Low MSP-1 haplotype diversity in the West Palearctic population of the avian malaria parasite Plasmodium relictum
Olof Hellgren, Victor Kelbskopf, Vincenzo A Ellis, Arif Ciloglu, Melanie Duc, Xi Huang, Ricardo J. Lopes, Vanessa A Mata, Sargis A. Aghayan, Abdullah Inci, Sergei V. Drovetski
2021, Malaria Journal (20)
BackgroundAlthough avian Plasmodium species are widespread and common across the globe, limited data exist on how genetically variable their populations are. Here, the hypothesis that the avian blood parasite Plasmodium relictum exhibits very low genetic diversity in its Western Palearctic transmission area (from Morocco to Sweden in the north and Transcaucasia in...
Response of fish assemblages to restoration of rapids habitat in a Great Lakes connecting channel
A. Molina-Moctezuma, N. Godby, K. Kapuscinski, Edward F. Roseman, K. Skubik, A. Moerke
2021, Journal of Great Lakes Research (47) 1182-1191
Rapids habitats are critical spawning and nursery grounds for multiple Laurentian Great Lakes fishes of ecological importance such as lake sturgeon, walleye, and salmonids. However, river modifications have destroyed important rapids habitat in connecting channels by modifying flow profiles and removing large quantities of cobble and gravel that are preferred...
Integrating thermal infrared stream temperature imagery and spatial stream network models to understand natural spatial thermal variability in streams
Matthew R. Fuller, Joseph L. Ebersole, Naomi Detenbeck, Rochelle Labisoa, P.T. Leinenbach, Christian E. Torgersen
2021, Journal of Thermal Biology (100)
Under a warmer future climate, thermal refuges could facilitate the persistence of species relying on cold-water habitat. Often these refuges are small and easily missed or smoothed out by averaging in models. Thermal infrared (TIR) imagery can provide empirical water surface...
Recency of faulting and subsurface architecture of the San Diego Bay pull-apart basin, California, USA
Drake Moore Singleton, Jillian M. Maloney, Daniel S. Brothers, Shannon Klotsko, Neal W. Driscoll, Thomas K. Rockwell
2021, Frontiers in Earth Science (9)
In southern California, plate boundary motion between the North American and Pacific plates is distributed across several sub-parallel fault systems. The offshore faults of the California Continental Borderland (CCB) are thought to accommodate ~10-15% of the total plate boundary motion, but the exact distribution of slip and the mechanics of...
Magnetotelluric sampling and geoelectric hazard estimation: Are national-scale surveys sufficient?
Benjamin Scott Murphy, Greg M. Lucas, Jeffrey J. Love, Anna Kelbert, Paul A. Bedrosian, E. Joshua Rigler
2021, AGU Space Weather (19)
At present, the most reliable information for inferring storm-time ground electric fields along electrical transmission lines comes from coarsely sampled, national-scale magnetotelluric (MT) data sets, such as that provided by the EarthScope USArray program. An underlying assumption in the use of such data is that they adequately sample the spatial...
Nuclear magnetic resonanance logs of fractured bedrock at the Hidden Lane Landfill site, Culpeper Basin, Virginia
Carole D. Johnson, Stephanie N. Phillips, Frederick D. Day-Lewis, Claire R. Tiedeman, Bruce Rundell, Edward Gilbert
2021, Conference Paper, Symposium on the application of geophysics to engineering and environmental problems proceedings
In May 2018, the U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency (EPA) collected borehole nuclear magnetic resonance (bNMR) logs in three boreholes completed in sandstone and siltstone of the Balls Bluff Member of the Bull Run Formation at a Superfund Site in Culpeper Basin, Virginia....
