Liquefaction and related ground failure from July 2019 Ridgecrest earthquake sequence
Paolo Zimmaro, Chukwuebuka C Nweke, Janis Hernandez, Kenneth S Hudson, Martin B Hudson, Sean K Ahdi, Matt Boggs, Craig A. Davis, Christine A. Goulet, Scott J Brandenberg, Kenneth W. Hudnut, Jonathan P. Stewart
2020, Bulletin of the Seismological Society of America (110) 1549-1566
The 2019 Ridgecrest earthquake sequence produced a 4 July M 6.5 foreshock and a 5 July M 7.1 mainshock, along with 23 events with magnitudes greater than 4.5 in the 24 hr period following the mainshock. The epicenters of the two principal events were located in the Indian Wells Valley, northwest...
Factors influencing the probability of hydraulic fracturing induced seismicity in Oklahoma
Rosamiel Ries, Michael R. Brudzinski, Robert Skoumal, Brian S. Currie
2020, Bulletin of the Seismological Society of America (110) 2272-2282
Injection‐induced seismicity became an important issue over the past decade, and although much of the rise in seismicity is attributed to wastewater disposal, a growing number of cases have identified hydraulic fracturing (HF) as the cause. A recent study identified regions in Oklahoma where ≥75%...
Conservative plumage masks extraordinary phylogenetic diversity in the Grallaria rufula (Rufous Antpitta) complex of the humid Andes
Terry Chesser, Morton L Isler, Andres M Cuervo, C Daniel Cadena, Spencer C Galen, Laura M. Bergner, Robert C. Fleischer, Gustavo A Bravo, Daniel F Lane, Peter A. Hosner
2020, Auk (137)
The Grallaria rufula complex is currently considered to consist of 2 species, G. rufula (Rufous Antpitta) and G. blakei (Chestnut Antpitta). However, it has been suggested that the complex, populations of which occur in humid montane forests from Venezuela to Bolivia, comprises a suite of vocally distinct yet morphologically cryptic...
Effects of barred owl (Strix varia) removal on population demography of northern spotted owls (Strix occidentalis caurina) in Washington and Oregon—2019 annual report
J. David Wiens, Katie M. Dugger, Damon B. Lesmeister, Krista E. Dilione, David C. Simon
2020, Open-File Report 2020-1089
Strix occidentalis caurina (northern spotted owl; hereinafter referred to as spotted owl) have rapidly declined throughout the subspecies’ geographic range. Competition with invading Strix varia (barred owl) has been identified as an immediate cause of those declines. A pilot study in California showed that removal of barred owls coupled with...
Evaluation of the Washington State Department of Transportation stormwater monitoring and effectiveness program for 2014–19
Craig A. Senter, Richard W. Sheibley
2020, Open-File Report 2020-1079
The U.S. Geological Survey was asked by the Washington State Department of Transportation to provide technical assistance as a third-party reviewer of their stormwater effectiveness monitoring program during the transition between the completion of the 2014 Washington State Department of Ecology permit requirements and start of the new 2019 Washington...
Groundwater age and susceptibility of south Atlantic and Gulf Coast principal aquifers of the contiguous United States
John E. Solder
2020, Scientific Investigations Report 2020-5050
Groundwater susceptibility to contamination was investigated by using environmental tracer-based groundwater age metrics in the south Atlantic and Gulf Coast principal aquifer systems of the Southeastern Coastal Plain, Mississippi embayment–Texas coastal uplands, and the Coastal Lowlands. Samples of dissolved gas, tritium, sulfur hexafluoride, tritiogenic helium, and carbon-14 were collected from...
Introduction to the Special Issue on the 2019 Ridgecrest, California, Earthquake Sequence
Susan E. Hough, Zachary E. Ross, Timothy E. Dawson
2020, Bulletin of the Seismological Society of America (110) 1395-1399
No abstract available. ...
Genomic architecture and repertoire of the rainbow trout immunoglobulin light chain genes
Katherine Rego, John Hansen, Erin S Bromage
2020, Developmental and Comparative Immunology (113)
The genomic loci encoding the four immunoglobulin light chains (IgL1, IgL2, IgL3, and IgL4) in the Swanson trout genome assembly were annotated in order to provide a measurement of the potential IgL repertoire. IgL1 and IgL3 gene segments are co-localized on chromosomes 21, 18, 15, and 7 while IgL2 and...
