Odds ratios and hurdle models: a long-term analysis of parasite infection patterns in endangered young-of-the-year suckers from Upper Klamath Lake, Oregon, USA
Douglas F. Markle, Andrew Janik, James T. Peterson, Anindo Choudhury, David C. Simon, Vasyl V. Tkach, Mark R. Terwilliger, Justin L. Sanders, Michael L. Kent
2020, International Journal for Parasitology (50) 315-330
We used odds ratios and a hurdle model to analyze parasite co-infections over 25 years on >20,000 young-of-the year of endangered Shortnose and Lost River Suckers. Host ecologies differed as did parasite infections. Shortnose Suckers were more likely to be caught inshore and 3–5 times more likely to have Bolbophorus spp. and Contracaecum sp. infections,...
Identifying areas of degrading and improving groundwater-quality conditions in the State of California, USA, 1974-2014
Bryant C. Jurgens, Miranda S. Fram, Jeffrey Rutledge, George L. V Bennett V
2020, Environmental Monitoring and Assessment (https://www.springer.com/journal/10661) (192)
Areas of improving and degrading groundwater-quality conditions in the State of California were assessed using spatial weighting of a new metric for scoring wells based on constituent concentrations and the direction and magnitude of a trend slope (Sen). Individual well scores were aggregated across 2135 equal-area grid cells covering the...
USGS Cascades Volcano Observatory news media management guide — General protocols and templates
Carolyn L. Mastin, Elizabeth G. Westby
2020, Circular 1462
This guide describes general protocols and provides templates for news media management at the U.S. Geological Survey (USGS) Cascades Volcano Observatory (CVO) and is intended for use by the CVO scientist-in-charge, communications staff, scientists, and guest communications colleagues. This public version, with CVO names and contact information removed, may be useful...
Human dimensions considerations in wildlife disease management
Kirsten Leong, Daniel J. Decker
Katherine L. D. Richgels, Samantha E.J. Gibbs, Margaret A. Wild, editor(s)
2020, Techniques and Methods 15-C8
In 1943, Aldo Leopold observed that the real problem of wildlife management is not how to handle wildlife, but how to manage humans. As with any other aspect of wildlife management, social sciences can improve understanding the human dimensions of wildlife disease management (WDM). Human activities have accelerated the emergence...
Low stand density moderates growth declines during hot droughts in semi-arid forests
Caitlin M. Andrews, Anthony W. D’Amato, Shawn Fraver, Brian Palik, Michael A. Battaglia, John B. Bradford
2020, Journal of Applied Ecology (57) 1089-1102
Increasing heat and aridity in coming decades is expected to negatively impact tree growth and threaten forest sustainability in dry areas. Maintaining low stand density has the potential to mitigate the negative effects of increasingly severe droughts by minimizing competitive intensity.However, the direct impact of stand density on the...
Quantifying background nitrate removal mechanisms in an agricultural watershed with contrasting subcatchment baseflow concentrations
Wesley O. Zell, Teresa B Culver, Ward E. Sanford, Jonathan L Goodall
2020, Journal of Environmental Quality (49) 392-403
Numerous studies have documented the linkages between agricultural nitrogen loads and surface water degradation. In contrast, potential water quality improvements due to agricultural best management practices are difficult to detect because of the confounding effect of background nitrate removal rates, as well as the groundwater-driven delay between land surface action...
Well predictive performance of play-wide and Subarea Random Forest models for Bakken productivity
Emil D. Attanasi, Philip A. Freeman, Tim Coburn
2020, Journal of Petroleum Science and Engineering (191)
In recent years, geologists and petroleum engineers have struggled to clearly identify the mechanisms that drive productivity in horizontal, hydraulically-fractured oil wells producing from the middle member of the Bakken formation. This paper fills a gap in the literature by showing how this play’s heterogeneity affects factors that drive well...
Sequential biodegradation of 1,2,4-trichlorobenzene at oxic-anoxic groundwater interfaces in model laboratory columns
Steven J. Chow, Michelle M. Lorah, Amar R. Wadhawan, Neal D. Durant, Edward J. Bouwer
2020, Journal of Contaminant Hydrology (231)
Halogenated organic solvents such as chlorobenzenes (CBs) are frequent groundwater contaminants due to legacy spills. When contaminated anaerobic groundwater discharges into surface water through wetlands and other transition zones, aeration can occur from various physical and biological processes at shallow depths, resulting in oxic-anoxic interfaces (OAIs). This study investigated the...
