Landscape genetics reveal broad and fine‐scale population structure due to landscape features and climate history in the northern leopard frog (Rana pipiens) in North Dakota
Justin M. Waraniak, Justin D. L. Fisher, Kevin Purcell, David M. Mushet, Craig A. Stockwell
2019, Ecology and Evolution (9) 1041-1060
Prehistoric climate and landscape features play large roles structuring wildlife populations. The amphibians of the northern Great Plains of North America present an opportunity to investigate how these factors affect colonization, migration, and current population genetic structure. This study used 11 microsatellite loci to genotype 1,230 northern leopard frogs (Rana...
Potential toxicity of complex mixtures in surface waters from a nationwide survey of United States streams: Identifying in vitro bioactivities and causative chemicals
Brett R. Blackwell, Gerald T. Ankley, Paul M. Bradley, Keith A. Houck, Sergei S. Makarov, Alexander V. Medvedev, Joe Swintek, Daniel L. Villeneuve
2019, Environmental Science & Technology (53) 973-983
While chemical analysis of contaminant mixtures remains an essential component of environmental monitoring, bioactivity-based assessments using in vitro systems increasingly play a role in the detection of biological effects. Historically, in vitro assessments focused on a few biological pathways, e.g., aryl hydrocarbon receptor (AhR) or estrogen receptor (ER) activities. High-throughput...
Evidence for interactions among environmental stressors in the Laurentian Great Lakes
Sigrid D. P. Smith, David B. Bunnell, G.A. Burton Jr., Jan J. H. Ciborowski, Alisha D. Davidson, Caitlin E. Dickinson, Lauren A. Eaton, Peter C. Esselman, Mary Anne Evans, Donna R. Kashian, Nathan F. Manning, Peter B. McIntyre, Thomas F. Nalepa, Alicia Perez-Fuentetaja, Alan D. Steinman, Donald G. Uzarski, J. David Allan
2019, Ecological Indicators (101) 203-211
Co-occurrence of environmental stressors is ubiquitous in ecosystems, but cumulative effects are difficult to predict for effective indicator development. Individual stressors can amplify (synergies) or lessen (antagonisms) each other's impacts or have fully independent effects (additive). Here we use the Laurentian Great Lakes, where a multitude of stressors have been...
Paleocene–Eocene Thermal Maximum prolonged by fossil carbon oxidation
Shelby L. Lyons, Allison A. Baczynski, Tali L. Babila, Timothy J. Bralower, Elizabeth A. Hajek, Lee R. Kump, Ellen G. Polites, Jean Self-Trail, Sheila M. Trampush, Jamie R. Vornlocher, James C. Zachos, Katherine H. Freeman
2019, Nature Geoscience (12) 54-60
A hallmark of the rapid and massive release of carbon during the Palaeocene–Eocene Thermal Maximum is the global negative carbon isotope excursion. The delayed recovery of the carbon isotope excursion, however, indicates that CO2 inputs continued well after the initial rapid onset, although there is no consensus about the source of...
Evaluating response distances to develop buffer zones for staging terns
Melissa A. Althouse, Jonathan B. Cohen, Sarah M. Karpanty, Jeffrey A. Spendelow, Kayla L. Davis, Katherine C. Parsons, Cristin F. Luttazi
2019, Journal of Wildlife Management (83) 260-271
Buffer zones, calculated by flight‐initiation distance (FID), are often used to reduce anthropogenic disturbances to wildlife, but FID can vary significantly across life‐history stages. We examined the behavioral effect of potential natural (gulls and shorebirds) and anthropogenic (pedestrians) disturbance sources to staging roseate (Sterna dougallii) and common tern (S. hirundo)...
Comparing clustered sampling designs for spatially explicit estimation of population density
Joseph D. Clark
2019, Population Ecology (61) 93-101
Spatially explicit capture–recapture methods do not assume that animals have equal access to sampling devices (e.g., detectors), which allows for gaps in the sampling extent and nonuniform (e.g., clustered) sampling designs. However, the performance (i.e., relative root mean squared error [RRMSE], confidence interval coverage, relative bias and relative standard error)...
