Changes in the chemistry of precipitation in the United States, 1981-1998
M.A. Nilles, B.E. Conley
2001, Water, Air, & Soil Pollution (130) 409-414
Regulatory measures in the United States, such as Title IV of the Clean Air Act Amendments of 1990, have primarily restricted sulfur dioxide emissions as a way to control acidic deposition. These restrictions, coupled with increasing concentrations of NH4+ in wet deposition in some regions of the U.S. and continued...
Neotropical migratory bird monitoring study at Marine Corps Base Camp Pendleton, California. Sixth Annual Progress Report, 2000
B.E. Kus, P.P. Beck
2001, Report
No abstract available at this time...
Duck populations as indicators of landscape condition in the Prairie Pothole Region
Jane E. Austin, Thomas K. Buhl, Glenn R. Guntenspergen, Wayne Norling, H. Thomas Sklebar
2001, Environmental Monitoring and Assessment (69) 29-48
The Prairie Pothole Region of the northern Great Plains is an important region for waterfowl production because of the abundance of shallow wetlands. The ecological significance of the region and impacts from intensive agriculture prompted the U.S. Environmental Protection Agency to select it as one of the first areas for...
Birth of the mountains : the geologic story of the southern Appalachian Mountains
Sandra H. B. Clark
2001, Report
Establishment of two invasive crustaceans (Copepoda: Harpacticoida) on the nearshore sands of Lake Michigan
Thomas G. Horvath, Richard L. Whitman, Laurel L. Last
2001, Canadian Journal of Fisheries and Aquatic Sciences (58) 1261-1264
Benthic copepods (Copepoda: Harpacticoida) in the nearshore sediments of southern Lake Michigan appear to be dominated by two new invasive species. We report the first occurrence in North America of Schizopera borutzkyi Montschenko, a native to the Danube River delta, and Heteropsyllus nr. nunni, likely a new species that...
Summary of Arroyo Toad Surveys in the Angeles and San Bernardino National Forests
C. Brown, L. Lyren, Robert N. Fisher
2001, Report
No abstract available at this time...
Prey: Thamnophis hammondii (Two-striped Garter Snake)
E.L. Ervin, Robert N. Fisher
2001, Herpetological Review (32) 265-266
Pox infection has occurrcd in mourning doves in at least 8 states on 12 separate occasions. Unsuccessful attempts were made to transmit both fowl pox (chicken isolate) and passerine pox (cowbird isolate) to mourning doves....
Unusual bacterioplankton community structure in ultra-oligotrophic Crater Lake
Ena Urbach, Kevin L. Vergin, Ariel Morse
2001, Limnology and Oceanography (46) 557-572
The bacterioplankton assemblage in Crater Lake, Oregon (U.S.A.), is different from communities found in other oxygenated lakes, as demonstrated by four small subunit ribosomal ribonucleic acid (SSU rRNA) gene clone libraries and oligonucleotide probe hybridization to RNA from lake water. Populations in the euphotic zone of this deep (589 m),...
New views of granular mass flows
R.M. Iverson, J.W. Vallance
2001, Geology (29) 115-118
Concentrated grain-fluid mixtures in rock avalanches, debris flows, and pyroclastic flows do not behave as simple materials with fixed rheologies. Instead, rheology evolves as mixture agitation, grain concentration, and fluid-pressure change during flow initiation, transit, and deposition. Throughout a flow, however, normal forces on planes parallel to the free upper...
Sexual segregation in Roosevelt Elk: Cropping rates and aggression in mixed sex groups
Floyd F. Weckerly, Mark A. Ricca, Katherin P. Meyer
2001, Journal of Mammalogy (82) 825-835
Few studies of sexual segregation in ruminants have tested widely invoked mechanisms of segregation in mixed-sex groups. In a sexually segregated population of Roosevelt elk (Cervus elaphus roosevelti), we examined if adult males had reduced intake of forage when in mixed-sex groups and if intersexual differences in aggression caused females...
Influence of basin and watershed characteristics on the nutrient chemistry of headwater streams in northern Idaho
B. R. Hossack, S.M. Struhs, K. Lohman
2001, Verhandlungen der Internationalen Vereinigung fur Theoretische und Angewandte Limnologie (27) 1095-1100
Redwood Creek, California, USA in Source to Sink Sedimentary Cascades in Pacific Rim Geo-systems
Mary Ann Madej, V. Ozaki
T. Marutani, G.J. Brierley, N.A. Trustrum, M. Page, editor(s)
2001, Report
No abstract available at this time...
