Water-resources and land-surface deformation evaluation studies at Fort Irwin National Training Center, Mojave Desert, California
Jill N. Densmore, Justine E. Dishart, David M. Miller, David C. Buesch, Lyndsay B. Ball, Paul A. Bedrosian, Linda R. Woolfenden, Geoffrey Cromwell, Matthew K. Burgess, Joseph Nawikas, David O’Leary, Adam Kjos, Michelle Sneed, Justin T. Brandt
2017, Conference Paper, 2017 Desert Symposium Field Guide and Proceedings - ECSZ does it: Revisiting the eastern California Shear Zone
The U.S. Army Fort Irwin National Training Center (NTC), in the Mojave Desert, obtains all of its potable water supply from three groundwater basins (Irwin, Langford, and Bicycle) within the NTC boundaries (fig. 1; California Department of Water Resources, 2003). Because of increasing water demands at the NTC, the U.S....
Use of fish telemetry in rehabilitation planning, management, and monitoring in Areas of Concern in the Laurentian Great Lakes
J.L. Brooks, C. Boston, Susan E. Doka, Dimitry Gorsky, K. Gustavson, Darryl W. Hondorp, Daniel A. Isermann, Jonathan D. Midwood, T. C. Pratt, Andrew M. Rous, J. L. Withers, C.C. Krueger, S. J. Cooke
2017, Environmental Management (60) 1139-1154
Freshwater ecosystems provide many ecosystem services; however, they are often degraded as a result of human activity. To address ecosystem degradation in the Laurentian Great Lakes, Canada and the United States of America established the Great Lakes Water Quality Agreement (GLWQA). In 1987, 43 highly polluted and impacted areas were...
Mineralogical characterization of weathered outcrops as a tool for constraining water chemistry predictions during project planning
Tamara Diedrich, Paul Fix, Andrea L. Foster
2017, Conference Paper, Proceedings of IMWA 2017
Weathered samples from naturally exposed outcrops of troctolite associated with a magmatic Ni-Cu sulphide deposit were characterized by synchrotron-based micro-X-ray fluorescence mapping (µ-XRF) and X-ray absorption spectroscopy (XAS), as well as by lab-based X-ray diffraction, electron microscopy, Raman spectroscopy and wet chemical methods. Metal mobility in weathered samples was assessed using a sequential leach...
Quantifying animal movement for caching foragers: the path identification index (PII) and cougars, Puma concolor
Kirsten E. Ironside, David J. Mattson, Tad Theimer, Brian Jansen, Brandon Holton, Terence R. Arundel, Michael Peters, Joseph O. Sexton, Thomas C. Edwards Jr.
2017, Movement Ecology (5) 1-17
Relocation studies of animal movement have focused on directed versus area restricted movement, which rely on correlations between step-length and turn angles, along with a degree of stationarity through time to define behavioral states. Although these approaches may work well for grazing foraging strategies in a patchy landscape, species...
Attaching transmitters to waterbirds using one versus two subcutaneous anchors: Retention and survival trade-offs
Tyler Lewis, Daniel Esler, Brian D. Uher-Koch, Rian D. Dickson, Eric M. Anderson, Joseph R. Evenson, Jerry W. Hupp, Paul L. Flint
2017, Wildlife Society Bulletin (41) 691-700
A major challenge of wildlife telemetry is choosing an attachment technique that maximizes transmitter retention while minimizing negative side effects. For waterbirds, attachment of transmitters with subcutaneous anchors has been an effective and well-established technique, having been used on >40 species. This method was recently modified to include a second...
Walleye age estimation using otoliths and dorsal spines: Preparation techniques and sampling guidelines based on sex and total length
Daniel J. Dembkowski, Daniel A. Isermann, Ryan P. Koenigs
2017, Journal of Fish and Wildlife Management (8) 474-486
We used dorsal spines and otoliths from 735 Walleye Sander vitreus collected from 35 Wisconsin water bodies to evaluate whether 1) otolith and dorsal spine cross sections provided age estimates similar to simpler methods of preparation (e.g., whole otoliths and dorsal spines, cracked otoliths); and 2) between-reader precision and differences between spine...
