Suppression of invasive lake trout in an isolated backcountry lake in Glacier National Park
C. R. Fredenberg, Clint C. Muhlfeld, Christopher S. Guy, Vincent S. D'Angelo, Christopher C. Downs, John M. Syslo
2017, Fisheries Management and Ecology (24) 33-48
Fisheries managers have implemented suppression programmes to control non-native lake trout, Salvelinus namaycush (Walbaum), in several lakes throughout the western United States. This study determined the feasibility of experimentally suppressing lake trout using gillnets in an isolated backcountry lake in Glacier National Park, Montana, USA, for the conservation of threatened...
Comparison of in vitro estrogenic activity and estrogen concentrations insource and treated waters from 25 U.S. drinking water treatment plants
Justin M. Conley, Nicola Evans, Heath Mash, Laura Rosenblum, Kathleen Schenck, Susan Glassmeyer, Edward T. Furlong, Dana W. Kolpin, Vickie S. Wilson
2017, Science of the Total Environment (579) 1610-1617
In vitro bioassays have been successfully used to screen for estrogenic activity in wastewater and surface water, however, few have been applied to treated drinking water. Here, extracts of source and treated water samples were assayed for estrogenic activity using T47D-KBluc cells and analyzed by liquid chromatography-Fourier transform mass spectrometry (LC-FTMS) for natural...
Merging paleobiology with conservation biology to guide the future of terrestrial ecosystems
Anthony D. Barnosky, Elizabeth A. Hadly, Jason Head, Patrick Gonzalez, P. David Polly, A. Michelle Lawing, Jussi T. Eronen, David D. Ackerly, Ken Alex, Eric Biber, Jessica L. Blois, Justin Brashares, Gerardo Ceballos, Edward Davis, Gregory P. Dietl, Rodolfo Dirzo, Holly Doremus, Mikael Fortelius, Harry W. Greene, Jessica Hellmann, Thomas Hickler, Stephen T. Jackson, Melissa Kemp, Paul L. Koch, Claire Kremen, Emily L. Lindsey, Cindy Looy, Charles R. Marshall, Chase Mendenhall, Andreas Mulch, Alexis M. Mychajliw, Carsten Nowak, Uma Ramakrishnan, Jan Schnitzler, Kashish Das Shrestha, Katherine Solari, Lynn Stegner, M. Allison Stegner, Nils Chr. Stenseth, Marvalee H. Wake, Zhibin Zhang
2017, Science (355) 1-10
The current impacts of humanity on nature are rapid and destructive, but species turnover and change have occurred throughout the history of life. Although there is much debate about the best approaches to take in conservation, ultimately, we need to permit or enhance the resilience of natural systems so that...
Fish and invertebrate flow-biology relationships to support the determination of ecological flows for North Carolina
Jennifer Phelan, Thomas F. Cuffney, Lauren A. Patterson, Michele Eddy, Robert Dykes, Sam Pearsall, Chris Goudreau, Jim Mead, Fred Tarver
2017, Journal of the American Water Resources Association (53) 42-55
A method was developed to characterize fish and invertebrate responses to flow alteration in the state of North Carolina. This method involved using 80th percentile linear quantile regressions to relate six flow metrics to the diversity of riffle-run fish and benthic Ephemeroptera, Plecoptera, and Trichoptera (EPT) richness. All twelve flow-biology...
Temporal expansion of annual crop classification layers for the CONUS using the C5 decision tree classifier
Aaron M. Friesz, Bruce K. Wylie, Daniel M. Howard
2017, Remote Sensing Letters (8) 389-398
Crop cover maps have become widely used in a range of research applications. Multiple crop cover maps have been developed to suite particular research interests. The National Agricultural Statistics Service (NASS) Cropland Data Layers (CDL) are a series of commonly used crop cover maps for the conterminous United States (CONUS)...
