Integrating tracking and resight data enables unbiased inferences about migratory connectivity and winter range survival from archival tags
Clark S Rushing, Aimee M Van Tatenhove, Andrew Sharp, Viviana Ruiz-Gutierrez, Mary Freeman, Paul W. Sykes, Aaron M. Given, T. Scott Sillett
2021, Ornithological Applications (123)
Archival geolocators have transformed the study of small, migratory organisms but analysis of data from these devices requires bias correction because tags are only recovered from individuals that survive and are re-captured at their tagging location. We show that integrating geolocator recovery data and mark–resight data enables unbiased estimates of...
Range expansion and factors affecting abundance of invasive Flathead Catfish in the Delaware and Susquehanna Rivers, Pennsylvania, USA
Geoffrey D. Smith, Danielle L. Massie, Joseph Perillo, Tyler Wagner, Daryl Pierce
2021, North American Journal of Fisheries Management (41) S205-S220
Flathead Catfish Pylodictis olivaris have been either intentionally or accidentally introduced into Atlantic Slope drainages extending from Florida to Pennsylvania and have quickly become established. In Pennsylvania, Flathead Catfish were first detected in the Schuylkill River at the Fairmont Dam in 1999 and in the Susquehanna River at Safe Harbor Dam in...
Connectivity of Mojave Desert tortoise populations—Management implications for maintaining a viable recovery network
Roy C. Averill-Murray, Todd Esque, Linda J. Allison, Scott Bassett, Sarah K. Carter, Kirsten E. Dutcher, Steven J. Hromada, Kevin T. Shoemaker, Kenneth E. Nussear
2021, Open-File Report 2021-1033
Executive SummaryThe historic distribution of Mojave desert tortoises (Gopherus agassizii) was relatively continuous across the range, and the importance of tortoise habitat outside of designated tortoise conservation areas (TCAs) to recovery has long been recognized for its contributions to supporting gene flow between TCAs and to minimizing impacts and edge...
Long-term multidecadal data from a prairie-pothole wetland complex reveal controls on aquatic-macroinvertebrate communities
Kyle McLean, David M. Mushet, Wesley E. Newton, Jon N. Sweetman
2021, Ecological Indicators (126)
Interactions between climate and hydrogeologic settings contribute to the hydrologic and chemical variability among depressional wetlands, which influences their aquatic communities. These interactions and resulting variability have led to inconsistent results in terms of identifying reliable predictors of aquatic-macroinvertebrate community composition for depressional wetlands. This is especially true in the...
Exploring the contemporary relationship between predator and prey in a significant, reintroduced Lahontan Cutthroat Trout population
Phaedra E. Budy, Nicholas A. Heredia, Gary P. Thiede, Erik Horgen
2021, Transactions of the American Fisheries Society (150) 291-306
Lahontan Cutthroat Trout (LCT) Oncorhynchus clarkii henshawi have experienced some of the most marked reductions in abundance and distribution among Cutthroat Trout subspecies. The population of LCT in Pyramid Lake, Nevada has returned from the brink of extirpation, and although it is highly managed via stocking, the population is thriving and has...
On the human appropriation of wetland primary production
James E. Cloern, Samuel M. Safran, Lydia Smith Vaughn, April Robinson, Alison Whipple, Katharyn E. Boyer, Judith Z. Drexler, Robert J. Naiman, James L. Pinckney, Emily R. Howe, Elizabeth A. Canuel, J. Letitia Grenier
2021, Science of the Total Environment (785)
Humans are changing the Earth's surface at an accelerating pace, with significant consequences for ecosystems and their biodiversity. Landscape transformation has far-reaching implications including reduced net primary production (NPP) available to support ecosystems, reduced energy supplies to consumers, and disruption of ecosystem services such...