Effects of thermal variability on broadband seismometers: Controlled experiments, observations, and implications
Claire Doody, Adam T. Ringler, Robert Anthony, David C. Wilson, Austin Holland, Charles R. Hutt, Leo Sandoval
2017, Bulletin of the Seismological Society of America (108) 493-502
Isolating seismic instruments from temperature fluctuations is routine practice within the seismological community. However, the necessary degree of thermal stability required in broadband installations to avoid generating noise or compromising the fidelity in the seismic records is largely unknown and likely application dependent. To quantify the temperature sensitivity of seismometers...
Investigating seagrass in Toxoplasma gondii transmission in Florida (Trichechus manatus latirostris) and Antillean (T. m. manatus) manatees
Heidi M. Wyrosdick, Richard W. Gerhold, Chunlei Su, Antonio A. Mignucci-Giannoni, Robert K. Bonde, Alycia Chapman, Carla Riviera-Perez, Jessica Martinez, Debra L. Miller
2017, Diseases of Aquatic Organisms (127) 65-69
Toxoplasma gondii is a feline protozoan reported to cause morbidity and mortality in manatees and other marine mammals. Given the herbivorous nature of manatees, ingestion of oocysts from contaminated water or seagrass is presumed to be their primary mode of infection. The objectives of this study were to investigate oocyst contamination...
A Bayesian-based system to assess wave-driven flooding hazards on coral reef-lined coasts
S. G. Pearson, Curt D. Storlazzi, A. R. van Dongeren, M. F. S. Tissier, A. J. H. M. Reniers
2017, Journal of Geophysical Research C: Oceans (122) 10099-10117
Many low-elevation, coral reef-lined, tropical coasts are vulnerable to the effects of climate change, sea level rise, and wave-induced flooding. The considerable morphological diversity of these coasts and the variability of the hydrodynamic forcing that they are exposed to make predicting wave-induced flooding a challenge. A process-based wave-resolving hydrodynamic model...
Evaluating the potential for weed seed dispersal based on waterfowl consumption and seed viability
Jaime A. Farmer, Elisabeth B. Webb, Robert A. Pierce II, Kevin W. Bradley
2017, Pest Management Science (73) 2592-2603
BACKGROUNDMigratory waterfowl have often been implicated in the movement of troublesome agronomic and wetland weed species. However, minimal research has been conducted to investigate the dispersal of agronomically important weed species by waterfowl. The two objectives for this project were to determine what weed species are being...
CO2 cycle
Timothy N. Titus, Shane Byrne, Anthony Colaprete, Francois Forget, Timothy I. Michaels, Thomas H. Prettyman
2017, Book chapter, The atmosphere and climate of Mars
This chapter discusses the use of models, observations, and laboratory experiments to understand the cycling of CO2 between the atmosphere and seasonal Martian polar caps. This cycle is primarily controlled by the polar heat budget, and thus the emphasis here is on its components, including solar and infrared radiation, the...
Genetic implications of bottleneck effects of differing severities on genetic diversity in naturally recovering populations: An example from Hawaiian coot and Hawaiian gallinule
Sarah A. Sonsthagen, Robert E. Wilson, Jared G. Underwood
2017, Ecology and Evolution (7) 9925-9934
The evolutionary trajectory of populations through time is influenced by the interplay of forces (biological, evolutionary, and anthropogenic) acting on the standing genetic variation. We used microsatellite and mitochondrial loci to examine the influence of population declines, of varying severity, on genetic diversity within two Hawaiian endemic waterbirds, the Hawaiian...
Evaluating factors driving population densities of mayfly nymphs in Western Lake Erie
Martin A. Stapanian, Patrick Kocovsky, Betsy L. Bodamer Scarbro
2017, Journal of Great Lakes Research (43) 1111-1118
Mayfly (Hexagenia spp.) nymphs have been widely used as indicators of water and substrate quality in lakes. Thermal stratification and the subsequent formation of benthic hypoxia may result in nymph mortality. Our goal was to identify potential associations between recent increases in temperature and eutrophication, which exacerbate hypoxic events in lakes,...
