Monitoring algal blooms in drinking water reservoirs using the Landsat-8 Operational Land Imager
Darryl Keith, Jennifer Rover, Jason Green, Brian Zalewsky, Mike Charpentier, Glen Hursby, Joseph Bishop
2018, International Journal of Remote Sensing (39) 2818-2846
In this study, we demonstrated that the Landsat-8 Operational Land Imager (OLI) sensor is a powerful tool that can provide periodic and system-wide information on the condition of drinking water reservoirs. The OLI is a multispectral radiometer (30 m spatial resolution) that allows ecosystem observations at spatial and temporal scales that...
Vertical self-sorting behavior in juvenile Chinook salmon (Oncorhynchus tshawytscha): evidence for family differences and variation in growth and morphology
Julia R. Unrein, E.J. Billman, Karen M. Cogliati, Rob S. Chitwood, David L. G. Noakes, Carl B. Schreck
2018, Environmental Biology of Fishes (101) 341-353
Life history variation is fundamental to the evolution of Pacific salmon and their persistence under variable conditions. We discovered that Chinook salmon sort themselves into surface- and bottom-oriented groups in tanks within days after exogenous feeding. We hypothesised that this behaviour is correlated with subsequent differences in body morphology and...
Pronounced centennial-scale Atlantic Ocean climate variability correlated with Western Hemisphere hydroclimate
Kaustubh Thirumalai, Terrence M. Quinn, Yuko Okumura, Julie N. Richey, Judson W. Partin, Richard Z. Poore, Eduardo Moreno-Chamarro
2018, Nature Communications (9) 1-11
Surface-ocean circulation in the northern Atlantic Ocean influences Northern Hemisphere climate. Century-scale circulation variability in the Atlantic Ocean, however, is poorly constrained due to insufficiently-resolved paleoceanographic records. Here we present a replicated reconstruction of sea-surface temperature and salinity from a site sensitive to North Atlantic circulation in the Gulf of...
Nonbreeding home‐range size and survival of lesser prairie‐chickens
Samantha G. Robinson, David A. Haukos, Reid T. Plumb, Joseph M. Lautenbach, Daniel S. Sullins, John D. Kraft, Jonathan D. Lautenbach, Christian A. Hagen, James C. Pitman
2018, Journal of Wildlife Management (82) 413-423
The lesser prairie‐chicken (Tympanuchus pallidicinctus), a species of conservation concern with uncertain regulatory status, has experienced population declines over the past century. Most research on lesser prairie‐chickens has focused on the breeding season, with little research conducted during the nonbreeding season, a period that exerts a strong influence on demography...
Use of remote sensing to detect and predict aquatic nuisance vegetation growth in coastal Louisiana: Summary of findings
Glenn M. Suir, Kevin J. Suir, Sijan Sapkota
2018, ERDC Technical Report ERDC/EL TR-18-3
On an annual basis, federal and state agencies are responsible for mapping and removing large expanses of aquatic nuisance vegetation from navigable waterways. This study set out to achieve four primary objectives: (1) utilize recent advancements in remote sensing techniques to classify the extent and distribution of aquatic vegetation in...
Estimating factors influencing the detection probability of semiaquatic freshwater snails using quadrat survey methods
Elizabeth L. Roesler, Timothy B. Grabowski
2018, Hydrobiologia (808) 153-161
Developing effective monitoring methods for elusive, rare, or patchily distributed species requires extra considerations, such as imperfect detection. Although detection is frequently modeled, the opportunity to assess it empirically is rare, particularly for imperiled species. We used Pecos assiminea (Assiminea pecos), an endangered semiaquatic snail, as a case...
Seismic hazard, risk, and design for South America
Mark D. Petersen, Stephen Harmsen, Kishor S. Jaiswal, Kenneth S. Rukstales, Nico Luco, Kathleen Haller, Charles Mueller, Allison Shumway
2018, Bulletin of the Seismological Society of America (108) 781-800
We calculate seismic hazard, risk, and design criteria across South America using the latest data, models, and methods to support public officials, scientists, and engineers in earthquake risk mitigation efforts. Updated continental scale seismic hazard models are based on a new seismicity catalog, seismicity rate models, evaluation of earthquake sizes,...
