A fault‐based model for crustal deformation in the western United States based on a combined inversion of GPS and geologic inputs
Yuehua Zeng, Zheng-Kang Shen
2017, Bulletin of the Seismological Society of America (107) 2597-2612
We develop a crustal deformation model to determine fault‐slip rates for the western United States (WUS) using the Zeng and Shen (2014) method that is based on a combined inversion of Global Positioning System (GPS) velocities and geological slip‐rate constraints. The model consists of six blocks with...
Relative abundance of deformed wing virus, Varroa destructor virus 1, and their recombinants in honey bees (Apis mellifera) assessed by kmer analysis of public RNA-Seq data
Robert S. Cornman
2017, Journal of Invertebrate Pathology (149) 44-50
Deformed wing virus (DWV) is a major pathogen of concern to apiculture, and recent reports have indicated the local predominance and potential virulence of recombinants between DWV and a related virus, Varroa destructor virus 1 (VDV). However, little is known about the frequency and titer of VDV and recombinants relative...
Presentation and analysis of a worldwide database of earthquake-induced landslide inventories
Hakan Tanyas, Cees J. van Westen, Kate E. Allstadt, M. Anna Nowicki Jessee, Tolga Gorum, Randall W. Jibson, Jonathan W. Godt, Hiroshi P. Sato, Robert G. Schmitt, Odin Marc, Niels Hovius
2017, Journal of Geophysical Research F: Earth Surface (122) 1991-2015
Earthquake-induced landslide (EQIL) inventories are essential tools to extend our knowledge of the relationship between earthquakes and the landslides they can trigger. Regrettably, such inventories are difficult to generate and therefore scarce, and the available ones differ in terms of their quality and level of completeness. Moreover, access to existing...
Modeling watershed-scale impacts of stormwater management with traditional versus low impact development design
Stephanie A. Sparkman, Dianna M. Hogan, Kristina G. Hopkins, J. V. Loperfido
2017, Journal of the American Water Resources Association (53) 1081-1094
Stormwater runoff and associated pollutants from urban areas in the greater Chesapeake Bay Watershed (CBW) impair local streams and downstream ecosystems, despite urbanized land comprising only 7% of the CBW area. More recently, stormwater best management practices (BMPs) have been implemented in a low impact development (LID) manner to treat...
Resilience in ecotoxicology: Toward a multiple equilibrium concept
Mirco Bundschuh, Ralf Schulz, Craig R. Allen, David G. Angeler
2017, Environmental Toxicology and Chemistry (36) 2574-2580
The term resilience describes stress–response patterns across scientific disciplines. In ecology, advances have been made to clearly define resilience based on underlying mechanistic assumptions. Engineering resilience (rebound) is used to describe the ability of organisms to recover from adverse conditions (disturbances), which is termed the rate of recovery. By contrast,...
Influence of precipitation and crop germination on resource selection by mule deer (Odocoileus hemionus) in southwest Colorado
Emily M. Carrollo, Heather E. Johnson, Justin W. Fischer, Matthew Hammond, Patricia D. Dorsey, Charles Anderson, Kurt C. Vercauteren, W. David Walter
2017, Scientific Reports (7) 1-9
Mule deer (Odocoileus hemionus) populations in the western United States provide many benefits to local economies but can also cause considerable damage to agriculture, particularly damage to lucrative crops. Limited information exists to understand resource selection of mule deer in response to annual variation in crop rotation and climatic conditions....
A method for quantifying cloud immersion in a tropical mountain forest using time-lapse photography
Maoya Bassiouni, Martha A. Scholl, Angel J. Torres-Sanchez, Sheila F. Murphy
2017, Agricultural and Forest Meteorology (243) 100-112
Quantifying the frequency, duration, and elevation range of fog or cloud immersion is essential to estimate cloud water deposition in water budgets and to understand the ecohydrology of cloud forests. The goal of this study was to develop a low-cost and high spatial-coverage method to detect occurrence of cloud immersion...
Compositional signatures in acoustic backscatter over vegetated and unvegetated mixed sand-gravel riverbeds
Daniel D. Buscombe, Paul E. Grams, Matthew A. Kaplinski
2017, Journal of Geophysical Research F: Earth Surface (122) 1771-1793
Multibeam acoustic backscatter has considerable utility for remote characterization of spatially heterogeneous bed sediment composition over vegetated and unvegetated riverbeds of mixed sand and gravel. However, the use of high-frequency, decimeter-resolution acoustic backscatter for sediment classification in shallow water is hampered by significant topographic contamination of the signal. In mixed...
