Characterization of acoustic detection efficiency using a gliding robotic fish as a mobile receiver platform
Osama Ennasr, Christopher M. Holbrook, Darryl W. Hondorp, Charles C. Krueger, Demetris Coleman, Pratap Solanki, John Thon, Xiaobo Tan
2020, Animal Biotelemetry (8)
BackgroundAutonomous underwater vehicles (AUVs) and animal telemetry have become important tools for understanding the relationships between aquatic organisms and their environment, but more information is needed to guide the development and use of AUVs as effective animal tracking platforms. A forward-facing acoustic telemetry receiver (VR2Tx 69 kHz; VEMCO, Bedford,...
A large database supports the use of simple models of post-fire tree mortality for thick-barked conifers, with less support for other species
C. Alina Cansler, Sharon M. Hood, Phillip J. van Mantgem, J. Morgan Varner
2020, Fire Ecology (16)
BackgroundPredictive models of post-fire tree and stem mortality are vital for management planning and understanding fire effects. Post-fire tree and stem mortality have been traditionally modeled as a simple empirical function of tree defenses (e.g., bark thickness) and fire injury (e.g., crown scorch). We used the Fire and Tree Mortality...
Double exposure and dynamic vulnerability: Assessing economic well-being, ecological change and the development of the oil and gas industry in coastal Louisiana
Scott Hemmerling, Tim J. B. Carruthers, Ann Hijuelos, Harris C. Bienn
2020, Shore & Beach (88) 72-82
The oil and gas industry has been a powerful driver of economic change in coastal Louisiana for the latter half of the 20th century and into the 21st. Yet, the overall impact of the industry on the economic well-being of host communities is varied, both spatially and temporally. While the...
Diverse cataclysmic floods from Pleistocene glacial Lake Missoula
Roger P. Denlinger, David L. George, Charles M. Cannon, Jim E. O'Connor, Richard B. Waitt
2020, GSA Special Volume on Pleistocene megafloods (548)
In late Wisconsin time, the Purcell Trench lobe of the Cordilleran ice sheet dammed the Clark Fork of the Columbia River in western Montana, creating glacial Lake Missoula. During part of this epoch, the Okanogan lobe also dammed the Columbia River downstream, creating glacial Lake Columbia in northeast Washington. Repeated...
Geomorphic and sedimentary effects of modern climate change: Current and anticipated future conditions in the western United States
Amy E. East, Joel B. Sankey
2020, Reviews of Geophysics (58)
Hydroclimatic changes associated with global warming over the past 50 years have been documented widely, but physical landscape responses are poorly understood thus far. Detecting sedimentary and geomorphic signals of modern climate change presents challenges owing to short record lengths, difficulty resolving signals in stochastic natural systems, influences of land...
Spectral wave-driven bedload transport across a coral reef flat/lagoon complex
Kurt J. Rosenberger, Curt D. Storlazzi, Olivia M. Cheriton, Andrew Pomeroy, Jeff E. Hansen, Ryan Lowe, Mark Buckley
2020, Frontiers in Marine Science (7)
Coral reefs are an important source of sediment for reef-lined coasts by helping to maintain beaches while also providing protection in the form of wave energy dissipation. Understanding the mechanisms by which sediment is delivered to the coast as well as better constraining the total volumes generated are critical...
Predicting multi-species foraging hotspots for marine turtles in the Gulf of Mexico
Ikuko Fujisaki, Kristen Hart, David N. Bucklin, Autumn R. Iverson, Cynthia Rubio, Margaret M. Lamont, Raul de Jesus G.D. Miron, Patrick M. Burchfield, Jaime Pena, Donna J. Shaver
2020, Endangered Species Research (43) 253-266
Quantifying the distribution of animals and identifying underlying characteristics that define suitable habitat are essential for effective conservation of free-ranging species. Prioritizing areas for conservation is important in managing a geographic extent that has a high level of disturbance and limited conservation resources. We examined the potential use of...
Spatial fingerprint of younger dryas cooling and warming in eastern North America
David Fastovich, James M. Russell, Stephen T. Jackson, Teresa R. Krause, Shaun A. Marcott, John W. Williams
2020, Geophysical Research Letters (47)
The Younger Dryas (YD, 12.9–11.7 ka) is the most recent, near-global interval of abrupt climate change with rates similar to modern global warming. Understanding the causes and biodiversity effects of YD climate changes requires determining the spatial fingerprints of past temperature changes. Here we build pollen-based and branched...
Variable-density groundwater flow and contaminant transport, Operable Unit 1, Naval Base Kitsap, Keyport, Washington
Richard M. Yager, Wendy B. Welch, Alexander O. Headman, Richard S. Dinicola
2020, Scientific Investigations Report 2020-5066
Chlorinated volatile organic compounds (CVOCs) have migrated to groundwater beneath a former 9-acre landfill at Operable Unit 1 (OU-1) on Naval Base Kitsap, which was active from the 1930s through 1973 on the Keyport Peninsula, in Kitsap County, Washington. Biodegradation of CVOCs at OU-1 limits the mass of dissolved-phase CVOCs...