The effect of beaver ponds on water quality in rural coastal plain streams
Christopher W. Bason, Daniel Kroes, Mark M. Brinson
2017, Southeastern Naturalist (16) 584-602
We compared water-quality effects of 13 beaver ponds on adjacent free-flowing control reaches in the Coastal Plain of rural North Carolina. We measured concentrations of nitrate, ammonium, soluble reactive phosphorus (SRP), and suspended sediment (SS) upstream and downstream of paired ponds and control reaches. Nitrate and SS concentrations decreased, ammonium...
Macroscale patterns of synchrony identify complex relationships among spatial and temporal ecosystem drivers
Noah R. Lottig, Pang-Ning Tan, Tyler Wagner, Kendra Spence Cheruvelil, Patricia A. Soranno, Emily H. Stanley, Caren E. Scott, Craig A. Stow, Shuai Yuan
2017, Ecosphere (8) 1-11
Ecology has a rich history of studying ecosystem dynamics across time and space that has been motivated by both practical management needs and the need to develop basic ideas about pattern and process in nature. In situations in which both spatial and temporal observations are available, similarities in temporal behavior...
Food web conceptual model
Rosemary Hartman, Larry R. Brown, Jim Hobbs
2017, Interagency Ecological Program Technical Report 91
This chapter describes a general model of food webs within tidal wetlands and represents how physical features of the wetland affect the structure and function of the food web. This conceptual model focuses on how the food web provides support for (or may reduce support for) threatened fish species. This...
Vulnerability of coral reefs to bioerosion from land-based sources of pollution
Nancy G. Prouty, Anne Cohen, Kimberly K. Yates, Curt D. Storlazzi, Peter W. Swarzenski, Darla White
2017, Journal of Geophysical Research C: Oceans (122) 9319-9331
Ocean acidification (OA), the gradual decline in ocean pH and [ ] caused by rising levels of atmospheric CO2, poses a significant threat to coral reef ecosystems, depressing rates of calcium carbonate (CaCO3) production, and enhancing rates of bioerosion and dissolution. As...
Groundwater model of the Great Basin carbonate and alluvial aquifer system version 3.0: Incorporating revisions in southwestern Utah and east central Nevada
Lynette E. Brooks
2017, Scientific Investigations Report 2017-5072
The groundwater model described in this report is a new version of previously published steady-state numerical groundwater flow models of the Great Basin carbonate and alluvial aquifer system, and was developed in conjunction with U.S. Geological Survey studies in Parowan, Pine, and Wah Wah Valleys, Utah....
Reviews and syntheses: Field data to benchmark the carbon cycle models for tropical forests
Deborah A. Clark, Shinichi Asao, Rosie A. Fisher, Sasha C. Reed, Peter B. Reich, Michael G. Ryan, Tana E. Wood, Xiaojuan Yang
2017, Biogeosciences (14) 4663-4690
For more accurate projections of both the global carbon (C) cycle and the changing climate, a critical current need is to improve the representation of tropical forests in Earth system models. Tropical forests exchange more C, energy, and water with the atmosphere than any other class of land ecosystems. Further,...
Determining quantity and quality of retained oil in mature marly chalk and marlstone of the Cretaceous Niobrara Formation by low-temperature hydrous pyrolysis
Michael Lewan, Mark D. Sonnenfeld
2017, Conference Paper, Unconventional Resources Technology Conference
Low-temperature hydrous pyrolysis (LTHP) at 300°C (572°F) for 24 h released retained oils from 12- to 20-meshsize samples of mature Niobrara marly chalk and marlstone cores. The released oil accumulated on the water surface of the reactor, and is compositionally similar to oil produced from the same well. The quantities...
