Pesticide mixtures show potential toxicity to aquatic life in U.S. streams, water years 2013-2017
S. Alex Covert, Megan E. Shoda, Sarah M. Stackpoole, Wesley W. Stone
2020, Science of the Total Environment (745)
During water years (WY) 2013–2017, the U.S. Geological Survey, National Water-Quality Assessment (NAWQA) Project, sampled the National Water Quality Network – Rivers and Streams (NWQN) year-round and reported on 221 pesticides at 72 sites across the United States in agricultural, developed, and mixed land use watersheds. The Pesticide Toxicity...
Case Study 4: NABat acoustic monitoring allows inferences about bat populations at multiple scales
Brian Reichert, Thomas J. Rodhouse, Susan Loeb, Jason Rae
2020, Book chapter, Bat echolocation research: A handbook for planning and conducting acoustic studies
North American bats face unprecedented risks from continuing and emerging threats including white-nose syndrome, wind energy development, and habitat loss. Many species of bats are thought to be recently experiencing unparalleled population declines unlike any previously observed (O’Shea et al. 2016). The North American Bat Monitoring Program (NABat) was...
Introduction to Special Issue: Gas Hydrates in Green Canyon Block 955, deep-water Gulf of Mexico: Part I
Ray Boswell, Timothy Collett, Ann E. Cook, Peter B. Flemings
2020, AAPG Bulletin (104) 1843-1846
No abstract available. ...
Mapping stream and floodplain geomorphic characteristics with the Floodplain and Channel Evaluation Tool (FACET) in the Mid-Atlantic Region, United States
Marina J. Metes, Kristina G. Hopkins, Labeeb Ahmed, Samuel Lamont, Peter R. Claggett, Gregory E. Noe
2020, Conference Paper, Proceedings of the geomorphometry 2020 conference
Quantifying channel and floodplain geomorphic characteristics is essential for understanding and modeling sediment and nutrient dynamics in fluvial systems. The increased availability of high-resolution elevation data from light detection and ranging (lidar) has helped improve methods for extracting these metrics at a greater accuracy across regional scales. The Floodplain and...
Pressure coring operations during The University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition in Green Canyon Block 955, northern Gulf of Mexico
Carla Thomas, Stephen C. Phillips, Peter B. Flemings, Manasij Santra, Helen Hammon, Timothy Collett, Ann Cook, Tom Pettigrew, Mike Mimitz, Melanie Holland, Peter Schultheiss
2020, AAPG Bulletin (104) 1877-1901
In May 2017, The University of Texas Hydrate Pressure Coring Expedition Gulf of Mexico 2-1 (UT-GOM2-1) drilled two adjacent holes in Green Canyon Block 955 in the deep-water Gulf of Mexico as part of The University of Texas at Austin and US Department of Energy Deepwater Methane Hydrate Characterization and...
Assessing the long-term earthquake risk for the US National Bridge Inventory (NBI)
Kishor S. Jaiswal, N. Simon Kwong, S. S. Yen, D. Bausch, Kuo-wan Lin, Nico Luco, David J. Wald, J. Rozelle
2020, Conference Paper, Proceedings of the 17th World Conference on Earthquake Engineering
We estimate annualized earthquake loss associated with over 600,000 bridges located throughout the contiguous United States. Each year, the Federal Highway Administration, in partnership with State Departments of Transportation, undertake a massive exercise to update the National Bridge Inventory (NBI) by combining data from states, federal agencies, local jurisdictions, and...
Photosynthetic and respiratory acclimation of understory shrubs in response to in situ experimental warming of a wet tropical forest
Kelsey R. Carter, Tana E Wood, Sasha C. Reed, Elsa C. Schwartz, Madeline B. Reinsel, Xi Yang
2020, Frontiers in Forests and Global Change (3)
Despite the importance of tropical forests to global carbon balance, our understanding of how tropical plant physiology will respond to climate warming is limited. In addition, the contribution of tropical forest understories to global carbon cycling is predicted to increase with rising temperatures, however, in situ warming studies of tropical forest plants...
Assessing the distribution and habitat needs of the Least Darter and sympatric species of the Ozark and Arbuckle Mountain ecoregions
Shannon K. Brewer, D. Sewdberg, R. Mollenhauer, J. Dattilo
2020, Cooperator Science Series CSS-146-2020
Limited information is known about factors driving the distribution of Least Darter in Oklahaoma. The Least Darter occurs in the Ozark Highland and Arbuckle Uplift ecoregions of Oklahoma which represent the southern extent of its range. Least Darter was historically recorded in Oklahoma from groundwater-fed streams. Our study objectives were...
