The South China sea margins: Implications for rifting contrasts
D.E. Hayes, S.S. Nissen
2005, Earth and Planetary Science Letters (237) 601-616
Implications regarding spatially complex continental rifting, crustal extension, and the subsequent evolution to seafloor spreading are re-examined for the northern and southern-rifted margins of the South China Sea. Previous seismic studies have shown dramatic differences in the present-day crustal thicknesses as the manifestations of the strain experienced during the rifting...
Comparison of shelf currents off central California prior to and during the 1997-1998 El Nino
H. F. Ryan, M.A. Noble
2005, Continental Shelf Research (25) 1787-1804
Moored current, temperature, salinity, and pressure data were collected at three sites that transect the narrow continental shelf offshore of Davenport, CA, starting in August 1996 and continuing to the spring of 1998. This data set allowed a comparison of oceanographic conditions prior to (8/96-3/97) and during (8/97-3/98) the last...
Individual variation in staging and timing of spring migration of Pacific common eiders in Alaska
Margaret R. Petersen
2005, Conference Paper, Second North America Sea Duck Conference
Timing of migration and characterization of migration patterns of birds are usually based on dates of peak migration to and from staging, wintering, and breeding areas used by the bulk of a species. For Pacific common eiders (Somateria mollissima v-nigrum), as well as other species, the timing of migration into...
Aniakchak sockeye salmon investigations
Troy R. Hamon, Scott A. Pavey, Joe L. Miller, Jennifer L. Nielsen
2005, Alaska Park Science (3) 35-39
Aniakchak National Monument and Preserve provides unusual and dramatic landscapes shaped by numerous volcanic eruptions, a massive flood, enormous landslides, and ongoing geological change. The focal point of the monument is Aniakchak Caldera, a restless volcano that embodies the instability of the Alaska Peninsula. This geological instability creates a dynamic...
Impact of land use and land cover change on groundwater recharge and quality in the southwestern US
Bridget R. Scanlon, Robert C. Reedy, David A. Stonestrom, David E. Prudic, Kevin F. Dennehy
2005, Global Change Biology (11) 1577-1593
Humans have exerted large‐scale changes on the terrestrial biosphere, primarily through agriculture; however, the impacts of such changes on the hydrologic cycle are poorly understood. The purpose of this study was to test the hypothesis that the conversion of natural rangeland ecosystems to agricultural ecosystems impacts the subsurface portion of...
Long-term growth and succession in restored and natural mangrove forests in southwestern Florida
C.E. Proffitt, D.J. Devlin
2005, Wetlands Ecology and Management (13) 531-551
We compared colonization, growth and succession from 1989 to 2000 in a restored mangrove site and in gap and closed canopy sites in a natural mangrove forest. The restored site was created in 1982 and planted with Rhizophora mangle (???2 m-2) propagules. By 1989, Laguncularia racemosa, with densities up to...
Wind River Watershed Project: flow, temperature, and habitat conditions. Annual report April 2002-March 2003
I.G. Jezorek, P.J. Connolly, K. Marens
2005, Report
Abstract not available...
Three-dimensional behavior and passage of juvenile salmonids at The Dalles Dam, 2004
K.M Cash, D.M Faber, T.W Hatton, E.C. Jones, R.J. Magie, N.M. Swyers, R.K. Burns, M.D Sholtis, S.A. Zimmerman, J.S. Hughes, T.L. Gilbride, N.S. Adams, D.W. Rondorf
2005, Report
Abstract not available ...
The effects of summer flow augmentation on the migratory behavior and survival of juvenile Snake River fall Chinook salmon. Annual report 2003
Kenneth F. Tiffan, Craig A. Haskell, William P. Connor
2005, Report
This report summarizes results of research activities conducted in 2002 and years previous to aid in the management and recovery of fall chinook salmon Oncorhynchus tshawytscha in the Columbia River basin. The report is divided into self-standing chapters. For detailed summaries, we refer the reader to the abstracts given on...
