A model to locate potential areas for lake sturgeon spawning habitat construction in the St. Clair–Detroit River System
David Bennion, Bruce A. Manny
2014, Journal of Great Lakes Research (40) 43-51
In response to a need for objective scientific information that could be used to help remediate loss of fish spawning habitat in the St. Clair River and Detroit River International Areas of Concern, this paper summarizes a large-scale geographic mapping investigation. Our study integrates data on two variables that many...
Designing long-term fish community assessments in connecting channels: Lessons from the Saint Marys River
Jeff Schaeffer, Mark W. Rogers, David G. Fielder, Neal Godby, Anjanette K. Bowen, Lisa O'Connor, Josh Parrish, Susan Greenwood, Stephen Chong, Greg Wright
2014, Journal of Great Lakes Research (40) 15-22
Long-term surveys are useful in understanding trends in connecting channel fish communities; a gill net assessment in the Saint Marys River performed periodically since 1975 is the most comprehensive connecting channels sampling program within the Laurentian Great Lakes. We assessed efficiency of that survey, with intent to inform development of...
Inner-shelf circulation and sediment dynamics on a series of shoreface connected ridges offshore of Fire Island, NY
John C. Warner, Jeffrey H. List, William C. Schwab, George Voulgaris, Brandy N. Armstrong, N Marshall
2014, Ocean Dynamics (64) 1767-1781
Locations along the inner-continental shelf offshore of Fire Island, NY, are characterized by a series of shoreface-connected ridges (SFCRs). These sand ridges have approximate dimensions of 10 km in length, 3 km spacing, and up to ∼8 m ridge to trough relief and are oriented obliquely at approximately 30° clockwise from the coastline....
Migratory bird hunter opinions regarding potential management strategies for controlling light goose populations
Andrew J. Dinges, Elisabeth B. Webb, Mark P. Vrtiska, Charles H. Nilon, Sonja A. Wilhelm Stanis
2014, Wildlife Society Bulletin (38) 728-733
We expanded the Nebraska Light Goose Conservation Order (LGCO) harvest survey (NE, USA) in spring 2012 to assess migratory bird hunter opinions regarding future management strategies for controlling light goose populations. Although hunters strongly agreed that population control of light geese was an important wildlife management issue, they were generally...
Magma-ice-sediment interactions and the origin of lava/hyaloclastite sequences in the Síða formation, South Iceland
Tenley J. Banik, Paul J. Wallace, Armann Hoskuldsson, Calvin F. Miller, Charles R. Bacon, David J. Furbish
2014, Bulletin of Volcanology (76)
Products of subglacial volcanism can illuminate reconstructions of paleo-environmental conditions on both local and regional scales. Competing interpretations of Pleistocene conditions in south Iceland have been proposed based on an extensive sequence of repeating lava-and-hyaloclastite deposits in the Síða district. We propose here a new eruptive model and refine the...
Accounting for imperfect detection and survey bias in statistical analysis of presence-only data
Robert M. Dorazio
2014, Global Ecology and Biogeography (23) 1472-1484
Aim During the past decade ecologists have attempted to estimate the parameters of species distribution models by combining locations of species presence observed in opportunistic surveys with spatially referenced covariates of occurrence. Several statistical models have been proposed for the analysis of presence-only data, but these models have largely ignored the...
Why the New Madrid earthquakes are M 7–8 and the Charleston earthquake is ∼M 7
Chris H. Cramer, Oliver S. Boyd
2014, Bulletin of the Seismological Society of America (104) 2884-2903
Estimates of magnitudes of large historical earthquakes are an essential input to and can seriously affect seismic‐hazard estimates. The earthquake‐intensity observations, modified Mercalli intensities (MMI), and assigned magnitudes Mof the 1811–1812 New Madrid events have been reinterpreted several times in the last decade and have been a source of controversy...
Raptor abundance and northern bobwhite survival and habitat use
J. Turner, F. Hernandez, Clint W. Boal, Bart M. Ballard, Fred C. Bryant, D.B. Wester
2014, Wildlife Society Bulletin (38) 689-696
Predation risk has a profound influence on prey behavior and habitat use. The Rio Grande Plains ecoregion of Texas, USA, provides a unique opportunity to investigate changes in prey behavior because the ecoregion experiences a high influx of raptors every year during autumn migration. We used an 8-year...
A 21-year study of seasonal and interspecific variation of hatchling emergence in a nearctic freshwater turtle community: to overwinter or not to overwinter?
Jeffrey E. Lovich, Carl H. Ernst, Evelyn M. Ernst, Julia L. Riley
2014, Herpetological Monographs (28) 93-109
Hatchling emergence patterns were studied in a community of six species of freshwater turtles in Lancaster County, Pennsylvania, U.S.A. including: Chelydra serpentina, Chrysemys picta, Clemmys guttata, Glyptemys insculpta, G. muhlenbergii, and Sternotherus odoratus. Data were collected every year from 1965 to 1985 on estimated date of emergence, carapace length, April...
