Influence of thiamine deficiency on Lake Trout larval growth, foraging, and predator avoidance
J.D. Fitzsimons, Scott B. Brown, B. Williston, G. Williston, Lisa R. Brown, K. Moore, Dale C. Honeyfield, Donald E. Tillitt
2009, Journal of Aquatic Animal Health (21) 302-314
Diet‐related thiamine deficiency increases the acute mortality, known as early mortality syndrome, of salmonines from some of the Great Lakes. The consequences of thiamine deficiency as measured at the egg stage for other important early life stage processes like growth, foraging efficiency, and predator avoidance that may also result in...
What does "water quality" mean?
Francis H. Chapelle, Paul M. Bradley, Peter B. McMahon, Bruce D. Lindsey
2009, Groundwater (47) 752-754
No abstract available....
Dual nitrate isotopes in dry deposition: Utility for partitioning NOx source contributions to landscape nitrogen deposition
E.M. Elliott, Carol Kendall, E.W. Boyer, Douglas A. Burns, Gary Lear, H.E. Golden, K. Harlin, A. Bytnerowicz, T.J. Butler, R. Glatz
2009, Journal of Geophysical Research: Biogeosciences (114)
Dry deposition is a major component of total atmospheric nitrogen deposition and thus an important source of bioavailable nitrogen to ecosystems. However, relative to wet deposition, less is known regarding the sources and spatial variability of dry deposition. This is in part due to difficulty in measuring dry deposition and...
BSSA: Worth thinking about
Andrew J. Michael
2009, Seismological Research Letters (80) 405-408
The Bulletin of the Seismological Society of America (BSSA) is a powerful community project that has helped us share the information necessary to keep our field moving forward since 1911. In some ways, BSSA is much like it has always been, and each issue provides us with a collection of...
Response to "comment on 'bioaccumulation of pharmaceuticals and other anthropogenic waste indicators in earthworms from agricultural soil amended with biosolid or swine manure'"
Chad A. Kinney, Edward T. Furlong, Dana W. Kolpin, Mark R. Burkhardt, Steven D. Zaugg, Stephen L. Werner, J.P. Bossio, Mark J. Benotti
2009, Environmental Science & Technology (43) 545-547
No abstract available. ...
Landscape features, standards, and semantics in U.S. national topographic mapping databases
Dalia Varanka
2009, Book, Proceedings of the International Conference on Advanced Geographic Information Systems and Web Services, GEOWS 2009
The objective of this paper is to examine the contrast between local, field-surveyed topographical representation and feature representation in digital, centralized databases and to clarify their ontological implications. The semantics of these two approaches are contrasted by examining the categorization of features by subject domains inherent to national topographic mapping....
Alligators and crocodiles as indicators for restoration of Everglades ecosystems
Frank J. Mazzotti, G. Ronnie Best, Laura A. Brandt, Michael S. Cherkiss, Brian M. Jeffery, Kenneth G. Rice
2009, Ecological Indicators (9) S137-S149
Alligators and crocodiles integrate biological impacts of hydrological operations, affecting them at all life stages through three key aspects of Everglades ecology: (1) food webs, (2) diversity and productivity, and (3) freshwater flow. Responses of crocodilians are directly related to suitability of environmental conditions and hydrologic change. Correlations between biological...
Introduction to "northern Gulf of Mexico ecosystem change and hazards susceptibility"
John C. Brock, Dawn L. Lavoie, Richard Z. Poore
2009, Geo-Marine Letters (29) 343-347
The northern Gulf of Mexico and its diverse natural resources are threatened by population and development pressure, and by the impacts of rising sea level and severe storms. In the wake of the devastating 2005 hurricane season, and in response to the complex management issues facing the region, the U.S....
Mapping products of Titan's surface
Katrin Stephan, Ralf Jaumann, Erich Karkoschka, Jason W. Barnes, Martin G. Tomasko, Elizabeth P. Turtle, Lucille Le Corre, Mirjam Langhans, Stephane Le Mouelic, Ralf D. Lorenz, Jason Perry
Robert H. Brown, Jean-Pierre Lebreton, editor(s)
2009, Book chapter, Titan from Cassini-Huygens
Remote sensing instruments aboard the Cassini spacecraft have been observed the surface of Titan globally in the infrared and radar wavelength ranges as well as locally by the Huygens instruments revealing a wealth of new morphological features indicating a geologically active surface. We present a summary of mapping products of...