Experimental warming differentially affects vegetative and reproductive phenology of tundra plants
Courtney G. Collins, Sarah Claire Elmendorf, Robert D. Hollister, Greg Henry, Karin Clark, Anne Bjorkman, Isla H. Myers-Smith, Janet S. Prevey, Isabel Ashton, Jakob J. Assmann, Juha Alatalo, Michele Carbognani, Chelsea Chisholm, Elisabeth J. Cooper, Chiara, Ingibjorg Svala Jonsdottir, Kari Klanderud, Christopher Kopp, Carolyn Livensperger, Marguerite Mauritz, Jeremy May, Ulf Molau, Steven F. Oberbaeur, Emily Ogburn, Zoe Panchen, Alessandro Petraglia, Eric Post, Christian Rixen, Heidi Rodenhizer, Ted Schuur, Phillip Semenchuk, Jane G. Smith, Heidi Steltzer, Ørjan Totland, Marilyn Walker, Jeffrey Welker, Katharine N. Suding
2021, Nature Communications (12)
Rapid climate warming is altering Arctic and alpine tundra ecosystem structure and function, including shifts in plant phenology. While the advancement of green up and flowering are well-documented, it remains unclear whether all phenophases, particularly those later in the season, will shift in unison or respond divergently to warming. Here,...
The PLUM earthquake early warning algorithm: A retrospective case study of West Coast, USA, data
Debi Kilb, Julian J Bunn, Jessie Kate Saunders, Elizabeth S. Cochran, Sarah E. Minson, Annemarie S. Baltay Sundstrom, Colin T O’Rourke, Mitsuyuki Hoshiba, Yuki Kodera
2021, JGR Solid Earth (126)
The PLUM (Propagation of Local Undamped Motion) earthquake early warning (EEW) algorithm differs from typical source-based EEW algorithms as it predicts shaking directly from observed shaking without first deriving earthquake source information (e.g., magnitude and epicenter). Here, we determine optimal PLUM event detection thresholds for U.S. West Coast earthquakes using...
Abundance of Gulf Coast Waterdogs (Necturus beyeri) along Bayou Lacombe, Saint Tammany Parish, Louisiana
Brad Glorioso, Hardin Waddle, Lindy J. Muse, Sidney T Godfrey
2021, Journal of Herpetology (55) 160-166
Few ecological studies have been conducted on Gulf Coast Waterdogs (Necturus beyeri), and published studies have focused on relatively small stream sections of 125 m to 1.75 km. In 2015, we sampled 25 sites along a 13.4-km stretch of Bayou Lacombe (Saint Tammany Parish, Louisiana,...
Population estimates and trends of three Maui Island-endemic Hawaiian Honeycreepers
Seth Judge, Christopher C Warren, Richard J. Camp, Laura K Berthold, Hanna L. Mounce, Patrick J. Hart, Ryan J. Monello
2021, Journal of Field Ornithology (92) 115-126
Population monitoring is critical for informing the management and conservation of rare Hawaiian forest birds. In 2017, we used point-transect distance sampling methods to estimate population densities of birds on Haleakalā Volcano on east Maui island. We estimated the populations and ranges of three island-endemic Hawaiian...
A review of sand detachment in modern deep marine environments: Analogues for upslope stratigraphic traps
John W. Counts, Lawrence Amy, Aggeliki Georgiopoulou, Peter Haughton
2021, Marine and Petroleum Geology (132)
Isolated, detached sands provide opportunities for large-volume stratigraphic traps in many deepwater petroleum systems. Here we provide a review of the different types of sandbody detachments based on published data from the modern-day seafloor and recent (generally Quaternary-present), shallow-buried strata. Detachment mechanisms...
Identification of Aphanomyces invadans, the cause of epizootic ulcerative syndrome, in smallmouth bass (Micropterus dolomieu) from the Cheat River, West Virginia, USA
Heather L. Walsh, Vicki S. Blazer, Patricia M. Mazik
2021, Journal of Fish Diseases (44) 1639-1641
The oomycete Aphanomyces invadans (Saprolegniales, Oomycetes), the cause of epizootic ulcerative syndrome (EUS), is an OIE (World Organization for Animal Health) reportable pathogen, capable of infecting many fish species worldwide in both freshwater and estuarine environments (Iberahim et al. 2018). Since the discovery of EUS in Japan in 1971 (Egusa...
