Temperature thresholds for black mangrove (Avicennia germinans) freeze damage, mortality, and recovery in North America: Refining tipping points for range expansion in a warming climate
Michael Osland, Richard Day, Courtney T. Hall, Laura Feher, Anna R. Armitage, Just Cebrian, Kenneth H. Dunton, Randall Hughes, David Kaplan, Amy K. Langston, Aaron Macy, Carolyn A. Weaver, Gordon H. Anderson, Karen Cummins, Ilka C. Feller, Caitlin M. Snyder
2019, Journal of Ecology (108) 654-665
Near the tropical‐temperate transition zone, warming winter temperatures are expected to facilitate the poleward range expansion of freeze‐sensitive tropical organisms. In coastal wetlands of eastern and central North America, freeze‐sensitive woody plants (mangroves) are expected to expand northward into regions currently dominated by freeze‐tolerant herbaceous salt marsh plants. To advance...
National earthquake information center strategic plan, 2019–23
Gavin P. Hayes, Paul S. Earle, Harley M. Benz, David J. Wald, William L. Yeck
2019, Circular 1457
Executive SummaryDamaging earthquakes occur regularly around the world; since the turn of the 20th century, hundreds of earthquakes have caused significant loss of life and (or) millions of dollars or more in economic losses. While most of these did not directly affect the United States and its Territories, by studying...
Methods for estimating regional coefficient of skewness for unregulated streams in New England, based on data through water year 2011
Andrea G. Veilleux, Phillip J. Zarriello, Glenn A. Hodgkins, Elizabeth A. Ahearn, Scott A. Olson, Timothy A. Cohn
2019, Scientific Investigations Report 2017-5037
The magnitude of annual exceedance probability floods is greatly affected by the coefficient of skewness (skew) of the annual peak flows at a streamgage. Standard flood frequency methods recommend weighting the station skew with a regional skew to better represent regional and stable conditions. This study presents an updated analysis...
Informing sea turtle outreach efforts to maximize effectiveness
Jessica E. Swindall, Holly K. Ober, Margaret M. Lamont, Raymond Carthy
2019, Wildlife Society Bulletin (43) 436-446
Most sea turtle (Cheloniidae) species worldwide are endangered or threatened, with threats causing harm to sea turtles predominantly human‐induced. Thus, prevention of further declines to these imperiled species will require alteration of human behaviors. Regulations, incentives, and environmental education are 3 strategies that could be used to alter human behavior....
Using a mechanistic model to develop management strategies to cool Apache Trout streams under the threat of climate change
Joy Price Baker, Scott A. Bonar
2019, North American Journal of Fisheries Management (39) 849-867
User‐friendly stream temperature models populated with on‐site data may help in developing strategies to manage temperatures of individual stream reaches that are subject to climate change. We used the field‐tested Stream Segment Temperature model (U.S. Geological Survey) to simulate how altering discharge, groundwater input, channel wetted width, and shade prevents...
Population trends of king and common eiders from spring migration counts at Point Barrow, Alaska between 1994 and 2016
R. McGuire, R. Suydam, L. Quakenbush, Abby Powell
2019, Polar Biology (42) 2065-2074
Most king (Somateria spectabilis) and common eiders (S. mollissima v-nigra) breeding in the northwestern Nearctic migrate past Point Barrow, Alaska. Spring migration counts have been conducted there since 1953; during 1976–1996, both species declined > 50% for unknown reasons. To evaluate population trends, counts in 2003, 2004, 2015, and 2016 were compared...
Effects of multiple nonnative fish on an imperiled cyprinid, Hornyhead Chub
Brian T. Hickerson, Bryan M. Maitland, Annika W. Walters
2019, Transactions of the American Fisheries Society (148) 1132-1145
Nonnative fish can have substantial negative effects on the abundance and distribution of native fishes through predation and competition. Nonnative predators are of particular interest because they represent novel threats to native prey species that are not adapted to their presence. Prey species with limited distributions or population sizes may...
Potentiometric surface of the Mississippi River Valley alluvial aquifer, spring 2016
Virginia L. McGuire, Ronald C. Seanor, William H. Asquith, Wade Kress, Kellan R. Strauch
2019, Scientific Investigations Map 3439
A potentiometric surface map for spring 2016 was created for the Mississippi River Valley alluvial (MRVA) aquifer using selected available groundwater-altitude data from wells and surface-water-altitude data from streamgages. Most of the wells were measured annually or one time after installation, but some wells were measured more than one time...
