Sexual difference in PCB concentrations of coho salmon (Oncorhynchus kisutch)
Charles P. Madenjian, Candy S. Schrank, Linda J. Begnoche, Robert F. Elliott, Richard T. Quintal
2010, Science of the Total Environment (408) 1719-1724
We determined polychlorinated biphenyl (PCB) concentrations in 35 female coho salmon (Oncorhynchus kisutch) and 60 male coho salmon caught in Lake Michigan (Michigan and Wisconsin, United States) during the fall of 1994 and 1995. In addition, we determined PCB concentrations in the skin-on fillets of 26 female and 19 male...
Slow slip phenomena in Cascadia from 2007 and beyond: a review
Joan Gomberg, Cascadia 2007 and Beyond Working Group
2010, GSA Bulletin (122) 963-978
Recent technological advances combined with more detailed analyses of seismologic and geodetic observations have fundamentally changed our understanding of the ways in which tectonic stresses arising from plate motions are accommodated by slip on faults. The traditional view that relative plate motions are accommodated by a simple cycle of stress...
The North American upper mantle: Density, composition, and evolution
Walter D. Mooney, Mikhail K. Kaban
2010, Journal of Geophysical Research B: Solid Earth (115)
The upper mantle of North America has been well studied using various seismic methods. Here we investigate the density structure of the North American (NA) upper mantle based on the integrative use of the gravity field and seismic data. The basis of our study is the removal of the gravitational...
Sexual difference in PCB concentrations of lake trout (Salvelinus namaycush) from Lake Ontario
Charles P. Madenjian, Michael J. Keir, D. Michael Whittle, George E. Noguchi
2010, Science of the Total Environment (408) 1725-1730
We determined polychlorinated biphenyl (PCB) concentrations in 61 female lake trout (Salvelinus namaycush) and 71 male lake trout from Lake Ontario (Ontario, Canada and New York, United States). To estimate the expected change in PCB concentration due to spawning, PCB concentrations in gonads and in somatic tissue of lake trout...
Vegetation monitoring for Guatemala: a comparison between simulated VIIRS and MODIS satellite data
Vijendra K. Boken, Gregory L. Easson, James Rowland
2010, Geocarto International (25) 617-627
The advanced very high resolution radiometer (AVHRR) and moderate resolution imaging spectroradiometer (MODIS) data are being widely used for vegetation monitoring across the globe. However, sensors will discontinue collecting these data in the near future. National Aeronautics and Space Administration is planning to launch a new sensor, visible infrared imaging...
Slow slip event at Kilauea Volcano
Michael P. Poland, Asta Miklius, J. David Wilson, Paul G. Okubo, Emily Montgomery-Brown, Paul Segall, Benjamin Brooks, James Foster, Cecily Wolfe, Ellen Syracuse, Clifford Thurbe
2010, Eos, Transactions, American Geophysical Union (91) 118-118
Early in the morning of 1 February 2010 (UTC; early afternoon 31 January 2010 local time), continuous Global Positioning System (GPS) and tilt instruments detected a slow slip event (SSE) on the south flank of Kilauea volcano, Hawaii. The SSE lasted at least 36 hours and resulted in a maximum...
Thiamine status and culture of rainbow smelt (Osmerus mordax) from Owasco Lake, New York
Marc A. Chalupnicki, H. George Ketola, Micheal H. Zehfus, Jonathan R. Crosswait, Jacques Rinchard, James E. McKenna Jr.
2010, Journal of Freshwater Ecology (25) 211-217
In 2005, 2008, and 2009, eggs were collected for analysis of total thiamine fiom 2, 58, and 30 gravid rainbow smelt (Osmerus mordax) captured in Edgewater Creek, Owasco Lake, New York, respectively. Mean egg thiamine concentrations (nmollg i standard error) in 2005, 2008, and 2009 were 6.0 ± 1.8, 13.3...
Anisotropy, repeating earthquakes, and seismicity associated with the 2008 eruption of Okmok Volcano, Alaska
Jessica H. Johnson, Stephanie Prejean, Martha K. Savage, John Townend
2010, Journal of Geophysical Research (115)
We use shear wave splitting (SWS) analysis and double-difference relocation to examine temporal variations in seismic properties prior to and accompanying magmatic activity associated with the 2008 eruption of Okmok volcano, Alaska. Using bispectrum cross-correlation, a multiplet of 25 earthquakes is identified spanning five years leading up to the eruption,...