Allowable take of black vultures in the eastern United States
Guthrie S. Zimmerman, Brian A. Millsap, Michael L. Avery, John R. Sauer, Michael C. Runge, Kenneth D. Richkus
2019, Journal of Wildlife Management (83) 272-282
Black vultures (Coragyps atratus) have been increasing in density and expanding their range in the eastern United States since at least the 1960s. In many areas, their densities have increased to the level where they are causing damage to property and livestock and the number of requests for allowable take...
Estimating lake–climate responses from sparse data: An application to high elevation lakes
Kyle R. Christianson, Brett M. Johnson, Mevin Hooten, James Roberts
2019, Limnology and Oceanography (64) 1371-1385
Although many studies demonstrate lake warming, few document trends from lakes with sparse data. Diel and seasonal variability of surface temperatures limit conventional trend analyses to datasets with frequent repeated observations. Thus, remote lakes, including many high elevation lakes, are underrepresented in trend analyses. We used...
Challenges in Columbia River fisheries conservation: Response to Duda et al.
Brian K. Hand, Courtney G. Flint, Chris A. Frissell, Clint C. Muhlfeld, Shawn P. Devlin, Brian P. Kennedy, Robert L. Crabtree, Arthur McKee, Gordon Luikart, Jack A. Stanford
2019, Frontiers in Ecology and the Environment (17) 11-13
The salmonid fisheries of the Columbia River Basin (CRB) have enormous socioeconomic, cultural, and ecological importance to numerous diverse stakeholders (e.g., state, federal, tribal, nonprofit), and there are a wide array of opinions and perspectives on how these fisheries should be managed. Although we appreciate Duda et al.’s commentary, it...
Interspecific aggression among parapatric and sympatric songbirds on a tropical elevational gradient
Andy J. Boyce, Thomas E. Martin
2019, Behavioral Ecology (30) 541-547
Interspecific competition is hypothesized to be a strong force that sets species range limits and drives parapatric distributions of closely related species on tropical mountains. Yet, experimental evidence that competition drives spatial segregation of closely related species on elevational gradients is rare. To test whether competition limits elevational ranges...
Age-0 walleye Sander vitreus display length-dependent diet shift to piscivory
C. S. Uphoff, C. W. Schoenebeck, K. D. Koupal, Kevin L. Pope, W. W. Hoback
2019, Journal of Freshwater Ecology (34) 27-36
The ontogenetic diet shift to piscivory can be energetically beneficial for fish growth and allows larger, more energetically profitable prey to be consumed. A shift to piscivory may be easier for longer individuals within a cohort due to larger gape size, and an early shift is likely advantageous, potentially leading...
Changes in the active, dead, and dormant microbial community structure across a Pleistocene permafrost chronosequence
Alexander Burkert, Thomas A. Douglas, Mark Waldrop, Rachel Mackelprang
2019, Applied and Environmental Microbiology (85)
Permafrost hosts a community of microorganisms that survive and reproduce for millennia despite extreme environmental conditions such as water stress, subzero temperatures, high salinity, and low nutrient availability. Many studies focused on permafrost microbial community composition use DNA-based methods such as metagenomic and 16S rRNA gene sequencing. However, these methods...
The 12 November 2017 Mw 7.3 Ezgeleh–Sarpolzahab (Iran) earthquake and active tectonics of the Lurestan arc
Edwin Nissen, Abdolreza Ghods, Ezgi Karasozen, John R. Elliott, Wiliam D. Barnhart, Eric A. Bergman, Gavin P. Hayes, Mohammadreza Jamal-Reyhani, Majid Nemati, Fengzhou Tan, Wathiq Abdulnaby, Harley M. Benz, Mohammad P. Shahvar, Morteza Talebian, Ling Chen
2019, Journal of Geophysical Research: Solid Earth (124) 2124-2152
The 12 November 2017 Mw 7.3 Ezgeleh‐Sarpolzahab earthquake is the largest instrumentally recorded earthquake in the Zagros Simply Folded Belt by a factor of ∼10 in seismic moment. Exploiting local, regional, and teleseismic data and synthetic aperture radar interferometry imagery, we characterize the rupture, its aftershock sequence, background seismicity, and regional tectonics. The mainshock...
