Comparison of underwater video with electrofishing and dive‐counts for stream fish abundance estimation
Nathaniel P. Hitt, Karli M. Rogers, Craig D. Snyder, C. Andrew Dolloff
2020, Transactions of the American Fisheries Society (150) 24-37
Advances in video technology enable new strategies for stream fish research. We compared juvenile (age‐0) and adult (age 1+) Brook Trout Salvelinus fontinalis abundance estimates from underwater video with backpack electrofishing and dive‐count methods across a series of stream pools...
Quantifying drought’s influence on moist soil seed vegetation in California’s Central Valley through time-series remote sensing
Kristin B. Byrd, Austen Lorenz, James Anderson, Cynthia Wallace, Kara Moore-O'Leary, Jennifer Isola, Ricardo Ortega, Matt Reiter
2020, Ecological Applications (30)
Californias Central Valley, USA is a critical component of the Pacific Flyway despite loss of more than 90% of its wetlands. Moist soil seed (MSS) wetland plants are now produced by mimicking seasonal flooding in managed wetlands to provide an essential food resource for waterfowl. Managers need MSS plant area...
User guide to the bayesian modeling of non-stationary, univariate, spatial data using R language package BMNUS
Karl J. Ellefsen, Margaret A. Goldman, Bradley S. Van Gosen
2020, Techniques and Methods 7-C20
Bayesian modeling of non-stationary, univariate, spatial data is performed using the R-language package BMNUS. A unique advantage of this package is that it can map the mean, standard deviation, quantiles, and probability of exceeding a specified value. The package includes several R-language classes that prepare the data for the modeling,...
Bayesian modeling of non-stationary, univariate, spatial data for the Earth sciences
Karl J. Ellefsen, Bradley S. Van Gosen
2020, Techniques and Methods 7-C24
Some Earth science data, such as geochemical measurements of element concentrations, are non-stationary—the mean and the standard deviation vary spatially. It is important to estimate the spatial variations in both statistics because such information is indicative of geological and other Earth processes. To this end, an estimation method is formulated...
Continuous water-quality and suspended-sediment transport monitoring in the San Francisco Bay, California, water years 2016–17
Darin C. Einhell, Maureen A. Downing-Kunz, Daniel N. Livsey
2020, Fact Sheet 2020-3023
The U.S. Geological Survey (USGS) monitors water quality and suspended-sediment transport in the San Francisco Bay (Bay) as part of a multi-agency effort to address estuary management, water supply, and ecological concerns. The San Francisco Bay area is home to millions of people, and the Bay teems with plants and...
Geologic map of the southern flank of Mauna Loa Volcano, Island of Hawai‘i, Hawaii
Frank A. Trusdell, John P. Lockwood
2020, Scientific Investigations Map 2932-C
On the Island of Hawaiʻi, Mauna Loa, the largest volcano on Earth, has erupted 33 times since written descriptions became available in 1832. Some eruptions began with only brief seismic unrest, whereas others followed several months to a year of increased seismicity. Once underway, its eruptions can produce lava flows...
Stormwater control impacts on runoff volume and peak flow: A meta-analysis of watershed modelling studies
Colin D. Bell, Jordyn M. Wolfand, Chelsea L. Panos, Aditi S. Bhaskar, Ryan L. Gilliom, Terri S. Hogue, Kristina G. Hopkins, Anne J. Jefferson
2020, Hydrological Processes (34) 3134-3152
Decades of research has concluded that the percent of impervious surface cover in a watershed is strongly linked to negative impacts on urban stream health. Recently, there has been a push by municipalities to offset these effects by installing structural stormwater control measures (SCMs), which are landscape features designed to...
InFRM Flood Decision Support Toolbox user guide
Interagency Flood Risk Management (InFRM)
2020, Report
Digital geospatial flood inundation mapping can be a powerful tool for flood risk management. Flood preparedness, communication, warning, response and mitigation can be enhanced by flood inundation mapping that shows floodwater extent and depth over the land surface. Flood inundation maps that accurately reflect observed and forecasted hydrodynamic...
Fostering real-time climate adaptation: Analyzing past, current, and forecast temperature to understand the dynamic risk to Hawaiian honeycreepers from avian malaria
Lucas B. Fortini, Lauren R. Kaiser, Dennis Lapointe
2020, Global Ecology and Conservation (23)
Various vector control options are increasingly being considered to safeguard forest birds in their natural habitats from avian malaria transmission. However, vector control options require localized deployment that is not logistically, ethically, ecologically, nor economically viable everywhere and all the time. Based on thermal tolerances of the sporogonic stages of...