Repose time and cumulative moment magnitude: A new tool for forecasting eruptions?
W.A. Thelen, S. D. Malone, M.E. West
2010, Geophysical Research Letters (37)
During earthquake swarms on active volcanoes, one of the primary challenges facing scientists is determining the likelihood of an eruption. Here we present the relation between repose time and the cumulative moment magnitude (CMM) as a tool to aid in differentiating between an eruption and a period of unrest. In...
Remotely triggered microearthquakes and tremor in central California following the 2010 Mw 8.8 Chile earthquake
Zhigang Peng, David P. Hill, David R. Shelly, Chastity Aiken
2010, Geophysical Research Letters (37)
We examine remotely triggered microearthquakes and tectonic tremor in central California following the 2010 Mw 8.8 Chile earthquake. Several microearthquakes near the Coso Geothermal Field were apparently triggered, with the largest earthquake (Ml 3.5) occurring during the large-amplitude Love surface waves. The Chile mainshock also triggered numerous tremor bursts near...
Volcano monitoring using GPS: Developing data analysis strategies based on the June 2007 Kīlauea Volcano intrusion and eruption
Kristine M. Larson, Michael Poland, Asta Miklius
2010, Journal of Geophysical Research B: Solid Earth (115) B07406
The global positioning system (GPS) is one of the most common techniques, and the current state of the art, used to monitor volcano deformation. In addition to slow (several centimeters per year) displacement rates, GPS can be used to study eruptions and intrusions that result in much larger (tens of...
The bioeconomic impact of different management regulations on the Chesapeake Bay blue crab fishery
David B. Bunnell, Douglas W. Lipton, Thomas J. Miller
2010, North American Journal of Fisheries Management (30) 1505-1521
The harvest of blue crabs Callinectes sapidus in Chesapeake Bay declined 46% between 1993 and 2001 and remained low through 2008. Because the total market value of this fishery has declined by an average of US $ 3.3 million per year since 1993, the commercial fishery has been challenged to...
Ground surface deformation patterns, magma supply, and magma storage at Okmok volcano, Alaska, from InSAR analysis: 2. Coeruptive deflation, July-August 2008
Zhong Lu, Daniel Dzurisin
2010, Journal of Geophysical Research B: Solid Earth (115)
A hydrovolcanic eruption near Cone D on the floor of Okmok caldera, Alaska, began on 12 July 2008 and continued until late August 2008. The eruption was preceded by inflation of a magma reservoir located beneath the center of the caldera and ∼3 km below sea level (bsl), which began...
Wind-enhanced resuspension in the shallow waters of South San Francisco Bay: Mechanisms and potential implications for cohesive sediment transport
Andreas Brand, Jessica R. Lacy, Kevin Hsu, Daniel Hoover, Steve Gladding, Mark T. Stacey
2010, Journal of Geophysical Research C: Oceans (115)
We investigated the driving forces of sediment dynamics at the shoals in South San Francisco Bay. Two stations were deployed along a line perpendicular to a 14 m deep channel, 1000 and 2000 m from the middle of the channel. Station depths were 2.59 and 2.19 m below mean lower...
Postseismic relaxation following the 1994 Mw6.7 Northridge earthquake, southern California
J.C. Savage, J. L. Svarc
2010, Journal of Geophysical Research B: Solid Earth (115)
We have reexamined the postearthquake deformation of a 65 km long linear array of 11 geodetic monuments extending north–south across the rupture (reverse slip on a blind thrust dipping 40°S–20°W) associated with the 1994 Mw6.7 Northridge earthquake. That array was surveyed frequently in the interval from 4 to 2650 days...
The Sargassum Frogfish (Histrio histrio Linnaeus) observed in mangroves in St. John, US Virgin Islands
C.S. Rogers, T.W. Pietsch, J.E. Randall, R.J. Arnold
2010, Coral Reefs (29) 577-577
The Sargassum Frogfish (Histrio histrio), the only pelagic member of the frogfish family Antennariidae, is considered an obligate associate of floating mats of the brown algae Sargassum natans and S. fluitans (Adams 1960; Dooley 1972; Pietsch and Grobecker 1987). Between February and April 2010, 20 of these fish were observed...