Photosynthetic and respiratory responses of two bog shrub species to whole ecosystem warming and elevated CO2 at the boreal-temperate ecotone
Eric Ward, Jeffrey M . Warren, David A McLennan, Mirindi E Dusenge, Danielle A. Way, Stan D. Wullschleger, Paul J Hanson
2019, Frontiers in Forests and Global Change (2)
Peatlands within the boreal-temperate ecotone contain the majority of terrestrial carbon in this region, and there is concern over the fate of such carbon stores in the face of global environmental changes. The Spruce and Peatland Response Under Changing Environments (SPRUCE) facility aims to advance the understanding of how such...
Projected warming disrupts the synchrony of riparian seed dispersal and snowmelt streamflow
Laura G. Perry, Patrick B. Shafroth, Lauren Hay, Steven L. Markstrom, Andrew R. Bock
2019, New Phytologist (225) 693-712
• Globally, spring phenology and abiotic processes are shifting earlier with warming. Differences in the magnitudes of these shifts may decouple the timing of plant resource requirements from resource availability. In riparian forests across the northern hemisphere, warming could decouple seed dispersal from snowmelt peak streamflow, thus reducing moisture and...
Geologic map of the Poncha Pass area, Chaffee, Fremont, and Saguache Counties, Colorado
Scott A. Minor, Jonathan Saul Caine, Chester A. Ruleman, Christopher J. Fridrich, Christine F. Chan, Theodore R. Brandt, Christopher S. Holm-Denoma, Leah E. Morgan, Michael A. Cosca, V. J. Grauch
2019, Scientific Investigations Map 3436
This report presents a 1:24,000-scale geologic map, cross sections, and descriptive and interpretative text for the Poncha Pass area in central Colorado. The map area is irregular in shape, covering all of one 7 ½' quadrangle (Poncha Pass) and parts of five others (Mount Ouray, Maysville, Salida West, Salida East,...
Rare earth elements in coal and coal fly ash
Clint Scott, Allan Kolker
2019, Fact Sheet 2019-3048
The rare earth elements (REEs) are a group of 17 elements sharing similar chemical properties. They include yttrium (Y, atomic number 39), scandium (Sc, atomic number 21), and the 15 elements of the lanthanide series, atomic numbers 57 (lanthanum, La) to 71 (lutetium, Lu). Because promethium (Pm, atomic number 61)...
Evaluation of maternal penning to improve calf survival in the Chisana Caribou Herd
Layne G. Adams, Richard G. Farnell, Michelle P. Oakley, Thomas Jung, Lorne Larocque, Grant Lortie, Jamie McLelland, Mason Reid, Gretchen H. Roffler, Don Russell
2019, Wildlife Monographs (204) 5-46
Predation is a major limiting factor for most small sedentary caribou (Rangifer tarandus) populations, particularly those that are threatened or endangered across the southern extent of the species’ range. Thus, reducing predation impacts is often a management goal for improving the status of small caribou populations,...
Consistent compensatory growth offsets poor condition in trout populations
Robert Al-Chokhachy, Ryan Kovach, Adam J. Sepulveda, Jeff Strait, Bradley B. Shepard, Clint C. Muhlfeld
2019, Freshwater Biology (64) 2120 -2130
1. Compensatory growth – when individuals in poor condition grow rapidly to “catch up” to conspecifics – may be a mechanism that allows individuals to tolerate stressful environmental conditions, both abiotic and biotic. This phenomenon has been documented fairly widely in laboratory and field experiments, but evidence for compensatory growth...
Guidelines and standard procedures for high-frequency groundwater-quality monitoring stations—Design, operation, and record computation
Timothy M. Mathany, John Franco Saraceno, Justin T. Kulongoski
2019, Techniques and Methods 1-D7
High-frequency water-quality monitoring stations measure and transmit data, often in near real-time, from a wide range of aquatic environments to assess the quality of the Nation’s water resources. Common instrumentation for high-frequency water-quality data collection uses a multi-parameter sonde, which typically has sensors that measure and record water temperature, specific...
Evidence of region‐wide bat population decline from long‐term monitoring and Bayesian occupancy models with empirically informed priors
Thomas J. Rodhouse, Rogelio M. Rodriguez, Katharine M. Banner, Patricia C. Ormsbee, Jenny Barnett, Kathryn Irvine
2019, Ecology and Evolution (9) 11078-11088
Strategic conservation efforts for cryptic species, especially bats, are hindered by limited understanding of distribution and population trends. Integrating long‐term encounter surveys with multi‐season occupancy models provides a solution whereby inferences about changing occupancy probabilities and latent changes in abundance can be supported. When harnessed to a Bayesian inferential paradigm,...
