Imidacloprid sorption and transport in cropland, grass buffer and riparian buffer soils
Laura E. Satkowski, Keith W. Goyne, Stephen H. Anderson, Robert N. Lerch, Craig R. Allen, Daniel D. Snow
2018, Vadose Zone Journal (17) 1-12
An understanding of neonicotinoid sorption and transport in soil is critical for determining and mitigating environmental risk associated with the most widely used class of insecticides. The objective of this study was to evaluate mobility and transport of the neonicotinoid imidacloprid (ICD) in soils collected from cropland, grass vegetative buffer...
Shoal bass hybridization in the Chattahoochee River Basin near Atlanta, Georgia
Andrew T. Taylor, Michael D. Tringali, Patrick M. O’Rourke, James M. Long
2018, Journals of the Southeastern Association of Fish and Wildlife Agencies (5) 1-9
The shoal bass (Micropterus cataractae) is a sportfish endemic to the Apalachicola-Chattahoochee-Flint Basin of the southeastern United States. Introgression with several non-native congeners poses a pertinent threat to shoal bass conservation, particularly in the altered habitats of the Chattahoochee River. Our primary objective was to characterize hybridization in shoal bass...
Ecological neighborhoods as a framework for umbrella species selection
Erica F. Stuber, Joseph J. Fontaine
2018, Biological Conservation (223) 112-119
Umbrella species are typically chosen because they are expected to confer protection for other species assumed to have similar ecological requirements. Despite its popularity and substantial history, the value of the umbrella species concept has come into question because umbrella species chosen using heuristic methods, such as body or home...
Assessing rockfall susceptibility in steep and overhanging slopes using three-dimensional analysis of failure mechanisms
Battista Matasci, Greg M. Stock, Michael Jaboyedoff, Dario Carrea, Brian D. Collins, Antoine Guerin, G. Matasci, L. Ravanel
2018, Landslides (15) 859-878
Rockfalls strongly influence the evolution of steep rocky landscapes and represent a significant hazard in mountainous areas. Defining the most probable future rockfall source areas is of primary importance for both geomorphological investigations and hazard assessment. Thus, a need exists to understand which areas of a steep cliff are more...
Ecosystem thresholds, tipping points, and critical transitions
Seth M. Munson, Sasha C. Reed, Josep Penuelas, Nathan G. McDowell, Osvaldo E. Sala
2018, New Phytologist (218) 1315-1317
Abrupt shifts in ecosystems are cause for concern and will likelyintensify under global change (Scheffer et al., 2001). The terms‘thresho lds’, ‘tipping points’, and ‘critical transitions’ have beenused interchangeably to refer to sudden changes in the integrityor state of an ecosystem caused by environmental drivers(Holling, 1973; May, 1977). Threshold-based concepts...
Effects of turbidity, sediment, and polyacrylamide on native freshwater mussels
Sean B. Buczek, W. Gregory Cope, Richard A. McLaughlin, Thomas J. Kwak
2018, Journal of the American Water Resources Association (54) 631-643
Turbidity is a ubiquitous pollutant adversely affecting water quality and aquatic life in waterways globally. Anionic polyacrylamide (PAM) is widely used as an effective chemical flocculent to reduce suspended sediment (SS) and turbidity. However, no information exists on the toxicity of PAM‐flocculated sediments to imperiled, but ecologically important, freshwater mussels...
Effects of summer air exposure on the survival of caught-and-released salmonids
Curtis J. Roth, Daniel J. Schill, Michael Quist, Brett High
2018, North American Journal of Fisheries Management (38) 886-895
Despite the success of catch‐and‐release regulations, exposing fish to air during release has emerged as a growing concern over the past two decades. We evaluated the effect of air exposure during midsummer on survival of Yellowstone Cutthroat Trout Oncorhynchus clarkii bouvieri, Bull Trout Salvelinus confluentus, and Rainbow Trout O. mykiss exposed to catch‐and‐release angling....
A guide to Bayesian model checking for ecologists
Paul B. Conn, Devin S. Johnson, Perry J. Williams, Sharon R. Melin, Mevin Hooten
2018, Ecological Monographs (88) 526-542
Checking that models adequately represent data is an essential component of applied statistical inference. Ecologists increasingly use hierarchical Bayesian statistical models in their research. The appeal of this modeling paradigm is undeniable, as researchers can build and fit models that embody complex ecological processes while simultaneously accounting for observation error....