Validation of ATR FT-IR to identify polymers of plastic marine debris, including those ingested by marine organisms
Melissa R. Jung, F. David Horgen, Sara V. Orski, Viviana Rodriguez, Kathryn L. Beers, George H. Balazs, T. Todd Jones, Thierry M. Work, Kayla C. Brignac, Sarah-Jeanne Royer, David K. Hyrenbach, Brenda A. Jensen, Jennifer M. Lynch
2018, Marine Pollution Bulletin (127) 704-716
Polymer identification of plastic marine debris can help identify its sources, degradation, and fate. We optimized and validated a fast, simple, and accessible technique, attenuated total reflectance Fourier transform infrared spectroscopy (ATR FT-IR), to identify polymers contained in plastic ingested by sea turtles. Spectra...
Morphological indicators of a mascon beneath Ceres' largest crater, Kerwan
Michael T. Bland, Anton Ermakov, Carol A. Raymond, David A. Williams, Tim J. Bowling, F. Preusker, Ryan S. Park, Simone Marchi, Julie C. Castillo-Rogez, R.R. Fu, Christopher T. Russell
2018, Geophysical Research Letters (45) 1297-1304
Gravity data of Ceres returned by the National Aeronautics and Space Administration's Dawn spacecraft is consistent with a lower density crust of variable thickness overlying a higher density mantle. Crustal thickness variations can affect the long‐term, postimpact modification of impact craters on Ceres. Here we show...
Integrating future scenario‐based crop expansion and crop conditions to map switchgrass biofuel potential in eastern Nebraska, USA
Yingxin Gu, Bruce K. Wylie
2018, GCB Bioenergy (10) 76-83
Switchgrass (Panicum virgatum) has been evaluated as one potential source for cellulosic biofuel feedstocks. Planting switchgrass in marginal croplands and waterway buffers can reduce soil erosion, improve water quality, and improve regional ecosystem services (i.e. it serves as a potential carbon sink). In previous studies, we mapped high risk marginal...
Assessing the influence of multiple stressors on stream diatom metrics in the upper Midwest, USA
Mark D. Munn, Ian R. Waite, Christopher P. Konrad
2018, Ecological Indicators (85) 1239-1248
Water resource managers face increasing challenges in identifying what physical and chemical stressors are responsible for the alteration of biological conditions in streams. The objective of this study was to assess the comparative influence of multiple stressors on benthic diatoms at 98 sites that spanned a range of stressors in...
Evidence for major input of riverine organic matter into the ocean
Xiaoyan Cao, George R. Aiken, Kenna D. Butler, Thomas G. Huntington, William M. Balch, Jingdong Mao, Klaus Schmidt-Rohr
2018, Organic Geochemistry (116) 62-76
The changes in the structure of XAD-8 isolated dissolved organic matter (DOM) samples along a river (Penobscot River) to estuary (Penobscot Bay) to ocean (across the Gulf of Maine) transect and from the Pacific Ocean were investigated using selective and two dimensional (2D) nuclear magnetic resonance (NMR) spectroscopy coupled with...
