San Pedro River Aquifer Binational Report
James B. Callegary, Ismael Minjarez Sosa, Elia Maria Tapia Villasenor, Placido dos Santos, Rogelio Monreal Saavedra, Franciso Javier Grijalva Noriega, A. K. Huth, Floyd Gray, C. A. Scott, Sharon Megdal, L. A. Oroz Ramos, Miguel Rangel Medina, James M. Leenhouts
2016, Report
The United States and Mexico share waters in a number of hydrological basins and aquifers that cross the international boundary. Both countries recognize that, in a region of scarce water resources and expanding populations, a greater scientific understanding of these aquifer systems would be beneficial. In light of this, the...
Acoustic doppler velocimeter backscatter for quantification of suspended sediment concentration in South San Francisco Bay
Mehmet Ozturk, Paul A. Work
2016, Conference Paper, Coastal engineering proceedings
A data set was acquired on a shallow mudflat in south San Francisco Bay that featured simultaneous, co-located optical and acoustic sensors for subsequent estimation of suspended sediment concentrations (SSC). The optical turbidity sensor output was converted to SSC via an empirical relation derived at a nearby site using bottle...
State-and-transition models: Conceptual versus simulation perspectives, usefulness and breadth of use, and land management applications
Louis Provencher, Leonardo Frid, Christina Czembor, Jeffrey T. Morisette
2016, Book chapter, Exotic brome-grasses in arid and semiarid ecosystems of the western US
State-and-Transition Simulation Modeling (STSM) is a quantitative analysis method that can consolidate a wide array of resource management issues under a “what-if” scenario exercise. STSM can be seen as an ensemble of models, such as climate models, ecological models, and economic models that incorporate human dimensions and management options. This...
Trophic overlap between native and invasive stream crayfish
Daniel D. Magoulick, Glenn L. Piercey
2016, Hydrobiologia (766) 237-246
We examined trophic dynamics of a stream food web where invasive Orconectes neglectus appear to be displacing native O. eupunctus in the Spring River drainage of the Ozark Highlands, Missouri and Arkansas, USA. We collected crayfish species and possible food sources seasonally from a site of sympatry on the South Fork Spring River. We...
Drivers of Caribbean freshwater ecosystems and fisheries
Thomas J. Kwak, Augustin C. Engman, Jesse R. Fischer, Craig G. Lilyestrom
2016, Book chapter, Freshwater, fish and the future: Proceedings of the Global Cross-Sectoral Conference
No abstract available....
Ecology and conservation of Lesser Prairie-Chickens
David A. Haukos, Clint W. Boal, editor(s)
2016, Book
Lesser Prairie-Chickens have experienced substantial declines in terms of population and the extent of area that they occupy. While they are an elusive species, making it difficult at times to monitor them, current evidence indicates that they have been persistently decreasing in number since the Dust Bowl of the 1930s...
Local environmental context conditions the impact of Russian olive in a heterogeneous riparian ecosystem
Graham M. Tuttle, Gabrielle L. Katz, Jonathan M. Friedman, Andrew P. Norton
2016, Invasive Plant Science and Management (9) 272-289
Local abiotic and biotic conditions can alter the strength of exotic species impacts. To better understand the effects of exotic species on invaded ecosystems and to prioritize management efforts, it is important that exotic species impacts are put in local environmental context. We studied how differences in plant community composition,...
Discontinuities concentrate mobile predators: Quantifying organism-environment interactions at a seascape scale
Christina G. Kennedy, Martha E. Mather, Joseph M. Smith, John T. Finn, Linda A. Deegan
2016, Ecosphere (7)
Understanding environmental drivers of spatial patterns is an enduring ecological problem that is critical for effective biological conservation. Discontinuities (ecologically meaningful habitat breaks), both naturally occurring (e.g., river confluence, forest edge, drop-off) and anthropogenic (e.g., dams, roads), can influence the distribution of highly mobile organisms that have land- or seascape...
Evaluation and refinement of Guadalupe Bass conservation strategies to support adaptive management
Timothy B. Grabowski
2016, Cooperator Science Series FWS/CSS-118-2016
Burbot Lota lota is the sole freshwater representative of the cod-like fishes and supports subsistence, commercial, and recreational fisheries worldwide above approximately 40° N. It is a difficult species to manage effectively due to its preference for deep-water habitats and spawning activity under the ice in winter. Like other gadiform...
