Cyanotoxin mixture models: Relating environmental variables and toxin co-occurrence to human exposure risk
Victoria Christensen, Erin A. Stelzer, Barbara C. Scudder Eikenberry, Hayley T. Olds, Jaime F. LeDuc, Ryan P. Maki, Jack E. Norland, Eakalak Khan
2021, Journal of Hazardous Materials (415)
Toxic cyanobacterial blooms, often containing multiple toxins, are a serious public health issue. However, there are no known models that predict a cyanotoxin mixture (anatoxin-a, microcystin, saxitoxin). This paper presents two cyanotoxin mixture models (MIX) and compares them to two microcystin (MC) models from data collected in 2016–2017 from three...
Simulation of dissolved organic carbon flux in the Penobscot Watershed, Maine
Shabnam Rouhani, Crystal B. Schaaf, Thomas G. Huntington, Janet Choate
2021, Ecohydrology & Hydrobiology (21) 256-270
Dissolved organic carbon (DOC) is an important component of the carbon cycle as a measure of the hydrological transport of carbon between terrestrial carbon pools into soil pools and eventually into streams. As a result, changes in DOC in rivers and streams may indicate alterations in the storage of terrestrial...
The making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18)
Roberto Basili, Beatriz Brizuela, Andre Herrero, Sarfraz Iqbal, Stefano Lorito, Francesco Emanuele Maesano, Shane Murphy, Paolo Perfetti, Fabrizio Romano, Antonio Scala, Jacopo Selva, Matteo Taroni, Mara Monica Tiberti, Hong Kie Thio, R. Tonini, Manuela Volpe, Sylfest Glimsdal, Carl B. Harbitz, Finn Lovholt, Maria Ana Baptista, Fernando Carrilho, Luis M. A. Matias, Rachid Omira, Andrey Babeyko, Andreas Hoechner, Mucahit Gurbuz, Onur Pekcan, A. Yalciner, Miquel Canals, Galderic Lastras, Apostolos Agalos, Gerassimo Papadapoulos, Ioanna Triantafyllou, Sabah Benchekroun, Hedi Agrebi Jaouadi, Samir Ben Abdallah, Atef Bouallegue, Hassene Hamdi, Foued Oueslati, A. Amato, Alberto Armigliato, Jorn Behrens, Gareth Davies, Daniela Di Bucci, Mauro Dolce, Eric L. Geist, Jose Manuel Gonzalez Vida, Mauricio Gonzalez, Jorges Macias Sanchez, C. Meletti, Ceren Ozer Sozdinler, Marco Pagani, Tom Parsons, Jascha Polet, William Power, Mathilde B. Sorensen, Andrey Zaytsev
2021, Frontiers in Earth Science (8)
The NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of the North-eastern Atlantic, the Mediterranean, and connected seas (NEAM). NEAMTHM18 was designed as a three-phase project. The first two phases were dedicated to the model development...
The role of surges during periods of very shallow water on sediment transport over tidal flats
Qian Zhang, Zheng Gong, Changkuan Zhang, Jessica R. Lacy, Bruce E. Jaffe, Beibei Xu, Xindi Chen
2021, Frontiers in Marine Science (8)
Periods of very shallow water (water depth in the order of 10 cm) occur daily on tidal flats because of the propagation of tides over very gently sloping beds, leading to distinct morphodynamical phenomena. To improve the understanding of the characteristics of velocity and suspended sediment concentration (SSC)...
Isolating the AFFF signature in coastal watersheds using oxidizable PFAS precursors and unexplained organofluorine
Bridger J. Ruyle, Heidi M. Pickard, Denis R. LeBlanc, Andrea K. Tokranov, Colin P. Thackray, Xindi C. Hu, Chad D. Vecitis, Elsie M. Sunderland
2021, Environmental Science & Technology (55) 3686-3695
Water supplies for millions of U.S. individuals exceed maximum contaminant levels for per- and polyfluoroalkyl substances (PFAS). Contemporary and legacy use of aqueous film forming foams (AFFF) is a major contamination source. However, diverse PFAS sources are present within watersheds, making...