Moving in the Anthropocene: Global reductions in terrestrial mammalian movements
Marlee A. Tucker, Katrin Bohning-Gaese, William F. Fagan, John Fryxell, Bram Van Moorter, Susan C Alberts, Abdullahi H. Ali, Andrew M. Allen, Nina Attias, Tal Avgar, Hattie Bartlam-Brooks, Bayarbaatar Buuveibaatar, Jerrold L. Belant, Alessandra Bertassoni, Dean Beyer, Laura Bidner, Floris M. van Beest, Stephen Blake, Niels Blaum, Chloe Bracis, Danielle Brown, P. J. Nico de Bruyn, Francesca Cagnacci, J.M. Calabrese, Constanca Camilo-Alves, Simon Chamaille-Jammes, Andre Chiaradia, Sarah C. Davidson, Todd Dennis, Stephen DeStefano, Duane R. Diefenbach, Iain Douglas-Hamilton, Julian Fennessy, Claudia Fichtel, Wolfgang Fiedler, Christina Fischer, Ilya Fischhoff, Christen H. Fleming, Adam T. Ford, Susanne A. Fritz, Benedikt Gehr, Jacob R. Goheen, Eliezer Gurarie, Mark Hebblewhite, Marco Heurich, A. J. Mark Hewison, Christian Hof, Edward Hurme, Lynne A. Isbell, Rene Janssen, Florian Jeltsch, Petra Kaczensky, Adam Kane, Peter M. Kappeler, Matthew J. Kauffman, Roland Kays, Duncan Kimuyu, Flavia Koch, Bart Kranstauber, Scott LaPoint, Peter Leimgruber, John D. C. Linnell, Pascual Lopez-Lopez, A. Catherine Markham, Jenny Mattisson, Emilia Patricia Medici, Ugo Mellone, E. Merrill, Guilherme de Miranda Mourao, Ronaldo G. Morato, Nicolas Morellet, Thomas A. Morrison, Samuel L. Diaz-Munoz, Atle Mysterud, Dejid Nandintsetseg, Ran Nathan, Aidin Niamir, John Odden, Robert B. O’Hara, Luiz G. R. Oliveira-Santos, Kirk A. Olson, Bruce D. Patterson, Rogerio Cunha de Paula, Luca Pedrotti, Bjorn Reineking, Martin Rimmler, T. L. Rogers, Christer Moe Rolandsen, Christopher S. Rosenberry, Daniel I. Rubenstein, Kamran Safi, Sonia Said, Nir Sapir, Hall Sawyer, Niels Martin Schmidt, Nuria Selva, Agnieszka Sergiel, Enkhtuvshin Shiilegdamba, Joao Paulo Silva, N. Singh, Erling J. Solberg, Orr Spiegel, Olav Strand, S.R. Sundaresan, Wiebke Ullmann, Ulrich Voigt, J. Wall, David W. Wattles, Martin Wikelski, Christopher C. Wilmers, John W. Wilson, George Wittemyer, Filip Zieba, Tomasz Zwijacz-Kozica, Thomas Mueller
2018, Science (359) 466-469
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human...
A tool for efficient, model-independent management optimization under uncertainty
Jeremy T. White, Michael N. Fienen, Paul M. Barlow, Dave E. Welter
2018, Environmental Modelling and Software (100) 213-221
To fill a need for risk-based environmental management optimization, we have developed PESTPP-OPT, a model-independent tool for resource management optimization under uncertainty. PESTPP-OPT solves a sequential linear programming (SLP) problem and also implements (optional) efficient, “on-the-fly” (without user intervention) first-order, second-moment (FOSM) uncertainty techniques to estimate model-derived constraint uncertainty. Combined...
Contaminants in tropical island streams and their biota
Elissa N. Buttermore, W. Gregory Cope, Thomas J. Kwak, Patrick B. Cooney, Damian Shea, Peter R. Lazaro
2018, Environmental Research (161) 615-623
Environmental contamination is problematic for tropical islands due to their typically dense human populations and competing land and water uses. The Caribbean island of Puerto Rico (USA) has a long history of anthropogenic chemical use, and its human population density is among the highest globally, providing a model environment to...
Survey of beaver-related restoration practices in rangeland streams of the western USA
David S. Pilliod, Ashley T. Rohde, Susan Charnley, Rachael R Davee, Jason B. Dunham, Hannah Gosnell, Gordon E. Grant, Mark B. Hausner, Justin L. Huntington, Caroline Nash
2018, Environmental Management (61) 58-68
Poor condition of many streams and concerns about future droughts in the arid and semi-arid western USA have motivated novel restoration strategies aimed at accelerating recovery and increasing water resources. Translocation of beavers into formerly occupied habitats, restoration activities encouraging beaver recolonization, and instream structures mimicking the effects of beaver...
Estimating wetland connectivity to streams in the Prairie Pothole Region: An isotopic and remote sensing approach
J. R. Brooks, David M. Mushet, Melanie K. Vanderhoof, Scott G. Leibowitz, J. R. Christensen, Brian Neff, Donald O. Rosenberry, W. D. Rugh, L.C. Alexander
2018, Water Resources Research (54) 955-977
Understanding hydrologic connectivity between wetlands and perennial streams is critical to understanding the reliance of stream flow on inputs from wetlands. We used the isotopic evaporation signal in water and remote sensing to examine wetland‐stream hydrologic connectivity within the Pipestem Creek watershed, North Dakota, a watershed dominated by prairie‐pothole wetlands....