The 2018 rift eruption and summit collapse of Kilauea Volcano
Christina A. Neal, Steven Brantley, Loren Antolik, Janet Babb, Matthew K. Burgess, Michael Cappos, Jefferson Chang, Sarah Conway, Liliana G. Desmither, Peter Dotray, Tamar Elias, Pauline Fukunaga, Steven Fuke, Ingrid A. Johanson, Kevan Kamibayashi, James P. Kauahikaua, R. Lopaka Lee, S. Pekalib, Asta Miklius, Brian Shiro, Don Swanson, Patricia A. Nadeau, Michael H. Zoeller, P. Okubo, Carolyn Parcheta, Matthew R. Patrick, William Tollett, Frank A. Trusdell, Edward F. Younger, Emily K. Montgomery-Brown, Kyle R. Anderson, Michael P. Poland, Jessica L. Ball, Joseph A. Bard, Michelle L. Coombs, Hannah R. Dietterich, Christoph Kern, Weston Thelen, Peter Cervelli, Tim R. Orr, Bruce F. Houghton, Cheryl Gansecki, Richard Hazlett, Paul Lundgren, Angela K. Diefenbach, Allan Lerner, Greg Waite, Peter J. Kelly, Laura E. Clor, Cynthia Werner, Katherine Mulliken, Gary B. Fisher, David Damby
2019, Science (363) 367-374
In 2018, Kīlauea Volcano experienced its largest lower East Rift Zone (LERZ) eruption and caldera collapse in at least 200 years. After collapse of the Pu'u 'Ō'ō vent on 30 April, magma propagated downrift. Eruptive fissures opened in the LERZ on 3 May, eventually extending ~6.8 km. A...
The future is now: Amplicon sequencing and sequence capture usher in the conservation genomics era
Mariah Meek, Wesley Larson
2019, Molecular Ecology Resources (19) 795-803
The genomics revolution has initiated a new era of population genetics where genome-wide data are frequently used to understand complex patterns of population structure and selection. However, the application of genomic tools to inform management and conservation has been somewhat rare outside a few well studied...
Effect of permafrost thaw on plant and soil fungal community in the boreal forest: Does fungal community change mediate plant productivity response?
Ursel M.E Schütte, Jeremiah A. Henning, Yuzhen Ye, A. Bowling, James D. Ford, Helene Genet, Mark Waldrop, Merritt R. Turetsky, Jeffrey R. White, James D Bever
2019, Journal of Ecology (107) 1737-1752
Permafrost thaw is leading to rapid shifts in boreal ecosystem function. Permafrost thaw affects soil carbon turnover through changes in soil hydrology, however, the biotic mechanisms regulating plant community response remain elusive. Here, we measured the response of fungal community composition and soil nutrient content in an intact permafrost plateau...
Draft genome sequence of Picocystis strain ML cultivated from Mono Lake, California
Emily N Junkins, Blake W. Stamps, Frank A Corsetti, Ronald S. Oremland, John R. Spear, Bradley S. Stevenson
2019, Conference Paper, Microbiology Resource Announcements
The microscopic alga Picocystis sp. strain ML is responsible for recurrent algal blooms in Mono Lake, CA. This organism was characterized by only very little molecular data, despite its prominence as a primary producer in saline environments. Here, we report the draft genome sequence for Picocystis sp. strain ML based...