Polymeric nanofiber-carbon nanotube composite mats as fast-equilibrium passive samplers for polar organic pollutants
Jiajie Qian, Andres Martinez, Rachel F Marek, Matthew R. Nagorzanski, Hui Zhi, Edward Furlong, Dana W. Kolpin, Gregory H. LeFevre, David M. Cwiertny
2020, Environmental Science & Technology (54) 6703-6712
To improve the performance of polymeric electrospun nanofiber mats (ENMs) for equilibrium passive sampling applications in water, we integrated two types of multiwalled carbon nanotubes (CNTs; with and without surface carboxyl groups) into polyacrylonitrile (PAN) and polystyrene (PS) ENMs. For 11 polar and moderately hydrophobic compounds (−0.07 ≤ logKOW ≤ 3.13),...
Economic, land use, and ecosystem services impacts of Rwanda's Green Growth Strategy: An application of the IEEM+ESM platform
Onil Banerjee, Kenneth J. Bagstad, Martin Cicowiecz, Sebastian Dudek, Mark Horridge, Janaki Alavalapati, Michel K. Masozera, Emmanuel Rukundo, Evariste Rutebuka
2020, Science of the Total Environment (729)
We develop and link the Integrated Economic-Environmental Modeling (IEEM) Platform to ecosystem services modeling (ESM). The IEEM+ESM Platform is an innovative decision-making framework for exploring complex public policy goals and elucidating synergies and trade-offs between alternative policy portfolios. The IEEM+ESM approach is powerful in its ability to shed light on...
Longitudinal, lateral, vertical, and temporal thermal heterogeneity in a large impounded river: Implications for cold-water refuges
Francine H. Mejia, Christian E. Torgersen, Eric K Berntsen, Joseph R Maroney, J M Connor, Aimee H. Fullerton, Joseph L. Ebersole, Mark L Lorang
2020, Remote Sensing (12)
Dam operations can affect mixing of the water column, thereby influencing thermal heterogeneity spatially and temporally. This occurs by restricting or eliminating connectivity in longitudinal, lateral, vertical, and temporal dimensions. We examined thermal heterogeneity across space and time and identified potential cold-water refuges for salmonids in a large impounded river...
Time-dependent accumulation of Cd, Co, Cu, Ni, and Zn in mayfly and caddisfly larvae in experimental streams: Metal sensitivity, uptake pathways, and mixture toxicity
Laurie S. Balistrieri, Christopher A. Mebane, Travis S. Schmidt
2020, Science of the Total Environment (732)
Conceptual and quantitative models were developed to assess time-dependent processes in four sequential experimental stream studies that determined abundances of natural communities of mayfly and caddisfly larvae dosed with single metals (Cd, Co, Cu, Ni, Zn) or multiple metals (Cd+Zn, Co+Cu, Cu+Ni, Cu+Zn, Ni+Zn, Cd+Cu+Zn, Co+Cu+Ni, Cu+Ni+Zn). Metal mixtures...
Trophodynamics of per- and polyfluoroalkyl substances in the food web of a large Atlantic slope river
T. N. Penland, W. G. Cope, Thomas J. Kwak, M.J. Strynar, C. A. Grieshaber, R. J. Heise, F.W. Sessions
2020, Environmental Science and Technology (54) 6800-6811
Per- and polyfluoroalkyl substances (PFASs) have attracted scientific and regulatory attention due to their persistence, bioaccumulative potential, toxicity, and global distribution. We determined the accumulation and trophic transfer of 14 PFASs (5 short-chain and 9 long-chain) within the food web of...
Discovery of a reproducing wild population of the swamp eel Amphipnous cuchia (Hamilton, 1822) in North America
Frank Jordan, Leo Nico, Krystal Huggins, Peter J. Martinat, Dahlia A. Martinez, Victoria L. Rodrigues
2020, BioInvasions Records (9) 367-374
We report discovery of an established population of the Asian swamp eel Amphipnous cuchia (Hamilton, 1822) in Bayou St. John, an urban waterway in New Orleans, Louisiana, USA. This fish, commonly referred to as cuchia (kuchia), is a member of the family Synbranchidae and is native to southern and southeastern Asia. Recently-used...
Magnitude and frequency of floods in Alabama, 2015
Brandon T. Anderson
2020, Scientific Investigations Report 2020-5032
To improve flood-frequency estimates at rural streams in Alabama, annual exceedance probability flows at gaged locations and regional regression equations used to estimate annual exceedance probability flows at ungaged locations were developed by using current geospatial data, new analytical methods, and annual peak-flow data through September 2015 at 242 streamgages...
