A space-time geostatistical model for probabilistic estimation of harmful algal bloom biomass and areal extent
Shiqi Fang, Dario Del Giudice, Donald Scavia, Caren E. Binding, Thomas B. Bridgeman, Justin D. Chaffin, Mary Anne Evans, Joseph Guinness, Thomas H. Johengen, Daniel R Obenour
2019, Science of the Total Environment (695)
Harmful algal blooms (HABs) have been increasing in intensity across many waterbodies worldwide, including the western basin of Lake Erie. Substantial efforts have been made to track these blooms using in situ sampling and remote sensing. However, such measurements do not fully capture HAB spatial and temporal dynamics due to...
Shifting diets of Lake Trout in northeastern Lake Michigan
Miles K. Luo, Charles P. Madenjian, James S. Diana, Matthew S. Kornis, Charles R. Bronte
2019, North American Journal of Fisheries Management (39) 793-806
Prey fish communities in Lake Michigan have been steadily changing, characterized by declines in both the quantity and quality of Alewife Alosa pseudoharengus. To evaluate concurrent changes in the diet of Lake Trout Salvelinus namaycush in northeastern Lake Michigan, we analyzed stomach contents of Lake Trout caught during gill‐net surveys and fishing tournaments...
Offshore shallow structure and sediment distribution, Punta Gorda to Point Arena, Northern California
Jeffrey W. Beeson, Samuel Y. Johnson
2019, Open-File Report 2019-1072
This publication consists of two map sheets that display shallow geologic structure, along with sediment distribution and thickness, for an approximately 150-km-long offshore section of the northern California coast between Punta Gorda and Point Arena. Each map sheet includes three maps at scales of either 1:100,000 or 1:200,000, and together...
Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2017
Patrick J. Ryan
2019, Open-File Report 2019-1078
The U.S. Army Corps of Engineers, Jacksonville District, plans to deepen the St. Johns River channel in Jacksonville, Florida, from 40 to 47 feet along 13 miles of the river channel, beginning at the mouth of the river at the Atlantic Ocean, to accommodate larger, fully loaded cargo vessels. The...
Characterization of the rhyolite of Bodie Hills and 40Ar/39Ar intercalibration with Ar mineral standards
Robert J. Fleck, Andrew T. Calvert, Matthew Coble, Joseph L. Wooden, Kip V. Hodges, Leslie A. Hayden, Matthijs C. van Soest, Edward A. du Bray, David A. John
2019, Chemical Geology (525) 282-302
The rhyolite of Bodie Hills (California) is characterized compositionally and the geochronology of selected phases is studied. Sanidine (BHs) from the rhyolite is well suited as a 40Ar/39Ar reference material with high K/Ca and radiogenic yield. Intercalibration with GA1550 biotite from the Dromedary igneous complex (New South Wales, Australia) yields an age of 9.7946 ± 0.0031 Ma for BHs relative to an age of...
The U.S. Geological Survey Southwest Biological Science Center—Sound science to serve the American Southwest
Southwest Biological Science Center Staff
2019, Fact Sheet 2019-3041
Home to Arches, Grand Canyon, and Saguaro National Parks, among others, the American Southwest’s landscapes are as fragile as they are iconic. Energy development, water security, and grassland restoration are important to the region as it experiences population growth and increased demand for resources. The U.S. Geological Survey’s Southwest Biological...
Molecular identification of fecal contamination in the Elks Run Watershed, Jefferson County, West Virginia, 2016–17
W. Bane Schill, Deborah D. Iwanowicz
2019, Open-File Report 2019-1064
The U.S. Geological Survey conducted a study using modern methods of molecular analysis aimed at attempting to identify the source(s) of fecal contamination that had been identified in previous studies conducted by the West Virginia Conservation Agency in the Elk Run watershed, Jefferson County, West Virginia. Water samples from multiple...
Polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and metals in ambient sediment at mussel biomonitoring sites, Puget Sound, Washington
Renee K. Takesue, Pamela L. Campbell‐Swarzenski, Kathleen E. Conn
2019, Open-File Report 2019-1087
Caged mussels used as biomonitors can provide insights about ambient contaminant assemblages and spatial patterns, sources of contaminants, and contaminant exposure risks for consumers of wild and farmed mussels. This study explored the potential role of ambient sediment in the uptake of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and...
Optimum electrofishing waveforms and parameters to induce a capture-prone response in juvenile Grass Carp
Andrew S Briggs, Jan C. Dean, James C. Boase, Patrick Kocovsky, James A. Luoma
2019, North American Journal of Fisheries Management (39) 705-713
Grass Carp (Ctenopharyngodon idella) are a non-native species to North America that were first introduced for vegetation control in the 1960s. However, wild-reproducing Grass Carp can negatively impact aquatic habitats and aquatic communities by consuming substantial amounts of aquatic vegetation and increasing turbidity. Numerous fisheries techniques have been...