Electrofishing encounter probability, survival, and dispersal of stocked age-0 Muskellunge in Wisconsin lakes
Daniel J. Dembkowski, Janice A. Kerns, Emma G. Easterly, Daniel A. Isermann
2020, North American Journal of Fisheries Management (40) 383-393
Boat electrofishing is often used to sample age-0 Muskellunge Esox masquinongy for indexing recruitment or evaluating stocking success. However, electrofishing samples typically result in low CPUE, prompting concerns regarding whether catch rates reflect actual abundance or whether boat electrofishing is generally ineffective for capturing age-0 Muskellunge (i.e., if fish are not being...
40Ar/39Ar and U-Pb SIMS zircon ages of Ediacaran dikes from the Arabian-Nubian Shield of south Jordan
Hind Ghanem, Ryan J. McAleer, Ghaleb H. Jarrar, Mu’ayyad Al Hseinat, Martin Whitehouse
2020, Precambrian Research (434)
A spectacular feature of the Arabian-Nubian Shield (ANS) is the abundance of well-exposed and extensive Neoproterozoic dike swarms of multiple generations. These dikes are generally categorized into metamorphosed and unmetamorphosed post-orogenic dike swarms. The unmetamorphosed dikes in the northern ANS can be grouped into an old and young generations. We...
Genetic family reconstruction characterizes Lake Sturgeon use of newly constructed spawning habitat and larval dispersal
Robert D. Hunter, Edward F. Roseman, Nick M. Sard, Robin L. DeBruyne, Jinliang Wang, Kim T. Scribner
2020, Transactions of the American Fisheries Society (149) 266-283
Since 2004, seven spawning reefs have been constructed in the St. Clair–Detroit River system to remediate lost spawning habitat and increase recruitment of Lake Sturgeon Acipenser fulvescens . Assessment of management actions by collecting and enumerating eggs and larvae provided evidence of spawning Lake Sturgeon and survival of...
Implementation of a surface water extent model in Cambodia using cloud-based remote sensing
Christopher E. Soulard, Jessica J. Walker, Roy E. Petrakis
2020, Remote Sensing (12)
Mapping surface water over time provides the spatially explicit information essential for hydroclimatic research focused on droughts and flooding. Hazard risk assessments and water management planning also rely on accurate, long-term measurements describing hydrologic fluctuations. Stream gages are a common measurement tool used to better understand flow and inundation dynamics,...
Geologic map of Petroglyph National Monument and vicinity, Bernalillo County, New Mexico
Ren A. Thompson, Christine F. Chan, Amy K. Gilmer, Ralph R. Shroba
2020, Scientific Investigations Map 3447
This geologic map depicts and briefly describes geologic units underlying Petroglyph National Monument and immediately adjacent areas in Bernalillo County, New Mexico. The Monument is underlain dominantly by Quaternary basalts of the Albuquerque Volcanoes volcanic field, a series of basin-filling volcanic flows and associated vents from a monogenetic volcanic highland...
A within-season approach for detecting early crop stage of corn and soybean using high temporal and spatial resolution imagery
Feng Gao, Martha Anderson, Craig S. T. Daughtry, Arnon Karnieli, W. Dean Hively, William P. Kustas
2020, Remote Sensing of Environment (242)
Crop emergence is a critical stage for crop development and crop growth modeling. Mapping crop emergence using remote sensing data is challenging. Previous remote sensing phenology algorithms showed that crop stages could be detected around the V3-V4 (3 to 4 established leaves) vegetative stage. Traditional approaches have a strong assumption...
Mechanics of near-field deformation during co- and post-seismic shallow fault slip
Johanna Nevitt, Benjamin A. Brooks, Rufus D. Catchings, Mark Goldman, Todd Ericksen, Craig L. Glennie
2020, Scientific Reports (10)
Poor knowledge of how faults slip and distribute deformation in the shallow crust hinders efforts to mitigate hazards where faults increasingly intersect with the expanding global population at Earth’s surface. Here we analyze two study sites along the 2014 M 6.0 South Napa, California, earthquake rupture, each dominated by either...
Detecting commonality in multidimensional fish movement histories using sequence analysis
Michael R. Lowe, Christopher M. Holbrook, Darryl W. Hondorp
2020, Animal Biotelemetry (8)
BackgroundAcoustic telemetry, for tracking fish movement histories, is multidimensional capturing both spatial and temporal domains. Oftentimes, analyses of such data are limited to a single domain, one domain nested within the other, or ad hoc approaches that simultaneously consider both domains. Sequence analysis, on the other hand, offers...