Avian response to early tidal salt marsh restoration at former commercial salt evaporation ponds in San Francisco Bay, California, USA
Nicole D. Athearn, John Y. Takekawa, Joel Shinn
2009, Natural Resources and Environmental Issues (15) 77-86
Restoration of former commercial salt evaporation ponds in the San Francisco Bay estuary is intended to reverse a severe decline (>79%) in tidal salt marshes. San Francisco Bay is a critical migratory stopover site and wintering area for shorebirds and waterfowl, and salt ponds are important high tide roosting and...
Historical abundance and morphology of Didymosphenia species in Naknek Lake, Alaska
D.P. Pite, K.A. Lane, A.K. Hermann, S. A. Spaulding, B. P. Finney
2009, Conference Paper, Acta Botanica Croatica
Since the 1980s, nuisance blooms of Didymosphenia geminata (Lyngbye) M. Schmidt have been documented in sites that are warmer and more mesotrophic than historical records indicate. While the invasion of D. geminata in New Zealand is well documented, it is less clear whether nuisance blooms in North America are a...
Relation of urbanization to stream fish assemblages and species traits in nine metropolitan areas of the United States
Larry R. Brown, M. Brian Gregory, Jason T. May
2009, Urban Ecosystems (12) 391-416
We examined associations of fish assemblages and fish traits with urbanization and selected environmental variables in nine major United States metropolitan areas. The strongest relations between fishes and urbanization occurred in the metropolitan areas of Atlanta, Georgia; Birmingham, Alabama; Boston, Massachusetts; and Portland, Oregon. In these areas, environmental variables with...
Mercury concentrations and loads in a large river system tributary to San Francisco Bay, California, USA
N. David, L.J. McKee, F.J. Black, A.R. Flegal, C.H. Conaway, D. H. Schoellhamer, N. K. Ganju
2009, Environmental Toxicology and Chemistry (28) 2091-2100
In order to estimate total mercury (HgT) loads entering San Francisco Bay, USA, via the Sacramento-San Joaquin River system, unfiltered water samples were collected between January 2002 and January 2006 during high flow events and analyzed for HgT. Unfiltered HgT concentrations ranged from 3.2 to 75 ng/L and showed a...
The post-Mazama northwest rift zone eruption at Newberry Volcano, Oregon
Daniele McKay, Julie M. Donnelly-Nolan, Robert A. Jensen, Duane E. Champion
Jim O’Connor, Rebecca Dorsey, Ian Madin, editor(s)
2009, Book chapter, Volcanoes to vineyards: Geologic field trips through the dynamic landscape of the Pacific Northwest (GSA Field Guides 15)
The northwest rift zone (NWRZ) eruption took place at Newberry Volcano ~7000 years ago after the volcano was mantled by tephra from the catastrophic eruption that destroyed Mount Mazama and produced the Crater Lake caldera. The NWRZ eruption produced multiple lava flows from a variety of vents including cinder cones,...
Histopathologic criteria to confirm white-nose syndrome in bats
Carol U. Meteyer, Elizabeth L. Buckles, David S. Blehert, Alan C. Hicks, David E. Green, Valerie I. Shearn-Bochsler, Nancy J. Thomas, Andrea Gargas, Melissa Behr
2009, Journal of Veterinary Diagnostic Investigation (21) 411-414
White-nose syndrome (WNS) is a cutaneous fungal disease of hibernating bats associated with a novel Geomyces sp. fungus. Currently, confirmation of WNS requires histopathologic examination. Invasion of living tissue distinguishes this fungal infection from those caused by conventional transmissible dermatophytes. Although fungal hyphae penetrate the connective tissue of glabrous skin...
Cataclysms and controversy: Aspects of the geomorphology of the Columbia River Gorge
Jim O’Connor, Scott Burns
Ian Madin, Rebecca Dorsey, editor(s)
2009, Book chapter, Volcanoes to vineyards: Geologic field trips through the dynamic landscape of the Pacific Northwest
Landslides and floods of lava and water tremendously affected the Columbia River during its long history of transecting the Cascade Volcanic Arc. This field trip touches on aspects of the resulting geology of the scenic Columbia River Gorge, including the river-blocking Bonneville landslide of ~550 years ago and the great...
Chapter 3 - Phenomenology of tsunamis: Statistical properties from generation to runup
Eric L. Geist
2009, Advances in Geophysics (51) 107-169
Observations related to tsunami generation, propagation, and runup are reviewed and described in a phenomenological framework. In the three coastal regimes considered (near-field broadside, near-field oblique, and far field), the observed maximum wave amplitude is associated with different parts of the tsunami wavefield. The maximum amplitude in the near-field broadside...