Spatial distribution of water level impact to back-barrier bays
Alfredo Aretxabaleta, Neil K. Ganju, Zafer Defne, Richard P. Signell
2019, Natural Hazards and Earth System Sciences (19) 1823-1838
Water level in semi-enclosed bays, landward of barrier islands, is mainly driven by offshore sea level fluctuations that are modulated by bay geometry and bathymetry, causing spatial variability in the ensuing response (transfer). Local wind setup can have a secondary role that depends on wind speed, fetch, and relative orientation...
Monitoring of endangered Klamath Basin suckers translocated from Lake Ewauna to Upper Klamath Lake, Oregon, 2014−2017
Nathan V. Banet, David A. Hewitt
2019, Open-File Report 2019-1085
Data from a 4-year capture and transport program were used to assess translocation as a management strategy for two long-lived, federally endangered catostomids in the Upper Klamath Basin, Oregon. Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers, two species endemic to the Klamath Basin, were translocated from Lake...
Airborne radiometric maps of Mountain Pass, California
David A. Ponce, Kevin M. Denton
David A. Ponce, editor(s)
2019, Scientific Investigations Map 3412-C
Geophysical investigations of Mountain Pass and vicinity were begun as part of an effort to study regional crustal structures as an aid to understanding the geologic framework and mineral resources of the eastern Mojave Desert. The study area encompasses Mountain Pass, host to one of the world’s largest rare earth...
Potential shifts in zooplankton community structure in response to changing ice regimes and hydrologic connectivity
John R. Beaver, Christopher D. Arp, Claudia E. Tausz, Benjamin M. Jones, Matthew S. Whitman, Thomas R. Renicker, Erin E Samples, David M Ordosch, Kyle C. Scotese
2019, Arctic, Antarctic, and Alpine Research (51) 327-345
Changing Arctic climate may alter freshwater ecosystems as a result of warmer surface waters, longer open-water periods, reduced wintertime lake ice growth, and altered hydrologic connectivity. This study aims to characterize zooplankton community composition and size structure in the context of hydrologic connectivity and ice regimes in Arctic lakes. Between...
The effects of seasonal temperature and photoperiod manipulation on reproduction in the eastern elliptio Elliptio complanata
Carrie J. Blakeslee, William A. Lellis
2019, Journal of Shellfish Research (38) 379-384
The eastern elliptio Elliptio complanata is a species of freshwater mussel common to streams and rivers of the Atlantic Coast. Egg fertilization, larval brooding, and glochidial release are reported to occur within a period of several weeks during early to midsummer. In this study, mussels were exposed to manipulated photoperiod and water...
New insights into the ecology of adfluvial Bull Trout and the population response to the Endangered Species Act in the North Fork Lewis River, Washington
Robert K. Al-Chokhachy, Jeremiah Doyle, James Lampierth
2019, Transactions of the American Fisheries Society (148) 1102-1116
Like many other salmonids, Bull Trout Salvelinus confluentus migratory life-history expressions are becoming increasingly rare. A critical step in effectively refining management and conservation strategies is a robust assessment of the effectiveness of such strategies and key biological information used in monitoring and recovery planning. To address this...
Evaluating the temperature difference parameter in the SSEBop model with satellite observed land surface temperature data
Lei Ji, Gabriel B. Senay, Naga Manohar Velpuri, Stefanie Kagone
2019, Remote Sensing (11)
The Operational Simplified Surface Energy Balance (SSEBop) model uses the principle of satellite psychrometry to produce spatially explicit actual evapotranspiration (ETa) with remotely sensed and weather data. The temperature difference (dT) in the model is a predefined parameter quantifying the difference between surface temperature at bare soil and air...
Growth of hatchery‐reared chinook salmon in Lakes Michigan and Huron exhibits limited spatial variation but Is temporally linked to alewife abundance
M.S Kornis, D.G. Simpkins, A.A. Lane, David M. Warner, C.B. Bronte
2019, North American Journal of Fisheries Management (39) 1155-1174
Chinook Salmon Oncorhynchus tshawytscha were introduced into Lakes Michigan and Huron in the 1960s to diversify recreational fisheries and reduce overabundant, nonnative Alewife Alosa pseudoharengus. Alewife remain the primary prey of Chinook Salmon but have experienced substantial declines in abundance due to reduced food resources and salmonine predation pressure. The...