Simulated effects of pumping in the Death Valley Regional Groundwater Flow System, Nevada and California—Selected management scenarios projected to 2120
Nora C. Nelson, Tracie R. Jackson
2020, Scientific Investigations Report 2020-5103
Declining water levels and reduced natural discharge at springs, seeps, and phreatophyte areas primarily are the result of decades of groundwater development in the Death Valley regional flow system, in Nevada and California. A calibrated groundwater-flow model was used to simulate potential future effects of groundwater pumping on water levels...
Simulated estuary-wide response of seagrass (Zostera marina) to future scenarios of temperature and sea level
Cara Scalpone, Jessie Jarvis, James Vasslides, Jeremy Testa, Neil K. Ganju
2020, Frontiers in Marine Science (7)
Seagrass communities are a vital component of estuarine ecosystems, but are threatened by projected sea level rise (SLR) and temperature increases with climate change. To understand these potential effects, we developed a spatially explicit model that represents seagrass (Zostera marina) habitat and estuary-wide productivity for Barnegat Bay-Little Egg...
Sensitivity of storm response to antecedent topography in the XBeach model
Rangley C. Mickey, P. Soupy Dalyander, Robert T. McCall, Davina L. Passeri
2020, Journal of Marine Science and Engineering (8)
Antecedent topography is an important aspect of coastal morphology when studying and forecasting coastal change hazards. The uncertainty in morphologic response of storm-impact models and their use in short-term hazard forecasting and decadal forecasting is important to account for when considering a coupled model framework. This study...
An interactive data visualization framework for exploring geospatial environmental datasets and model predictions
Jeffrey D. Walker, Benjamin Letcher, Kirk D. Rodgers, Clint C. Muhlfeld, Vincent S. D’Angelo
2020, Water (12)
With the rise of large-scale environmental models comes new challenges for how we best utilize this information in research, management and decision making. Interactive data visualizations can make large and complex datasets easier to access and explore, which can lead to knowledge discovery, hypothesis formation and improved...
Modeling population dynamics with count data
Marc Kery, J. Andrew Royle
2020, Book chapter, Applied hierarchical modeling in ecology: Analysis of distribution, abundance and species richness in R and BUGS
In this chapter, we describe models of open populations that are subject to change over time due to additions and subtractions. Additions may be in the form of recruitment and immigration, and subtractions may be in the form of mortality, emigration, or both. Conceptually, these models are described by the...
Modeling false positives
Marc Kery, J. Andrew Royle
2020, Book chapter, Applied hierarchical modeling in ecology: Analysis of distribution, abundance and species richness in R and BUGS
Many of the models we are concerned with included explicit descriptions of false negative errors. However, false positive errors can also be commin in practice, especially in citizen science applications where observer skill is highly variable. In addition, new methods which determine detection based on statistical classification or machine learning...
Diurnal timing of nonmigratory movement by birds: The importance of foraging spatial scales
Julie M. Mallon, Marlee A. Tucker, Annalea Beard, Richard O Bierregaard, Keith L. Bildstein, Katrin Böhning-Gaese, John N. Brzorad, Evan R. Buechley, Javier Bustamante, Carlos Carrapato, Jose Alfredo Castillo-Guerrero, Elizabeth Clingham, Mark Desholm, Christopher R. DeSorbo, Robert Domenech, Hayley Douglas, Olivier Duriez, Peter Enggist, Nina Farwig, Wolfgang Fiedler, Anna Gagliardo, Clara García‐Ripollés, Jose Antonio Gil Gallus, Morgan E. Gilmour, Roi Harel, Autumn-Lynn Harrison, Leeann Henry, Todd E. Katzner, Roland Kays, Erik Kleyheeg, Rubén Limiñana, Pascual Lopez-Lopez, Giuseppe Lucia, Alan Maccarone, Egidio Mallia, Ugo Mellone, E.K. Mojica, Ran Nathan, Scott H. Newman, Steffen Oppel, Yotam Orchan, Diann J. Prosser, Hannah Riley, Sascha Rösner, Dana G. Schabo, Holger Schulz, Scott A. Shaffer, Adam Shreading, João Paulo Silva, Jolene Sim, Henrik Skov, Orr Spiegel, Matthew J. Stuber, John Y. Takekawa, Vicente Urios, Javier Vidal-Mateo, Kevin Warner, Bryan D. Watts, Nicola Weber, Sam Weber, Martin Wikelski, Ramunas Zydelis, Thomas Mueller, William F. Fagan
2020, Journal of Avian Biology (51)
Timing of activity can reveal an organism's efforts to optimize foraging either by minimizing energy loss through passive movement or by maximizing energetic gain through foraging. Here, we assess whether signals of either of these strategies are detectable in the timing of activity of daily, local movements by birds. We...
