Exposure of unionid mussels to electric current: Assessing risks associated with electrofishing
F.M. Holliman, T.J. Kwak, W.G. Cope, Jay F. Levine
2007, Transactions of the American Fisheries Society (136) 1593-1606
Electric current is routinely applied in freshwater for scientific sampling of fish populations (i.e., electrofishing). Freshwater mussels (families Margaritiferidae and Unionidae) are distributed worldwide, but their recent declines in diversity and abundance constitute an imperilment of global significance. Freshwater mussels are not targeted for capture by electrofishing, and any exposure...
Fire risk in San Diego County, California: A weighted Bayesian model approach
Crystal A. Kolden, Timothy J. Weigel
2007, California Geographer (47) 42-60
Fire risk models are widely utilized to mitigate wildfire hazards, but models are often based on expert opinions of less understood fire-ignition and spread processes. In this study, we used an empirically derived weights-of-evidence model to assess what factors produce fire ignitions east of San Diego, California. We created and...
Mercury in sediments, Alviso and Eden Landing salt ponds, south San Francisco Bay, California
A.K. Miles, M.A. Ricca, S.E. Spring, C. Morris, C. Wilcox, T. Maurer
2007, Conference Paper, Proceedings, Society of Wetland Scientists International Conference
No abstract available....
Tower counts
Carol Ann Woody
2007, Book chapter, Salmonid Field Protocols Handbook: Techniques for Assessing Status and Trends in Salmon and Trout Populations
Counting towers provide an accurate, low-cost, low-maintenance, low-technology, and easily mobilized escapement estimation program compared to other methods (e.g., weirs, hydroacoustics, mark-recapture, and aerial surveys) (Thompson 1962; Siebel 1967; Cousens et al. 1982; Symons and Waldichuk 1984; Anderson 2000; Alaska Department of Fish and Game 2003). Counting tower data has...
Assessment of marine-derived nutrients in the Copper River Delta, Alaska, using natural abundance of the stable isotopes of nitrogen, sulfur, and carbon
Thomas C. Kline, Carol Ann Woody, Mary Anne Bishop, Sean P. Powers, E. Eric Knudsen
2007, American Fisheries Society Symposium (54) 51-60
We performed nitrogen, sulfur, and carbon stable isotope analysis (SIA) on maturing and juvenile anadromous sockeye and coho salmon, and periphyton in two Copper River delta watersheds of Alaska to trace salmonderived nutrients during 2003–2004. Maturing salmon were isotopically enriched relative to alternate freshwater N, S, and C sources as...
Efficiently estimating salmon escapement uncertainty using systematically sampled data
Joel H. Reynolds, Carol Ann Woody, Nancy E. Gove, Lowell F. Fair
2007, American Fisheries Society Symposium (54) 121-129
Fish escapement is generally monitored using nonreplicated systematic sampling designs (e.g., via visual counts from towers or hydroacoustic counts). These sampling designs support a variety of methods for estimating the variance of the total escapement. Unfortunately, all the methods give biased results, with the magnitude of the bias being determined...
Climate matching as a tool for predicting potential North American spread of Brown Treesnakes
Gordon H. Rodda, Robert N. Reed, Catherine S. Jarnevich
G.W. Witmer, W. C. Pitt, K.A. Fagerstone, editor(s)
2007, Conference Paper, Managing Vertebrate Invasive Species – Proceedings of a Symposium
Climate matching identifies extralimital destinations that could be colonized by a potential invasive species on the basis of similarity to climates found in the species’ native range. Climate is a proxy for the factors that determine whether a population will reproduce enough to offset mortality. Previous climate matching models (e.g.,...