Caution is warranted when using animal space-use and movement to infer behavioral states
Frances E. Buderman, Tess M. Gingery, Duane R. Diefenbach, Laura C. Gigliotti, Danielle Begley-Miller, Marc E. McDill, Bret D. Wallingford, Christopher S. Rosenberry, Patrick J. Drohan
2021, Movement Ecology (9)
BackgroundIdentifying the behavioral state for wild animals that can’t be directly observed is of growing interest to the ecological community. Advances in telemetry technology and statistical methodologies allow researchers to use space-use and movement metrics to infer the underlying, latent, behavioral state of an animal without direct observations....
Diet composition and body condition of polar bears (Ursus maritimus) in relation to sea ice habitat in the Canadian High Arctic
Katie R. N. Florko, Gregory W. Thiemann, Jeffrey F. Bromaghin, Evan S. Richardson
2021, Polar Biology (44) 1445-1456
Polar bears (Ursus maritimus) rely on sea ice for hunting marine mammal prey. Declining sea ice conditions associated with climate warming have negatively affected polar bears, especially in the southern portion of their range. At higher latitudes, the transition from multi-year ice to thinner annual ice...
Assessment of streamflow and water quality in the Upper Yampa River Basin, Colorado, 1992–2018
Natalie K. Day
2021, Scientific Investigations Report 2021-5016
The Upper Yampa River Basin drains approximately 2,100 square miles west of the Continental Divide in north-western Colorado. There is a growing need to understand potential changes in the quantity and quality of water resources as the basin is undergoing increasing land and water development to support growing municipal, industrial,...
Estimating Piacenzian sea surface temperature using an alkenone-calibrated transfer function
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley
2021, Scientific Investigations Report 2021-5051
Stationarity of environmental preferences is a primary assumption required for any paleoenvironmental reconstruction using fossil materials based upon calibration to modern organisms. Confidence in this assumption decreases the further back in time one goes, and the validity of the assumption that species temperature tolerances have not changed over time has...
Lateral shoreline erosion and shore-proximal sediment deposition on a coastal marsh from seasonal, storm and decadal measurements
Kathryn E.L. Smith, Joseph F. Terrano, Nicole S. Khan, Christopher G. Smith, Jonathan L Pitchford
2021, Geomorphology (389)
The persistence of coastal marsh is dependent on its ability to maintain elevation relative to sea level, particularly for marshes experiencing high rates of shoreline erosion due to wave-attack, storms, and sea level rise. Sediments eroded at the marsh edge are either delivered onto the marsh platform or into the estuary, the latter resulting...
The biophysical role of water and ice within permafrost nearing collapse: Insights from novel geophysical observations
Stephanie R. James, Burke J. Minsley, Jack McFarland, Eugenie S. Euskirchen, Colin W. Edgar, Mark Waldrop
2021, JGR Earth Surface (126)
The impact of permafrost thaw on hydrologic, thermal, and biotic processes remains uncertain, in part due to limitations in subsurface measurement capabilities. To better understand subsurface processes in thermokarst environments, we collocated geophysical and biogeochemical instruments along a thaw gradient between forested permafrost and collapse-scar bogs at the Alaska Peatland...
Evaluation of remote mapping techniques for earthquake-triggered landslide inventories in an urban subarctic environment: A case study of the 2018 Anchorage, Alaska Earthquake
Sabrina N. Martinez, Lauren N. Schaefer, Kate E. Allstadt, Eric M. Thompson
2021, Frontiers Earth Science Journal (9)
Earthquake-induced landslide inventories can be generated using field observations but doing so can be challenging if the affected landscape is large or inaccessible after an earthquake. Remote sensing data can be used to help overcome these limitations. The effectiveness of remotely sensed data to produce landslide inventories, however,...