Geochemical and mineralogical study of the Red Mountain porphyry copper-molybdenum deposit and vicinity, Santa Cruz County, Arizona
Maurice Chaffee
2020, Scientific Investigations Report 2019-5077
The Red Mountain porphyry copper-molybdenum deposit (Cu-Mo deposit or PCD) is located in the northern part of the Patagonia Mountains, Santa Cruz County, Arizona. Extensive core drilling has delineated a large, deep-seated, structurally intact mineral system that extends from the present surface to depths of more than 1,765 meters. This...
Minnesota landowners’ trust in their department of natural resources, salient values similarity and wildlife value orientations
Larry M. Gigliotti, Lily A. Sweikert, Louis Cornicelli, David C. Fulton
2020, Environment Systems and Decisions (40) 577-587
Due to extensive land conversion over the last century, much of the native prairie pothole ecosystem has been converted to agricultural or other human uses. The prairie pothole ecosystem is found in the northern plains of Iowa, Minnesota, South Dakota, North Dakota, and Montana. Because most of the land in...
Deglacial temperature controls on no-analog community establishment in the Great Lakes Region
David Fastovich, James M. Russell, Stephen Jackson, John W. Williams
2020, Quaternary Science Reviews (234)
Understanding the drivers of vegetation dynamics and no-analog communities in eastern North America is hampered by a scarcity of independent temperature indicators. We present a new branched glycerol dialkyl glycerol tetraether (brGDGT) temperature record from Bonnet Lake, Ohio (18 to 8 ka) and report uncertainty estimates based on Bayesian linear...
Linking landscape-scale conservation to regional and continental outcomes for a migratory species
Brady J. Mattsson, Jim H Devries, James A. Dubovsky, Darius J. Semmens, Wayne E. Thogmartin, Jonathan J. Derbridge, Laura Lopez-Hoffman
2020, Scientific Reports (10)
Land-use intensification on arable land is expanding and posing a threat to biodiversity and ecosystem services worldwide. We develop methods to link funding for avian breeding habitat conservation and management at landscape scales to equilibrium abundance of a migratory species at the continental scale. We apply...
Consequences of ignoring group association in spatial capture-recapture analysis
Richard Bischof, Pierre Dupont, Cyril Milleret, Joseph Chipperfield, J. Andrew Royle
2020, Wildlife Biology (2020)
Many models in population ecology, including spatial capture–recapture (SCR) models, assume that individuals are distributed and detected independently of one another. In reality, this is rarely the case – both antagonistic and gregarious relationships lead to non-independent spatial configurations, with territorial exclusion at one end of the spectrum and group-living...
A pheromone antagonist liberates female sea lamprey from a sensory trap to enable reliable communication
Tyler John Buchinger, Anne M Scott, Skye D. Fissette, Cory Brant, Mar Huertas, Ke Li, Nicholas S. Johnson, Weiming Li
2020, Proceedings of the National Academy of Sciences of the United States of America (117) 7284-7289
The evolution of male signals and female preferences remains a central question in the study of animal communication. The sensory trap model suggests males evolve signals that mimic cues used in nonsexual contexts and thus manipulate female behavior to generate mating opportunities. Much evidence supports the...
Physical characteristics and simulated transport of pallid sturgeon and shovelnose sturgeon eggs
Kimberly Chojnacki, Susannah O. Erwin, Amy E. George, James Candrl, Robert B. Jacobson, Aaron J. DeLonay
2020, Journal of Freshwater Ecology (35) 73-94
The imperiled pallid sturgeon (Scaphirhynchus albus) and closely related, but more common, shovelnose sturgeon (S. platorynchus) are believed to broadcast adhesive, demersal eggs in the current and over coarse substrate in turbid rivers of the North American midcontinent. It has been hypothesized that eggs settle immediately following fertilization, but field...
Map depicting susceptibility to landslides triggered by intense rainfall, Puerto Rico
K. Stephen Hughes, William H. Schulz
2020, Open-File Report 2020-1022
Landslides in Puerto Rico range from nuisances to deadly events. Centuries of agricultural and urban modification of the landscape have perturbed many already unstable hillsides on the tropical island. One of the main triggers of mass wasting on the island is the high-intensity rainfall that is associated with tropical atmospheric...
An overview of agent-based models in plant biology and ecology
Bo Zhang, Donald L. DeAngelis
2020, Annals of Botany (126) 539-557
Agent-based modeling (ABM) has become an established methodology in many areas of biology, ranging from the cellular to the ecological population and community levels. In plant science, two different scales have predominated in their use of ABM. One is the scale of populations and communities, through the modeling of collections...