Geologic implications of gas hydrates in the offshore of India: results of the National Gas Hydrate Program Expedition 01
Timothy S. Collett, Ray Boswell, J. R. Cochran, Pushpendra Kumar, Malcolm Lall, Aninda Mazumdar, Mangipudi Venkata Ramana, Tammisetti Ramprasad, Michael Riedel, Kalachand Sain, Arun Vasant Sathe, Krishna Vishwanath
2014, Marine and Petroleum Geology (58) 3-28
The Indian National Gas Hydrate Program Expedition 01 (NGHP-01) is designed to study the occurrence of gas hydrate along the passive continental margin of the Indian Peninsula and in the Andaman convergent margin, with special emphasis on understanding the geologic and geochemical controls on the occurrence of gas hydrate in...
Geologic implications of gas hydrates in the offshore of India: Krishna-Godavari Basin, Mahanadi Basin, Andaman Sea, Kerala-Konkan Basin
Pushpendra Kumar, Timothy S. Collett, Ray Boswell, James R. Cochran, Malcolm Lall, Aninda Mazumdar, Mangipudi Venkata Ramana, Tammisetti Ramprasad, Michael Riedel, Kalachand Sain, Arun Vasant Sathe, Krishna Vishwanath, U.S. Yadav
2014, Marine and Petroleum Geology (58) 29-98
Gas hydrate resource assessments that indicate enormous global volumes of gas present within hydrate accumulations have been one of the primary driving forces behind the growing interest in gas hydrates. Gas hydrate volumetric estimates in recent years have focused on documenting the geologic parameters in the “gas hydrate petroleum system”...
Evaluating abiotic influences on soil salinity of inland managed wetlands and agricultural croplands in a semi-arid environment
D. Fowler, Sammy L. King, David C. Weindorf
2014, Wetlands (34) 1229-1239
Agriculture and moist-soil management are important management techniques used on wildlife refuges to provide adequate energy for migrant waterbirds. In semi-arid systems, the accumulation of soluble salts throughout the soil profile can limit total production of wetland plants and agronomic crops and thus jeopardize meeting waterbird energy needs. This study...
Oil source-fingerprinting in support of polarimetric radar mapping of Macondo-252 oil in Gulf Coast marshes
Elijah W. Ramsey III, Buffy M. Meyer, Amina Rangoonwala, Edward Overton, Cathleen E. Jones, Terri Bannister
2014, Marine Pollution Bulletin (89) 85-95
Polarimetric synthetic aperture radar (PolSAR) data exhibited dramatic, spatially extensive changes from June 2009 to June 2010 in Barataria Bay, Louisiana. To determine whether these changes were associated with the Deepwater Horizon (DWH) oil spill, twenty-nine sediment samples were collected in 2011 from shoreline and nearshore–interior coastal marsh locations where oil was...
Disease dynamics during wildlife translocations: disruptions to the host population and potential consequences for transmission in desert tortoise contact networks
Christina M. Aiello, Kenneth E. Nussear, Andrew D. Walde, Todd C. Esque, Patrick G. Emblidge, Pratha Sah, S. Bansal, Peter J. Hudson
2014, Animal Conservation (17) 27-39
Wildlife managers consider animal translocation a means of increasing the viability of a local population. However, augmentation may disrupt existing resident disease dynamics and initiate an outbreak that would effectively offset any advantages the translocation may have achieved. This paper examines fundamental concepts of disease ecology and identifies the conditions...
The fellow speaks: Sometimes you get only one chance
Paul A. Hsieh
2014, AGU Hydrology Section Newsletter 17-19
I am grateful to AGU for selecting me as one of the five recipient of the 2014 Ambassador Award, which also includes election as a Union Fellow. I thank my colleague Steve Ingebritsen for nominating me. As Steve’s citation mentions my work on the Deepwater Horizon oil spill response, I...
Enterococcus phages as potential tool for identifying sewage inputs in the Great Lakes region
K. Vijayavel, Muruleedhara N. Byappanahalli, H. Taylor, Richard L. Whitman, J. Ebdon, D.R. Kashian
2014, Journal of Great Lakes Research (40) 989-993
Bacteriophages are viruses living in bacteria that can be used as a tool to detect fecal contamination in surface waters around the world. However, the lack of a universal host strain makes them unsuitable for tracking fecal sources. We evaluated the suitability of two newly isolated Enterococcus host strains (ENT-49 and ENT-55)...
Prey choice and habitat use drive sea otter pathogen exposure in a resource-limited coastal system
Christine K. Johnson, M. Tim Tinker, James A. Estes, Patricia A. Conrad, Michelle M. Staedler, Melissa A. Miller, David A. Jessup, Jonna A.K. Mazet
2014, Proceedings of the National Academy of Sciences of the United States of America (106) 2242-2247
The processes promoting disease in wild animal populations are highly complex, yet identifying these processes is critically important for conservation when disease is limiting a population. By combining field studies with epidemiologic tools, we evaluated the relationship between key factors impeding southern sea otter (Enhydra lutris nereis) population growth: disease...