Probabilistic measures of climate change vulnerability, adaptation action benefits, and related uncertainty from maximum temperature metric selection
Jefferson T. DeWeber, Tyler Wagner
2018, Global Change Biology (24) 2735-2748
Predictions of the projected changes in species distributions and potential adaptation action benefits can help guide conservation actions. There is substantial uncertainty in projecting species distributions into an unknown future, however, which can undermine confidence in predictions or misdirect conservation actions if not properly considered. Recent studies have shown that...
Differences in vitellogenin production between laboratory raised and wild fathead minnows: Potential consequences for understanding estrogenic exposure in wild
Jordan R. Anderson, Dana L. Winkelman
2018, Integrated Environmental Assessment and Management (14) 5-6
No abstract available....
Carboniferous climate teleconnections archived in coupled bioapatite δ18OPO4 and 87Sr/86Sr records from the epicontinental Donets Basin, Ukraine
Isabel P. Montanez, Dillon J. Osleger, J.-H. Chen, Barbara E. Wortham, Robert G. Stamm, Tamara I. Nemyrovska, Julie M. Griffin, Vladislav I. Poletaev, Bruce R. Wardlaw
2018, Earth and Planetary Science Letters (492) 89-101
Reconstructions of paleo-seawater chemistry are largely inferred from biogenic records of epicontinental seas. Recent studies provide considerable evidence for large-scale spatial and temporal variability in the environmental dynamics of these semi-restricted seas that leads to the decoupling of epicontinental isotopic records from those of the open ocean. We present conodont...
Preliminary synthesis and assessment of environmental flows in the middle Verde River watershed, Arizona
Nicholas V. Paretti, Anne M. D. Brasher, Susanna L. Pearlstein, Dena M. Skow, Bruce Gungle, Bradley D. Garner
2018, Scientific Investigations Report 2017-5100
A 3-year study was undertaken to evaluate the suitability of the available modeling tools for characterizing environmental flows in the middle Verde River watershed of central Arizona, describe riparian vegetation throughout the watershed, and estimate sediment mobilization in the river. Existing data on fish and macroinvertebrates were analyzed in relation...
Science support for evaluating natural recovery of polychlorinated biphenyl concentrations in fish from Crab Orchard Lake, Crab Orchard National Wildlife Refuge, Illinois
Bethany K. Kunz, Jo Ellen Hinck, Robin D. Calfee, Greg L. Linder, Edward E. Little
2018, Open-File Report 2018-1006
IntroductionCrab Orchard Lake in southern Illinois is one of the largest and most popular recreational lakes in the state. Construction of the nearly 7,000-acre reservoir in the late 1930s created employment opportunities through the Works Progress Administration, and the lake itself was intended to supply water, control flooding, and provide...
Biological responses of Crested and Least auklets to volcanic destruction of nesting habitat in the Aleutian Islands, Alaska
Gary S. Drew, John F. Piatt, Jeffrey C. Williams
2018, The Auk (135) 477-485
Crested Auklets (Aethia cristatella) and Least Auklets (A. pusilla) are crevice-nesting birds that breed in large mixed colonies at relatively few sites in the Aleutian Island archipelago, Bering Sea, Gulf of Alaska, and Sea of Okhotsk. Many of these colonies are located on active volcanic islands. The eruption of Kasatochi...
Hydrologic characteristics of freshwater mussel habitat: novel insights from modeled flows
C. Ashton Drew, Michele Eddy, Thomas J. Kwak, W. Gregory Cope, Tom Augspurger
2018, Freshwater Science (37) 343-356
The ability to model freshwater stream habitat and species distributions is limited by the spatially sparse flow data available from long-term gauging stations. Flow data beyond the immediate vicinity of gauging stations would enhance our ability to explore and characterize hydrologic habitat suitability. The southeastern USA supports high aquatic biodiversity,...
Genome-wide analysis of SNPs is consistent with no domestic dog ancestry in the endangered Mexican Wolf (Canis lupus baileyi)
Robert R. Fitak, Sarah E. Rinkevich, Melanie Culver
2018, Journal of Heredity (109) 372-383
The Mexican gray wolf (Canis lupus baileyi) was historically distributed throughout the southwestern United States and northern Mexico. Extensive predator removal campaigns during the early 20th century, however, resulted in its eventual extirpation by the mid 1980s. At this time, the Mexican wolf existed only in 3 separate captive lineages...
Landscape‐level patterns in fawn survival across North America
Tess M. Gingery, Duane R. Diefenbach, Bret D. Wallingford, Christopher S. Rosenberry
2018, Journal of Wildlife Management (82) 1003-1013
A landscape‐level meta‐analysis approach to examining early survival of ungulates may elucidate patterns in survival not evident from individual studies. Despite numerous efforts, the relationship between fawn survival and habitat characteristics remains unclear and there has been no attempt to examine trends in survival across landscape types with adequate replication....