Incorporating the effects of complex soil layering and thickness local variability into distributed landslide susceptibility assessments
F. Fusco, Benjamin B. Mirus, Rex L. Baum, D. Calcaterra, P. De Vita
2021, Water (13)
Incorporating the influence of soil layering and local variability into the parameterizations of physics-based numerical models for distributed landslide susceptibility assessments remains a challenge. Typical applications employ substantial simplifications including homogeneous soil units and soil-hydraulic properties assigned based only on average textural classifications; the potential impact of these assumptions is...
Estimated total phosphorus loads for selected sites on Great Lakes tributaries, water years 2014–2018
G. F. Koltun
2021, Open-File Report 2020-1145
Monthly and annual total phosphorus loads were estimated for water years 2014 through 2018 for 23 streamgaged (gaged) sites on tributaries to the Great Lakes. Processing and regression methods described by Robertson and others (2018) were used with discrete and continuous data collected during water years 2011 and 2018 to...
Distribution
Andrew M. Muir, David Bennion, Michael J Hansen, Stephen Riley, John Gunn
2021, Book chapter, The lake charr Salvelinus namaycush: Biology, ecology, distribution, and management
The lake charr Salvelinus namaycush is restricted in its native distribution to oligotrophic fresh waters of northern North America largely within the extent of the Pleistocene glaciations. It is the only freshwater species in northwest North America that does not occur in Siberia. A GIS-based native occurrence map linked to...
Developing species-age cohorts from forest inventory and analysis data to parameterize a forest landscape model
Richard H. Odom, W. Mark Ford
2021, International Journal of Forestry Research (2021)
Simulating long-term, landscape level changes in forest composition requires estimates of stand age to initialize succession models. Detailed stand ages are rarely available, and even general information on stand history often is lacking. We used data from USDA Forest Service Forest Inventory and Analysis (FIA) database to estimate broad age...
Practical field survey operations for flood insurance rate maps
Nicholas J. Taylor, Caelan E. Simeone
2021, Open-File Report 2020-1146
The U.S. Geological Survey assists the Federal Emergency Management Agency in its mission to identify flood hazards and zones for risk premiums for communities nationwide, by creating flood insurance rate maps through updating hydraulic models that use river geometry data. The data collected consist of elevations of river channels, banks,...
Continental-scale analysis of shallow and deep groundwater contributions to streams
D. Hare, A. M. Helton, Zachary C. Johnson, John W. Lane Jr., Martin A. Briggs
2021, Nature Communications (12)
Groundwater discharge generates streamflow and influences stream thermal regimes. However, the water quality and thermal buffering capacity of groundwater depends on the aquifer source-depth. Here, we pair multi-year air and stream temperature signals to categorize 1729 sites across the continental United States as having major dam...
Characterization of groundwater recharge and flow in California's San Joaquin Valley from InSAR-observed surface deformation
W.R. Neely, A.A. Borsa, J.A. Burney, M.C. Levy, F. Silverii, Michelle Sneed
2021, Water Resources Research (57)
Surface deformation in California's Central Valley (CV) has long been linked to changes in groundwater storage. Recent advances in remote sensing have enabled the mapping of CV deformation and associated changes in groundwater resources at increasingly higher spatiotemporal resolution. Here, we use interferometric synthetic aperture radar...
Greenhouse gas emissions from an arid-zone reservoir and their environmental policy significance: Results from existing global models and an exploratory dataset
Sarah Waldo, Bridget R. Deemer, Lucas S. Bair, Jake J. Beaulieu
2021, Environmental Science and Policy (120) 53-62
Reservoirs in arid regions often provide critical water storage but little is known about their greenhouse gas (GHG) footprint. While there is growing appreciation of the role reservoirs play as GHG sources, there is a lack of understanding of GHG emission dynamics from reservoirs in...
