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Page 2545, results 63601 - 63625

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Oceanographic conditions structure forage fishes into lipid-rich and lipid-poor communities in lower Cook Inlet, Alaska, USA
Alisa A. Abookire, John F. Piatt
2005, Marine Ecology Progress Series (287) 229-240
Forage fishes were sampled with a mid-water trawl in lower Cook Inlet, Alaska, USA, from late July to early August 1996 to 1999. We sampled 3 oceanographically distinct areas of lower Cook Inlet: waters adjacent to Chisik Island, in Kachemak Bay, and near the Barren Islands. In 163 tows using...
Estimation of inorganic species aquatic toxicity
James P. Hickey
Gary K. Ostrander, editor(s)
2005, Book chapter, Techniques in aquatic toxicology
The acute aquatic toxicities (narcoses) for a range of organism types may be estimated with LSER for a large number of inorganic and organometal species, many with an accuracy at or within an order of magnitude. Optimum estimations make use of a bioavailable metal fraction and a more accurate...
Protecting visitor health in beach waters of Lake Michigan: problems and opportunities
Meredith B. Nevers, Richard L. Whitman
T. Edsall, M. Munawar, editor(s)
2005, Book chapter, State of Lake Michigan: Ecology, Health, and Management
In this paper, we will review past research on Escherichia coli (E. Coli) and its relationship to recreational waters. Further, we will discuss current monitoring research and future prospects for improving monitoring efficiency to protect the health of beachgoers....
Snow-fed streamflow timing at different basin scales: Case study of the Tuolumne River above Hetch Hetchy, Yosemite, California
J.D. Lundquist, M. D. Dettinger, D.R. Cayan
2005, Water Resources Research (41) 1-14
Diurnal cycles in snow‐fed streams provide a useful technique for measuring the time it takes water to travel from the top of the snowpack, where snowmelt typically peaks in the afternoon, to the river gauge, where the daily maximum flows may arrive many hours later. Hourly stage measurements in nested...
The sterile-male-release technique in Great Lakes sea lamprey management
Roger A. Bergstedt, Michael B. Twohey
2005, Report
The parasitic sea lamprey (Petromyzon marinus) has been a serious pest since its introduction into the Great Lakes, where it contributed to severe imbalances in the fish communities by selectively removing large predators (Smith 1968; Christie 1974; Schneider et al.1996). Since the 1950s, restoration and maintenance of predator-prey balance...
The Circumpolar Arctic vegetation map
Donald A. Walker, Martha K. Raynolds, F.J.A. Daniels, E. Einarsson, A. Elvebakk, W.A. Gould, A.E. Katenin, S.S. Kholod, C. J. Markon, E. S. Melnikov, N.G. Moskalenko, Stephen S. Talbot, B.A. Yurtsev, L.C. Bliss, S.A. Edlund, S.C. Zoltai, M. Wilhelm, C. Bay, G. Gudjonsson, G.V. Ananjeva, D.S. Drozdov, L.A. Konchenko, Y.V. Korostelev, O.E. Ponomareva, N.V. Matveyeva, I.N. Safranova, R. Shelkunova, A.N. Polezhaev, B.E. Johansen, H.A. Maier, D.F. Murray, Michael D. Fleming, N.G. Trahan, T.M. Charron, S.M. Lauritzen, B.A. Vairin
2005, Journal of Vegetation Science (16) 267-282
Question: What are the major vegetation units in the Arctic, what is their composition, and how are they distributed among major bioclimate subzones and countries? Location: The Arctic tundra region, north of the tree line. Methods: A photo-interpretive approach was used to delineate the vegetation onto an Advanced Very High...
Variation in fire regimes of the Rocky Mountains: Implications for avian communities and fire management
Victoria A. Saab, Hugo D. W. Powell, Natasha B. Kotliar, Karen R. Newlon
Victoria A. Saab, Hugo D. W. Powell, editor(s)
2005, Book chapter, Fire and avian ecology in North America (Studies in Avian Biology No. 30)
Information about avian responses to fire in the U.S. Rocky Mountains is based solely on studies of crown fires. However, fire management in this region is based primarily on studies of low-elevation ponderosa pine (Pinus ponderosa) forests maintained largely by frequent understory fires. In contrast to both of these trends,...
Seasonality of diel cycles of dissolved trace-metal concentrations in a Rocky Mountain stream
D. A. Nimick, T.E. Cleasby, R. Blaine McCleskey
2005, Environmental Geology (47) 603-614
Substantial diel (24-h) cycles in dissolved (0.1-μm filtration) metal concentrations were observed during summer low flow, winter low flow, and snowmelt runoff in Prickly Pear Creek, Montana. During seven diel sampling episodes lasting 34–61.5 h, dissolved Mn and Zn concentrations increased from afternoon minimum values to maximum values shortly after sunrise....