The ODD protocol: A review and first update
Volker Grimm, Uta Berger, Donald L. DeAngelis, J. Gary Polhill, Jarl Giske, Steve F. Railsback
2010, Ecological Modelling (221) 2760-2768
The ‘ODD’ (Overview, Design concepts, and Details) protocol was published in 2006 to standardize the published descriptions of individual-based and agent-based models (ABMs). The primary objectives of ODD are to make model descriptions more understandable and complete, thereby making ABMs less subject to criticism for being irreproducible. We have systematically...
The effects of simulated solar UVB radiation on early developmental stages of the Northwestern Salamander (Ambystoma gracile) from three lakes
Robin D. Calfee, Edward E. Little, Christopher A. Pearl, Robert L. Hoffman
2010, Journal of Herpetology (44) 572-580
Solar ultraviolet radiation (UV) has received much attention as a factor that could play a role in amphibian population declines. UV can be hazardous to some amphibians, but the resultant effects depend on a variety of environmental and behavioral factors. In this study, the potential effects of UV on the...
The 2003-2008 summary of the North American Breeding Bird Survey
David J. Ziolkowski Jr., Keith L. Pardieck, John R. Sauer
2010, Bird Populations (10) 90-109
Data from the North American Breeding Bird Survey were used to estimate continental and regional changes in bird populations for the 6-yr period 2003-2008 and the 2-yr period 2007-2008. These short-term changes were placed in the context of population trends estimated over the 1966-2008 interval. Across the entire survey area,...
Temperature inverted haloclines provide winter warm-water refugia for manatees in southwest Florida
Bradley Stith, James P. Reid, Catherine A. Langtimm, Eric D. Swain, Terry J. Doyle, Daniel H. Slone, Jeremy D. Decker, Lars E. Soderqvist
2010, Estuaries and Coasts (34) 106-119
Florida manatees (Trichechus manatus latirostris) overwintering in the Ten Thousand Islands and western Everglades have no access to power plants or major artesian springs that provide warm-water refugia in other parts of Florida. Instead, hundreds of manatees aggregate at artificial canals, basins, and natural deep water sites that act as...
Systematics of the Platyrrhinus helleri species complex (Chiroptera: Phyllostomidae), with descriptions of two new species
Paul M. Velazco, Alfred L. Gardner, Bruce D. Patterson
2010, Zoological Journal of the Linnean Society (159) 785-812
Platyrrhinus is a diverse genus of small to large phyllostomid bats characterized by a comparatively narrow uropatagium thickly fringed with hair, a white dorsal stripe, comparatively large inner upper incisors that are convergent at the tips, and three upper and three lower molars. Eighteen species are currently recognized, the majority...
Sustaining visitor use in protected areas: Future opportunities in recreation ecology research based on the USA experience
Christopher A. Monz, David N. Cole, Yu-Fai Leung, Jeffrey L. Marion
2010, Environmental Management (45) 551-562
Recreation ecology, the study of environmental consequences of outdoor recreation activities and their effective management, is a relatively new field of scientific study having emerged over the last 50 years. During this time, numerous studies have improved our understanding of how use-related, environmental and managerial factors affect ecological conditions and processes....
Suspended-sediment concentration regimes for two biological reference streams in Middle Tennessee
Timothy H. Diehl, William J. Wolfe
2010, Journal of the American Water Resources Association (46) 824-837
Temporal patterns of suspended-sediment concentration (SSC) duration and frequency (SSC regimes) were characterized and compared with biological impairment thresholds for two headwater streams in the Western Highland Rim of Tennessee. The SSC regimes were plotted as curves showing concentrations and durations of the annual longest and tenth-longest SSC excursions above...
Modeling seasonal dynamics of small fish cohorts in fluctuating freshwater marsh landscapes
Fred Jopp, Donald L. DeAngelis, Joel C. Trexler
2010, Landscape Ecology (25) 1041-1054
Small-bodied fishes constitute an important assemblage in many wetlands. In wetlands that dry periodically except for small permanent waterbodies, these fishes are quick to respond to change and can undergo large fluctuations in numbers and biomasses. An important aspect of landscapes that are mixtures of marsh and permanent waterbodies is...
Stimulation of methane generation from nonproductive coal by addition of nutrients or a microbial consortium
Elizabeth Jones, Mary A. Voytek, M.D. Corum, William H. Orem
2010, Applied and Environmental Microbiology (76) 7013-7022
Biogenic formation of methane from coal is of great interest as an underexploited source of clean energy. The goal of some coal bed producers is to extend coal bed methane productivity and to utilize hydrocarbon wastes such as coal slurry to generate new methane. However, the process and factors controlling...