Respiratory disease, behavior, and survival of mountain goat kids
Julie A. Blanchong, Christopher A. Anderson, Nicholas J. Clark, Robert W. Klaver, Paul J. Plummer, Mike Cox, Caleb Mcadoo, Peregrine L. Wolff
2018, Journal of Wildlife Management (82) 1243-1251
Bacterial pneumonia is a threat to bighorn sheep (Ovis canadensis) populations. Bighorn sheep in the East Humboldt Mountain Range (EHR), Nevada, USA, experienced a pneumonia epizootic in 2009–2010. Testing of mountain goats (Oreamnos americanus) that were captured or found dead on this range during and after the epizootic detected bacteria...
Do postlarval amphidromous fishes transport marine‐derived nutrients and pollutants to Caribbean streams?
Augustin C. Engman, Thomas J. Kwak, W. Gregory Cope
2018, Ecology of Freshwater Fish (27) 847-856
Diadromous fishes are known biotransport vectors that can move nutrients, energy and contaminants in an upstream direction in lotic ecosystems. This function has been demonstrated repeatedly in anadromous salmonids, but the role of other diadromous species, especially tropical taxa, as biotransport vectors is less studied. Amphidromous fish species exhibit potential...
Surficial geologic map of the Dillingham quadrangle, southwestern Alaska
Frederic H. Wilson
2018, Scientific Investigations Map 3388
The geologic map of the Dillingham quadrangle in southwestern Alaska shows surficial unconsolidated deposits, many of which are alluvial or glacial in nature. The map area, part of Alaska that was largely not glaciated during the late Wisconsin glaciation, has a long history reflecting local and more distant glaciations. Late Wisconsin...
Spatial extent of analysis influences observed patterns of population genetic structure in a widespread darter species (Percidae)
Jane E. Argentina, Paul L. Angermeier, Eric M. Hallerman, Stuart A. Welsh
2018, Freshwater Biology (63) 1185-1198
Connectivity among stream fish populations allows for exchange of genetic material and helps maintain genetic diversity, adaptive potential and population stability over time. Changes in species demographics and population connectivity have the potential to permanently alter the genetic patterns of stream fish, although these changes through space and time...
Application and comparison of the MODIS-Derived Enhanced Vegetation Index (EVI) to VIIRS, Landsat 5 TM, and Landsat 8 OLI platforms: A case study in the arid Colorado River Delta, Mexico
Christopher Jarchow, Kamel Didan, Armando Barreto-Muñoz, Pamela L. Nagler, Edward P. Glenn
2018, Sensors (18)
The Enhanced Vegetation Index (EVI) is a key Earth science parameter used to assess vegetation, originally developed and calibrated for the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra and Aqua satellites. With the impending decommissioning of the MODIS sensors by the year 2020/2022, alternative platforms will need to be...
Inferring the absence of an incipient population during a rapid response for an invasive species
Amy A. Yackel Adams, Bjorn Lardner, Adam J Knox, Robert Reed
2018, PLoS ONE
Successful eradication of invasives is facilitated by early detection and prompt onset of control. However, realizing or verifying that a colonization has occurred is difficult for cryptic species especially at low population densities. Responding to the capture or unconfirmed sighting of a cryptic invasive species, and...
Long-term changes in soil and stream chemistry across an acid deposition gradient in the northeastern United States
Jason Siemion, Michael McHale, Gregory B. Lawrence, Douglas A. Burns, Michael R. Antidormi
2018, Journal of Environmental Quality (47) 410-418
Declines in acidic deposition across Europe and North America have led to decreases in surface water acidity and signs of chemical recovery of soils from acidification. To better understand the link between recovery of soils and surface waters, chemical trends in precipitation, soils, and streamwater were investigated in three watersheds...
Testing a two-scale focused conservation strategy for reducing phosphorus and sediment loads from agricultural watersheds
Rebecca Carvin, Laura W. Good, Faith A. Fitzpatrick, Curt Diehl, Katherine Songer, Kimberly J. Meyer, John C. Panuska, Steve Richter, Kyle Whalley
2018, Journal of Soil and Water Conservation (73) 298-309
This study tested a focused strategy for reducing phosphorus (P) and sediment loads in agricultural streams. The strategy involved selecting small watersheds identified as likely to respond relatively quickly, and then focusing conservation practices on high-contributing fields within those watersheds. Two 5,000 ha (12,360 ac) watersheds in the Driftless Area...