Simulating detection-censored movement records for home range analysis planning
L. S. Wszola, V.L. Simonsen, L. Corral, C. J. Chizinski, Joseph J. Fontaine
2019, Article
Home range estimation is an important analytical method; yet best practices for addressing the effects of spatial variation in detection probability on home range estimates remains elusive. We introduce the R package “DiagnoseHR,” simulation tools for assessing how variation in detection probability arising from landscape, animal behavior, and methodological processes...
Beneath the arctic greening: Will soils lose or gain carbon or perhaps a little of both?
Jennifer W. Harden, J.A. O’Donnell, K.A. Heckman, B.N. Sulman, C.D. Koven, C.L. Ping, G.J. Michaelson
2019, SOIL
Ecosystem shifts related to climate change are anticipated for the next decades to centuries based on a number of conceptual and experimentally derived models of plant structure and function. Belowground, the potential responses of soil systems are less well known. We used geochemical steady state models, soil density fractionation, and...
Factors influencing fish mercury concentrations in Iowa rivers
Nathan Mills, Michael J. Weber, Clay Pierce, Darcy Cashatt
2019, Ecotoxicology (29) 229-241
Fish mercury concentrations have received considerable attention due to human health implications. Fish mercury concentrations are variable within and among systems due to a suite of biotic and abiotic influences that vary among regions and are difficult to predict. Understanding factors associated with variability in fish...
Dynamic wildlife occupancy models using automated acoustic monitoring data
Cathleen Balantic, Therese M. Donovan
2019, Ecological Applications (29)
Automated acoustic monitoring of wildlife has been used to characterize populations of sound-producing species across large spatial scales. However, false negatives and false positives produced by automated detection systems can compromise the utility of these data for researchers and land managers, particularly for research programs endeavoring to describe colonization and...
Estimating river discharge with swath altimetry: A proof of concept using AirSWOT observations
Stephen Tuozzolo, Greg D. Lind, Brandon Overstreet, Joseph F. Mangano, Mark A Fonstad, M. Hagemann, R.P.M. Frasson, K Larnier, P.-A. Garambois, J. Monnier, M. Durand
2019, Geophysical Research Letters (46) 1459-1466
The forthcoming Surface Water and Ocean Topography (SWOT) satellite mission will provide global measurements of the free surface of large rivers, providing new opportunities for remote sensing‐derived estimates of river discharge in gaged and ungaged basins. SWOT discharge algorithms have been developed and benchmarked using synthetic data but remain untested...
Does incorporating gear selectivity during macroscale investigations of fish growth reduce size-selective sampling bias in parameter estimates?
Tyler Wagner, Yan Li
2019, Canadian Journal Fisheries and Aquatic Sciences (76) 2089-2101
Understanding of fish growth, the spatial variability in individual growth, and the potential drivers of such variability is a fundamental component of many ecological investigations. However, sampling gears are always size-selective, and this selectivity can result in biased parameter estimates that can lead to, for example, biased stock assessments that...
Clade 2.3.4.4 H5 North American highly pathogenic avian influenza viruses infect, but do not cause clinical signs in American Black Ducks (Anas rubripes)
Erica Spackman, Diann Prosser, Mary Pantin-Jackwood, Christopher B. Stephens, Alicia Berlin
2019, Avian Diseases (63) 366-370
Highly pathogenic avian influenza virus (HPAIV) from the goose/Guangdong/1996 clade 2.3.4.4 H5 lineage spread from Asia into North America in 2014, most likely by wild bird migrations. Although several variants of the virus were detected, an H5N8 and H5N2 were the most widespread in North American wild birds and...
Biological and mineralogical controls over cycling of low molecular weight organic compounds along a soil chronosequence
Jack McFarland, Mark P. Waldrop, Daniel Strawn, Courtney Creamer, Corey R. Lawrence, Monica Haw
2019, Soil Biology and Biochemistry (133) 16-27
Low molecular weight organic compounds (LMWOC) represent a small but critical component of soil organic matter (SOM) for microbial growth and metabolism. The fate of these compounds is largely under microbial control, yet outside the cell, intrinsic soil properties can also significantly influence their turnover and retention. Using a chronosequence...