Performance of temperature and dissolved oxygen criteria to predict habitat use by lake trout (Salvelinus namaycush)
J.M. Plumb, P.J. Blanchfield
2009, Canadian Journal of Fisheries and Aquatic Sciences (66) 2011-2023
We compared theoretical habitat volumes, determined from traditional combinations of temperature and dissolved oxygen concentration (DO) boundaries, with in situ habitat use by acoustically tagged lake trout (Salvelinus namaycush). The widely used criteria of 8–12 °C underestimated lake trout habitat use by 68%–80%. Instead, combined temperature (<12 or 15 °C)...
After the disaster: The hydrogeomorphic, ecological, and biological responses to the 1980 eruption of Mount St. Helens, Washington
Jon J. Major, Charlie Crisafulli, John Bishop
2009, Book chapter, Volcanoes to vineyards: Geologic field trips through the dynamic landscape of the Pacific Northwest
The 1980 eruption of Mount St. Helens caused instantaneous landscape disturbance on a grand scale. On 18 May 1980, an ensemble of volcanic processes, including a debris avalanche, a directed pyroclastic density current, voluminous lahars, and widespread tephra fall, abruptly altered landscape hydrology and geomorphology, and created distinctive disturbance zones...
Sediment losses and gains across a gradient of livestock grazing and plant invasion in a cool, semi-arid grassland, Colorado Plateau, USA
Jayne Belnap, Richard L. Reynolds, Marith C. Reheis, Susan L. Phillips, Frank Urban, Harland L. Goldstein
2009, Aeolian Research (1) 27-43
Large sediment fluxes can have significant impacts on ecosystems. We measured incoming and outgoing sediment across a gradient of soil disturbance (livestock grazing, plowing) and annual plant invasion for 9 years. Our sites included two currently ungrazed sites: one never grazed by livestock and dominated by perennial grasses/well-developed biocrusts and...
Experimental infection of a North American raptor, American kestrel (Falco sparverius), with highly pathogenic avian influenza virus (H5N1)
Jeffrey S. Hall, Hon S. Ip, J. C. Franson, C. Meteyer, Sean W. Nashold, Joshua L. Teslaa, J. French, P. Redig, C. Brand
2009, PLoS ONE (4)
Several species of wild raptors have been found in Eurasia infected with highly pathogenic avian influenza virus (HPAIV) subtype H5N1. Should HPAIV (H5N1) reach North America in migratory birds, species of raptors are at risk not only from environmental exposure, but also from consuming infected birds and carcasses. In this...
Elements of an improved model of debris-flow motion
R.M. Iverson
2009, Conference Paper, AIP Conference Proceedings
A new depth-averaged model of debris-flow motion describes simultaneous evolution of flow velocity and depth, solid and fluid volume fractions, and pore-fluid pressure. Non-hydrostatic pore-fluid pressure is produced by dilatancy, a state-dependent property that links the depth-averaged shear rate and volumetric strain rate of the granular phase. Pore-pressure changes caused...
Re-greening the Sahel: Farmer-led innovation in Burkina Faso and Niger
Chris Reij, Melinda Smale, G. Gray Tappan
David J. Spielman, Rajul Pandya-Lorch, editor(s)
2009, Book chapter, Millions fed: Proven successes in agricultural development
The Sahel—the belt of land that stretches across Africa on the southern edge of the Sahara—has always been a tough place to farm. Rainfall is low and droughts are frequent. The crust of hard soil is, at times, almost impermeable, and harsh winds threaten to sweep away everything in their...
Evaluating wildlife response to coastal dune habitat restoration in san francisco, california
W. Russell, J. Shulzitski, A. Setty
2009, Ecological Restoration (27) 439-448
The vast dune system that once dominated the entire western half of the San Francisco peninsula in California has been reduced to a few fragments that conserve locally threatened plant and animal species. We measured the effects of ongoing restoration efforts on wildlife abundance and diversity on one of the...
Biodegradation of 17β-estradiol, estrone, and testosterone in stream sediments
P. M. Bradley, F. H. Chapelle, L. B. Barber, P.B. McMahon, J.L. Gray, D.W. Kolpin
2009, Conference Paper, In Situ and On-Site Bioremediation-2009: Proceedings of the 10th International In Situ and On-Site Bioremediation Symposium
The release of endocrine-disrupting chemicals (EDCs) in wastewater treatment plant (WWTP) effluent poses a significant threat to the ecology of surface water receptors, due to impacts on the hormonal control, sexual development, reproductive success and community structure of the indigenous aquatic organisms and associated wildlife. Among the EDCs commonly observed...
