On factors influencing air-water gas exchange in emergent wetlands
David T. Ho, Victor C. Engel, Sara Ferron, Benjamin Hickman, Jay Choi, Judson W. Harvey
2018, Journal of Geophysical Research G: Biogeosciences (123) 178-192
Knowledge of gas exchange in wetlands is important in order to determine fluxes of climatically and biogeochemically important trace gases and to conduct mass balances for metabolism studies. Very few studies have been conducted to quantify gas transfer velocities in wetlands, and many wind speed/gas exchange parameterizations used in oceanographic...
Book Review: And then there were none: The demise of Desert Bighorn Sheep in the Pusch Ridge Wilderness
James W. Cain III
2018, Journal of Wildlife Management (82) 475-476
And Then There Were None: The Demise of Desert Bighorn Sheep in the Pusch Ridge Wilderness. Paul R.Krausman. 2017. The University of New Mexico Press, Albuquerque, New Mexico, USA. 248 pp. $65.00 hardcover. ISBN 978‐0‐8263‐5785‐4....
Evidence for major input of riverine organic matter into the ocean
Xiaoyan Cao, George R. Aiken, Kenna D. Butler, Thomas G. Huntington, William M. Balch, Jingdong Mao, Klaus Schmidt-Rohr
2018, Organic Geochemistry (116) 62-76
The changes in the structure of XAD-8 isolated dissolved organic matter (DOM) samples along a river (Penobscot River) to estuary (Penobscot Bay) to ocean (across the Gulf of Maine) transect and from the Pacific Ocean were investigated using selective and two dimensional (2D) nuclear magnetic resonance (NMR) spectroscopy coupled with...
Assessing the influence of multiple stressors on stream diatom metrics in the upper Midwest, USA
Mark D. Munn, Ian R. Waite, Christopher P. Konrad
2018, Ecological Indicators (85) 1239-1248
Water resource managers face increasing challenges in identifying what physical and chemical stressors are responsible for the alteration of biological conditions in streams. The objective of this study was to assess the comparative influence of multiple stressors on benthic diatoms at 98 sites that spanned a range of stressors in...
“Naturalness” in designated Wilderness: Long-term changes in non-native plant dynamics on campsites, Boundary Waters, Minnesota
Holly Eagleston, Jeffrey L. Marion
2018, Forest Science (64) 50-56
Wilderness areas in the United States are preserved for their untrammeled naturalness and opportunities for unconfined recreation. The Boundary Waters Canoe Area Wilderness has these qualities, but long-term recreation visitation pressures on campsites can cause significant ecological changes. This article explores changes on campsites, specifically examining non-native plant ecology over...
Monitoring algal blooms in drinking water reservoirs using the Landsat-8 Operational Land Imager
Darryl Keith, Jennifer Rover, Jason Green, Brian Zalewsky, Mike Charpentier, Glen Hursby, Joseph Bishop
2018, International Journal of Remote Sensing (39) 2818-2846
In this study, we demonstrated that the Landsat-8 Operational Land Imager (OLI) sensor is a powerful tool that can provide periodic and system-wide information on the condition of drinking water reservoirs. The OLI is a multispectral radiometer (30 m spatial resolution) that allows ecosystem observations at spatial and temporal scales that...
Associations of stream geomorphic conditions and prevalence of alternative reproductive tactics among sockeye salmon populations
L. B. DeFilippo, D.E. Schindler, J.L. Carter, Timothy E. Walsworth, T. J. Cline, Wesley Larson, T. Buehrens
2018, Journal of Evolutionary Biology (31) 239-253
In many species, males may exhibit alternative life histories to circumvent the costs of intrasexual competition and female courtship. While the evolution and underlying genetic and physiological mechanisms behind alternative reproductive tactics are well studied, there has been less consideration of the ecological factors that regulate their prevalence. Here, we...
Deciphering the link between doubly uniparental inheritance of mtDNA and sex determination in bivalves: Clues from comparative transcriptomics
Charlotte Capt, Sébastien Renaut, Fabrizio Ghiselli, Liliana Milani, Nathan A. Johnson, Bernard E. Sietman, Donald Stewart, Sophie Breton
2018, Genome Biology and Evolution (10) 577-590
Bivalves exhibit an astonishing diversity of sexual systems and sex-determining mechanisms. They can be gonochoric, hermaphroditic or androgenetic, with both genetic and environmental factors known to determine or influence sex. One unique sex-determining system involving the mitochondrial genome has also been hypothesized to exist in bivalves with doubly uniparental inheritance...
