Yearly temperature fluctuations and survey speed influence road counts of wintering raptors
Christopher J W McClure, Brian W. Rolek, Gregory W Grove, Todd E. Katzner
2021, Ibis (163) 593-606
Globally, evaluation of population trends is the most pressing research need for many species of conservation concern. Road counts for birds of prey are useful for monitoring long‐term population trends and examining year‐to‐year variations in abundance. We examined data from 2155 road surveys conducted from 2001...
Modeling round goby growth in Lake Michigan and Lake Huron with multi-model inference
Youjian Duan, Charles P. Madenjian, Yingming Zhao, Bin Huo
2021, Fisheries Research (236)
Although the round goby Neogobius melanostomus has become established throughout the Laurentian Great Lakes, a multi-model inference (MMI) approach toward characterizing round goby growth in the Laurentian Great Lakes has yet to applied using otolith-derived data. Further, spatial variation in round goby growth among...
Evaluation of simulated ground motions using probabilistic seismic demand analysis: CyberShake (ver. 15.12) simulations for Ordinary Standard Bridges
Jawad Fayaz, Sanaz Rezaeian, Farzin Zareian
2021, Soil Dynamics and Earthquake Engineering Journal (141)
There is a need for benchmarking and validating simulated ground motions in order for them to be utilized by the engineering community. Such validation may be geared towards a specific ground motion simulation method, a target engineering application, and a specific location; the validation presented herein focuses on a bridge...
Correcting the historical record for Kīlauea Volcano's 1832, 1868, and 1877 summit eruptions
Tim R. Orr, Richard W. Hazlett, Liliana G. DeSmither, James P. Kauahikaua, Ben Gaddis
2021, Journal of Volcanology and Geothermal Research (410)
Three fissure eruptions are known to have occurred along the northeastern edge of Kīlauea's summit caldera in the 19th century—in the years 1832, 1868, and 1877. Modern portrayal of these eruptions on maps and in written sources indicates that the 1832...
Mangroves and people: Impacts and interactions
Daniel A Freiss, Siew Chin Chua, Zeehan Jaafer, Ken Krauss, Erik S. Yando
2021, Estuarine, Coastal and Shelf Science (248)
Mangroves have long been associated with human populations, as coastal communities rely on the various ecosystem services that mangroves provide. However, human degradation and destruction of mangrove forests is common, despite and because of our reliance on them as valuable ecosystems. Mangrove research and management must elucidate and reconcile these...
Forest responses to last-millennium hydroclimate variability are governed by spatial variations in ecosystem sensitivity
Christine R. Rollinson, Andria Dawson, Ann M. Raiho, John W. Williams, Michael C. Dietze, Thomas Hickler, Stephen T. Jackson, Jason S. McLachlan, David J.P. Moore, Benjamin Poulter, Tristan Quaife, Jorg Steinkamp, Mathias Trachsel
2021, Ecology Letters (24) 498-508
Forecasts of future forest change are governed by ecosystem sensitivity to climate change, but ecosystem model projections are under-constrained by data at multidecadal and longer timescales. Here, we quantify ecosystem sensitivity to centennial-scale hydroclimate variability, by comparing dendroclimatic and pollen-inferred reconstructions of drought, forest composition and...
Movement ecology
Stephen Blake, Charles B. Yackulic, Freddy Cabrera, Sharon L. Deem, Diego Ellis-Soto, James P. Gibbs, Franz Kummeth, Martin Wikelski, Guillaume Bastille-Rousseau
2021, Book chapter, Galapagos giant tortoises—Biodiversity of world—Conservation from genes to landscapes
(Yackulic) At first glance, the decision to study movement in Galapagos tortoises seems curious. Given the slow speed of tortoises and tendency to forage and rest as they move, it seems implausible that tortoises would string their slow bursts of activity together to accomplish large-scale movements. Nonetheless, as early as...
Freezing in a warming climate: Marked declines of a subnivean hibernator after a snow drought
Aaron N. Johnston, Roger G Christophersen, Erik A. Beever, Jason I. Ransom
2021, Ecology and Evolution (11) 1264-1279
Recent snow droughts associated with unusually warm winters are predicted to increase in frequency and affect species dependent upon snowpack for winter survival. Changes in populations of some cold‐adapted species have been attributed to heat stress or indirect effects on habitat from unusually warm summers, but little is known about...
Apparent earthquake rupture predictability
M.-A. Meier, P. Ampuero, Elizabeth S. Cochran, Morgan T. Page
2021, Geophysical Journal International (225) 657-663
To what extent can the future evolution of an ongoing earthquake rupture be predicted? This question of fundamental scientific and practical importance has recently been addressed by studies of teleseismic source time functions (STFs) but reaching contrasting conclusions. One study concludes that the initial portion of STFs is the...