Isotopic characterization of late Neogene travertine deposits at Barrancas Blancas in the eastern Atacama Desert, Chile
J. Quade, E.T. Rasbury, K.W. Huntington, Adam M. Hudson, H. Vonhof, K. Anchukaitis, Julio L. Betancourt, C. Latorre, M. Pepper
2017, Chemical Geology (466) 41-56
Here we explore the potential of spring-related, surface and subsurface carbonates as an archive of paleoenvironmental change at Barrancas Blancas, located in the broadest and driest sector of the Atacama Desert at 24.5°S. From these deposits we present a new stable isotopic record of paleoenvironmental conditions over portions of the...
Harvesting wildlife affected by climate change: a modelling and management approach for polar bears
Eric V. Regehr, Ryan H. Wilson, Karyn D. Rode, Michael C. Runge, Harry Stern
2017, Journal of Applied Ecology (54) 1534-1543
The conservation of many wildlife species requires understanding the demographic effects of climate change, including interactions between climate change and harvest, which can provide cultural, nutritional or economic value to humans.We present a demographic model that is based on the polar bear Ursus maritimus life cycle and includes density-dependent...
Estimating Mudpuppy (Necturus maculosus) abundance in the Lamoille River, Vermont, USA
Isaac C. Chellman, Donna L. Parrish, Therese M. Donovan
2017, Herpetological Conservation and Biology (12) 422-434
The Mudpuppy (Necturus maculosus) is classified as a Species of Greatest Conservation Need by the state of Vermont. There is concern regarding status of populations in the Lake Champlain basin because of habitat alteration and potential effects of 3-trifluromethyl-4-nitrophenol (TFM), a chemical used to control Sea Lamprey (Petromyzon marinus). The...
Development of a foraging model framework to reliably estimate daily food consumption by young fishes
David Deslauriers, Alex J. Rosburg, Steven R. Chipps
2017, Canadian Journal of Fisheries and Aquatic Sciences (74) 1668-1681
We developed a foraging model for young fishes that incorporates handling and digestion rate to estimate daily food consumption. Feeding trials were used to quantify functional feeding response, satiation, and gut evacuation rate. Once parameterized, the foraging model was then applied to evaluate effects of prey type, prey density, water...
CWDPRNP: A tool for cervid prion sequence analysis in program R
William L. Miller, W. David Walter
2017, Bioinformatics (33) 3096-3097
Chronic wasting disease is a fatal, neurological disease caused by an infectious prion protein, which affects economically and ecologically important members of the family Cervidae. Single nucleotide polymorphisms within the prion protein gene have been linked to differential susceptibility to the disease in many species. Wildlife managers are seeking to...
Effects of sulfide concentration and dissolved organic matter characteristics on the structure of nanocolloidal metacinnabar
Brett Poulin, Chase A. Gerbig, Christopher S. Kim, John P. Stegemeier, Joseph N. Ryan, George R. Aiken
2017, Environmental Science & Technology (51) 13133-13142
Understanding the speciation of divalent mercury (Hg(II)) in aquatic systems containing dissolved organic matter (DOM) and sulfide is necessary to predict the conversion of Hg(II) to bioavailable methylmercury. We used X-ray absorption spectroscopy to characterize the structural order of mercury in Hg(II)–DOM–sulfide systems for a range of sulfide concentration (1–100...
Groundwater declines are linked to changes in Great Plains stream fish assemblages
Joshuah S. Prekins, Keith B. Gido, Jeffrey A. Falke, Kurt D. Fausch, Harry Crockett, Eric R. Johnson, John Sanderson
2017, Proceedings of the National Academy of Sciences of the United States of America (114) 7373-7378
Groundwater pumping for agriculture is a major driver causing declines of global freshwater ecosystems, yet the ecological consequences for stream fish assemblages are rarely quantified. We combined retrospective (1950–2010) and prospective (2011–2060) modeling approaches within a multiscale framework to predict change in Great Plains stream fish assemblages associated with groundwater...
Large-scale modeled contemporary and future water temperature estimates for 10774 Midwestern U.S. Lakes
Luke A. Winslow, Gretchen J. A. Hansen, Jordan S. Read, Michael Notaro
2017, Scientific Data (4) 1-11
Climate change has already influenced lake temperatures globally, but understanding future change is challenging. The response of lakes to changing climate drivers is complex due to the nature of lake-atmosphere coupling, ice cover, and stratification. To better understand the diversity of lake responses to climate change and give managers insight...