The tide turns: Episodic and localized cross-contamination of a California coastline with cyanotoxins
Avery O. Tatters, Jayme Smith, Raphael M. Kudela, Kendra Hayashi, Meredith D. A. Howard, Ariel Donovan, Keith A. Loftin, David A. Caron
2021, Harmful Algae (103)
The contamination of coastal ecosystems from a variety of toxins of marine algal origin is a common and well-documented situation along the coasts of the United States and globally. The occurrence of toxins originating from cyanobacteria along marine coastlines is much less...
Global political responsibility for the conservation of albatrosses and large petrels
Martin Beal, Maria P. Dias, Richard A. Phillips, Steffen Oppel, Carolina Hazin, Elizabeth J. Pearmin, Josh Adams, David J Anderson, Michelle Antolos, Javier A Arata, Jose Manuel Arcos, John P. Y. Arnould, Jill Awkerman, Elizabeth Bell, Mike Bell, Mark Carey, Ryan Carle, Thomas A Clay, Jaimie Cleeland, Valentina Colodro, Melinda G. Conners, Marta Cruz-Flores, Richard Cuthbert, Karine Delord, Lorna Deppe, Ben J Dilley, Herculano A. Dinis, Graeme Elliot, Fernanda de Felipe, Jonathan J. Felis, Manuela G. Forero, Amanda Freeman, Akira Fukuda, Jacob Gonzalez-Solis, Jose Pedro Granadeiro, April Hedd, Peter Hodum, Jose Manuel Igual, Audrey Jaeger, Todd J Landers, Le Corre Matthieu, Azwianewi Makhado, Benjamin Metzger, Teresa Militao, William A Montevecchi, Virginia Morera-Pujol, Leia Navarro-Herrero, Deon Nel, David Nicholls, Daniel Oro, Ridha Ouni, Kiyoaki Ozaki, Flavio Quintana, Raul Ramos, Tim Reid, Jose Manuel Reyes-Gonzalez, Christopher Robertson, Graham Robertson, Mohamed Salah Romdhane, Peter G. Ryan, Paul Sagar, Fumio Sato, Stefan Schoombie, R. Paul Scofield, Scott A. Shaffer, Nirmal Jivan Shah, Kim L Stevens, Christopher Surman, Robert M. Suryan, Akinori Takahashi, Vikash Tatayah, Graeme Taylor, David R. Thompson, Leigh Torres, Kath Walker, Ross M. Wanless, Susan M. Waugh, Henri Weimerskirch, Takashi Yamamoto, Zuzana Zajkova, Laura Zango, Paulo Catry
2021, Science Advances (7)
Migratory marine species cross political borders and enter the high seas, where the lack of an effective global management framework for biodiversity leaves them vulnerable to threats. Here, we combine 10,108 tracks from 5775 individual birds at 87 sites with data on breeding population sizes to estimate the relative year-round...
Groundwater management process simulations using an updated version of the three-dimensional numerical model of groundwater flow in northern Utah Valley, Utah County, Utah
Bernard J. Stolp, Lynette E. Brooks
2021, Scientific Investigations Report 2021-5010
Groundwater is a primary source of drinking water in northern Utah County. The groundwater system is recharged mainly from precipitation in the adjacent Wasatch Mountains and infiltration of streamflow. In 2004, groundwater withdrawals were estimated to be roughly 44,500 acre-feet per year. In 2016, groundwater withdrawals were estimated to be...
An increase in the slope of the concentration-discharge relation for total organic carbon in major rivers in New England, 1973 to 2019
Thomas G. Huntington, Michael Wieczorek
2021, Science of the Total Environment (778)
The mobilization and transport of organic carbon (OC) in rivers and delivery to the near-coastal ocean are important processes in the carbon cycle that are affected by both climate and anthropogenic activities. Riverine OC transport can affect carbon sequestration,...
Chapter A6.4. Measurement of pH
U. S. Geological Survey
2021, Techniques and Methods 9-A6.4
The “National Field Manual for the Collection of Water-Quality Data” (NFM) provides guidelines and procedures for U.S. Geological Survey (USGS) personnel who collect data used to assess the quality of the Nation’s surface-water and groundwater resources. This chapter, NFM A6.4, provides guidance and protocols for the measurement of pH of...
