Apatite trace element geochemistry and cathodoluminescent textures—Acomparison between regional magmatism and the Pea Ridge IOA-REE andBoss IOCG deposits, southeastern Missouri iron metallogenic province, USA
Celestine N. Mercer, Kathryn E. Watts, Juliane Gross
2020, Ore Geology Reviews (116)
The southeast Missouri iron metallogenic province contains a remarkable wealth of historically important Fe, Cu, Au, and rare earth element (REE) deposits including the Pea Ridge iron oxide-apatite-rare earth element (IOA-REE) deposit and the Boss iron oxide-copper-gold (IOCG) deposit. These deposits are coeval with silicic and intermediate composition magmatism in...
Late Quaternary sea-level history of Saipan, Commonwealth of the Northern Mariana Islands, USA: A test of tectonic uplift and glacial isostatic adjustment models
Daniel R. Muhs, Eugene S. Schweig, Kathleen R. Simmons
2020, Geological Society of America Bulletin (132) 863-883
In 1979, S. Uyeda and H. Kanamori proposed a tectonic model with two end members of a subduction-boundary continuum: the “Chilean” type (shallow dip of the subducting plate, great thrust events, compression, and uplift of the overriding plate) and a “Mariana” type (steep dip of the subducting plate, no great...
Winter climate change and the poleward range expansion of a tropical invasive tree (Brazilian pepper ‐ Shinus terebinthifolius)
Michael Osland, Laura Feher
2020, Global Change Biology (26) 607-615
Winter climate change is expected to lead to the tropicalization of temperate ecosystems, where tropical species expand poleward in response to a decrease in the intensity and duration of winter temperature extremes (i.e., freeze events). In the southeastern United States, freezing temperatures control the northern range limits of many invasive...
Local abundance of Ixodes scapularis in forests: Effects of environmental moisture, vegetation characteristics, and host abundance
Howard S. Ginsberg, Eric L. Rulison, Jasmine L. Miller, Genevieve Pang, Isis M. Arsnoe, Graham J. Hickling, Nicholas H. Ogden, Roger A. LeBrun, Jean I. Tsao
2020, Ticks and Tick-borne Diseases (11)
Ixodes scapularis is the primary vector of Lyme disease spirochetes in eastern and central North America, and local densities of this tick can affect human disease risk. We sampled larvae and nymphs from sites in Massachusetts and Wisconsin, USA, using flag/drag devices and by collecting ticks from hosts, and measured environmental...
Geoacoustic inversion for a New England mud patch sediment using the silt-suspension theory of marine mud
Elisabeth M. Brown, Ying-Tsong Lin, Jason Chaytor, William L. Siegmann
2020, IEEE Journal of Oceanic Engineering (45) 144-160
This article provides an application of the silt-suspension theory to a Bayesian-inference inversion for the geo-acoustic parameters in marine mud. The theory, with consequences that have been developed recently, postulates a suspension of water and clay mineral card-houses that supports moderately dilute concentrations of silt particles. The approach is an...
Spatial variability of phytoplankton in a shallow tidal freshwater system reveals complex controls on abundance and community structure
Elizabeth B. Stumpner, Brian A. Bergamaschi, Tamara E. C. Kraus, Alexander Parker, Francis Wilkerson, Bryan D. Downing, Richard Dugdale, Michael T. Murrell, Kurt D. Carpenter, James Orlando, Carol Kendall
2020, Science of the Total Environment (700)
Estuaries worldwide are undergoing changes to patterns of aquatic productivity because of human activities that alter flow, impact sediment delivery and thus the light field, and contribute nutrients and contaminants like pesticides and metals. These changes can influence phytoplankton communities, which in turn can...
Modeling strategies and evaluating success during repatriations of elusive and endangered species
Brian Folt, Conor P. McGowan, D.A. Steen, S. Picolomini, M. Hoffman, J.C. Godwin, C. Guyer
2020, Animal Conservation (23) 273-285
Wildlife repatriation is an important tool to decrease extinction risk for imperiled species, but successful repatriations require significant time, resources and planning. Because repatriations can be long and expensive processes, clear release strategies and monitoring programs are essential to efficiently use resources and evaluate success. However,...
Induced biological soil crust controls on wind erodibility and dust (PM10) emissions
Stephen E. Fick, Nichole N. Barger, John Tatarko, Michael C. Duniway
2020, Earth Surface Processes and Landforms (45) 224-236
Inducing biological soil crust (biocrust) development is an appealing approach for dust mitigation in drylands due to the resistance biocrusts can provide against erosion. Using a portable device, we evaluated dust emissions from surfaces either inoculated with biocrust, amended with a plant‐based soil stabilizer, or both at varying wind friction...