Substantial hysteresis in emergent temperature sensitivity of global wetland CH4 emissions
Kuang-Yu Chang, William J. Riley, Sara H. Knox, Robert B. Jackson, Gavin McNicol, Benjamin Poulter, Mika Aurela, Dennis Baldocchi, Sheel Bansal, Gil Bohrer, David I. Campbell, Alessandro Cescatti, Housen Chu, Kyle B. Delwiche, Ankur R. Desai, Eugenie S. Euskirchen, Matthias Goeckede, Thomas Friborg, Kyle S. Hemes, Takashi Hirano, Hiroki Iwata, Manuel Helbig, Trevor F. Keenan, Minseok Kang, Ken Krauss, Annalea Lohila, Bhaskar Mitra, Ivan Mammarella, Akira Miyata, Mats B. Nilsson, Walter C. Oechel, Akso Noormets, Matthias Peichl, Michele L. Reba, Janne Rinne, Dario Papale, Benjamin R. K. Runkle, Youngryel Ryu, Torsten Sachs, Karina VR Schafer, Hans Peter Schmid, Narasinha Shurpali, Oliver Sonnentag, Angela Tang, Margaret S. Torn, Eeva-Stiina Tuittila, Carlo Trotta, Masahito Ueyama, Rodrigo Vargas, Timo Vesala, Lisamarie Windham-Myers, Zhen Zhang, Donatella Zona
2021, Nature Communications (12)
Wetland methane (CH4) emissions (FCH4) are important in global carbon budgets and climate change assessments. Currently, FCH4 projections rely on prescribed static temperature sensitivity that varies among biogeochemical models. Meta-analyses have proposed a consistent FCH4 temperature...
Remote ecological monitoring with smartphones and tasker
Therese M. Donovan, Cathleen Balantic, Jonathan Katz, Mark Massar, Randy Knutson, Kara Duh, Peter Jones, Keith Epstein, Julien Lacasse-Roger, João Dias
2021, Journal of Fish and Wildlife Management (12) 163-173
Researchers have increasingly used autonomous monitoring units to record animal sounds, track phenology with timed photographs, and snap images when triggered by motion. We piloted the use of smartphones to monitor wildlife in the Riverside East Solar Energy Zone (California) and at Indiana Dunes National Park (Indiana). For both efforts,...
The productivity of Cascadia aftershock sequences
Joan S. Gomberg, Paul Bodin
2021, Bulletin of the Seismological Society of America (111) 1494-1507
This study addresses questions about the productivity of Cascadia mainshock–aftershock sequences using earthquake catalogs produced by the Geological Survey of Canada and the Pacific Northwest Seismic Network. Questions concern the likelihood that future moderate to large intermediate depth intraslab earthquakes in Cascadia would have as few detectable aftershocks as those...
Regional calibration of hybrid ground‐motion simulations in moderate seismicity areas: Application to the Upper Rhine Graben
Hoby N. T. Razafindrakoto, Fabrice Cotton, Dino Bindi, Marco Pilz, Robert Graves, Sanjay Bora
2021, Bulletin of the Seismological Society of America (111) 1422-1444
This study presents the coupling of the spectral decomposition results for anelastic attenuation, stress drop, and site effects with the Graves‐Pitarka (GP) hybrid ground‐motion simulation methodology, as implemented on the Southern California Earthquake Center (SCEC) broadband platform (BBP). It is targeted to applications in the...
Foraging in marine habitats increases mercury concentrations in a generalist seabird
Corey A. Clatterbuck, Rebecca L. Lewison, Rachael A Orben, Joshua T. Ackerman, Leigh G Torres, Robert M. Suryan, Peter Warzybok, Jaime Jahncke, Scott A. Shaffer
2021, Chemosphere (279)
Methylmercury concentrations vary widely across geographic space and among habitat types, with marine and aquatic-feeding organisms typically exhibiting higher mercury concentrations than terrestrial-feeding organisms. However, there are few model organisms to directly compare mercury concentrations as a result of foraging in marine, estuarine, or terrestrial food webs. The ecological impacts of...
Regression relations and long-term water-quality constituent concentrations, loads, yields, and trends in the North Fork Ninnescah River, south-central Kansas, 1999–2019
Ariele R. Kramer, Brian J. Klager, Mandy L. Stone, Patrick J. Eslick-Huff
2021, Scientific Investigations Report 2021-5006
Cheney Reservoir, in south-central Kansas, is the primary water supply for the city of Wichita, Kansas. The North Fork Ninnescah River is the largest tributary to Cheney Reservoir and contributes about 70 percent of the inflow. The U.S. Geological Survey, in cooperation with the City of Wichita, has been continuously...