A ground‐motion prediction model for shallow crustal earthquakes in Greece
David Boore, Jonathan P. Stewart, Andreas Skarlatoudis, Emel Seyhan, Basil Margaris, Nikos Theodoulidis, Emmanual Scordilis, Ionnis Kalogeras, Nikos Klimis, Nikos Melis
2021, Bulletin of the Seismological Society of America (111) 857-874
Using a recently completed database of uniformly processed strong‐motion data recorded in Greece, we derive a ground‐motion prediction model (GMPM) for horizontal‐component peak ground velocity, peak ground acceleration, and 5% damped pseudoacceleration response spectra, at 105 periods ranging from 0.01 to 10 s. The equations were developed by modifying a global...
Red imported fire ants reduce invertebrate abundance, richness, and diversity in Gopher Tortoise burrows
Deborah Mardeane Epperson, Craig R. Allen, Katharine F.E. Hogan
2021, Diversity
Gopher Tortoise (Gopherus polyphemus) burrows support diverse commensal invertebrate communities that may be of special conservation interest. We investigated the impact of red imported fire ants (Solenopsis invicta) on the invertebrate burrow community at 10 study sites in southern Mississippi, sampling burrows (1998–2000) before and...
Effects-based monitoring of bioactive chemicals discharged to the Colorado River before and after a municipal wastewater treatment plant replacement
J.E. Cavallin, William A. Battaglin, Jon Beihoffer, Bradley D. Blackwell, Paul M. Bradley, AR Cole, Drew R. Ekman, R Hofer, J Kinsey, Kristen Keteles, R Weissinger, Dana L. Winkelman, Daniel L. Villeneuve
2021, Environmental Science and Technology (55) 974-984
Monitoring of the Colorado River near the Moab, Utah, wastewater treatment plant (WWTP) outflow has detected pharmaceuticals, hormones, and estrogen-receptor (ER)-, glucocorticoid receptor (GR)-, and peroxisome proliferator-activated receptor-gamma (PPARγ)-mediated biological activities. The aim of the present multi-year study was to assess effects of a WWTP replacement on bioactive chemical (BC)...
Lithium in groundwater used for drinking-water supply in the United States
Bruce D. Lindsey, Kenneth Belitz, Charles A. Cravotta III, Patricia Toccalino, Neil M. Dubrovsky
2021, Science of the Total Environment (767)
Lithium concentrations in untreated groundwater from 1464 public-supply wells and 1676 domestic-supply wells distributed across 33 principal aquifers in the United States were evaluated for spatial variations and possible explanatory factors. Concentrations nationwide ranged from <1 to 396 μg/L (median of 8.1) for public supply...
A unified model of crustal stress heterogeneity from borehole breakouts and earthquake focal mechanisms
Karen Luttrell, Jeanne L. Hardebeck
2021, JGR Solid Earth (126)
Observations of crustal stress orientation from the regional inversion of earthquake focal mechanisms often conflict with those from borehole breakouts, possibly indicating local stress heterogeneity, either laterally or with depth. To investigate this heterogeneity, we compiled SHmax estimates from previous studies for 57 near‐vertical boreholes with measured breakout azimuths across...
Shared functional traits explain synchronous changes in long‐term count trends of migratory raptors
Patricia Kaye T. Dumandan, Keith L. Bildstein, Laurie J. Goodrich, Andrii Zaiats, Trevor Caughlin, Todd E. Katzner
2021, Global Ecology and Biogeography (30) 640-650
AimAssessing long‐term shifts in faunal assemblages is important to understand the consequences of ongoing global environmental change. One approach to assess drivers of assemblage changes is to identify the traits associated with synchronous shifts in count trends among species. Our research identified traits influencing trends in 73 years...
A watershed moment: Analysis of sub-basins refocuses the geography of turtle conservation across the globe
Joshua R. Ennen, Mickey Agha, Sarah C. Sweat, Wildredo A. Matamoros, Jeffrey E. Lovich, John B. Iverson, Anders G.J. Rhodin, Robert C. Thomson, H. Bradley Shaffer, Christopher W. Hoagstrom
2021, Biological Conservation (253)
Conservation planners use a variety of decision-making tools, many of which require identifying and prioritizing spatial units based on their biodiversity and levels of imperilment. Turtles are highly imperiled, but present schemes for determining global priority areas are focused mostly on broad regional scales. We conduct the first global evaluation...