Disturbances drive changes in coral community assemblages and coral calcification capacity
Travis A. Courtney, Brian B. Barnes, Iliana Chollett, Robin Elahi, Kevin Gross, James R. Guest, Ilsa B. Kuffner, Elizabeth A. Lenz, Hanna R Nelson, Caroline Rogers, Lauren Toth, Andreas J Andersson
2020, Ecosphere (11)
Anthropogenic environmental change has increased coral reef disturbance regimes in recent decades, altering the structure and function of many coral reefs globally. In this study, we used coral community survey data collected from 1996 to 2015 to evaluate coral calcification capacity (CCC) dynamics with respect to recorded pulse disturbances for...
The importance of U.S. Geological Survey water-quality super gages
Angela S. Crain
2020, Fact Sheet 2020-3019
Super gages are an important tool providing real-time, continuous water-quality data at streamgages or groundwater wells. They are designed to address specific water-resource threats such as water-related human health issues including harmful algal blooms, floods, droughts, and hazardous substance spills. In addition, super gages improve our understanding of the effects...
Report of the River Master of the Delaware River for the period December 1, 2010–November 30, 2011
Vincent J. DiFrenna, William J. Andrews, Kendra L. Russell, J. Michael Norris, Robert R. Mason, Jr.
2020, Open-File Report 2020-1020
A Decree of the Supreme Court of the United States, entered June 7, 1954, established the position of Delaware River Master within the U.S. Geological Survey. In addition, the Decree authorizes diversion of water from the Delaware River Basin and requires compensating releases from certain reservoirs, owned by New York...
Robust ecological drought projections for drylands in the 21st century
John B. Bradford, Daniel Rodolphe Schlaepfer, William K. Lauenroth, Kyle A. Palmquist
2020, Global Change Biology (26) 3906-3919
(Bradford) Dryland ecosystems may be especially vulnerable to expected 21st century increases in temperatures and aridity because they are tightly controlled by patterns of moisture availability. However, climate impact assessments in drylands are difficult because ecological dynamics are dictated by drought conditions that are difficult to define and complex to...
A novel quantitative framework for riverscape genetics
Shannon L. White, Ephraim M. Hanks, Tyler Wagner
2020, Ecological Applications (30)
Riverscape genetics, which applies concepts in landscape genetics to riverine ecosystems, lack appropriate quantitative methods that address the spatial autocorrelation structure of linear stream networks and account for bidirectional geneflow. To address these challenges, we present a general framework for the design and analysis of riverscape...
High spatial fidelity among foraging trips of Masked Boobies from Pedro Cays, Jamaica
Bradley P. Wilkinson, Ann M. Haynes-Sutton, Llewelyn Meggs, Patrick G.R. Jodice
William David Halliday, editor(s)
2020, PLoS ONE (15) 1-12
In marine environments, tropical and subtropical habitats are considered to be inherently less productive than more temperate systems. As such, foraging site fidelity among vertebrate predators occupying low-latitude marine systems is generally low as a response to an increased unpredictability of resources. We investigated the foraging movements of Masked Boobies...
Unexpected hybridization reveals the utility of genetics in native plant restoration
Daniel E. Winkler, Robert Massatti
2020, Restoration Ecology (28) 1047-1052
Native plant materials (NPMs) are increasingly utilized during the restoration of disturbed plant communities. Here, we analyze next‐generation genetic sequencing data for Hilaria jamesii, a dominant graminoid across drylands of the southwestern United States, and document that the species' only commercially‐available NPM, ‘Viva’, is a hybrid between H. jamesii and its sister species, H....
Post-1978 tumescence at Long Valley Caldera, California: A geophysical perspective
David P. Hill, Emily K. Montgomery-Brown, David R. Shelly, Ashton F. Flinders, Stephanie Prejean
2020, Journal of Volcanology and Geothermal Research (400)
Long Valley Caldera has been restless since at least 1978. Prominent symptoms of this unrest include earthquake swarms and tumescence (inflation) centered on the resurgent dome. Over the years, interpretations of physical processes underlying this unrest have varied considerably. Results from...
Book review: Proceedings of the First International Snakehead Symposium
Stephen Walsh
2020, Transactions of the American Fisheries Society (149) 364-365
Snakehead fishes (family Channidae) are among the most maligned aquatic invasive species in the USA and some other countries where they have been introduced outside of their native range in Asia and Africa. Nevertheless, snakeheads continue to be widely exploited in the live‐food trade in aquaculture and wild‐capture fisheries, are...