Abundance of a recently discovered Alaskan rhodolith bed in a shallow, seagrass-dominated lagoon
David H. Ward, Courtney Amundson, Patrick Fitzmorris, Damian M. Menning, Joel Markis, Kristine M. Sowl, Sandra C. Lindstrom
2021, Botanica Marina (64) 119-127
Rhodoliths are important foundation species of the benthic photic zone but are poorly known and rarely studied in Alaska. A bed of Lithothamnion soriferum rhodoliths was discovered in 2008 in Kinzarof Lagoon, Alaska, a shallow-water embayment dominated by eelgrass (Zostera marina). Rhodolith presence and biomass were estimated to...
Predicted vulnerability of carbon in permafrost peatlands With future climate change and permafrost thaw in western Canada
Claire C. Treat, Miriam C. Jones, Jay R. Alder, A. Britta K. Sannel, Philip Camill, Steve Frolking
2021, JGR Biogeosciences (126)
Climate warming in high-latitude regions is thawing carbon-rich permafrost soils, which can release carbon to the atmosphere and enhance climate warming. Using a coupled model of long-term peatland dynamics (Holocene Peat Model, HPM-Arctic), we quantify the potential loss of carbon with future climate warming for six sites with differing climates...
Regional target loads of atmospheric nitrogen and sulfur deposition for the protection of stream and watershed soil resources of the Adirondack Mountains, USA
Todd C. McDonnell, Charles T. Driscoll, Timothy J. Sullivan, Douglas A. Burns, Barry P. Baldigo, Shuai Shao, Gregory B. Lawrence
2021, Environmental Pollution (281)
Acidic deposition contributes to a range of environmental impacts across forested landscapes, including acidification of soil and drainage water, toxic aluminum mobilization, depletion of available soil nutrient cations, and impacts to forest and aquatic species health and biodiversity. In response to decreasing levels of...
Exploring the regional dynamics of U.S. irrigated agriculture from 2002 to 2017
Dinesh Shrestha, Jesslyn F. Brown, Trenton D Benedict, Daniel Howard
2021, Land (10) 394
The United States has a geographically mature and stable land use and land cover system including land used as irrigated cropland; however, changes in irrigation land use frequently occur related to various drivers. We applied a consistent methodology at a 250 m spatial resolution across the lower 48 states to...
Alternating wet and dry depositional environments recorded in the stratigraphy of Mt Sharp at Gale Crater, Mars
William Rapin, Gilles Dromart, Dave Rubin, Laticia Le Deit, Nicolas Mangold, Lauren A. Edgar, Olivier Gasnault, Kenneth E. Herkenhoff, S. Lemouelic, Ryan B. Anderson, S. Maurice, V. Fox, B. L. Ehlmann, J. L. Dickson, R. C. Wiens
2021, Geology (49) 842-846
The Curiosity rover is exploring Hesperian-aged stratigraphy in Gale crater, Mars, where a transition from clay-bearing units to a layered sulfate-bearing unit has been interpreted to represent a major environmental transition of unknown character. We present the first description of key facies in the sulfate-bearing unit, recently observed in the...
Genetic considerations for rewilding the San Joaquin Desert
Jonathan Q. Richmond, Dustin A. Wood, Marjorie D Matocq
2021, Book chapter, Rewilding agricultural landscapes: a California study in rebalancing the needs of people and nature
Genetic data are a powerful and important tool for guiding rewilding efforts and for monitoring the recovery outcomes of those efforts. When used in conjunction with historic species’ distribution records and predictive habitat suitability modeling, genetic information adds a key piece to the puzzle that will increase the probability of...
