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...
Isotope fractionation from In Vivo methylmercury detoxification in waterbirds
Brett Poulin, Sarah Elizabeth Janssen, Tylor Rosera, David P. Krabbenhoft, Collin A. Eagles-Smith, Joshua T. Ackerman, Robin Stewart, Eunhee Kim, Zofia Baumann, Jeong-Hoon Kim, Alain Manceau
2021, ACS Earth and Space Chemistry (5) 990-997
The robust application of stable mercury (Hg) isotopes for mercury source apportionment and risk assessment necessitates the understanding of mass-dependent fractionation (MDF) due to internal transformations within organisms. Here, we used high energy-resolution XANES spectroscopy and isotope ratios of total mercury (δ202THg) and methylmercury (δ202MeHg) to elucidate the chemical speciation...
Effects of midazolam on corticosterone and blood gases in spectacled eiders prior to transmitter implantation
Maria Spriggs, Daniel Rizzolo, Kate Martin, Gwen E. Myers, Matthew G. Sexson
2021, Journal of Wildlife Management (85) 909-919
Stress and physical exertion may affect the physiology and behavior of wildlife during and after capture, and consequently, survival following release. Such effects may reduce the quality and quantity of the data obtained from captured wildlife. We captured spectacled eiders (Somateria fischeri), a species listed as...
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...
Impact of "non-lethal" tarsal clipping on bumble bees (Bombus vosnesenskii) may depend on queen stage and worker size
John Michael Mola, Clara Stuligross, Maureen L. Page, Danielle Rutkowski, Neal M. Williams
2021, Journal of Insect Conservation (25) 195-201
Recent bumble bee declines have prompted the development of novel population monitoring tools, including the use of putatively non-lethal tarsal clipping to obtain genetic material. However, the potential side effects of tarsal clipping have only been tested in the worker caste of a single domesticated species, prompting the need to...
Roads less travelled by— Pleistocene piracy in Washington’s northwestern Channeled Scabland
Richard B. Waitt
Richard B. Waitt, Glenn D. Thackray, Alan R. Gillespie, editor(s)
2021, Book chapter, Untangling the Quaternary period—A legacy of Stephen C. Porter
The Pleistocene Okanogan lobe of Cordilleran ice in north-central Washington State dammed Columbia River to pond glacial Lake Columbia and divert the river south across one or another low spot along a 230-km-long drainage divide. When enormous Missoula floods from the east briefly engulfed the lake, water poured across a...
Executive summary and annotated bibliography of selected references from “Microbial and viral indicators of pathogens and human health risks from recreational exposure to waters impaired by fecal contamination” with related project ideas for Gwinnett County, Georgia
Anna M. McKee, Marcella A. Cruz
2021, Open-File Report 2021-1028
This document was prepared in cooperation with Gwinnett County, Georgia, to supplement the journal article “Microbial and Viral Indicators of Pathogens and Human Health Risks from Recreational Exposure to Waters Impaired by Fecal Contamination” (published in Journal of Sustainable Water in the Built Environment). The document includes an...
The extent and variability of storm‐induced temperature changes in lakes measured with long‐term and high‐frequency data
Jonathan P. Doubek, Orlane Anneville, Gael Dur, Aleksandra M. Lewandowska, Vijay P. Patil, James A. Rusak, Nico Salmaso, Christian T. Seltmann, Dietmar Straile, Pablo Urrutia-Cordero, Patrick Venail, Rita Adrian, Maria B. Alfonso, Curtis L. DeGasperi, Elvira de Eyto, Heidrun Feuchtmayr, Evelyn Gaiser, Scott F Girdner, Jennifer L. Graham, Hans-Peter Grossart, Josef Hejzlar, Stephan Jacquet, Georgiy Kirillin, Maria E. Llames, Shin-Ichiro S. Matsuzaki, Emily Nodine, Maria Cintia Piccolo, Donald C. Pierson, Alon Rimmer, Lars G. Rudstam, Steven Sadro, Hilary M. Swain, Stephen J. Thackeray, Wim Thiery, Piet Verburg, Tamar Zohary, Jason D. Stockwell
2021, Limnology and Oceanography (66) 1979-1992
The intensity and frequency of storms are projected to increase in many regions of the world because of climate change. Storms can alter environmental conditions in many ecosystems. In lakes and reservoirs, storms can reduce epilimnetic temperatures from wind‐induced mixing with colder hypolimnetic waters, direct precipitation...
Diagenesis revealed by fine-scale features at Vera Rubin ridge, Gale crater, Mars
Kristen A. Bennett, Frances Rivera-Hernandez, Connor Tinker, Briony H. N. Horgan, Deirdra M. Fey, C. S. Edwards, Lauren A. Edgar, Rachel Kronyak, Kenneth S. Edgett, Abigail A. Fraeman, Linda C. Kah, Marie Henderson, Nathan Stein, Erwin Dehouck, Amy Williams
2021, JGR Planets (126)
Fine-scale (submillimeter to centimeter) depositional and diagenetic features encountered during the Curiosity rover's traverse in Gale crater provide a means to understand the geologic history of Vera Rubin ridge (VRR). VRR is a topographically high feature on the lower north slope of Aeolis Mons, a 5-km high stratified mound...
Stable oxygen isotopes in shallow marine ostracodes from the northern Bering and Chukchi Seas
Laura Gemery, L.W. Cooper, C Magen, T. M. Cronin, J.M. Grebmeier
2021, Marine Micropaleontology (165)
Stable oxygen isotope measurements on calcitic valves of benthic ostracodes (δ18Oost) from the northern Bering and Chukchi Seas were used to examine ecological and hydrographic processes governing ostracode and associated seawater δ18O values. Five cryophilic taxa were analyzed for δ18Oost values: Sarsicytheridea bradii; Paracyprideis pseudopunctillata; Heterocyprideis sorbyana; Heterocyprideis fascis; and...
