operated through an Object User Interface (OUI) with...
Occurrence, fate, and transport of aerially applied herbicides to control invasive buffelgrass within Saguaro National Park Rincon Mountain District, Arizona, 2015–18
Nicholas V. Paretti, Kimberly R. Beisner, Bruce Gungle, Michael T. Meyer, Bethany K. Kunz, Edyth Hermosillo, Jay R. Cederberg, Justine P. Mayo
2021, Scientific Investigations Report 2021-5039
The spread of the invasive and fire-adapted buffelgrass (Cenchrus ciliaris L.) threatens desert ecosystems by competing for resources, increasing fuel loads, and creating wildfire connectivity. The Rincon Mountain District of Saguaro National Park addressed this natural resource threat with the use of glyphosate-based herbicides (GBHs). In 2010, the Rincon Mountain...
What do you mean by false positive?
John A. Darling, Christopher L. Jerde, Adam Sepulveda
2021, Environmental DNA (3) 879-883
Misunderstandings regarding the term “false positive” present a significant hurdle to broad adoption of eDNA monitoring methods. Here, we identify three challenges to clear communication of false-positive error between scientists, managers, and the public. The first arises from a failure to distinguish between false-positive eDNA detection at the sample level...
Incorporating uncertainty into groundwater salinity mapping using AEM data
Lyndsay B. Ball, Burke J. Minsley
2021, Conference Paper, First international meeting for applied geoscience & energy expanded abstracts
Airborne electromagnetic surveys provide spatially extensive resistivity information that can be useful for groundwater salinity mapping; however, the transformation from geophysical data to salinity interpretations carries uncertainty. We compare two quantitative approaches to salinity mapping recently applied to address water resource management objectives: the location of the depth to the...
G-LiHT user guide
Bradford Wirt
2021, Book
No abstract available....
LakeEnsemblR: An R package that facilitates ensemble modelling of lakes
Tadhg N. Moore, Jorrit P. Mesman, Robert Ladwig, Johannes Feldbauer, Freya Olsson, Rachel M. Pilla, Tom Shatwell, Jason J. Venkiteswaran, Austin D. Delany, Hilary Dugan, Kevin C. Rose, Jordan Read
2021, Environmental Modelling & Software (143)
Model ensembles have several benefits compared to single-model applications but are not frequently used within the lake modelling community. Setting up and running multiple lake models can be challenging and time consuming, despite the many similarities between the existing models (forcing data, hypsograph, etc.). Here we present an R package,...
Aquatic-terrestrial linkages control metabolism and carbon dynamics in a mid-sized, urban stream influenced by snowmelt
Ariel P. Reed, Edward G. Stets, Sheila F. Murphy, Emily Mullins
2021, Journal of Geophysical Research Biogeosciences (126)
Freshwater streams can exchange nutrients and carbon with the surrounding terrestrial environment through various mechanisms including physical erosion, flooding, leaf drop, and snowmelt. These aquatic-terrestrial interactions are crucial in carbon mobilization, transformation, ecosystem productivity, and have important implications for the role of freshwater ecosystems in the global carbon budget. We...
Redefining the age of the lower Colorado River, southwestern United States: Comment
Rebecca J. Dorsey, Gary J. Axen, Martin J. Grove, Bernard Housen, George Jefferson, Kristin McDougall-Reid, Lyndon Murray, Michael E. Oskin, Tom Peryam, Jolante W. van Wijk, Elaine Young
2021, Geology (49)
No abstract available....
Field methods for translocating female greater sage-grouse (Centrocercus urophasianus) with their broods
Mary Beth Meyerpeter, Kade D. Lazenby, Peter S. Coates, Mark A. Ricca, Steven R. Mathews, Scott C. Gardner, David K. Dahlgren, David J. Delehanty
2021, Wildlife Society Bulletin (45) 529-537
Greater sage-grouse (Centrocercus urophasianus) have experienced considerable range contraction and reduced abundance in response to habitat loss and degradation. Translocation is a conservation action that is often used to reintroduce extirpated populations or augment existing small populations. Translocations have had limited success in restoring viable populations of sage-grouse; a lack...
Food, culture and climate
Ariela Zycherman, Emily Brooks, Amber Campbell, Brianna Farber, Matthew David Jurjonas, Austin Scheetz
2021, Report
The Social Sciences Coordinating Committee (SSCC) is one of multiple Interagency Groups that support the U.S. Global Change Research Program (USGCRP). USGCRP began as a Presidential initiative in 1989 and was mandated by Congress through the U.S. Global Change Research Act of 1990 “to assist the Nation and the world...
