Behavioral effects of copper on larval white sturgeon
Holly J. Puglis, Robin D. Calfee, Edward E. Little
2019, Environmental Toxicology and Chemistry (38) 132-144
Early–life stage white sturgeon are sensitive to copper (Cu), with adverse behavioral responses observed during previous studies. The objectives of the present study were to quantify the effects of Cu exposure on white sturgeon swimming and feeding behaviors and determine their time to response. Larval sturgeon (1–2, 28, or 35...
Iterative models for early detection of invasive species across spread pathways
Gericke Cook, Catherine S. Jarnevich, Melissa Warden, Marla Downing, John Withrow, I. Leinwand
2019, Forests (10)
Species distribution models can be used to direct early detection of invasive species, if they include proxies for invasion pathways. Due to the dynamic nature of invasion, these models violate assumptions of stationarity across space and time. To compensate for issues of stationarity, we iteratively update regionalized species distribution models...
Size distributions of Arctic waterbodies reveal consistent relations in their statistical moments in space and time
Sina Muster, William J. Riley, Kurt Roth, Moritz Langer, Fabio Cresto Aleina, Charles D. Koven, Stephan Lange, Annett Bartsch, Guido Grosse, C. J. Wilson, Benjamin M. Jones, Julia Boike
2019, Frontiers Earth Science Journal (7)
Arctic lowlands are characterized by large numbers of small waterbodies, which are known to affect surface energy budgets and the global carbon cycle. Statistical analysis of their size distributions has been hindered by the shortage of observations at sufficiently high spatial resolutions. This situation has now changed with the high-resolution...
An old tree and its many‐shaped leaves
Quan Dong, Jonathan M. Friedman, Honghua Zhou
2019, Frontiers in Ecology and the Environment (17) 15-15
Plant leaf shape is highly variable. The beauty of leaves can be purely aesthetic, but also derives from the mystery of adaptive significance. This mystery is especially compelling for species with strongly varying leaf shape on a single tree. The desert poplar (Populus euphratica Oliv.) is an ancient and protected...
Elevated manganese concentrations in United States groundwater, role of land surface–soil–aquifer connections
Peter B. McMahon, Kenneth Belitz, James E. Reddy, Tyler D. Johnson
2019, Environmental Science & Technology (53) 29-38
Chemical data from 43 334 wells were used to examine the role of land surface–soil–aquifer connections in producing elevated manganese concentrations (>300 μg/L) in United States (U.S.) groundwater. Elevated concentrations of manganese and dissolved organic carbon (DOC) in groundwater are associated with shallow, anoxic water tables and soils enriched in organic...
Investigating lake-area dynamics across a permafrost-thaw spectrum using airborne electromagnetic surveys and remote sensing time-series data in Yukon Flats, Alaska
David M. Rey, Michelle Ann Walvoord, Burke Minsley, Jennifer Rover, Kamini Singha
2019, Environmental Research Letters (14) 1-13
Lakes in boreal lowlands cycle carbon and supply an important source of freshwater for wildlife and migratory waterfowl. The abundance and distribution of these lakes are supported, in part, by permafrost distribution, which is subject to change. Relationships between permafrost thaw and lake dynamics remain poorly known in most boreal...
Preface to historic and paleoflood analyses: New perspectives on climate, extreme flood risk, and the geomorphic effects of large floods
Lisa Davis, Tessa M. Harden, Samuel E. Munoz, Jeanne E. Godaire, Jim E. O'Connor
2019, Geomorphology (327) 610-612
Paleofloods are flood events that occurred prior to instrumented records that are discerned from sedimentary evidence. Historic floods are flood events that predate the instrumented record that have been reconstructed based on evidence provided by historical sources. This special issue presents papers on historic and paleoflood analyses that stemmed from...
Multi-country willingness to pay for transborder migratory species conservation: A case study of Northern Pintails
Michelle Haefele, John B. Loomis, Aaron M. Lien, James A. Dubovsky, Robert W. Merideth, Kenneth J. Bagstad, Ta-Ken Huang, Brady J. Mattsson, Darius J. Semmens, Wayne E. Thogmartin, Ruscena Wiederholt, James E. Diffendorfer, Laura Lopez-Hoffman
2019, Ecological Economics (157) 321-331
Using contingent valuation, we estimated willingness to pay (WTP) in Canada, Mexico, and the United States to protect habitat for Northern Pintails (hereafter pintails), a migratory waterfowl species that provides benefits to and requires habitat in the three countries. Our study contributes to research on spatial subsidies by measuring the value of migratory species habitat. While WTP to protect...
Ecosystem service flows from a migratory species: Spatial subsidies of the northern pintail
Kenneth J. Bagstad, Darius J. Semmens, James E. Diffendorfer, Brady J. Mattsson, James A. Dubovsky, Wayne E. Thogmartin, Ruscena Wiederholt, John B. Loomis, Joanna A. Bieri, Christine Sample, Joshua Goldstein, Laura Lopez-Hoffman
2019, Ambio (48) 61-73
Migratory species provide important benefits to society, but their cross-border conservation poses serious challenges. By quantifying the economic value of ecosystem services (ESs) provided across a species’ range and ecological data on a species’ habitat dependence, we estimate spatial subsidies—how different regions support ESs provided by a species across...
Social equity shapes zone-selection: Balancing aquatic biodiversity conservation and ecosystem services delivery in the transboundary Danube River Basin
Sami Domisch, Karan Kakouei, Javier Martinez-Lopez, Kenneth J. Bagstad, Ainhoa Magrach, Stefano Balbi, Ferdinando Villa, Andrea Funk, Thomas Hein, Florian Borgwardt, Virgilio Hermoso, Sonja C. Jahnig, Simone D. Langhans
2019, Science of the Total Environment (656) 797-807
Freshwater biodiversity is declining, despite national and international efforts to manage and protect freshwater ecosystems. Ecosystem-based management (EBM) has been proposed as an approach that could more efficiently and adaptively balance ecological and societal needs. However, this raises the question of how social and ecological objectives can be included in an integrated management plan. Here,...
Chlorinated byproducts of neonicotinoids and their metabolites: An unrecognized human exposure potential?
Kathryn L. Klarich Wong, Danielle T. Webb, Matthew R. Nagorzanski, Dana W. Kolpin, Michelle L. Hladik, David M. Cwiertny, Gregory H. LeFevre
2019, Environmental Science & Technology Letters (6) 98-105
We recently reported the initial discovery of neonicotinoid pesticides in drinking water and their potential for transformation through chlorination and alkaline hydrolysis during water treatment. The objectives of this research were: (1) to determine if neonicotinoid metabolites are relevant to drinking water exposure and (2) to identify the products formed...
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...