Earthquakes indicated magma viscosity during Kīlauea’s 2018 eruption
Diana Roman, Arianna Soldati, Donald Bruce Dingwell, Bruce F. Houghton, Brian Shiro
2021, Nature (592) 237-241
Magma viscosity strongly controls the style (for example, explosive versus effusive) of a volcanic eruption and thus its hazard potential, but can only be measured during or after an eruption. The identification of precursors indicative of magma viscosity would enable forecasting of the eruption style and...
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...
Using enclosed Y-mazes to assess chemosensory behavior in reptiles
M. Rockwell Parker, Andrea Faye Currylow, Eric A. Tillman, Charlotte J. Robinson, Jillian Maureen Josimovich, Isabella M.G. Bukovich, Lauren A. Nazarian, Melia G. Nafus, Bryan M. Kluever, Amy A. Yackel Adams
2021, Journal of Visualized Experiments (170)
Reptiles utilize a variety of environmental cues to inform and drive animal behavior such as chemical scent trails produced by food or conspecifics. Decrypting the scent-trailing behavior of vertebrates, particularly invasive species, enables the discovery of cues that induce exploratory behavior and can aid in the development of valuable basic...
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...
Editorial: Science and applications of coastal remote sensing
Kevin R. Turpie, Steven G. Ackleson, Kristin B. Byrd, Tiffany K. Moisan
2021, Frontiers in Marine Science (8)
No abstract available....
The American Kestrel (Falco sparverius) genoscape: Implications for monitoring, management, and subspecies boundaries
K. C. Ruegg, M. Brinkmeyer, C. M. Bossu, R. Bay, E. C. Anderson, Clint W. Boal, R. D. Dawson, A. Eschenbauch, C. J. W. McClure, K. E. Miller, L. Morrow, J. R. Morrow, M. D. Oleyar, B. Ralph, S. Schulwitz, T. Swem, J. F. Therrien, Rich Van Buskirk, T. B. Smith, J. A. Heath
J-F. Therrien, editor(s)
2021, Ornithology (138)
Identifying population genetic structure is useful for inferring evolutionary process and comparing the resulting structure with subspecies boundaries can aid in species management. The American Kestrel (Falco sparverius) is a widespread and highly diverse species with 17 total subspecies, only 2 of which are found north of U.S./Mexico border (F....
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...
Weather affects post‐fire recovery of sagebrush‐steppe communities and model transferability among sites
Cara Applestein, Trevor Caughlin, Matthew J. Germino
2021, Ecosphere (12)
Altered climate, including weather extremes, can cause major shifts in vegetative recovery after disturbances. Predictive models that can identify the separate and combined temporal effects of disturbance and weather on plant communities and that are transferable among sites are needed to guide vulnerability assessments and management...
Machine-learning predictions of high arsenic and high manganese at drinking water depths of the glacial aquifer system, northern continental United States
Melinda L. Erickson, Sarah M. Elliott, Craig J. Brown, Paul E. Stackelberg, Katherine Marie Ransom, James E. Reddy, Charles A. Cravotta III
2021, Environmental Science & Technology (9) 5791-5805
Globally, over 200 million people are chronically exposed to arsenic (As) and/or manganese (Mn) from drinking water. We used machine-learning (ML) boosted regression tree (BRT) models to predict high As (>10 μg/L) and Mn (>300 μg/L) in groundwater from the glacial...
Identifying resting locations of a small elusive forest carnivore using a two-stage model accounting for GPS measurement error and hidden behavioral states
Dalton Hance, Katie M. Moriarty, Bruce A. Hollen, Russell Perry
2021, Movement Ecology (9)
Studies of animal movement using location data are often faced with two challenges. First, time series of animal locations are likely to arise from multiple behavioral states (e.g., directed movement, resting) that cannot be observed directly. Second, location data can be affected by measurement error, including failed location fixes. Simultaneously...
Prevalence of neonicotinoids and sulfoxaflor in alluvial aquifers in a high corn and soybean producing region of the Midwestern United States
D.A. Thompson, Dana W. Kolpin, Michelle L. Hladik, Kimberlee K. Barnes, J.D. Vargo, R.W. Field
2021, Science of the Total Environment (782)
Neonicotinoids have been previously detected in Iowa surface waters, but less is known regarding their occurrence in groundwater. To help fill this research gap, a groundwater study was conducted in eastern Iowa and southeastern Minnesota, a corn and soybean producing area with known heavy neonicotinoid...
Five decades of observed daily precipitation reveal longer and more variable drought events across much of the western United States
Fangyue Zhang, Joel A. Biederman, Matthew P. Dannenberg, Dong Yan, Sasha C. Reed, William K. Smith
2021, Geophysical Research Letters (48)
Multiple lines of evidence suggest climate change will result in increased precipitation variability and consequently more frequent extreme events. These hydroclimatic changes will likely have significant socioecological impacts, especially across water-limited regions. Here we present an analysis of daily meteorological observations from 1976 to 2019 at 337...
Water resources of St. Martin Parish, Louisiana
Maxwell A. Lindaman, Vincent E. White
2021, Fact Sheet 2021-3007
Information concerning the availability, use, and quality of water in St. Martin Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about...
Water resources of Iberville Parish, Louisiana
Maxwell A. Lindaman, Vincent E. White
2021, Fact Sheet 2021-3014
Information concerning the availability, use, and quality of water in Iberville Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about 589.87 million...