Effects of climate-related variability in storage on streamwater solute concentrations and fluxes in a small forested watershed in the Southeastern United States
Brent T. Aulenbach
2020, Hydrological Processes (34) 189-208
Streamwater quality can be affected by climate-related variability in hydrologic state, which controls flow paths and affects biogeochemical processes. Thirty-one years of input/output solute fluxes at Panola Mountain Research Watershed, a small, forested, seasonally water-limited watershed near Atlanta, Georgia, were used to quantify the effects of climatic-related variability in storage...
Reproductive ecology and movement of pallid sturgeon in the upper Missouri River, Montana
Luke M. Holmquist, Christopher S. Guy, Anne Tews, David J. Trimpe, Molly A. H. Webb
2020, Article
Successful recruitment of endangered pallid sturgeon has not been documented in the upper Missouri River basin for decades, and research on the reproductive ecology of pallid sturgeon has been hindered by low sample size. A conservation propagation program was initiated in the 1990s, and the oldest age class of hatchery‐origin...
Applying spatially explicit capture–recapture models to estimate black bear density in South Carolina
Shefali Azad, Katherine McFadden, Joseph D. Clark, Tammy Wactor, David S. Jachowski
2020, Wildlife Society Bulletin (43) 500-507
Population density is an important component of wildlife management decisions, but can be difficult to estimate directly for an itinerant, wide‐ranging species such as the American black bear (Ursus americanus ). In South Carolina, USA, where there has been growth in black bear populations and bear–human‐conflict reports during the past several...
Historical changes in fish communities in urban streams of the southeastern U.S. and the relative importance of water-quality stressors
Michael R. Meador
2020, Ecology of Freshwater Fish (29) 156-169
A total of 71 stream sites representing a gradient of urban land use was sampled across the Piedmont of the southeastern U.S. in 2014. Fish data collected (observed) at each site were compared to an expected community based on georeferenced historical (~1950 - ~1990) species occurrence records for stream...
Regional Global Navigation Satellite System networks for crustal deformation monitoring
Jessica R. Murray, Noel Bartlow, Yehuda Bock, Benjamin A. Brooks, James H. Foster, Jeffery T. Freymueller, William C. Hammond, Kathleen Hodgkinson, Ingrid A. Johanson, Alberto Lopez-Venegas, Doerte Mann, Glen Mattioli, Timothy Melbourne, David Mencin, Emily K. Montgomery-Brown, Mark Hunter Murray, Robert Smalley Jr., Valerie Thomas
2020, Seismological Research Letters (91) 552-572
Regional networks of Global Navigation Satellite System (GNSS) stations cover seismically and volcanically active areas throughout the United States. Data from these networks have been used to produce high‐precision, three‐component velocity fields covering broad geographic regions as well as position time series that track time‐varying crustal deformation. This information has...
De facto water reuse: Bioassay suite approach delivers depth and breadth in endocrine active compound detection
Elizabeth K Medlock Kakaley, Brett R. Blackwell, Mary C. Cardon, Justin M. Conley, Nicola Evans, David J. Feifarek, Edward Furlong, Susan T. Glassmeyer, L. Earl Gray, Phillip C. Hartig, Dana W. Kolpin, Marc A. Mills, Laura Rosenblum, Daniel L. Villeneuve, Vickie S. Wilson
2020, Science of the Total Environment (699) 1-12
Although endocrine disrupting compounds (EDCs) have been detected in wastewater and surface waters worldwide using a variety of in vitro effects-based screening tools, e.g. bioassays, few have examined potential attenuation of environmental contaminants by both natural (sorption, degradation, etc) and anthropogenic (water treatment practices) processes. This study used several bioassays...
A range-wide model of contemporary, omnidirectional connectivity for the threatened Mojave desert tortoise
Miranda E Gray, Brett G. Dickson, Kenneth Nussear, Todd Esque, Tony Chang
2020, Ecosphere (10)
As habitat destruction leads to species extinctions globally, conservation planning that accounts for population-level connectivity and gene flow is an urgent priority. Models that only approximate habitat potential are incomplete because areas of high habitat potential may be isolated, whereas intermixed areas of lower habitat potential may still be critical...
Permafrost hydrology drives the assimilation of old carbon by stream food webs in the Arctic
Jonathon A O'Donnell, Michael P. Carey, Joshua C. Koch, Xiaomei Xu, Brett Poulin, Jennifer Walker, Christian E. Zimmerman
2020, Ecosystems (23) 435-453
Permafrost thaw in the Arctic is mobilizing old carbon (C) from soils to aquatic ecosystems and the atmosphere. Little is known, however, about the assimilation of old C by aquatic food webs in Arctic watersheds. Here, we used C isotopes (δ13C, Δ14C) to quantify C assimilation by biota across 12...
Attack of the PCR clones: Rates of clonality have little effect on RAD-seq genotype calls
Peter T. Euclide, Garrett McKinney, Matthew Bootsma, Charlene Tarsa, Mariah Meek, Wesley Larson
2020, Molecular Ecology Resources (20) 66-78
Interpretation of high-throughput sequence data requires an understanding of how decisions made during bioinformatic data processing can influence results. One source of bias that is often cited is PCR clones (or PCR duplicates). PCR clones are common in restriction site-associated sequencing (RAD-seq) data sets, which are...