Contaminants in tropical island streams and their biota
Elissa N. Buttermore, W. Gregory Cope, Thomas J. Kwak, Patrick B. Cooney, Damian Shea, Peter R. Lazaro
2018, Environmental Research (161) 615-623
Environmental contamination is problematic for tropical islands due to their typically dense human populations and competing land and water uses. The Caribbean island of Puerto Rico (USA) has a long history of anthropogenic chemical use, and its human population density is among the highest globally, providing a model environment to...
Malassezia vespertilionis sp. nov.: A new cold-tolerant species of yeast isolated from bats
Jeffrey M. Lorch, Jonathan M. Palmer, Karen J. Vanderwolf, Katie Z. Schmidt, Michelle L. Verant, Theodore J. Weller, David S. Blehert
2018, Persoonia - Molecular Phylogeny and Evolution of Fungi (41) 56-70
Malassezia is a genus of medically-important, lipid-dependent yeasts that live on the skin of warm-blooded animals. The 17 described species have been documented primarily on humans and domestic animals, but few studies have examined Malassezia species associated with more diverse host groups such as wildlife. While investigating the skin mycobiota of healthy bats,...
Estimating wetland connectivity to streams in the Prairie Pothole Region: An isotopic and remote sensing approach
J. R. Brooks, David M. Mushet, Melanie K. Vanderhoof, Scott G. Leibowitz, J. R. Christensen, Brian Neff, Donald O. Rosenberry, W. D. Rugh, L.C. Alexander
2018, Water Resources Research (54) 955-977
Understanding hydrologic connectivity between wetlands and perennial streams is critical to understanding the reliance of stream flow on inputs from wetlands. We used the isotopic evaporation signal in water and remote sensing to examine wetland‐stream hydrologic connectivity within the Pipestem Creek watershed, North Dakota, a watershed dominated by prairie‐pothole wetlands....
Moving in the Anthropocene: Global reductions in terrestrial mammalian movements
Marlee A. Tucker, Katrin Bohning-Gaese, William F. Fagan, John Fryxell, Bram Van Moorter, Susan C Alberts, Abdullahi H. Ali, Andrew M. Allen, Nina Attias, Tal Avgar, Hattie Bartlam-Brooks, Bayarbaatar Buuveibaatar, Jerrold L. Belant, Alessandra Bertassoni, Dean Beyer, Laura Bidner, Floris M. van Beest, Stephen Blake, Niels Blaum, Chloe Bracis, Danielle Brown, P. J. Nico de Bruyn, Francesca Cagnacci, J.M. Calabrese, Constanca Camilo-Alves, Simon Chamaille-Jammes, Andre Chiaradia, Sarah C. Davidson, Todd Dennis, Stephen DeStefano, Duane R. Diefenbach, Iain Douglas-Hamilton, Julian Fennessy, Claudia Fichtel, Wolfgang Fiedler, Christina Fischer, Ilya Fischhoff, Christen H. Fleming, Adam T. Ford, Susanne A. Fritz, Benedikt Gehr, Jacob R. Goheen, Eliezer Gurarie, Mark Hebblewhite, Marco Heurich, A. J. Mark Hewison, Christian Hof, Edward Hurme, Lynne A. Isbell, Rene Janssen, Florian Jeltsch, Petra Kaczensky, Adam Kane, Peter M. Kappeler, Matthew J. Kauffman, Roland Kays, Duncan Kimuyu, Flavia Koch, Bart Kranstauber, Scott LaPoint, Peter Leimgruber, John D. C. Linnell, Pascual Lopez-Lopez, A. Catherine Markham, Jenny Mattisson, Emilia Patricia Medici, Ugo Mellone, E. Merrill, Guilherme de Miranda Mourao, Ronaldo G. Morato, Nicolas Morellet, Thomas A. Morrison, Samuel L. Diaz-Munoz, Atle Mysterud, Dejid Nandintsetseg, Ran Nathan, Aidin Niamir, John Odden, Robert B. O’Hara, Luiz G. R. Oliveira-Santos, Kirk A. Olson, Bruce D. Patterson, Rogerio Cunha de Paula, Luca Pedrotti, Bjorn Reineking, Martin Rimmler, T. L. Rogers, Christer Moe Rolandsen, Christopher S. Rosenberry, Daniel I. Rubenstein, Kamran Safi, Sonia Said, Nir Sapir, Hall Sawyer, Niels Martin Schmidt, Nuria Selva, Agnieszka Sergiel, Enkhtuvshin Shiilegdamba, Joao Paulo Silva, N. Singh, Erling J. Solberg, Orr Spiegel, Olav Strand, S.R. Sundaresan, Wiebke Ullmann, Ulrich Voigt, J. Wall, David W. Wattles, Martin Wikelski, Christopher C. Wilmers, John W. Wilson, George Wittemyer, Filip Zieba, Tomasz Zwijacz-Kozica, Thomas Mueller
2018, Science (359) 466-469
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human...