Development of a murre (Uria spp.) egg control material
Stacy S. Vander Pol, M.B. Ellisor, Rebecca S. Pugh, P.R. Becker, D.L. Poster, M.M. Schantz, S.D. Leigh, B.J. Wakeford, David G. Roseneau, Kristin S. Simac
2007, Conference Paper, Analytical and Bioanalytical Chemistry
The Seabird Tissue Archival and Monitoring Project (STAMP) is a collaborative Alaska-wide effort by the US Fish and Wildlife Service's Alaska Maritime National Wildlife Refuge (USFWS/AMNWR), the US Geological Survey's Biological Resources Division (USGS/BRD), the Bureau of Indian Affairs Alaska Region Subsistence Branch (BIA/ARSB), and the National Institute of Standards...
Qualitative evaluation of rock weir field performance and failure mechanisms
David M. Mooney, Christopher L. Holmquist-Johnson, Elaina Holburn
2007, Report
River spanning loose-rock structures provide sufficient head for irrigation diversion, permit fish passage over barriers, protect banks, stabilize degrading channels, activate side channels, reconnect floodplains, and create in-channel habitat. These structures are called by a variety of names including rock weirs, alphabet (U-, A-, V-, W-) weirs, Jhooks, and rock...
Mammal inventories for eight National Parks in the Southern Colorado Plateau Network
Michael A. Bogan, Keith Geluso, Shauna Haymond, Ernest W. Valdez
2007, Natural Resource Technical Report NPS/SCPN/NRTR-2007/054
Historically, the Colorado Plateau has been the subject of many geological and biological explorations. J. W. Powell explored and mapped the canyon country of the Colorado River in 1869 (Powell 1961). C. H. Merriam, V. Bailey, M. Cary, and other employees of the Bureau of Biological Survey conducted biological explorations...
USGS National Wildlife Health Center's Quarterly Mortality Report
K. A. Converse, G. McLaughlin
2007, Supplement to the Journal of Wildlife Diseases (43)
USGS National Wildlife Health Center's Quarterly Wildlife Mortality Report (North America)
M. Jankowski, K. Schuler, J. Bradsby
2007, Supplement to the Journal of Wildlife Diseases (43)
Multi-scale reservoir modeling as an integrated assessment tool for geo-sequestration in the San Juan Basin
G. Young, D. Haerer, G. Bromhal, S. Reeves
2007, Conference Paper, 2007 AIChE Annual Meeting
The Southwestern Regional Partnership on CO2 Sequestration conducted an Enhanced Coalbed Methane (ECBM)/Carbon Storage Pilot in the San Juan Basin as part of the ongoing DOE/NETL Carbon Capture and Storage Program. The primary goal of this pilot is to demonstrate the efficacy of using CO2 to enhance coalbed methane recovery...
Mangrove recruitment after forest disturbance is facilitated by herbaceous species in the Caribbean
K.L. McKee, J.E. Rooth, Ilka C. Feller
2007, Ecological Applications (17) 1678-1693
Plant communities along tropical coastlines are often affected by natural and human disturbances, but little is known about factors influencing recovery. We focused on mangrove forests, which are among the most threatened ecosystems globally, to examine how facilitation by herbaceous vegetation might improve forest restoration after disturbance. We specifically investigated...
Prediction of lethal/effective concentration/dose in the presence of multiple auxiliary covariates and components of variance
S. Gutreuter, M.A. Boogaard
2007, Environmental Toxicology and Chemistry (26) 1978-1986
Predictors of the percentile lethal/effective concentration/dose are commonly used measures of efficacy and toxicity. Typically such quantal-response predictors (e.g., the exposure required to kill 50% of some population) are estimated from simple bioassays wherein organisms are exposed to a gradient of several concentrations of a single agent. The toxicity of...
Sources of speciated atmospheric mercury at a residential neighborhood impacted by industrial sources
H. Manolopoulos, D.C. Snyder, James J Schauer, J.S. Hill, J.R. Turner, Mark L. Olson, David P. Krabbenhoft
2007, Environmental Science & Technology (41) 5626-5633
Speciated measurements of atmospheric mercury plumes were obtained at an industrially impacted residential area of East St. Louis, IL. These plumes were found to result in extremely high mercury concentrations at ground level that were composed of a wide distribution of mercury species. Ground level concentrations as high as 235...