Lower Methow tributaries effectiveness monitoring study: Study plan 2004-2008
P.J. Connolly
2005, Report
No abstract available ...
Assessment of low-level water chemistry in selected streams of the Washougal, Lewis, and Winder River watersheds, 2003 final report
M.G. Mesa, C.M Magie
2005, Report
No abstract available ...
Seed germination of Sierra Nevada postfire chaparral species
Jon E. Keeley, Thomas W. McGinnis, Kim A. Bollens
2005, Madroño (52) 175-181
The California chaparral community has a rich flora of species with different mechanisms for cuing germination to postfire conditions. Here we report further germination experiments that elucidate the response of several widespread shrub species whose germination response was not clear and include other species from the Sierra Nevada, which have...
Mineral resources and consumption in the twenty-first century
W. David Menzie, Donald A. Singer, DeYoung Jr.
R.D. Simpson, M.A. Toman, R.U. Ayres, editor(s)
2005, Book chapter, Scarcity and growth revisited: natural resources and the environment in the new millennium
Modern societies are highly dependent upon energy and mineral resources to produce and deliver the material goods and even the services of everyday life. Although societies' dependence upon fossil fuels is evident and understood by much of the population, few people are as well informed about their dependence upon a...
Use of isotopes, age-dating, and numerical simulation to evaluate source histories and transport of NO3- to public supply wells in principal aquifers of the United States
P.B. McMahon, J.K. Bohlke, C. Brown, K. Burow, C. A. Crandall, Matthew K. Landon
2005, Conference Paper, Proceedings of the 6th International Symposium on Applied Isotope Geochemistry
No abstract available. ...
Population genetic structure in migratory sandhill cranes and the role of Pleistocene glaciations
Kenneth L. Jones, Gary Krapu, David A. Brandt, Mary V. Ashley
2005, Molecular Ecology (14) 2645-2657
Previous studies of migratory sandhill cranes (Grus canadensis) have made significant progress explaining evolution of this group at the species scale, but have been unsuccessful in explaining the geographically partitioned variation in morphology seen on the population scale. The objectives of this study were to assess the population structure and...
Embryonic developmental progression in lake trout (Salvelinus namaycush) (Walbaum, 1792) and its relation to lake temperature
Jeffrey D. Allen, Glenn K. Walker, Jean V. Adams, S. Jerrine Nichols, Carol C. Edsall
2005, Journal of Great Lakes Research (31) 187-209
Developmental progression of lake trout (Salvelinus namaycush) embryos was examined with light and scanning electron microscopy. From this examination, key developmental stages were described in detail. The key developmental stages were then applied to individual lake trout egg lots incubated in constant temperatures of 2, 4, 6, 8, and 10°C....
Spacing and physical habitat selection patterns by peregrine falcons in central West Greenland
Catherine S Wightman, Mark R. Fuller
2005, The Wilson Bulletin (117) 226-236
We examined nest-site spacing and selection of nesting cliffs by Peregrine Falcons (Falco peregrinus) in central West Greenland. Our sample included 67 nesting cliffs that were occupied at least once between 1972 and 1999 and 38 cliffs with no known history of Peregrine Falcon occupancy. We measured 29 eyrie, cliff,...
Effects of biodiversity on ecosystem functioning: a consensus of current knowledge
D.U. Hooper, F. S. Chapin III, J.J. Ewel, A. Hector, P. Inchausti, S. Lavorel, J.H. Lawton, D.M. Lodge, M. Loreau, S. Naeem, B. Schmid, H. SetSlS, A.J. Symstad, J. Vandermeer, D.A. Wardle
2005, Ecological Monographs (75) 3-35
Humans are altering the composition of biological communities through a variety of activities that increase rates of species invasions and species extinctions, at all scales, from local to global. These changes in components of the Earth's biodiversity cause concern for ethical and aesthetic reasons, but they also have a strong...