An ecological and conservation perspective
C. LeAnn White, Julia S. Lankton, Daniel P. Walsh, Jonathan M. Sleeman, Craig Stephen
2020, Book chapter, One health: The theory and practice of integrated health approaches
Natural ecosystems are facing unprecedented threats which directly threaten human well-being through decreases in critical ecosystem services (IPBES 2019). The top five drivers causing the largest global impacts to biodiversity and ecosystem services include: 1) changes in land and sea use; 2) direct exploitation of organisms; 3) climate change; 4)...
Impacts of grade control structure installations on hydrology and sediment transport as an adaptive management strategy
Deborah Tosline, Laura M. Norman, Blair P. Greimann, Jay Cederberg, Victor Huang, Benjamin L. Ruddell
2020, Final Report ST-2017-1751-01
The goal of this research was to examine the impacts of Grade Control Structure (GCS) installations at the Heard Scout Pueblo (HSP) study site in the City of Phoenix, Arizona, USA. The study site is around a high-use trail system and is comprised of eroded and incised channels that conduct...
Assessing the efficacy of protected and multiple-use lands for bird conservation in the U.S.
L. Lynnette Dornak, Jocelyn L. Aycrigg, John R. Sauer, Courtney J. Conway
2020, PLoS ONE (15)
Setting land aside has long been a primary approach for protecting biodiversity; however, the efficacy of this approach has been questioned. We examined whether protecting lands positively influences bird species in the U.S., and thus overall biodiversity. We used the North American Breeding Bird Survey and Protected Areas Database of...
Comparative genomics and genomic epidemiology of mycobacterium avium subsp. paratuberculosis strains
Karen Stevenson, Christina Ahlstrom
2020, Book chapter, Paratuberculosis: Organism, disease, control
Two phenotypically distinct strains of Mycobacterium avium subsp. paratuberculosis (MAP) were recognized in the 1930s but it was not until the introduction of restriction endonuclease analysis (REA) in the mid-1980s that these two strains, MAP-C and MAP-S, could be distinguished genetically. Since then, a plethora of molecular typing techniques has...
Mississippi Alluvial Valley Forest-breeding landbird population & quantitative habitat objectives
Dean W. Demarest, Blaine Elliott, Robert Ford, David Hanni, S. Keith McKnight, Anne E. Mini, Daniel J. Twedt, R. Randy Wilson
2020, Report
The Mississippi Alluvial Valley (MAV) is a 9 million ha (22-million-acre) floodplain that supports a diverse and ecologically rich bottomland hardwood forest ecosystem – one of the most productive in North America. It extends from roughly Cape Girardeau, Missouri, to the Gulf of Mexico and features a mosaic of ridges,...
Using video survey to examine the effect of habitat on gag grouper encounter
G. Alvarez, D. Gandy, Brian J. Irwin, Cecil A. Jennings, Adam Fox
2020, Conference Paper
Gag is a reef fish that was declared overfished in the Gulf of Mexico (GOM) in 2009. Although Gag are no longer listed as overfished, fisheries managers are concerned that stocks may not be recovering. Our objective was to identify habitat characteristics important to Gag, and their effect on the...
Shallow basin structure and attenuation are key to predicting long shaking duration in Los Angeles Basin
Voon H Lai, Robert Graves, Chunquan Yu, Zhongwen Zhan, Don Helmberger
2020, Journal of Geophysical Research: Solid Earth (125)
Ground motions in the Los Angeles Basin during large earthquakes are modulated by earthquake ruptures, path effects into the basin, basin effects, and local site response. We analyzed the direct effect of shallow basin structures on shaking duration at a period of 2–10 s in the Los...
Assessing plot-scale impacts of land use on overland flow generation in Central Panama
Sidney A. Bush, Robert Stallard, Brian A. Ebel, Holly R. Barnard
2020, Hydrological Processes (34) 5043-5069
Land use in Panama has changed dramatically with ongoing deforestation and conversion to cropland and cattle pastures, potentially altering the soil properties that drive the hydrological processes of infiltration and overland flow. We compared plot-scale overland flow generation between hillslopes in forested and actively cattle-grazed watersheds...
Simulating wave runup on an intermediate–reflective beach using a wave-resolving and a wave-averaged version of XBeach
A.F. de beer, R.T. McCall, Joseph W. Long, M.F.S. Tissier, A.J.H.M. Reniers
2020, Coastal Engineering (167)
The prediction of wave runup, as well as its components, time-averaged setup and the time-varying swash, is a key element of coastal storm hazard assessments, as wave runup controls the transitions between morphodynamic response types such as dune erosion and overwash,...