Procedures for field data collection, processing, quality assurance and quality control, and archiving of relative- and absolute-gravity surveys
Jeffrey R. Kennedy, Donald R. Pool, Robert L. Carruth
2021, Techniques and Methods 2-D4
Repeat microgravity surveys carried out using relative- and absolute-gravity meters are useful for identifying changes in subsurface mass, such as the volume of water stored in an aquifer. These surveys require careful field procedures to achieve the part-per-billion accuracy required to measure the small changes in gravity relevant for hydrologic...
Exploring biophysical linkages between coastal forestry management practices and aquatic bivalve contaminant exposure
Kaegan Scully-Engelmeyer, Elise F. Granek, Max Nielsen-Pincus, Andy Lanier, Steven S Rumrill, Patrick W. Moran, Elena Nilsen, Michelle L. Hladik, Lori Pillsbury
2021, Toxics (9)
Terrestrial land use activities present cross-ecosystem threats to riverine and marine species and processes. Specifically, pesticide runoff can disrupt hormonal, reproductive, and developmental processes in aquatic organisms, yet non-point source pollution is difficult to trace and quantify. In Oregon, U.S.A., state and federal forestry pesticide regulations, designed...
Surface-air mercury fluxes and a watershed mass balance in forested and harvested catchments
Chris S. Eckley, Collin A. Eagles-Smith, Michael T. Tate, David P. Krabbenhoft
2021, Environmental Pollution (277)
Forest soils are among the world’s largest repositories for long-term accumulation of atmospherically deposited mercury (Hg), and understanding the potential for remobilization through gaseous emissions, aqueous dissolution and runoff, or erosive particulate transport to down-gradient aquatic ecosystems is critically important for projecting ecosystem recovery. Forestry operations, especially clear-cut logging where most of...
Review of the invasive Asian clam Corbicula spp. (Bivalvia: Cyrenidae) distribution in North America, 1924–2019
Amy J. Benson, James D. Williams
2021, Scientific Investigations Report 2021-5001
The bivalve Corbicula is one of the most successful aquatic mollusk invaders in the world. Since being introduced to North America from its native range in Asia, it has dispersed widely over a large portion of the continent from southern Canada to Panama. The first evidence of its introduction in...
Aerial strip-transect surveys: Indexing autumn–winter waterbird abundance and distribution in South Carolina
Beth Ross, G.L. Wilkerson, M.R. Kneece, N.M. Masto, P.D. Gerard, R.M. Kaminski
2021, Journal of the Southeastern Association of Fish and Wildlife Agencies (8) 89-100
Aerial surveys integrating probability-based sample designs have been implemented successfully to estimate relative abundance of wintering ducks in Arkansas, Louisiana, Mississippi, and Missouri, but these approaches have not been evaluated in the Atlantic Flyway except for American black ducks (Anas rubripes) along the Atlantic coast. Furthermore, these surveys have not...
Compilation of information on occurrence and conservation status for the freshwater mussel fauna of Nebraska, Kansas, and Oklahoma
Natasha B. Carr, Tammy S. Fancher
2021, Data Series 1133
The purpose of this data series is to compile information on the occurrence and conservation status of the freshwater mussel fauna of Nebraska, Kansas, and Oklahoma and to map the distribution of a freshwater mussel assemblage for the U.S. Department of the Interior, Bureau of Land Management Rapid Ecoregional Assessment...
Cloud water interception in Hawai‘i: Developing capacity to characterize the spatial patterns and effects on water and ecological processes responses in Hawai‘i
Han Tseng, Lucas Berio Fortini, Alan Mair, Aurora Kagawa-Viviani, Stephanie G. Yelenik, Yoshiyuki Miyazawa, Michael A Nullet, Joseph Kennedy, John DeLay, Christina Leopold, Thomas Giambelluca
2021, Report, Pacific Island Climate Adaptation Science Center Final Technical Report
Cloud-water interception (CWI) is the process by which fog or cloud water droplets are captured and accumulate on the leaves and branches of plants, some of which drips to the ground. Prior studies in Hawai'i indicate that CWI is highly variable and can contribute substantially to total precipitation. In this...