Three-dimensional foraging habitat use and niche partitioning in two sympatric seabird species, Phalacrocorax auritus and P. penicillatus
Adam G. Peck-Richardson, Donald E. Lyons, Daniel D. Roby, Daniel A. Cushing, James A. Lerczak
2018, Marine Ecology Progress Series (586) 251-264
Ecological theory predicts that co-existing, morphologically similar species will partition prey resources when faced with resource limitations. We investigated local movements, foraging dive behavior, and foraging habitat selection by breeding adults of 2 closely related cormorant species, double-crested cormorants Phalacrocorax auritus and Brandt’s cormorants P. penicillatus. These species nest sympatrically at East Sand...
A global audit of the status and trends of Arctic and Northern Hemisphere goose populations
Joel A. Schmutz
Anthony D. Fox, James O. Leafloor, editor(s)
2018, Report
This report attempts to review the abundance, status and distribution of natural wild goose populations in the northern hemisphere. The report comprises three parts that 1) summarise key findings from the study and the methodology and analysis applied; 2) contain the individual accounts for each of the 68 populations included...
Testing earthquake links in Mexico from 1978 up to the 2017 M=8.1 Chiapas and M=7.1 Puebla shocks
Margarita Segou, Thomas E. Parsons
2018, Geophysical Research Letters (45) 708-714
The M = 8.1 Chiapas and the M = 7.1 Puebla earthquakes occurred in the bending part of the subducting Cocos plate 11 days and ~600 km apart, a range that puts them well outside the typical aftershock zone. We find this to be a relatively common occurrence in Mexico, with 14% of M > 7.0 earthquakes since 1900 striking more...
Image simulation and assessment of the colour and spatial capabilities of the Colour and Stereo Surface Imaging System (CaSSIS) on the ExoMars Trace Gas Orbiter
Livio L. Tornabene, Frank P. Seelos, Antoine Pommerol, Nicolas Thomas, Christy M. Caudill, Patricio Becerra, John C. Bridges, Shane Byrne, Marco Cardinale, Matthew Chojnacki, Susan J. Conway, Gabriele Cremonese, Colin M. Dundas, M. R. El-Maarry, Jennifer Fernando, Candice J. Hansen, Kayle Hansen, Tanya N. Harrison, Rachel Henson, Lucia Marinangeli, Alfred S. McEwen, Maurizio Pajola, Sarah S. Sutton, James J. Wray
2018, Space Science Reviews (214)
This study aims to assess the spatial and visible/near-infrared (VNIR) colour/spectral capabilities of the 4-band Colour and Stereo Surface Imaging System (CaSSIS) aboard the ExoMars 2016 Trace Grace Orbiter (TGO). The instrument response functions for the CaSSIS imager was used to resample spectral libraries, modelled spectra and to construct spectrally...
Long‐term trends in fall age ratios of black brant
David H. Ward, Courtney L. Amundson, Robert A. Stehn, Christian P. Dau
2018, Journal of Wildlife Management (82) 362-373
Accurate estimates of the age composition of populations can inform past reproductive success and future population trajectories. We examined fall age ratios (juveniles:total birds) of black brant (Branta bernicla nigricans; brant) staging at Izembek National Wildlife Refuge near the tip of the Alaska Peninsula, southwest Alaska, USA, 1963 to 2015....
Seventy years of stream‐fish collections reveal invasions and native range contractions in an Appalachian (USA) watershed
Joseph D. Buckwalter, Emmanuel A. Frimpong, Paul L. Angermeier, Jacob N. Barney
2018, Diversity and Distributions (24) 219-232
AimKnowledge of expanding and contracting ranges is critical for monitoring invasions and assessing conservation status, yet reliable data on distributional trends are lacking for most freshwater species. We developed a quantitative technique to detect the sign (expansion or contraction) and functional form of range‐size changes for freshwater...