Molecular-level characterization of crude oil compounds combining reversed-phase high-performance liquid chromatography with off-line high-resolution mass spectrometry
Arum Sim, Yunju Cho, Daae Kim, Matthias Witt, Justin E. Birdwell, Byung Ju Kim, Sunghwan Kim
2014, Fuel (140) 717-723
A reversed-phase separation technique was developed in a previous study (Loegel et al., 2012) and successfully applied to the de-asphalted fraction of crude oil. However, to the best of our knowledge, the molecular-level characterization of oil fractions obtained by reversed-phase high-performance liquid chromatography (HPLC) coupled with high-resolution mass spectrometry (MS)...
238U-230Th dating of chevkinite in high-silica rhyolites from La Primavera and Yellowstone calderas
Jorge A. Vazquez, Noel O. Velasco, Axel K. Schmitt, Heather A. Bleick, Mark E. Stelten
2014, Chemical Geology (390) 109-118
Application of 238U-230Th disequilibrium dating of accessory minerals with contrasting stabilities and compositions can provide a unique perspective on magmatic evolution by placing the thermochemical evolution of magma within the framework of absolute time. Chevkinite, a Th-rich accessory mineral that occurs in peralkaline and metaluminous rhyolites, may be particularly useful...
Simultaneous Gaussian and exponential inversion for improved analysis of shales by NMR relaxometry
Kathryn E. Washburn, Endre Anderssen, Sarah J. Vogt, Joseph D. Seymour, Justin E. Birdwell, Catherine M. Kirkland, Sarah L. Codd
2014, Journal of Magnetic Resonance (250) 7-16
Nuclear magnetic resonance (NMR) relaxometry is commonly used to provide lithology-independent porosity and pore-size estimates for petroleum resource evaluation based on fluid-phase signals. However in shales, substantial hydrogen content is associated with solid and fluid signals and both may be detected. Depending on the motional regime, the signal from the...
Photographic evidence of interspecies mating in geckos of the Lepidodactylus lugubris unisexual-bisexual complex (Squamata: Gekkonidae)
Donald W. Buden, Carlos Cianchini, Danko Taborosi, Robert N. Fisher, Aaron Bauer, Ivan Ineich
2014, Phyllomedusa (13) 133-136
An interspecies mating between unisexual Lepidodactylus lugubris and a male of the bisexual Lepidodactylus moestus was photographed by Carlos Cianchini on Kosrae [Island], FSM, at 18:15 h on 22 August 2013 (Figure 1). The mating pair was on a window frame inside a house at Pukusruk Wan village (05°21'01" N,...
Reconstructing the deadly eruptive events of 1790 CE at Kīlauea Volcano, Hawai‘i
Don Swanson, Samantha J Weaver, Bruce F. Houghton
2014, Geological Society of America Bulletin (127) 503-515
A large number of people died during an explosive eruption of Kīlauea Volcano in 1790 CE. Detailed study of the upper part of the Keanakāko‘i Tephra has identified the deposits that may have been responsible for the deaths. Three successive units record shifts in eruption style that agree well with...
A visualization tool to support decision making in environmental and biological planning
Stephanie S. Romañach, Mark McKelvy, Craig Conzelmann, Kevin J. Suir
2014, Environmental Modelling and Software (62) 221-229
Large-scale ecosystem management involves consideration of many factors for informed decision making. The EverVIEW Data Viewer is a cross-platform desktop decision support tool to help decision makers compare simulation model outputs from competing plans for restoring Florida's Greater Everglades. The integration of NetCDF metadata conventions into EverVIEW allows end-users from...
Site selection and nest survival of the Bar-Headed Goose (Anser indicus) on the Mongolian Plateau
Nyambayar Batbayar, John Y. Takekawa, Tseveenmyadag Natsagdorj, Kyle A. Spragens, Xiamgming Xiao
2014, Waterbirds (37) 381-393
Waterbirds breeding on the Mongolian Plateau in Central Asia must find suitable wetland areas for nesting in a semiarid region characterized by highly variable water conditions. The first systematic nesting study of a waterbird dependent on this region for breeding was conducted on the Bar-headed Goose (Anser indicus). The purpose...
Coastal tectonics on the eastern margin of the Pacific Rim: Late Quaternary sea-level history and uplift rates, Channel Islands National Park, California, USA
Daniel R. Muhs, Kathleen R. Simmons, R. Randall Schumann, Lindsey T. Groves, Stephen B. DeVogel, Scott A. Minor, Deanna Laurel
2014, Quaternary Science Reviews (105) 209-238
The Pacific Rim is a region where tectonic processes play a significant role in coastal landscape evolution. Coastal California, on the eastern margin of the Pacific Rm, is very active tectonically and geomorphic expressions of this include uplifted marine terraces. There have been, however, conflicting estimates of the rate of...