Tidal triggering of earthquakes suggests poroelastic behavior on the San Andreas Fault
Andrew Delorey, Nicholas van der Elst, Paul Johnson
2017, Earth and Planetary Science Letters (460) 164-170
Tidal triggering of earthquakes is hypothesized to provide quantitative information regarding the fault's stress state, poroelastic properties, and may be significant for our understanding of seismic hazard. To date, studies of regional or global earthquake catalogs have had only modest successes in identifying tidal triggering. We posit that the smallest...
Population genetics and demography unite ecology and evolution
Winsor H. Lowe, Ryan Kovach, Fred W. Allendorf
2017, Trends in Ecology and Evolution (32) 141-152
The interplay of ecology and evolution has been a rich area of research for decades. A surge of interest in this area was catalyzed by the observation that evolution by natural selection can operate at the same contemporary timescales as ecological dynamics. Specifically, recent eco-evolutionary...
Annual changes in seasonal river water temperatures in the eastern and western United States
Tyler Wagner, Stephen R. Midway, Joanna B. Whittier, Jefferson T. DeWeber, Craig P. Paukert
2017, Water (9)
Changes in river water temperatures are anticipated to have direct effects on thermal habitat and fish population vital rates, and therefore, understanding temporal trends in water temperatures may be necessary for predicting changes in thermal habitat and how species might respond to such changes. However, many investigations into trends in...
Dynamic strains for earthquake source characterization
Andrew J. Barbour, Brendan W. Crowell
2017, Seismological Research Letters (88) 354-370
Strainmeters measure elastodynamic deformation associated with earthquakes over a broad frequency band, with detection characteristics that complement traditional instrumentation, but they are commonly used to study slow transient deformation along active faults and at subduction zones, for example. Here, we analyze dynamic strains at Plate Boundary Observatory (PBO) borehole strainmeters...
The importance of quality control in validating concentrationsof contaminants of emerging concern in source and treateddrinking water samples
Angela L. Batt, Edward T. Furlong, Heath E. Mash, Susan T. Glassmeyer, Dana W. Kolpin
2017, Science of the Total Environment (579) 1618-1628
A national-scale survey of 247 contaminants of emerging concern (CECs), including organic and inorganic chemical compounds, andmicrobial contaminants, was conducted in source and treated drinkingwater samples from 25 treatment plants across the United States.Multiplemethodswere used to determine these CECs, including six analytical methods tomeasure 174 pharmaceuticals, personal care products, and pesticides. A three-component quality...
Predicting animal home-range structure and transitions using a multistate Ornstein-Uhlenbeck biased random walk
Greg A. Breed, Emily A. Golson, M. Tim Tinker
2017, Ecology (98) 32-47
The home‐range concept is central in animal ecology and behavior, and numerous mechanistic models have been developed to understand home range formation and maintenance. These mechanistic models usually assume a single, contiguous home range. Here we describe and implement a simple home‐range model that can accommodate multiple...
Hard choices in assessing survival past dams — a comparison of single- and paired-release strategies
Joseph D. Zydlewski, Daniel S. Stich, Douglas B. Sigourney
2017, Canadian Journal of Fisheries and Aquatic Sciences (74) 178-190
Mark–recapture models are widely used to estimate survival of salmon smolts migrating past dams. Paired releases have been used to improve estimate accuracy by removing components of mortality not attributable to the dam. This method is accompanied by reduced precision because (i) sample size is reduced relative to a single,...
Multi-year microbial source tracking study characterizing fecal contamination in an urban watershed
Rebecca N. Bushon, Amie M.G. Brady, Eric D. Christensen, Erin A. Stelzer
2017, Water Environment Research (89) 127-143
Microbiological and hydrological data were used to rank tributary stream contributions of bacteria to the Little Blue River in Independence, Missouri. Concentrations, loadings and yields of E. coli and microbial source tracking (MST) markers, were characterized during base flow and storm events in five subbasins within Independence, as well as...