LAGOS-NE: a multi-scaled geospatial and temporal database of lake ecological context and water quality for thousands of US lakes
Patricia A. Soranno, Linda C. Bacon, Michael Beauchene, Karen E. Bednar, Edward G. Bissell, Claire K. Boudreau, Marvin G. Boyer, Mary T. Bremigan, Stephen R. Carpenter, Jamie W. Carr, Kendra S. Cheruvelil, Samuel T. Christel, Matt Claucherty, Sarah M. Collins, Joseph D. Conroy, John A. Downing, Jed Dukett, C. Emi Fergus, Christopher T. Filstrup, Clara Funk, Maria J. Gonzalez, Linda T. Green, Corinna Gries, John D. Halfman, Stephen K. Hamilton, Paul C. Hanson, Emily N. Henry, Elizabeth M. Herron, Celeste Hockings, James R. Jackson, Kari Jacobson-Hedin, Lorraine L. Janus, William W. Jones, John R. Jones, Caroline M. Keson, Katelyn B.S. King, Scott A. Kishbaugh, Jean-Francois Lapierre, Barbara Lathrop, Jo A. Latimore, Yuehlin Lee, Noah R. Lottig, Jason A. Lynch, Leslie J. Matthews, William H. McDowell, Karen E.B. Moore, Brian Neff, Sarah J. Nelson, Samantha K. Oliver, Michael L. Pace, Donald C. Pierson, Autumn C. Poisson, Amina I. Pollard, David M. Post, Paul O. Reyes, Donald Rosenberry, Karen M. Roy, Lars G. Rudstam, Orlando Sarnelle, Nancy J. Schuldt, Caren E. Scott, Nicholas K. Skaff, Nicole J. Smith, Nick R. Spinelli, Joseph J. Stachelek, Emily H. Stanley, John L. Stoddard, Scott B. Stopyak, Craig A. Stow, Jason M. Tallant, Pang-Ning Tan, Anthony P. Thorpe, Michael J. Vanni, Tyler Wagner, Gretchen Watkins, Kathleen C. Weathers, Katherine E. Webster, Jeffrey D. White, Marcy K. Wilmes, Shuai Yuan
2017, GigaScience (6) 1-22
Understanding the factors that affect water quality and the ecological services provided by freshwater ecosystems is an urgent global environmental issue. Predicting how water quality will respond to global changes not only requires water quality data, but also information about the ecological context of individual water bodies across broad spatial...
Multi-level multi-task learning for modeling cross-scale interactions in nested geospatial data
Shuai Yuan, Jiayu Zhou, Pang-Ning Tan, Emi Fergus, Tyler Wagner, Patricia Sorrano
2017, Conference Paper, 2017 IEEE International Conference on Data Mining (ICDM)
Predictive modeling of nested geospatial data is a challenging problem as the models must take into account potential interactions among variables defined at different spatial scales. These cross-scale interactions, as they are commonly known, are particularly important to understand relationships among ecological properties at macroscales. In this paper, we present...
Meeting the challenge of interacting threats in freshwater ecosystems: A call to scientists and managers
Laura S. Craig, Julian D. Olden, Angela Arthington, Sally Entrekin, Charles P. Hawkins, John J. Kelly, Theodore A. Kennedy, Bryan M. Maitland, Emma J. Rosi, Allison H. Roy, David L. Strayer, Jennifer L. Tank, Amie O. West, Matthew S. Wooten
2017, Elementa: Science of the Anthropocene
Human activities create threats that have consequences for freshwater ecosystems and, in most watersheds, observed ecological responses are the result of complex interactions among multiple threats and their associated ecological alterations. Here we discuss the value of considering multiple threats in research and management, offer suggestions for filling knowledge gaps,...
Sea turtles, light pollution, and citizen science: A preliminary report
Heather Afford, Susan Teel, Mark Nicholas, Thomas R. Stanley, Jeremy White
2017, Conference Paper, Connections across people, place, and time: Proceedings of the 2017 George Wright Society Conference on Parks, Protected Areas, and Cultural Sites
Sea turtles are an important ecological resource for Gulf Islands National Seashore’s (Gulf Islands) waters and shorelines. Regionally, sea turtles face anthropogenic threats from situations such as entanglement in fishing gear and ingestion of marine debris, as well as possible changes in sex ratios due to increasing temperatures related to human-induced...
A statistical method to predict flow permanence in dryland streams from time series of stream temperature
Ivan Arismendi, Jason B. Dunham, Michael Heck, Luke Schultz, David Hockman-Wert
2017, Water (9) 1-13
Intermittent and ephemeral streams represent more than half of the length of the global river network. Dryland freshwater ecosystems are especially vulnerable to changes in human-related water uses as well as shifts in terrestrial climates. Yet, the description and quantification of patterns of flow permanence in these systems is challenging...