Evaluation of chemical and hydrologic processes in the eastern Snake River Plain Aquifer based on results from geochemical modeling, Idaho National Laboratory, eastern Idaho
Gordon W. Rattray
2019, Professional Paper 1837-B
Nuclear research activities at the U.S. Department of Energy (DOE) Idaho National Laboratory (INL) produced liquid and solid chemical and radiochemical wastes that were disposed to the subsurface resulting in detectable concentrations of some waste constituents in the eastern Snake River Plain (ESRP) aquifer. These waste constituents may affect the...
Willingness to pay for conservation of transborder migratory species: A case study of the Mexican free-tailed bat in the United States and Mexico
Michelle Haefele, John B. Loomis, Robert W. Merideth, Aaron M. Lien, Darius J. Semmens, Jim Dubovsky, Ruscena Wiederholt, Wayne E. Thogmartin, Ta-Ken Huang, Gary McCracken, Laura Lopez-Hoffman, Rodrigo Medellin, James E. Diffendorfer
2019, Environmental Management (62) 229-240
We estimated U.S. and Mexican citizens’ willingness to pay (WTP) for protecting habitat for a transborder migratory species, the Mexican free-tailed bat (Tadarida brasiliensis mexicana), using the contingent valuation method. Few contingent valuation surveys have evaluated whether households in one country would pay to protect habitat in another...
Quantifying spirorchiid eggs in splenic histological samples from green turtles
Felipe D’Azeredo, Meira Meira-Filho, Thierry M. Work
2019, Helminthologia (56) 269-272
No abstract available....
Drought-mediated extinction of an arid-land amphibian: Insights from a spatially explicit dynamic occupancy model
Erin R Zylstra, Don E. Swann, Blake R. Hossack, Robert J Steidl
Erin L. Muths, editor(s)
2019, Ecological Applications (29)
Understanding how natural and anthropogenic processes affect population dynamics of species with patchy distributions is critical to predicting their responses to environmental changes. Despite considerable evidence that demographic rates and dispersal patterns vary temporally in response to an array of biotic and abiotic processes, few applications of metapopulation theory have...
Using social-context matching to improve spatial function-transfer performance for cultural ecosystem service models
Darius J. Semmens, Benson C. Sherrouse, Zachary H. Ancona
2019, Ecosystem Services (38)
Recreational and aesthetic enjoyment of public lands is increasing across a wide range of activities, highlighting the need to assess and adapt management to accommodate these uses. Despite a growing number of studies on mapping cultural ecosystem services, most are local-scale assessments that rely on costly and time-consuming primary data...
Monarch habitat as a component of multifunctional landscape restoration using continuous riparian buffers
Darius J. Semmens, Zachary H. Ancona
2019, Frontiers in Environmental Science (7)
Stabilizing the eastern, migratory population of monarch butterflies (Danaus plexippus) is expected to require substantial habitat restoration on agricultural land in the core breeding area of the Upper Midwestern U.S. Previous research has considered the potential to utilize marginal land for this purpose because of its low productivity, erodible soils,...
Detection of rock bridges by infrared thermal imaging and modeling
Antoine Guerin, Michel Jaboyefoff, Brian D. Collins, Marc-Henri Derron, Greg M. Stock, Battista Matasci, Martin Boesiger, Caroline Lefeuvre, Yury Y. Podladchikov
2019, Scientific Reports (9)
Characterization of rock discontinuities and rock bridges is required to define stability conditions of fractured rock masses in both natural and engineered environments. Although remote sensing methods for mapping discontinuities have improved in recent years, remote detection of intact rock bridges on cliff faces remains challenging,...
How characteristic is the species characteristic selection scale?
Erica F. Stuber, Joseph J. Fontaine
2019, Global Ecology and Biogeography (28) 1839-1854
AimThe importance of framing investigations of organism–environment relationships to interpret patterns at relevant spatial scales is increasingly recognized. However, most research related to environmental relationships is single-scaled, implicitly or explicitly assuming that a “species characteristic selection scale” exists. We tested the premise that a single characteristic scale...
Ecosystem change and population declines in gulls: Shifting baseline considerations for assessing ecological integrity of protected areas
Bruce Laurich, Christine Drake, Owen Gorman, Courtney Ivrine, Jenna MacLaurin, Chloe Chartrand, Craig E. Hebert
2019, Journal of Great Lakes Research (45) 1215-1227
In Lake Superior's Pukaskwa National Park (PNP) in northern Ontario, Canada, herring gull (Larus argentatus) population size is used as an indicator of ecological integrity. Since the 1970s, gull populations have declined by 70% suggesting deteriorating park conditions. However, most other...