Loamy, two-storied soils on the outwash plains of southwestern lower Michigan: Pedoturbation of loess with the underlying sand
Michael D. Luehmann, Brad G. Peter, Christopher B. Connallon, Randall J. Schaetzl, Samuel J. Smidt, Wei Liu, Kevin A. Kincare, Toni A. Walkowiak, Elin Thorlund, Marie S. Holler
2016, Annals of the American Association of Geographers (106) 551-572
Soils on many of the outwash plains in southwestern Michigan have loamy upper profiles, despite being underlain by sand-textured outwash. The origin of this upper, loamy material has long been unknown. The purpose of this study is to analyze the spatio-textural characteristics of these loamy-textured sediments to ascertain their origin(s)....
Dominance of 'Gallionella capsiferriformans' and heavy metal association with Gallionella-like stalks in metal-rich pH 6 mine water discharge
Maria Fabisch, Gina Freyer, Carol A. Johnson, Georg Buchel, Denise M. Akob, Thomas R. Neu, Kirsten Kusel
2016, Geobiology (14) 68-90
Heavy metal-contaminated, pH 6 mine water discharge created new streams and iron-rich terraces at a creek bank in a former uranium-mining area near Ronneburg, Germany. The transition from microoxic groundwater with ~5 mm Fe(II) to oxic surface water may provide a suitable habitat for microaerobic iron-oxidizing bacteria (FeOB). In this study,...
Integrated groundwater data management
Peter Fitch, Boyan Brodaric, Matt Stenson, Nathaniel Booth
Anthony J. Jakeman, Olivier Barreteau, Randall J. Hunt, Jean-Daniel Rinaudo, Andrew Ross, editor(s)
2016, Book chapter, Integrated groundwater management
The goal of a data manager is to ensure that data is safely stored, adequately described, discoverable and easily accessible. However, to keep pace with the evolution of groundwater studies in the last decade, the associated data and data management requirements have changed significantly. In particular, there is a growing...
Acadia National Park Climate Change Scenario Planning Workshop summary
Jonathan Star, Nicholas Fisichelli, Alexander Bryan, Amanda Babson, Rebecca Cole-Will, Abraham J. Miller-Rushing
2016, Conference Paper
This report summarizes outcomes from a two-day scenario planning workshop for Acadia National Park, Maine (ACAD). The primary objective of the workshop was to help ACAD senior leadership make management and planning decisions based on up-to-date climate science and assessments of future uncertainty. The workshop was also designed as a...
Rapid environmental change drives increased land use by an Arctic marine predator
Todd C. Atwood, Elizabeth L. Peacock, Melissa A. McKinney, Kate Lillie, Ryan H. Wilson, David C. Douglas, Pat Terletzky, Susanne Miller
2016, PLoS ONE (6)
In the Arctic Ocean’s southern Beaufort Sea (SB), the length of the sea ice melt season (i.e., period between the onset of sea ice break-up in summer and freeze-up in fall) has increased substantially since the late 1990s. Historically, polar bears (Ursus maritimus) of the SB have mostly remained on...
Geologic context of large karst springs and caves in the Ozark National Scenic Riverways, Missouri
David J. Weary, Randall C. Orndorff
2016, Conference Paper
The ONSR is a karst park, containing many springs and caves. The “jewels” of the park are large springs, several of first magnitude, that contribute significantly to the flow and water quality of the Current River and its tributaries. Completion of 1:24,000-scale geologic mapping of the park and surrounding river...
Integrated groundwater management: An overview of concepts and challenges
Anthony J. Jakeman, Olivier Barreteau, Randall J. Hunt, Jean-Daniel Rinaudo, Andrew Ross
Anthony J. Jakeman, Olivier Barreteau, Randall J. Hunt, Jean-Daniel Rinaudo, Andrew Ross, editor(s)
2016, Book chapter, Integrated groundwater management
Managing water is a grand challenge problem and has become one of humanity’s foremost priorities. Surface water resources are typically societally managed and relatively well understood; groundwater resources, however, are often hidden and more difficult to conceptualize. Replenishment rates of groundwater cannot match past and current rates of depletion in...
Dissolved oxygen: Chapter 6
David Senn, Maureen A. Downing-Kunz, Emily Novick
2016, Report, Lower South Bay nutrient synthesis
Dissolved oxygen (DO) concentration serves as an important indicator of estuarine habitat condition, because all aquatic macro-organisms require some minimum DO level to survive and prosper. The instantaneous DO concentration, measured at a specific location in the water column, results from a balance between multiple processes that add or remove...
Forest structure of oak plantations after silvicultural treatment to enhance habitat for wildlife
Daniel J. Twedt, Cherrie-Lee P. Phillip, Michael P. Guilfoyle, R. Randy Wilson
Callie Jo Schweitzer, Wayne K. Clatterbuck, Christopher M. Oswalt, editor(s)
2016, Conference Paper, Proceedings of the 18th Biennial Southern Silvicultural Research Conference
During the past 30 years, thousands of hectares of oak-dominated bottomland hardwood plantations have been planted on agricultural fields in the Mississippi Alluvial Valley. Many of these plantations now have closed canopies and sparse understories. Silvicultural treatments could create a more heterogeneous forest structure, with canopy gaps and...