Expanding the role of reactive transport models in critical zone processes
Li Li, Kate Maher, Alexis Navarre-Sitchler, Jennifer Druhan, Christof Meile, Corey Lawrence, Joel Moore, Julia Perdrial, Pamela Sullivan, Aaron Thompson, Lixin Jin, Edward W. Bolton, Susan L. Brantley, William E. Dietrich, K. Ulrich Mayer, Carl Steefel, Albert J. Valocchi, John M. Zachara, Benjamin D. Kocar, Jennifer McIntosh, Benjamin M. Tutolo, Mukesh Kumar, Eric Sonnenthal, Chen Bao, Joe Beisman
2017, Earth-Science Reviews (165) 280-301
Models test our understanding of processes and can reach beyond the spatial and temporal scales of measurements. Multi-component Reactive Transport Models (RTMs), initially developed more than three decades ago, have been used extensively to explore the interactions of geothermal, hydrologic, geochemical, and geobiological processes in subsurface systems. Driven by extensive...
Tools for mapping ecosystem services
Ignacio Palomo, Mihai Adamescu, Kenneth J. Bagstad, Constantin Cazacu, Hermann Klug, Stoyan Nedkov
Benjamin Burkhard, Joachim Maes, editor(s)
2017, Book chapter, Mapping ecosystem services
Mapping tools have evolved impressively in recent decades. From early computerised mapping techniques to current cloud-based mapping approaches, we have witnessed a technological evolution that has facilitated the democratisation of Geographic Information Systems (GIS). These advances have impacted multiple disciplines including ecosystem service (ES) mapping. The information that feeds different mapping tools...
A discrete stage-structured model of California newt population dynamics during a period of drought
Marjorie T. Jones, William R. Milligan, Lee B. Kats, Thomas L. Vandergon, Rodney L. Honeycutt, Robert N. Fisher, Courtney L. Davis, Timothy A. Lucas
2017, Journal of Theoretical Biology (414) 245-253
We introduce a mathematical model for studying the population dynamics under drought of the California newt (Taricha torosa), a species of special concern in the state of California. Since 2012, California has experienced a record-setting drought, and multiple studies predict drought conditions currently underway will persist and even increase in...
Rainfall-runoff of anthropogenic waste indicators from agricultural fields applied with municipal biosolids
James L. Gray, Thomas Borch, Edward T. Furlong, Jessica Davis, Tracy Yager, Yun-Ya Yang, Dana W. Kolpin
2017, Science of the Total Environment (580) 83-89
The presence of anthropogenic contaminants such as antimicrobials, flame-retardants, and plasticizers in runoff from agricultural fields applied with municipal biosolids may pose a potential threat to the environment. This study assesses the potential for rainfall-induced runoff of 69 anthropogenic waste indicators (AWIs), widely found in household and industrial products, from...
Using diurnal temperature signals to infer vertical groundwater-surface water exchange
Dylan J. Irvine, Martin A. Briggs, Laura K. Lautz, Ryan P. Gordon, Jeffrey M. McKenzie, Ian Cartwright
2017, Groundwater (55) 10-26
Heat is a powerful tracer to quantify fluid exchange between surface water and groundwater. Temperature time series can be used to estimate pore water fluid flux, and techniques can be employed to extend these estimates to produce detailed plan-view flux maps. Key advantages of heat tracing include cost-effective sensors and...
Prior knowledge-based approach for associating contaminants with biological effects: A case study in the St. Croix River basin, MN, WI, USA
Anthony L. Schroeder, Dalma Martinovic-Weigelt, Gerald T. Ankley, Kathy Lee, Natalia Garcia-Reyero, Edward J. Perkins, Heiko L. Schoenfuss, Daniel L. Villeneuve
2017, Environmental Pollution (221) 427-436
Evaluating potential adverse effects of complex chemical mixtures in the environment is challenging. One way to address that challenge is through more integrated analysis of chemical monitoring and biological effects data. In the present study, water samples from five locations near two municipal wastewater treatment plants in the St. Croix...