Spatial ecology of invasive Burmese pythons in southwestern Florida
Ian A. Bartoszek, Brian J. Smith, Robert Reed, Kristen Hart
2021, Ecosphere (12)
Understanding the spatial ecology of an invasive species is critical for designing effective control programs. Determining and quantifying home range estimates and habitat associations can streamline targeted removal efforts for wide-ranging, cryptic animals. The Burmese python (Python bivittatus) is a large-bodied constrictor snake with an established and expanding invasive population...
A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya
D. H. Shugar, Mylene Jacquemart, D. Shean, S. Bhushan, K. Upadhyay, A. Sattar, W. Schwanghart, Sara K. McBride, M. Van Wyk de Vries, M. Mergili, A. Emmer, C. Deschamps-Berger, M. McDonnell, R. Bhambri, S. Allen, E. Berthier, J.L. Carrivick, J.J. Clague, M. Dokukin, S.A. Dunning, Herbert Frey, S. Gascoin, U. K. Haritashya, C. Huggel, A. Kaab, J.S. Kargel, J.L. Kavanaugh, P. Lacroix, D. N. Petley, S. Rupper, M.F. Azam, S.J. Cook, A.P. Dimri, M. Eriksson, D. Farinotti, J. Fiddes, K.R. Gnyawali, S. Harrison, M.K. Jha, M. Koppes, S. Kumar, S. Leiness, U. Majeed, S. Mai, A. Muhuri, J. Noetzli, F. Paul, I. Rashid, K. Sain, J. Steiner, F. Ugalde, C.S. Watson, M.J. Westoby
2021, Science
On 7 Feb 2021, a catastrophic mass flow descended the Ronti Gad, Rishiganga, and Dhauliganga valleys in Chamoli, Uttarakhand, India, causing widespread devastation and severely damaging two hydropower projects. Over 200 people were killed or are missing. Our analysis of satellite imagery, seismic records, numerical model...
Magnitude and frequency of floods in the alluvial plain of the lower Mississippi River, 2017
Brandon T. Anderson
2021, Scientific Investigations Report 2021-5046
Annual exceedance probability flows at gaged locations and regional regression equations used to estimate annual exceedance probability flows at ungaged locations were developed by the U.S. Geological Survey, in cooperation with the Mississippi Department of Transportation, to improve flood-frequency estimates at rural streams in the alluvial plain of the lower...
A near-real-time model for estimating probability of road obstruction due to earthquake-triggered landslides
B.H. Wilson, Kate E. Allstadt, Eric M. Thompson
2021, Earthquake Spectra (37) 2400-2418
Coseismic landslides are a major source of transportation disruption in mountainous areas, but few approaches exist for rapidly estimating impacts to road networks. We develop a model that links the U.S. Geological Survey (USGS) near-real-time earthquake-triggered landslide hazard model with Open Street Map (OSM) road network data...
Evidence for variable precipitation and discharge from Upper Cretaceous–Paleogene fluvial deposits of the Raton Basin, Colorado–New Mexico, U.S.A.
Theresa Maude Schwartz, Marieke Dechesne, Kristine L. Zellman
2021, Journal of Sedimentary Research (91) 571-594
The Raton Basin of Colorado–New Mexico, USA, is the southeasternmost basin of the Laramide intraforeland province of North America. It hosts a thick succession (4.5 km or 15,000 ft) of Upper Cretaceous to Paleogene marine and continental strata that were deposited in response to the...
Age-structured Jolly-Seber model expands inference and improves parameter estimation from capture-recapture data
Nathan J. Hostetter, Nicholas J. Lunn, Evan S. Richardson, Eric V. Regehr, Sarah J. Converse
2021, PLoS ONE
Understanding the influence of individual attributes on demographic processes is a key objective of wildlife population studies. Capture-recapture and age data are commonly collected to investigate hypotheses about survival, reproduction, and viability. We present a novel age-structured Jolly-Seber model that incorporates age and capture-recapture data to provide comprehensive information on...