A new species of freshwater mussel in the genus Popenaias Frierson, 1927, from the Gulf coastal rivers of central Mexico (Bivalvia: Unionida: Unionidae) with comments on the genus
Kentaro Inoue, Kevin S. Cummings, Jeremy S. Tiemann, Thomas D. Miller, Nathan Johnson, Chase H. Smith, Charles R. Randklev
2020, Zootaxa (4816) 457-490
The Gulf coastal drainages of central Mexico are a faunal transition zone between North and South America and harbor a unique assemblage of freshwater mussels (Bivalvia: Unionida). However, little information is available regarding the taxonomy, distribution, and evolutionary history of the Mexican mussel fauna due to limited sampling over the...
Availability and timing of fathead minnow supplementation influence largemouth bass survival and production in rearing ponds
Steven R. Chipps, Matthew J. Ward
2020, Open Journal of Animal Sciences (10) 337-345
Adjustments to rearing practices should be justified with increases in production, stocking success, or angler satisfaction. Largemouth bass (Micropterus salmoides) production was assessed between hatchery ponds where fish were restricted to an invertebrate diet or received supplemental fathead minnow (Pimephales promelas) forage during 2015. At harvest, age-0 bass yield was...
Decision analysis for greater insights into the development and evaluation of Chinook salmon restoration strategies in California’s Central Valley
James Peterson, Adam Duarte
2020, Restoration Ecology (28) 1596-1609
Considerable amounts of resources have been invested in ecological restoration projects across the globe to restore ecosystem integrity. Restoration strategies are often diverse and have been met with mixed success. In this paper, we describe the Chinook salmon (Oncorhynchus tshawytscha) decision-support models developed by the Central Valley Project Improvement Act...
Trends in inland commercial fisheries in the United States
Devin N. Murray, David B. Bunnell, Mark W. Rogers, Abigail Lynch, Beard Jr., Simon Funge-Smith
2020, Fisheries Magazine (45) 585-596
Inland fisheries, defined as finfish caught in lakes, rivers, and other water bodies, provide economic value and a source of protein at local and international levels. However, no comprehensive compilation of U.S. inland commercial fisheries exists. We sought to obtain data across all 50 states during 1990–2015 and noted a...
On the use of receiver operating character tests for evaluating spatial earthquake forecasts
Thomas E. Parsons
2020, Geophysical Research Letters (47)
Spatial forecasts of triggered earthquake distributions have been ranked using receiver operating characteristic (ROC) tests. The test is a binary comparison between regions of positive and negative forecast against positive and negative presence of earthquakes. Forecasts predicting only positive changes score higher than Coulomb methods, which predict positive and negative...
ShakeAlert Earthquake Early Warning System Performance During the 2019 Ridgecrest Earthquake Sequence
Angela Chung, Men-Andrin Meier, Jennifer Andrews, Maren Bose, Brendan Crowell, Jeffrey J. McGuire, Deborah Smith
2020, Bulletin of the Seismological Society of America (110) 1904-1923
During July 2019, a sequence of earthquakes including a Mw6.4 foreshock and a Mw7.1 mainshock occurred near Ridgecrest, California. ShakeAlert, the U.S. Geological Survey (USGS) ShakeAlert public Earthquake Early Warning (EEW) system being developed for the U.S. West Coast, was operational during this time, though public alerting was only available...
Tropical understory herbaceous community responds more strongly to hurricane disturbance than to experimental warming
Deborah K. Kennard, David Matlaga, Joanne Sharpe, Clay C. King, Aura M. Alonso-Rodriguez, Sasha C. Reed, Molly A. Cavaleri, Tana E. Wood
2020, Ecology and Evolution (10) 8906-8915
The effects of climate change on tropical forests may have global consequences due to the forests’ high biodiversity and major role in the global carbon cycle. In this study, we document the effects of experimental warming on the abundance and composition of a tropical forest floor...
Tests in a semi-natural environment suggest that bait and switch strategy could be used to control invasive Common Carp
Peter J Hundt, Jon Amberg, Blake W. Sauey, Kristen Vacura, Przemyslaw G. Bajer
2020, Management of Biological Invasions (11) 428-440
Common Carp (Cyprinus carpio Linnaeus, 1758), is a highly invasive species that has had profound effects on biodiversity and ecosystem services. Many Carp management methods have been applied including physical removal, pesticide treatments of whole lakes, and water drawdowns. Herein, we...
Avian eggshell thickness in relation to egg morphometrics, embryonic development, and mercury contamination
Sarah H. Peterson, Josh T. Ackerman, Mark P. Herzog, Matthew Toney, Breanne Cooney, C. Alex Hartman
2020, Ecology and Evolution (10) 8715-8740
Eggshell thickness is important for physiological, ecological, and ecotoxicological studies on birds; however, empirical eggshell thickness measurements for many species and regions are limited. We measured eggshell thickness at the equator and the egg poles for 12 avian species and related eggshell thickness to egg morphometrics,...