Sensitivity analysis of conservative and reactive stream transient storage models applied to field data from multiple-reach experiments
M.N. Gooseff, K.E. Bencala, D.T. Scott, R.L. Runkel, Diane M. McKnight
2005, Advances in Water Resources (28) 479-492
The transient storage model (TSM) has been widely used in studies of stream solute transport and fate, with an increasing emphasis on reactive solute transport. In this study we perform sensitivity analyses of a conservative TSM and two different reactive solute transport models...
Ecology of the Lake Huron fish community, 1970-1999
Norine E. Dobiesz, David A. McLeish, Randy L. Eshenroder, James R. Bence, Lloyd C. Mohr, Mark P. Ebener, Thomas F. Nalepa, Aaron P. Woldt, James E. Johnson, Ray L. Argyle, Joseph C. Makarewicz
2005, Canadian Journal of Fisheries and Aquatic Sciences (62) 1432-1451
We review the status of the Lake Huron fish community between 1970 and 1999 and explore the effects of key stressors. Offshore waters changed little in terms of nutrient enrichment, while phosphorus levels declined in inner Saginaw Bay. Introduced mussels (Dreissena spp.) proliferated and may have caused a decline in Diporeia spp. This...
Effects of selected polybrominated diphenyl ether flame retardants on lake trout (Salvelinus namaycush) thymocyte viability, apoptosis, and necrosis
Kelly L. Birchmeier, Kimberly A. Smith, Dora R. Passino-Reader, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Geneva M. Omann
2005, Environmental Toxicology and Chemistry (24) 1518-1522
Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (<1...
Diel behavior of iron and other heavy metals in a mountain stream with acidic to neutral pH: Fisher Creek, Montana, USA
C.H. Gammons, D. A. Nimick, S.R. Parker, T.E. Cleasby, R. Blaine McCleskey
2005, Geochimica et Cosmochimica Acta (69) 2505-2516
Three simultaneous 24-h samplings at three sites over a downstream pH gradient were conducted to examine diel fluctuations in heavy metal concentrations in Fisher Creek, a small mountain stream draining abandoned mine lands in Montana. Average pH values at the upstream (F1), middle (F2),...
Hydrogeomorphic classification for Great Lakes coastal wetlands
Dennis A. Albert, Douglas A. Wilcox, Joel W. Ingram, Todd A. Thompson
2005, Journal of Great Lakes Research (31) 129-146
A hydrogeomorphic classification scheme for Great Lakes coastal wetlands is presented. The classification is hierarchical and first divides the wetlands into three broad hydrogeomorphic systems, lacustrine, riverine, and barrier-protected, each with unique hydrologic flow characteristics and residence time. These systems are further subdivided into finer geomorphic types based on physical...
Occurrence of Cyathocephalus truncatus (Cestoda) in fishes of the Great Lakes with emphasis on its occurrence in round gobies (Neogobius melanostomus) from Lake Huron
John R. P. French III, Patrick M. Muzzall, Jean V. Adams, Kendra L. Johnson, Angela E. Flores, Andrea M. Winkel
2005, Journal of Great Lakes Research (31) 405-413
Cyathocephalus truncatus is a pathogenic cestode that is common in many Laurentian Great Lakes fish species, but the depth distribution of this cestode has not been studied. Cyathocephalus truncatus has been reported from 21 fish species and one hybrid representing seven orders and nine families in Lakes Superior, Michigan, Huron, and Ontario. We...
Alunite in the Pascua-Lama high-sulfidation deposit: Constraints on alteration and ore deposition using stable isotope geochemistry
C. L. Deyell, R. Leonardson, R. O. Rye, J. F. H. Thompson, T. Bissig, D. R. Cooke
2005, Economic Geology (100) 131-148
The Pascua-Lama high-sulfidation system, located in the El Indio-Pascua belt of Chile and Argentina, contains over 16 million ounces (Moz) Au and 585 Moz Ag. The deposit is hosted primarily in granite rocks of Triassic age with mineralization occurring in several discrete Miocene-age phreatomagmatic breccias and related fracture networks. The...