Estimates of long-term mean daily streamflow and annual nutrient and suspended-sediment loads considered for use in regional SPARROW models of the Conterminous United States, 2012 base year
David A. Saad, Gregory E. Schwarz, Denise M. Argue, David W. Anning, Scott A. Ator, Anne B. Hoos, Stephen D. Preston, Dale M. Robertson, Daniel Wise
2019, Scientific Investigations Report 2019-5069
Streamflow, nutrient, and sediment concentration data needed to estimate long-term mean daily streamflow and annual constituent loads were compiled from Federal, State, Tribal, and regional agencies, universities, and nongovernmental organizations. The streamflow and loads are used to develop Spatially Referenced Regressions on Watershed Attributes (SPARROW) models. SPARROW models help describe...
Water-quality and geochemical variability in the Little Arkansas River and Equus Beds aquifer, south-central Kansas, 2001–16
Mandy L. Stone, Brian J. Klager, Andrew C. Ziegler
2019, Fact Sheet 2019-3017
This fact sheet describes water quality and geochemistry of the Little Arkansas River and Equus Beds aquifer during 2001 through 2016 as part of the City of Wichita’s Equus Beds aquifer storage and recovery project in south-central Kansas. The Equus Beds aquifer storage and recovery project was developed to help...
Water-quality and geochemical variability in the Little Arkansas River and Equus aquifer, south-central Kansas, 2001–16
Mandy L. Stone, Brian J. Klager, Andrew C. Ziegler
2019, Scientific Investigations Report 2019-5026
The city of Wichita’s water supply currently (2019) comes from two primary sources: Cheney Reservoir and the Equus Beds aquifer. The Equus Beds aquifer storage and recovery project was developed to help the city of Wichita meet increasing future water demands. Source water for artificial recharge comes from the Little...
Temporal changes in avian community composition in lowland conifer habitats at the southern edge of the boreal zone in the Adirondack Park, NY
Michale Glennon, Stephen Langdon, Madeleine A. Rubenstein, Molly S. Cross
2019, PLoS ONE (14)
Climate change represents one of the most significant threats to human and wildlife communities on the planet. Populations at range margins or transitions between biomes can be particularly instructive for observing changes in biological communities that may be driven by climate change. Avian communities in lowland boreal habitats in the...
One hundred pressing questions on the future of global fish migration science, conservation, and policy
Robert J. Lennox, Craig P. Paukert, Kim Aarestrup, Marie Auger-Methe, Lee J. Baumgartner, Kim Birnie-Gauvin, Kristin Boe, Kerry Brink, Jacob W Brownscombe, Yushun Chen, J. G. Davidsen, Erika J. Eliason, Alexander Filous, Bronwyn Gillanders, Ingebord Palm Helland, Andrij Z Horodysky, Stephanie R. Januchowski-Hartley, Susan K. Lowerre-Barbieri, Martyn C. Lucas, Eduardo G Martins, Karen J Murchie, Paulo S. Pompeu, Michael Power, Rajeev Raghavan, Frank J. Rahel, David Secor, Jason Thiem, Eva B. Thorstad, Hiroshi Ueda, Fred G. Whoriskey, Stephen J. Cooke
2019, Frontiers in Ecology and Evolution (7)
Migration is a widespread but highly diverse component of many animal life histories. Fish migrate throughout the world's oceans, within lakes and rivers, and between the two realms, transporting matter, energy, and other species (e.g., microbes) across boundaries. Migration is therefore a process responsible for myriad ecosystem services. Many human...
Development and implementation of an empirical habitat change model and decision support tool for estuarine ecosystems
Melanie J. Davis, Isa Woo, Susan E.W. De La Cruz
2019, Ecological Modelling (410)
Widespread land use change in coastal ecosystems has led to a decline in the amount of habitat available for fish and wildlife, lower production of ecosystem goods and services, and loss of recreational and aesthetic value. This has prompted global efforts to...
Incorporating uncertainty and risk into decision making to reduce nitrogen inputs to impaired waters
David M. Martin, Fred Johnson
2019, Journal of Environmental Management (249)
This article aims to understand decision making under uncertainty and risk, with a case study on Cape Cod, Massachusetts. Decision makers need to consider imperfect information on the cost and effectiveness of advanced nitrogen-removing on-site wastewater treatment systems as options to mitigate water quality degradation. Research included modeling nitrogen load...
Radiocarbon and geologic evidence reveal Ilopango volcano as source of the colossal 'mystery' eruption of 539/40 CE
Robert A. Dull, John R. Southon, Steffen Kutterolf, Kevin J. Anchukaitis, Armin Freundt, David Wahl, Payson Sheets, Paul Amaroli, Walter Hernandez, Micheal C. Weimann, Clive Oppenheimer
2019, Quaternary Science Reviews (222)
Ilopango volcano (El Salvador) erupted violently during the Maya Classic Period (250–900 CE) in a densely-populated and intensively-cultivated region of the southern Maya realm, causing regional abandonment of an area covering more than 20,000 km2. However, neither the regional nor global impacts of the Tierra Blanca Joven (TBJ) eruption in Mesoamerica...