Modeling three-dimensional flow over spur-and-groove morphology
Renan da Silva, Curt D. Storlazzi, Justin S. Rogers, Johan Reyns, Robert T. McCall
2020, Coral Reefs (39) 1841-1858
Spur-and-groove (SAG) morphology characterizes the fore reef of many coral reefs worldwide. Although the existence and geometrical properties of SAG have been well documented, an understanding of the hydrodynamics over them is limited. Here, the three-dimensional flow patterns over SAG formations, and a sensitivity of those...
Modeling population dynamics with multinomial count data
J. Andrew Royle, Marc Kery
2020, Book chapter, Applied hierarchical modeling in ecology: Analysis of distribution, abundance and species richness in R and BUGS
No abstract available....
Injection‐induced earthquakes near Milan, Kansas, controlled by Karstic Networks
Charlene Joubert, Reza Sohrabi, Justin L. Rubinstein, Gunnar Jansen, Stephen A Miller
2020, Geophysical Research Letters (47)
Induced earthquakes from waste disposal operations in otherwise tectonically stable regions significantly increases seismic hazard. It remains unclear why injections induce large earthquakes on non‐optimally oriented faults kilometers below the injection horizon, particularly since fluids are not injected under pressure, but rather poured, into the well as...
Application of the RSPARROW modeling tool to estimate total nitrogen sources to streams and evaluate source reduction management scenarios in the Grande River Basin, Brazil
Matthew P. Miller, Marcelo L de Souza, Richard B Alexander, Lillian E. Gorman Sanisaca, Alexandre de Amorim Teixeira, Alison P. Appling
2020, Water (12)
Large-domain hydrological models are increasingly needed to support water-resource assessment and management in large river basins. Here, we describe results for the first Brazilian application of the SPAtially Referenced Regression On Watershed attributes (SPARROW) model using a new open-source modeling and interactive decision support system tool (RSPARROW) to quantify the...
From pools to flow: The PROMISE framework for new insights on soil carbon cycling in a changing world
Bonnie G. Waring, Benjamin N. Sulman, Sasha C. Reed, A. Peyton Smith, Colin Averill, Courtney Creamer, Daniela F. Cusack, Steven J. Hall, Julie Jastrow, Kenneth M. Kemner, Markus Kleber, Xiao-Jun Allen Liu, Jennifer Pett-Ridge, Marjorie S. Schulz
2020, Global Change Biology (26) 6631-6643
Soils represent the largest terrestrial reservoir of organic carbon, and the balance between soil organic carbon (SOC) formation and loss will drive powerful carbon‐climate feedbacks over the coming century. To date, efforts to predict SOC dynamics have rested on pool‐based models, which assume classes of SOC with internally homogenous physicochemical...
Delineation of flood-inundation areas in Grapevine Canyon near Scotty’s Castle, Death Valley National Park, California
Christopher M. Morris, Toby L. Welborn, J. Toby Minear
2020, Scientific Investigations Report 2020-5082
On October 18, 2015, a large flood caused considerable damage in Grapevine Canyon near Death Valley Scotty Historic District, in Death Valley National Park, California. Significant channel changes had limited the applicability of previously created flood-inundation maps to current conditions. Predicted flood-inundation maps for Scotty’s Castle were updated using one-dimensional...
A comparison of the CMIP6 midHolocene and lig127k simulations in CESM2
Bette L. Otto-Bliesner, Esther C. Brady, Robert A Tomas, Samuel Albani, Patrick J. Bartlein, Natalie M Mahowald, Sarah Shafer, Erik Kluzek, Peter J Lawrence, Gunter Leguy, Matthew Rothstein, Aleah Sommers
2020, Paleoceanography and Paleoclimatology (35)
Results are presented and compared for the Community Earth System Model version 2 (CESM2) simulations of the middle Holocene (MH, 6 ka) and Last Interglacial (LIG, 127 ka). These simulations are designated as Tier 1 experiments (midHolocene and lig127k) for the Coupled Model Intercomparison Project phase 6 (CMIP6) and the Paleoclimate Modeling Intercomparison Project...
Variables affecting resource subsidies from streams and rivers to land and their susceptibility to global change stressors
Jeffrey Muehlbauer, Stefano Larsen, Micael Jonsson, Erik J.S. Emilson
2020, Book chapter, Contaminants and ecological subsidies
Stream and river ecosystems provide subsidies of emergent adult aquatic insects and other resources to terrestrial food webs, and this lotic–land subsidy has garnered much attention in recent research. Here, we critically examine a list of biotic and abiotic variables—including productivity, dominant taxa, geomorphology, and weather—that should be...
Synthesis: A framework for predicting the dark side of ecological subsidies
Johanna M. Kraus, Jeff Wessner, David Walters
2020, Book chapter, Contaminants and ecological subsidies
In this chapter, we synthesize the state of the science regarding ecological subsidies and contaminants at the land-water interface and suggest research and management approaches for linked freshwater-terrestrial ecosystems. Specifically, we focus on movements of animals with complex life histories and the detrital inputs associated with animal and...