Limited contribution of ancient methane to surface waters of the U.S. Beaufort Sea shelf
Katy J. Sparrow, John D. Kessler, John R. Southon, Fenix Garcia-Tigreros, Kathryn M. Schreiner, Carolyn D. Ruppel, John B. Miller, Scott J. Lehman, Xiaomei Xu
2018, Science Advances (4)
In response to warming climate, methane can be released to Arctic Ocean sediment and waters from thawing subsea permafrost and decomposing methane hydrates. However, it is unknown whether methane derived from this sediment storehouse of frozen ancient carbon reaches the atmosphere. We quantified the fraction of methane derived from ancient...
Dynamic interactions between coastal storms and salt marshes: A review
Nicoletta Leonardi, Iacopo Carnacina, Carmine Donatelli, Neil K. Ganju, Andrew James Plater, Mark Schuerch, Stijn Temmerman
2018, Geomorphology (301) 92-107
This manuscript reviews the progresses made in the understanding of the dynamic interactions between coastal storms and salt marshes, including the dissipation of extreme water levels and wind waves across marsh surfaces, the geomorphic impact of storms on salt marshes, the preservation of hurricanes signals and deposits into the...
On factors influencing air-water gas exchange in emergent wetlands
David T. Ho, Victor C. Engel, Sara Ferron, Benjamin Hickman, Jay Choi, Judson W. Harvey
2018, Journal of Geophysical Research G: Biogeosciences (123) 178-192
Knowledge of gas exchange in wetlands is important in order to determine fluxes of climatically and biogeochemically important trace gases and to conduct mass balances for metabolism studies. Very few studies have been conducted to quantify gas transfer velocities in wetlands, and many wind speed/gas exchange parameterizations used in oceanographic...
Sirenian life history
Robert K. Bonde
2018, Book chapter, Encyclopedia of marine mammals
Sirenians, including the manatees and dugongs, are large herbivorous mammals that have evolved to an aquatic form since the Eocene epoch. Sirenians have unique adaptations, including dense bone for ballast and a longitudinal hemidiaphragm separating paired lungs (which aid in maintaining a horizontal posture in the water column), species-specific rostral...
Effect of fishing effort on catch rate and catchability of largemouth bass in small impoundments
M. G. Wegener, Harold Schramm, J. W. Neal, P.D. Gerard
2018, Fisheries Management and Ecology (25) 66-76
Largemouth bass Micropterus salmoides (Lacepède) catch rates decline with sustained fishing effort, even without harvest. It is unclear why declines in catch rate occur, and little research has been directed at how to improve catch rate. Learning has been proposed as a reason for declining catch rate, but has never been tested...
A molecular investigation of soil organic carbon composition across a subalpine catchment
Hsiao-Tieh Hsu, Corey R. Lawrence, Matthew J. Winnick, John R. Bargar, Katharine Maher
2018, Soil Systems (2) 1-23
The dynamics of soil organic carbon (SOC) storage and turnover are a critical component of the global carbon cycle. Mechanistic models seeking to represent these complex dynamics require detailed SOC compositions, which are currently difficult to characterize quantitatively. Here, we address this challenge by using a novel approach that combines...
Effects of environmental variables on invasive amphibian activity: Using model selection on quantiles for counts
Benjamin J. Muller, Brian S. Cade, Lin Schwarzkoph
2018, Ecosphere (9) 1-14
Many different factors influence animal activity. Often, the value of an environmental variable may influence significantly the upper or lower tails of the activity distribution. For describing relationships with heterogeneous boundaries, quantile regressions predict a quantile of the conditional distribution of the dependent variable. A quantile count model extends linear...
Strengthening links between waterfowl research and management
Anthony J. Roberts, John M. Eadie, David Howerter, Fred A. Johnson, James D. Nichols, Michael C. Runge, Mark Vrtiska, Byron K. Williams
2018, Journal of Wildlife Management (82) 260-265
Waterfowl monitoring, research, regulation, and adaptive planning are leading the way in supporting science-informed wildlife management. However, increasing societal demands on natural resources have created a greater need for adaptable and successful linkages between waterfowl science and management. We presented a special session at the 2016 North American Duck Symposium,...