Reconstructing the dynamics of the highly similar May 2016 and June 2019 Iliamna Volcano, Alaska ice–rock avalanches from seismoacoustic data
Liam Toney, David Fee, Kate E. Allstadt, Matthew M. Haney, Robin S. Matoza
2021, Earth Surface Dynamics (9) 271-293
Surficial mass wasting events are a hazard worldwide. Seismic and acoustic signals from these often remote processes, combined with other geophysical observations, can provide key information for monitoring and rapid response efforts and enhance our understanding of event dynamics. Here, we present seismoacoustic data and analyses for two very large...
Balancing the need for seed against invasive species risks in prairie habitat restorations
Jennifer L Larson, Diane L. Larson, Robert Venette
2021, PLoS ONE (16)
Adequate diversity and abundance of native seed for large-scale grassland restorations often require commercially produced seed from distant sources. However, as sourcing distance increases, the likelihood of inadvertent introduction of multiple novel, non-native weed species as seed contaminants also increases. We created a model to determine...
Evaluation of connectivity among black bear populations in Georgia
Michael J. Hooker, Joseph D. Clark, Bobby T Bond, Michael J Chamberlain
2021, Journal of Wildlife Management (85) 979-988
Habitat fragmentation and loss contribute to isolation of wildlife populations and increased extinction risks for various species, including many large carnivores. We studied a small and isolated population of American black bears (Ursus americanus) that is of conservation concern in central Georgia, USA (i.e., central Georgia...
Effects of supplemental feeding on the fecal bacterial communities of Rocky Mountain elk in the Greater Yellowstone Ecosystem
Claire E Couch, Benjamin Wise, Brandon Scurlock, Jared D. Rogerson, Rebecca K. Fuda, Eric K Cole, Kimberly E Szcodronski, Adam Sepulveda, Patrick R. Hutchins, Paul C. Cross
2021, PLoS ONE (16)
Supplemental feeding of wildlife is a common practice often undertaken for recreational or management purposes, but it may have unintended consequences for animal health. Understanding cryptic effects of diet supplementation on the gut microbiomes of wild mammals is important to inform conservation and management strategies. Multiple laboratory studies have demonstrated...
A new addition to the embalmed fauna of ancient Egypt: Güldenstaedt’s White-toothed Shrew, Crocidura gueldenstaedtii (Pallas, 1811) (Mammalia: Eulipotyphla: Soricidae)
Neal Woodman, Salima Ikram, Joanne Rowland
2021, PLoS ONE (16)
The Falcon Necropolis at Quesna in the Nile Delta of Egypt is considered to have been founded by the priest Djedhor, the Saviour, of Athribis (Tell Atrib in modern Benha) at the beginning of the Ptolemaic Period. Recent excavations here have revealed abundant avian remains from...
Unsaturated flow processes and the onset of seasonal deformation in slow-moving landslides
Noah J. Finnegan, Jonathan P. Perkins, Alexander Lewis Nereson, Alexander L. Handwerger
2021, Journal of Geophysical Research: Earth Surface (126)
Predicting rainfall-induced landslide motion is challenging because shallow groundwater flow is extremely sensitive to the preexisting moisture content in the ground. Here, we use groundwater hydrology theory and numerical modeling combined with five years of field monitoring to illustrate how unsaturated groundwater flow processes modulate the seasonal...
A reassessment of Chao2 estimates for population monitoring of grizzly bears in the Greater Yellowstone Ecosystem
Frank T. van Manen, Michael R. Ebinger, Mark A. Haroldson, Daniel D. Bjornlie, Justin Clapp, Daniel J. Thompson, Kevin L. Frey, Cecily M. Costello, Curtis Hendricks, Jeremy M. Nicholson, Kerry A. Gunther, Katharine R. Wilmot, Hilary Cooley, Jennifer Fortin-Noreus, Pat Hnilicka, Daniel B. Tyers
2021, Report
The Yellowstone Ecosystem Subcommittee (YES) asked the Interagency Grizzly Bear Study Team (IGBST) to re-assess a technique used in annual population estimation and trend monitoring of grizzly bears in the Greater Yellowstone Ecosystem (GYE). This technique is referred to as the Chao2 approach and estimates the number of females with...