Late Cenozoic climate change paces landscape adjustments to Yukon River capture
Adrian Bender, Richard O. Lease, Lee B. Corbett, Paul R. Bierman, Marc Caffee, Tammy M. Rittenour
2020, Nature Geoscience (13) 571-575
Late Cenozoic cooling and changes in glacial–interglacial cycle tempo are thought to increase global rates of erosion starting ~3 million years ago (Ma). Bedrock rivers set rates and patterns of erosion in most landscapes, but constraints on river response to late Cenozoic climate change remain elusive....
Salinity, water level, and forest structure contribute to baldcypress (Taxodium distichum) rhizosphere and endosphere community structure
Candice Y Lumibao, Elizabeth Kimbrough, Steven Formel, Richard Day, Andrew From, William H. Conner, Ken Krauss, Sunshine A Van Bael
2020, Wetlands (40) 2179-2188
As rising sea levels alter coastal ecosystems, there is a pressing need to examine the effects of saltwater intrusion on coastal communities. Using 16S Illumina profiling, we characterized the communities of baldcypress tree (Taxodium distichum) root endosphere and rhizosphere soil bacteria. Our study utilized established sites along salinity and flooding...
Anticipating future learning affects current control decisions: A comparison between passive and active adaptive management in an epidemiological setting
Benjamin D Atkins, Chris P. Jewell, Michael C. Runge, Matthew J. Ferrari, Katriona Shea, William J. M. Probert, Michael J. Tildesley
2020, Journal of Theoretical Biology (506)
Infectious disease epidemics present a difficult task for policymakers, requiring the implementation of control strategies under significant time constraints and uncertainty. Mathematical models can be used to predict the outcome of control interventions, providing useful information to policymakers in the event...
Biological nitrogen fixation across major biomes in Latin America: Patterns and global change effects
Carla R. G. Reis, Felipe S. Pacheco, Sasha C. Reed, Graciela Tejada, Gabriela B. Nardoto, Maria C. Forti, Jean Ometto
2020, Science of the Total Environment (746)
Biological nitrogen fixation (BNF) supports terrestrial primary productivity and plays key roles in mediating human-induced changes in global nitrogen (N) and carbon cycling. However, there are still critical uncertainties in our understanding of the amount of BNF occurring across terrestrial ecosystems, and of how terrestrial BNF will respond to global...
Conditions and timing of high-grade metamorphism and ductile deformation of the southern segment of the Central Anatolian Ophiolite
Molly S. Radwany, Leah E. Morgan, Donna L. Whitney
2020, International Journal of Earth Sciences (109) 2393-2406
Ophiolitic fragments scattered over a wide area of Central Anatolia exhibit varying degrees of metamorphism, from unmetamorphosed to upper amphibolite facies, although geochemical similarities suggest they are all part of the Central Anatolian Ophiolite (CAO). Magmatic crystallization of oceanic crust in the CAO at ~ 91 Ma coincided with high-grade metamorphism of rocks...
Characterization of the unconventional Tuscaloosa marine shale reservoir in southwestern Mississippi, USA: Insights from optical and SEM petrography
Celeste D. Lohr, Brett J. Valentine, Paul C. Hackley, Frank T. Dulong
2020, Marine and Petroleum Geology (121)
This study presents new optical petrography and electron microscopy data, interpreted in the context of previously published petrophysical, geochemical, and mineralogical data, to further characterize the Tuscaloosa marine shale (TMS) as an unconventional reservoir in southwestern Mississippi. The basal high resistivity zone has a higher proportion of Type II sedimentary...
Mapping croplands of Europe, Middle East, Russia, and Central Asia using Landsat 30-m data, machine learning algorithms and Google Earth Engine
Aparna Phalke, Mutlu Ozdogan, Prasad Thenkabail, Tyler Erickson, Noel Gorelick
2020, ISPRS Journal of Photogrammetry and Remote Sensing (167) 104-122
Accurate and timely information on croplands is important for environmental, food security, and policy studies. Spatially explicit cropland datasets are also required to derive information on crop type, crop yield, cropping intensity, as well as irrigated areas. Large area defined as continental to global cropland mapping is challenging...
An updated genetic marker for detection of Lake Sinai Virus and metagenetic applications
Deborah D. Iwanowicz, Judy Y. Wu-Smart, Tugce Olgun, Autumn H. Smart, Clint Otto, Dawn Lopez, Jay D. Evans, Robert S. Cornman
2020, PeerJ (8)
BackgroundLake Sinai Viruses (LSV) are common RNA viruses of honey bees (Apis mellifera) that frequently reach high abundance but are not linked to overt disease. LSVs are genetically heterogeneous and collectively widespread, but despite frequent detection in surveys, the ecological and geographic factors structuring their distribution in A. mellifera are not...