An overview of environmental impacts and reclamation efforts at the Iron Mountain mine, Shasta County, California
James A Jacobs, Stephen M. Testa, Charles N. Alpers, D. Kirk Nordstrom
2016, Book chapter, Applied geology in California
No abstract available ...
Implications of the methodological choices for hydrologic portrayals of climate change over the contiguous United States: Statistically downscaled forcing data and hydrologic models
Naoki Mizukami, Martyn P. Clark, Ethan D. Gutmann, Pablo A. Mendoza, Andrew J. Newman, Bart Nijssen, Ben Livneh, Lauren E. Hay, Jeffrey R. Arnold, Levi D. Brekke
2016, Journal of Hydrometeorology (17) 75-98
Continental-domain assessments of climate change impacts on water resources typically rely on statistically downscaled climate model outputs to force hydrologic models at a finer spatial resolution. This study examines the effects of four statistical downscaling methods [bias-corrected constructed analog (BCCA), bias-corrected spatial disaggregation applied at daily (BCSDd) and monthly scales...
Proceedings of the 2015 international summit on fibropapillomatosis: Global status, trends, and population impacts
Stacy A. Hargrove, Thierry M. Work, Shandell Brunson, Allen M. Foley, George H. Balazs
2016, NOAA Technical Memorandum NMFS-PIFSC-54
The 2015 International Summit on Fibropapillomatosis (FP) was convened in Honolulu, Hawaii June 11-14, 2015. Scientists from around the world were invited to present results from sea turtle monitoring and research programs as they relate to the global status, trends, and population impacts of FP on green turtles. The participants...
Status and trends in the Lake Superior fish community, 2015
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. Yule
2016, Report, Compiled reports to the Great Lakes Fishery Commission of the annual bottom trawl and acoustics surveys, 2015
In 2015, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 33 offshore stations. Spring and summer water temperatures in 2015 were colder than average, but warmer than that observed in 2014. In the nearshore zone, a total of 11,882 individuals from 22 species...
Age, growth and fall diet of channel catfish in Cheat Lake, West Virginia
Corbin D. Hilling, Stuart A. Welsh, Dustin M. Smith
2016, Journal of Fish and Wildlife Management (7) 304-314
Acidification has historically impaired Cheat Lake's fish community, but recent mitigation efforts within the Cheat River watershed have improved water quality and species richness. Presently, channel catfish Ictalurus punctatus are abundant and attain desirable sizes for anglers. We evaluated the age, growth, and fall diet of the population. We collected...
Science framework for the conservation and restoration strategy of DOI secretarial order 3336: Utilizing resilience and resistance concepts to assess threats to sagebrush ecosystems and greater sage-grouse, prioritize conservation and restoration actions, and inform management strategies
Jeanne C. Chambers, Steve Campbell, John Carlson, Jeffrey L. Beck, Karen J. Clause, Jonathan B. Dinkins, Kevin E. Doherty, Shawn Espinosa, Kathleen A. Griffin, Thomas J. Christiansen, Michele R. Crist, Steve E. Hanser, Douglas W. Havlina, Kenneth F. Henke, Jacob D. Hennig, Laurie L. Kurth, Jeremy D. Maestas, Kenneth E. Mayer, Mary E. Manning, Brian A. Mealor, Clinton McCarthy, Mike Pellant, Karen L. Prentice, Marco A. Perea, Lief A. Wiechman, David A. Pyke, Amarina Wuenschel
2016, Report
The Science Framework for the Conservation and Restoration Strategy of the Department of the Interior, Secretarial Order 3336 (SO 3336), Rangeland Fire Prevention, Management and Restoration, provides a strategic, multiscale approach for prioritizing areas for management and determining effective management strategies across the sagebrush biome. The emphasis of this version...
Status and trends of the Lake Huron offshore demersal fish community, 1976-2015
Edward F. Roseman, Margret Ann Chriscinske, Dana Kristina Castle, Carson G. Prichard
2016, Report, Compiled reports to the Great Lakes Fishery Commission of the annual bottom trawl and acoustics surveys, 2015
The USGS Great Lakes Science Center has conducted trawl surveys to assess annual changes in the offshore demersal fish community of Lake Huron since 1973. Sample sites include five ports in U.S. waters with less frequent sampling near Goderich, Ontario. The 2015 fall bottom trawl survey was carried out between...