The occurrence and distribution of strontium in U.S. groundwater
MaryLynn Musgrove
2021, Applied Geochemistry (126)
Groundwater samples from 32 principal aquifers across the United States (U.S.) provide a broad spatial scope of the occurrence and distribution of strontium (Sr) and are used to assess environments and factors that influence Sr concentration. Strontium is a common trace element in soils, rocks, and water and is ubiquitous...
Using turbulence to identify preferential areas for grass carp (Ctenopharyngodon idella) larvae in streams: A laboratory study
Andres F. Prada, Amy E. George, Benjamin H. Stahlschmidt, P. Ryan Jackson, Duane Chapman, Rafael O. Tinoco
2021, Water Resources Research (57)
In this experimental series, we studied the swimming capabilities and response of grass carp (Ctenopharyngodon idella) larvae to flow turbulence in a laboratory flume. We compared three different experimental configurations, representing in‐stream obstructions commonly found in natural streams (e.g., a gravel bump, a single vertical cylinder,...
Crossroads of highly pathogenic H5N1: overlap between wild and domestic birds in the Black Sea-Mediterranean impacts global transmission
Nichola J. Hill, Lacy M. Smith, Sabir B. Muzaffar, Jessica L. Nagel, Diann Prosser, Jeffery D. Sullivan, Kyle A. Spragens, Carlos A. DeMattos, Cecilia C. Demattos, Lu’ay El Sayed, Kiraz Erciyas-Yavuz, C. Todd Davis, Joyce Jones, Zoltan Kis, Ruben O. Donis, Scott H. Newman, John Y. Takekawa
2021, Virus Evolution (7)
Understanding transmission dynamics that link wild and domestic animals is a key element of predicting the emergence of infectious disease, an event that has highest likelihood of occurring wherever human livelihoods depend on agriculture and animal trade. Contact between poultry and wild birds is a key driver of the emergence...
Lake-wide annual status of Mysis diluviana population in Lake Michigan in 2015
Toby J. Holda, Lars G. Rudstam, Steven A. Pothoven, David Warner, Dmytro S. Krystenko, James M. Watkins
2021, Journal of Great Lakes Research (47) 190-203
Mysis diluviana is one of the most abundant zooplankton by biomass in the Laurentian Great Lakes of North America, a predator of other zooplankton and an important prey for fishes. Studies of long-term trends in Lake Michigan have shown 2005–2016 densities to be 50–80% lower than 1990s densities, but these observations...
Rupture process of the M6.5 Stanley, Idaho, earthquake inferred from seismic waveform and geodetic data
Frederick Pollitz, William C. Hammond, Charles Wicks
2021, Seismological Research Letters (92) 699-709
The 2020 M 6.5 Stanley, Idaho, earthquake produced rupture in the north of the active Sawtooth fault in the northern basin and range at depth, without any observable surface rupture. Global Positioning System (GPS) and Interferometric Synthetic Aperture Radar (InSAR) data yield several millimeters of static offsets out to ∼100 km from the...
The impacts of the 2015/2016 El Niño on California's sandy beaches
Schuyler A Smith, Patrick L. Barnard
2021, Geomorphology (377)
The El Niño Southern Oscillation is the most dominant mode of interannual climate variability in the Pacific. The 2015/2016 El Niño event was one of the strongest of the last 145 years, resulting in anomalously high wave energy across the U.S. West Coast, and record...
Geometry of obstacle marks at instream boulders-Integration of laboratory investigations and field observations
Oliver Schlomer, Paul E. Grams, Daniel D. Buscombe, Jurgen Herget
2021, Earth Surface Processes and Landforms (46) 659-679
Obstacle marks are instream bedforms, typically composed of an upstream frontal scour hole and a downstream sediment accumulation in the vicinity of an obstacle. Local scouring at infrastructure (e.g. bridge piers) is a well‐studied phenomenon in hydraulic engineering, while less attention is given to the time‐dependent...
Rapid sensitivity analysis for reducing uncertainty in landslide hazard assessments
Rex L. Baum
2021, Conference Paper, WLF 2020: Understanding and reducing landslide disaster risk
One of the challenges in assessing temporal and spatial aspects of landslide hazard using process-based models is estimating model input parameters, especially in areas where limited measurements of soil and rock properties are available. In an effort to simplify and streamline parameter estimation, development of a simple, rapid...
Intrinsic and extrinsic drivers of life-history variability for a south-western cutthroat trout
Brock M. Huntsman, Colleen A. Caldwell, Abigail J. Lynch, Fitsum Abadi
2021, Ecology of Freshwater Fish (30) 100-114
The impacts of climate change on cold-water fishes will likely negatively manifest in populations at the trailing edge of their distributions. Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis, RGCT) occupy arid south-western U.S. streams at the southern-most edge of all cutthroat trout distributions, making RGCT particularly...