Influence of a high-head dam as a dispersal barrier to fish community structure of the Upper Mississippi River
Rebekah L. Anderson, Cory A. Anderson, James H. Larson, Brent C. Knights, Jonathan M. Vallazza, Sean E. Jenkins, James T. Lamer
2020, River Research and Applications (36) 47-56
In river systems, high‐head dams may increase the distance‐decay of fish community similarity by creating nearly impermeable dispersal barriers to certain species from upstream reaches. Substantial evidence suggests that migratory species are impacted by dams, and most previous studies in stream/river networks have focused on small streams and headwaters. Here,...
Porphyry copper potential of the U.S. Southern Basin and Range using ASTER data integrated with geochemical and geologic datasets to assess potential near-surface deposits in well-explored permissive tracts
John C. Mars, Robinson Jr., Jane M. Hammarstrom, Lukas Zurcher, Helen A. Whitney, Federico Solano, Mark E. Gettings, Stephen Ludington
2020, Economic Geology (114) 1095-1121
ArcGIS was used to spatially assess and rank potential porphyry copper deposits using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data together with geochemical and geologic datasets in order to estimate undiscovered deposits in the southern Basin and Range Province in the southwestern United States. The assessment was done...
Incorporating climate change into invasive species management: Insights from managers
Evelyn M. Beaury, Emily J. Fusco, Michelle R. Jackson, Brittany B. Laginhas, Toni Lyn Morelli, Jenica M. Allen, Valerie J. Pasquarella, Bethany A. Bradley
2020, Biological Invasions (22) 233-252
Invasive alien species are likely to interact with climate change, thus necessitating management that proactively addresses both global changes. However, invasive species managers’ concerns about the effects of climate change, the degree to which they incorporate climate change into their management, and what stops them from doing so remain unknown....
Temporal patterns of induced seismicity in Oklahoma revealed from multi-station template matching
Robert J. Skoumal, Michael R. Brudzinski, Brian S. Currie, Rosamiel Ries
2020, Journal of Seismology (24) 921-935
Over the past decade, Oklahoma became the most seismically active region of the mid-Continental USA as a result of industry operations. However, seismic network limitations and completeness of earthquake catalogs have restricted the types of analyses that can be performed. By applying multi-station template matching on the 23,889 cataloged earthquakes...
A meta-analysis of global crop water productivity of three leading world crops (wheat, corn, and rice) in the irrigated areas over three decades
Daniel J. Foley, Prasad Thenkabail, Itiya Aneece, Pardhasaradhi Teluguntla, Adam Oliphant
2020, International Journal of Digital Earth (13) 939-975
The overarching goal of this study was to perform a comprehensive meta-analysis of irrigated agricultural Crop Water Productivity (CWP) of the world’s three leading crops: wheat, corn, and rice based on three decades of remote sensing and non-remote sensing-based studies. Overall, CWP data from 148 crop growing study sites (60...
Understanding melt evolution and eruption dynamics of the 1666 C.E. eruption of Cinder Cone, Lassen Volcanic National Park, California: Insights from olivine-hosted melt inclusions
Kristina J Walowski, P.J. Wallace, K.V. Cashman, J.K. Marks, Michael A. Clynne, P. Ruprecht
2020, Journal of Volcanology and Geothermal Research (387)
Cinder Cone is the youngest scoria cone volcano in the continental United States. Erupted in 1666 C.E. within what is now Lassen Volcanic National Park, Cinder Cone is an un-vegetated scoria cone with well-preserved lava flows and tephra deposits that display...
Species-specific responses to wetland mitigation among amphibians in the Greater Yellowstone Ecosystem
LK Swartz, WH Lowe, Erin L. Muths, Blake R. Hossack
2020, Restoration Ecology (28) 206-214
Habitat loss and degradation are leading causes of biodiversity declines, therefore assessing the capacity of created mitigation wetlands to replace habitat for wildlife has become a management priority. We used single season occupancy models to compare the occurrence of larvae of four species of pond‐breeding amphibians in wetlands created for...
Maximum entropy derived statistics of sound speed structure in a fine-grained sediment inferred from sparse broadband acoustic measurements on the New England continental shelf
David P. Knobles, Preston S. Wilson, J.A. Goff, L. Wan, M.J. Buckingham, Jason Chaytor, Mohsen Badiey
2020, IEEE Journal of Oceanic Engineering (45) 161-173
Marginal probability distributions for parameters representing an effective sound-speed structure of a fine-grained sediment are inferred from a data ensemble maximum entropy method that utilizes a sparse spatially distributed set of received pressure time series resulting from multiple explosive sources in a shallow-water ocean environment possessing significant spatial variability of...