Variabilities in probabilistic seismic hazard maps for natural and induced seismicity in the central and eastern United States
S. Mostafa Mousavi, Gregory C. Beroza, Susan M. Hoover
2018, The Leading Edge (37) 141a1-141a9
Probabilistic seismic hazard analysis (PSHA) characterizes ground-motion hazard from earthquakes. Typically, the time horizon of a PSHA forecast is long, but in response to induced seismicity related to hydrocarbon development, the USGS developed one-year PSHA models. In this paper, we present a display of the variability in USGS hazard curves...
Attributes of seasonal home range influence choice of migratory strategy in white-tailed deer
Charles R. Henderson Jr., Michael S. Mitchell, Woodrow L. Myers, Paul M. Lukacs, Gerald P. Nelson
2018, Journal of Mammalogy (99) 89-96
Partial migration is a common life-history strategy among ungulates living in seasonal environments. The decision to migrate or remain on a seasonal range may be influenced strongly by access to high-quality habitat. We evaluated the influence of access to winter habitat of high quality on the probability of a female...
Validation of ATR FT-IR to identify polymers of plastic marine debris, including those ingested by marine organisms
Melissa R. Jung, F. David Horgen, Sara V. Orski, Viviana Rodriguez, Kathryn L. Beers, George H. Balazs, T. Todd Jones, Thierry M. Work, Kayla C. Brignac, Sarah-Jeanne Royer, David K. Hyrenbach, Brenda A. Jensen, Jennifer M. Lynch
2018, Marine Pollution Bulletin (127) 704-716
Polymer identification of plastic marine debris can help identify its sources, degradation, and fate. We optimized and validated a fast, simple, and accessible technique, attenuated total reflectance Fourier transform infrared spectroscopy (ATR FT-IR), to identify polymers contained in plastic ingested by sea turtles. Spectra...
Preparing for an uncertain future: Migrating shorebird response to past climatic fluctuations in the Prairie Potholes
Valerie A. Steen, Susan K. Skagen, Barry R. Noon
2018, Ecosphere (9) 1-12
The Prairie Pothole Region, situated in the northern Great Plains, provides important stopover habitat for migratory shorebirds. During spring migration in the U.S. Prairie Potholes, 7.3 million shorebirds refuel in the region's myriad small, freshwater wetlands. Shorebirds use mudflats, shorelines, and ephemeral wetlands that are far more abundant in wet years...
Seismic hazard, risk, and design for South America
Mark D. Petersen, Stephen Harmsen, Kishor S. Jaiswal, Kenneth S. Rukstales, Nico Luco, Kathleen Haller, Charles Mueller, Allison Shumway
2018, Bulletin of the Seismological Society of America (108) 781-800
We calculate seismic hazard, risk, and design criteria across South America using the latest data, models, and methods to support public officials, scientists, and engineers in earthquake risk mitigation efforts. Updated continental scale seismic hazard models are based on a new seismicity catalog, seismicity rate models, evaluation of earthquake sizes,...
Contaminant-associated health effects in fishes from the Ottawa and Ashtabula Rivers, Ohio
Luke R. Iwanowicz, Vicki S. Blazer, Heather L. Walsh, Cassidy H. Shaw, David S. DeVault, Jo A. Banda
2018, Journal of Great Lakes Research (44) 184-196
The health of resident fishes serves as a biologically relevant barometer of aquatic ecosystem integrity. Here, the health of the Ottawa River and Ashtabula River (both within the Lake Erie Basin) were assessed using morphological and immunological biomarkers in brown bullheads (Ameiurus nebulosus) and largemouth bass (Micropterus salmoides). Biomarker metrics...
Nanometre-sized pores in coal: Variations between coal basins and coal origin
Richard Sakurovs, Lukas Koval, Mihaela Grigore, Anna Sokolava, Leslie F. Ruppert, Yuri B. Melnichenko
2018, International Journal of Coal Geology (186) 126-134
We have used small angle neutron scattering (SANS) to investigate the differences in methane and hexane penetration in pores in bituminous coal samples from the U.S., Canada, South Africa, and China, and maceral concentrates from Australian coals. This work is an extension of previous work that showed consistent differences...