Estimating wildfire fuel consumption with multitemporal airborne laser scanning data and demonstrating linkage with MODIS-derived fire radiative energy
T. Ryan McCarley, Andrew T. Hudak, Aaron M. Sparks, Nicole S. Vaillant, Arjan J.H. Meddens, Laura Trader, Jason R. Kreitler, Luigi Boschetti
2020, Remote Sensing of Environment (251)
Characterizing pre- and post-fire fuels remains a key challenge for estimating biomass consumption and carbon emissions from wildfires. Airborne laser scanning (ALS) data have demonstrated effectiveness for estimating canopy, and to a lesser degree, surface fuel components at fine-scale (i.e., 30 m) across landscapes. Using...
Nodal seismograph recordings of the 2019 Ridgecrest Earthquake Sequence
Rufus D. Catchings, Mark Goldman, Jamison Haase Steidl, Joanne Chan, Amir A. Allam, Coyn Criley, Zhenning Ma, Daniel S. Langermann, Garet Jax Huddleston, Andrian T. McEvilly, Daniel David Thomas Mongovin, Yehuda Ben-Zion
2020, Seismological Research Letters (91) 3622-3633
The 2019 Ridgecrest, California earthquake sequence included Mw 6.4 and Mw 7.1 earthquakes that occurred on successive days beginning on 4 July 2019. These two largest earthquakes of the sequence occurred on orthogonal faults that ruptured the Earth’s surface. To better evaluate the 3D subsurface fault structure, (P- and S-wave)...
The Everglades Depth Estimation Network (EDEN) surface-water interpolation model, version 3
Saira Haider, Eric Swain, James Beerens, Matthew D. Petkewich, Bryan McCloskey, Heather Henkel
2020, Scientific Investigations Report 2020-5083
The Everglades Depth Estimation Network (EDEN) is an integrated network of water-level gages, interpolation models that estimate daily water-level data at ungaged locations, and applications that generate derived hydrologic data across the freshwater part of the Greater Everglades landscape. Version 3 (V3) of the EDEN interpolation surface-water model is the most...
Shifting food web structure during dam removal—Disturbance and recovery during a major restoration action
Sarah A. Morley, Melissa M Foley, Jeffrey J. Duda, Mathew M Beirne, Rebecca L Paradis, Rachelle Carina Johnson, Michael L. McHenry, Mel Elofson, Earnest M Sampson, Randall E McCoy, Justin Stapleton, George R. Pess
2020, PLoS ONE (15)
We measured food availability and diet composition of juvenile salmonids over multiple years and seasons before and during the world’s largest dam removal on the Elwha River, Washington State. We conducted these measurements over three sediment-impacted sections (the estuary and two sections of the river downstream of each dam) and...
The distribution of woody species in relation to climate and fire in Yosemite National Park, California, USA
Jan W. van Wagtendonk, Peggy E Moore, Julie L. Yee, James A. Lutz
2020, Fire Ecology (16)
BackgroundThe effects of climate on plant species ranges are well appreciated, but the effects of other processes, such as fire, on plant species distribution are less well understood. We used a dataset of 561 plots 0.1 ha in size located throughout Yosemite National Park, in the Sierra Nevada...
Differences in rhizosphere microbial communities between native and non‐native Phragmites australis may depend on stand density
Wesley A. Bickford, Donald R. Zak, Kurt P. Kowalski, Deborah E. Goldberg
2020, Ecology and Evolution (10) 11739-11751
Microorganisms surrounding plant roots may benefit invasive species through enhanced mutualism or decreased antagonism, when compared to surrounding native species. We surveyed the rhizosphere soil microbiome of a prominent invasive plant, Phragmites australis, and its co‐occurring native subspecies for evidence of microbial drivers of invasiveness. If the...
Climate, sea level, and people - Changing South Florida's mangrove coast
G. Lynn Wingard
2020, Book chapter
South Florida’s coast is a land of contrasts that appeals to almost everyone, whether they seek out quiet natural environments along the mangrove waterways and in the wilderness of the Everglades or vibrant international culture in Miami. Yet this paradise is threatened by a number of forces – changing climate, rising...
Timescale methods for simplifying, understanding and modeling biophysical and water quality processes in coastal aquatic ecosystems: A review
Lisa Lucas, Eric Deleersnijder
2020, Water (12)
In this article, we describe the use of diagnostic timescales as simple tools for illuminating how aquatic ecosystems work, with a focus on coastal systems such as estuaries, lagoons, tidal rivers, reefs, deltas, gulfs, and continental shelves. Intending this as a tutorial as well as a review, we discuss relevant...