Integration of genetic and demographic data to assess population risk in a continuously distributed species
Bradley C. Fedy, Jeffery R. Row, Sara J. Oyler-McCance
2017, Conservation Genetics (18) 89-104
The identification and demographic assessment of biologically meaningful populations is fundamental to species’ ecology and management. Although genetic tools are used frequently to identify populations, studies often do not incorporate demographic data to understand their respective population trends. We used genetic data to define subpopulations in a continuously distributed...
Modeling strong‐motion recordings of the 2010 Mw 8.8 Maule, Chile, earthquake with high stress‐drop subevents and background slip
Arthur D. Frankel
2017, Bulletin of the Seismological Society of America (107) 372-386
Strong‐motion recordings of the Mw 8.8 Maule earthquake were modeled using a compound rupture model consisting of (1) a background slip distribution with large correlation lengths, relatively low slip velocity, and long peak rise time of slip of about 10 s and (2) high stress‐drop subevents (asperities) on the deeper portion of the rupture...
Critical zone properties control the fate of nitrogen during experimental rainfall in montane forests of the Colorado Front Range
Eve-Lyn S. Hinckley, Brian A. Ebel, Rebecca T. Barnes, Sheila F. Murphy, Suzanne P. Anderson
2017, Biogeochemistry (132) 213-231
Several decades of research in alpine ecosystems have demonstrated links among the critical zone, hydrologic response, and the fate of elevated atmospheric nitrogen (N) deposition. Less research has occurred in mid-elevation forests, which may be important for retaining atmospheric N deposition. To explore the fate of N in the montane...
Compartmentalization of the Coso East Flank geothermal field imaged by 3-D full-tensor MT inversion
Nathaniel J. Lindsey, J. Ole Kaven, Nicholas C. Davatzes, Gregory A. Newman
2017, Geophysical Journal International (208) 652-662
Previous magnetotelluric (MT) studies of the high-temperature Coso geothermal system in California identified a subvertical feature of low resistivity (2–5 Ohm m) and appreciable lateral extent (>1 km) in the producing zone of the East Flank field. However, these models could not reproduce gross 3-D effects in the recorded data. We perform...
Relations between some horizontal‐component ground‐motion intensity measures used in practice
David Boore, Tadahiro Kishida
2017, Bulletin of the Seismological Society of America (107) 334-343
Various measures using the two horizontal components of recorded ground motions have been used in a number of studies that derive ground‐motion prediction equations and construct maps of shaking intensity. We update relations between a number of these measures, including those in Boore et al. (2006) and Boore (2010), using the large...
Terrestrial ecosystem model performance in simulating productivity and its vulnerability to climate change in the northern permafrost region
Jianyang Xia, A. David McGuire, David Lawrence, Eleanor J. Burke, Guangsheng Chen, Xiaodong Chen, Christine Delire, Charles Koven, Andrew MacDougall, Shushi Peng, Annette Rinke, Kazuyuki Saito, Wenxin Zhang, Ramdane Alkama, Theodore J. Bohn, Philippe Ciais, Bertrand Decharme, Isabelle Gouttevin, Tomohiro Hajima, Daniel J. Hayes, Kun Huang, Duoying Ji, Gerhard Krinner, Dennis P. Lettenmaier, Paul A. Miller, John C. Moore, Benjamin Smith, Tetsuo Sueyoshi, Zheng Shi, Liming Yan, Junyi Liang, Lifen Jiang, Qian Zhang, Yiqi Luo
2017, Journal of Geophysical Research: Biogeosciences (122) 430-446
Realistic projection of future climate-carbon (C) cycle feedbacks requires better understanding and an improved representation of the C cycle in permafrost regions in the current generation of Earth system models. Here we evaluated 10 terrestrial ecosystem models for their estimates of net primary productivity (NPP) and responses to historical climate...