Gravity and magnetic studies to characterize the geologic framework of the Spring Valley region
Edward A. Mankinen
2007, Book chapter, Regional Tour of the Carbonate System Guidebook
No abstract available....
Comprehensive characterization of atmospheric organic matter in Fresno, California fog water
P. Herckes, J.A. Leenheer, J.L. Collett Jr.
2007, Environmental Science & Technology (41) 393-399
Fogwater collected during winter in Fresno (CA) was characterized by isolating several distinct fractions and characterizing them by infrared and nuclear magnetic resonance (NMR) spectroscopy. More than 80% of the organic matter in the fogwater was recovered and characterized. The most abundant isolated fractions were those comprised of volatile acids...
Occurrence of pesticides in water, sediment, and soil from the Yolo Bypass, California
Kelly L. Smalling, James L. Orlando, Kathryn Kuivila
2007, San Francisco Estuary and Watershed Science (5)
The objective of this study was to evaluate the potential sources of pesticides to the Yolo Bypass, including those that could potentially impact critical life stages of resident fish. To assess direct inputs during inundation, pesticide concentrations were analyzed in water and suspended and bed sediment samples collected from source...
Monitoring of Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Gerber and Clear Lake reservoirs 2005-2006
P.M. Barry, B.S. Hayes, E.C. Janney, R.S. Shively, A.C. Scott, C.D. Luton
2007, Report
n/a...
Net emissions of CH4 and CO2 in Alaska: Implications for the region's greenhouse gas budget
Q. Zhuang, J. M. Melillo, A. D. McGuire, D. W. Kicklighter, R.G. Prinn, P.A. Steudler, B.S. Felzer, S. Hu
2007, Ecological Applications (17) 203-212
We used a biogeochemistry model, the Terrestrial Ecosystem Model (TEM), to study the net methane (CH4) fluxes between Alaskan ecosystems and the atmosphere. We estimated that the current net emissions of CH4 (emissions minus consumption) from Alaskan soils are ???3 Tg CH 4/yr. Wet tundra ecosystems are responsible for 75%...
Estimating biomass of submersed vegetation using a simple rake sampling technique
K.P. Kenow, J.E. Lyon, R. K. Hines, A. Elfessi
2007, Hydrobiologia (575) 447-454
We evaluated the use of a simple rake sampling technique for predicting the biomass of submersed aquatic vegetation. Vegetation sampled from impounded areas of the Mississippi River using a rake sampling technique, was compared with vegetation harvested from 0.33-m2 quadrats. The resulting data were used to model the relationship between...
Silurian extension in the Upper Connecticut Valley, United States and the origin of middle Paleozoic basins in the Québec embayment
D.W. Rankin, R.A. Coish, R. D. Tucker, Z.X. Peng, S. A. Wilson, A.A. Rouff
2007, American Journal of Science (307) 216-264
Pre-Silurian strata of the Bronson Hill arch (BHA) in the Upper Connecticut Valley, NH-VT are host to the latest Ludlow Comerford Intrusive Suite consisting, east to west, of a mafic dike swarm with sheeted dikes, and an intrusive complex. The rocks are mostly mafic but with compositions ranging from gabbro...
Sexual selection drives speciation in an Amazonian frog
K.E. Boul, W.C. Funk, C.R. Darst, D.C. Cannatella, M.J. Ryan
2007, Proceedings of the Royal Society B: Biological Sciences (274) 399-406
One proposed mechanism of speciation is divergent sexual selection, whereby divergence in female preferences and male signals results in behavioural isolation. Despite the appeal of this hypothesis, evidence for it remains inconclusive. Here, we present several lines of evidence that sexual selection is driving behavioural isolation and speciation among populations...
Preface to the Madison declaration and critical synthesis papers on mercury pollution
James P. Hurley, David P. Krabbenhoft, James G. Wiener, Christopher L. Babiarz
2007, Ambio (36) 2-2
No abstract available....