An Analysis of Bank Erosion along the South Fork Eel River at Benbow Lake, California. A report to the California Department of Parks and Recreation. October, 2001. Arcata, CA
Mary Ann Madej
2001, Report
No abstract available at this time...
Restoring the estuary: implementation strategy of the San Francisco Bay Joint Venture
J.T. Steere, N. Schaefer
2001, Report
No abstract available at this time...
Clutch sizes and nests of tailed frogs from the Olympic Peninsula, Washington
R. Bruce Bury, P. Loafman, D. Rofkar, K. Mike
2001, Northwest Science (75) 419-422
In the summers 1995-1998, we sampled 168 streams (1,714 in of randomly selected 1-m bands) to determine distribution and abundance of stream amphibians in Olympic National Park, Washington. We found six nests (two in one stream) of the tailed frog, compared to only two nests with clutch sizes reported earlier for coastal regions....
Sarcocystis neurona infections in sea otter (Enhydra lutris): Evidence for natural infections with sarcocysts and transmission of infection to opossums (Didelphis virginiana)
J. P. Dubey, A.C. Rosypal, B.M. Rosenthal, N. J. Thomas, D. S. Lindsay, J.F. Stanek, S.M. Reed, W.J.A. Saville
2001, Journal of Parasitology (87) 1387-1393
Although Sarcocystis neurona has been identified in an array of terrestrial vertebrates, recent recognition of its capacity to infect marine mammals was unexpected. Here, sarcocysts from 2 naturally infected sea otters (Enhydra lutris) were characterized biologically, ultrastructurally, and genetically. DNA was extracted from frozen muscle of the first of these...
Disease emergence in birds: Challenges for the twenty-first century
Milton Friend, R. G. McLean, F. J. Dein
2001, The Auk (118) 290-303
The paper by Hartup et al. (2001) on House Finch (Carpodacus mexicanus) conjunctivitis is an example of the rapid geographic spread that can result from disease emergence in naïve populations. That event was neither novel nor transient relative to its occurrence or effects. Disease emergence and reemergence are hallmarks of...
The importance of defining technical issues in interagency environmental negotiations
B. L. Lamb, N. Burkardt, J. G. Taylor
2001, Public Works Management and Policy (5) 220-232
The role of technical clarity in successful multiparty negotiations was studied. Investigations involved in-depth interviews with the principal participants in six consultations conducted under the U.S. Federal Energy Regulatory Commission’s hydroelectric power project licensing procedures. Technical clarity was especially important in these cases because they concerned science-based questions. The principal...
Socio-ecological determinants of space utilization in the spotted hyena, Crocuta crocuta
E. E. Boydston
2001, Thesis
No abstract available at this time...
Movement Patterns of Coyotes and Bobcats Relative to Roads and Underpasses in the Chino Hills Area of Southern California
L.M. Lyren
2001, Thesis
No abstract available at this time...
Neotropical Migratory Bird Monitoring Study at Marine Corps Base Camp Pendleton, California. Case Springs Station, 1995-1999
B.E. Kus, P.P. Beck
2001, Report
No abstract available at this time...
Genetic and morphologic variation in Phyllodoce empetriformis and Phyllodoce glanduliflora (Ericaceae) in Mount Rainier National Park, Washington
Regina M. Rochefort, D. L. Peterson
2001, Canadian Journal of Botany (79) 179-191
Genetic and morphological diversity of Phyllodoce empetriformis (Sw.) D. Don and Phyllodoce glanduliflora (hook.) Cov. were surveyed in Mount Rainier National Park in the Cascade Mountains of Washington State. Paired populations at high and low elevations were sampled at three study areas between 1720- and 2451-m elevation. Allozyme analysis of four polymorphic loci indicates high...
Herpetofaunal Monitoring in MSCP Region of San Diego
C. Rochester, S. Hathaway, C. Brown, K. Pease, Robert N. Fisher
2001, Report
No abstract available at this time...
A probabilistic model for silver bioaccumulation in aquatic systems and assessment of human health risks
James Warila, Stuart Batterman, Dora R. Passino-Reader
2001, Environmental Toxicology and Chemistry (20) 432-441
Silver (Ag) is discharged in wastewater effluents and is also a component in a proposed secondary water disinfectant. A steady-state model was developed to simulate bioaccumulation in aquatic biota and assess ecological and human health risks. Trophic levels included phytoplankton, invertebrates, brown trout, and common carp. Uptake...
Development of mineral site counts to reliably index the Pacific Coast breeding population of band-tailed pigeons
Michael L. Casazza, J.L. Yee, C.T. Overton, D.L. Orthmeyer, D.R. Yparraguirre
2001, Report
No abstract available at this time...