Seasonality of change: Summer warming rates do not fully represent effects of climate change on lake temperatures
Luke Winslow, Jordan S. Read, Gretchen J. A. Hansen, Kevin C. Rose, Dale M. Robertson
2017, Limnology and Oceanography (62) 2168-2178
Responses in lake temperatures to climate warming have primarily been characterized using seasonal metrics of surface-water temperatures such as summertime or stratified period average temperatures. However, climate warming may not affect water temperatures equally across seasons or depths. We analyzed a long-term dataset (1981–2015) of biweekly water temperature data in...
238U–230Th–226Ra–210Pb–210Po disequilibria constraints on magma generation, ascent, and degassing during the ongoing eruption of Kīlauea
Guillaume Girard, Mark K. Reagan, Kenneth W. W. Sims, Carl Thornber, Christopher L. Waters, Erin H. Phillips
2017, Journal of Petrology (58) 1199-1226
The timescales of magma genesis, ascent, storage and degassing at Kīlauea volcano, Hawai‘i are addressed by measuring 238U-series radionuclide abundances in lava and tephra erupted between 1982 and 2008. Most analyzed samples represent lavas erupted by steady effusion from Pu‘u ‘Ō‘ō and Kūpahianaha from 1983 to 2008. Also included are samples...
Experimental landscape reduction of wild rodents increases movements in the invasive brown treesnake (Boiga irregularis)
Michelle Christy, Julie A. Savidge, Amy A. Yackel Adams, James E. Gragg, Gordon H. Rodda
2017, Management of Biological Invasions (8) 455-467
Experimental studies evaluating the effects of food availability on the movement of free-ranging animals generally involve food supplementation rather than suppression. Both approaches can yield similar insights, but we were interested in the potential for using food suppression for the management and control of invasive predators, in particular, the brown...
Extreme precipitation variability, forage quality and large herbivore diet selection in arid environments
James W. Cain III, Jay V. Gedir, Jason P. Marshal, Paul R. Krausman, Jamison D. Allen, Glenn C. Duff, Brian Jansen, John R. Morgart
2017, Oikos (126) 1459-1471
Nutritional ecology forms the interface between environmental variability and large herbivore behaviour, life history characteristics, and population dynamics. Forage conditions in arid and semi-arid regions are driven by unpredictable spatial and temporal patterns in rainfall. Diet selection by herbivores should be directed towards overcoming the most pressing nutritional limitation (i.e....
Accounting for imperfect detection of groups and individuals when estimating abundance
Matthew J. Clement, Sarah J. Converse, J. Andrew Royle
2017, Ecology and Evolution (7) 7304-7310
If animals are independently detected during surveys, many methods exist for estimating animal abundance despite detection probabilities <1. Common estimators include double-observer models, distance sampling models and combined double-observer and distance sampling models (known as mark-recapture-distance-sampling models; MRDS). When animals reside in groups, however, the assumption of independent detection is...
Capturing change: the duality of time-lapse imagery to acquire data and depict ecological dynamics
Emma M. Brinley Buckley, Craig R. Allen, Michael Forsberg, Michael Farrell, Andrew J. Caven
2017, Ecology and Society (22) 1-12
We investigate the scientific and communicative value of time-lapse imagery by exploring applications for data collection and visualization. Time-lapse imagery has a myriad of possible applications to study and depict ecosystems and can operate at unique temporal and spatial scales to bridge the gap between large-scale satellite imagery projects and...
Culturally induced range infilling of eastern redcedar: a problem in ecology, an ecological problem, or both?
Aubrey Streit Krug, Daniel R. Uden, Craig R. Allen, Dirac Twidwell
2017, Ecology and Society (22)
The philosopher John Passmore distinguished between (1) “problems in ecology,” or what we might call problems in scientific understanding of ecological change, and (2) “ecological problems,” or what we might call problems faced by societies due to ecological change. The spread of eastern redcedar (Juniperus virginiana) and conversion of the...
Breeding behavior of northern saw-whet owls in Oregon
Jenna M. McCullough, Courtney J. Conway
2017, Northwest Science (91) 222-227
We know little about the breeding behavior of most nocturnal raptors. Nest attendance and prey delivery rates can be used as indices of relative habitat quality or extent of parental care. We used video cameras to document and observe prey delivery rates, nest attendance and bout durations at two northern...
Is the impact of eutrophication on phytoplankton diversity dependent on lake volume/ecosystem size?
Didier L. Baho, Stina Drakare, Richard K. Johnson, Craig R. Allen, David G. Angeler
2017, Journal of Limnology (76) 199-210
Research focusing on biodiversity responses to the interactions of ecosystem size and anthropogenic stressors are based mainly on correlative gradient studies, and may therefore confound size-stress relationships due to spatial context and differences in local habitat features across ecosystems. We investigated how local factors related to anthropogenic stressors (e.g.,eutrophication) interact...