Distribution, abundance and habitat use of American White Pelicans in the Delta Region of Mississippi and along the Western Gulf of Mexico Coast
D.T. King, T.C. Michot
2002, Waterbirds (25) 410-416
Aerial surveys of American White Pelicans (Pelecanus erythrorhynchos) were conducted over coastal Louisiana and the delta region of Mississippi on 1-2 days during December, February, and April each year from 1997 to 1999. Additional surveys were conducted in coastal Texas and Mexico during January 1998 and 1999. The numbers,...
The use of models for a multiscaled ecological monitoring system: Chapter 6
Donald L. DeAngelis, L.J. Gross, E.J. Comiskey, Wolf M. Mooij, M.P. Nott
David E. Busch, Joel C. Trexler, editor(s)
2002, Book chapter, Monitoring ecosystems: Interdisciplinary approaches for evaluating ecoregional initiatives
No abstract available...
Leaf δ13C variability with elevation, slope aspect, and precipitation in the southwest United States
Peter K. Van De Water, Steven W. Leavitt, Julio L. Betancourt
2002, Oecologia (132) 332-343
Leaves from several desert and woodland species, including gymnosperms and angiosperms with both C3 and C4 physiology, were analyzed to detect trends in δ13Cleaf with elevation and slope aspect along two transects in southeastern Utah and south-central New Mexico, USA. The main difference between the two transects is the...
Comparison of subyearling fall chinook salmon's use of riprap revetments and unaltered habitats in Lake Wallula of the Columbia river
R.D. Garland, K.F. Tiffan, D.W. Rondorf, L.O. Clark
2002, North American Journal of Fisheries Management (22) 1283-1289
Subyearling fall chinook salmon's Oncorhynchus tshawytscha use of unaltered and riprap habitats in Lake Wallula of the Columbia River was determined with point abundance data collected by electrofishing in May 1994 and 1995. We documented the presence or absence of subyearlings at 277 sample sites and collected physical habitat information...
Ice core evidence of rapid air temperature increases since 1960 in alpine areas of the Wind River Range, Wyoming, United States
D. L. Naftz, D. D. Susong, P. F. Schuster, L.D. Cecil, M. D. Dettinger, R. L. Michel, C. Kendall
2002, Journal of Geophysical Research D: Atmospheres (107) ACL 3-1-ACL 3-16
Site-specific transfer functions relating delta oxygen 18 (δ18O) values in snow to the average air temperature (TA) during storms on Upper Fremont Glacier (UFG) were used in conjunction with δ18O records from UFG ice cores to reconstruct long-term trends in air temperature from alpine areas in the Wind River Range,...
Pintails on the move
M. Miller, J. Fleskes, D. Orthmeyer, John Y. Takekawa, Michael L. Casazza, B. Perry
2002, California Waterfowl 8, 10-13
No abstract available at this time...
Epizootiology and effect of avian pox on Hawaiian forest birds
Charles van Riper III, Sandra G. van Riper, Wallace R. Hansen
2002, The Auk (119) 929-942
We determined prevalence and altitudinal distribution of forest birds infected with avian pox at 16 locations on Hawaii, from sea level to tree line in mesic and xeric habitats, during 1977–1980. Isolates from lesions were cultured in the laboratory for positive identification of Poxvirus avium. Infected birds from the wild...
The role of hypothesis testing in wildlife science
Douglas H. Johnson
2002, Journal of Wildlife Management (66) 272-276
No abstract available....
Sea otter studies in Glacier Bay National Park and Preserve
James L. Bodkin, Kimberly A. Kloecker, George G. Esslinger, Daniel H. Monson, J.D. DeGroot, J. Doherty
2002, Report
Following translocations to the outer coast of Southeast Alaska in 1965, sea otters have been expanding their range and increasing in abundance. We began conducting surveys for sea otters in Cross Sound, Icy Strait, and Glacier Bay, Alaska in 1994, following initial reports (in 1993) of their presence in Glacier...
Miscellaneous methods for measuring matric or water potential
Bridget R. Scanlon, Brian J. Andraski, Jim Bilskie
Jacob H. Dane, G. Clarke Topp, editor(s)
2002, Soil Science Society of America Book Series 5.4-3.2.4
A variety of techniques to measure matric potential or water potential in the laboratory and in the field are described in this section. The techniques described herein require equilibration of some medium whose matric or water potential can be determined from previous calibration or can be measured directly. Under equilibrium...
Long-term patterns of diameter and basal area growth of old-growth Douglas-fir trees in western Oregon
Nathan Poage, J. C. Tappeiner II
2002, Canadian Journal of Forest Research (32) 1232-1243
Diameter growth and age data collected from stumps of 505 recently cut old-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees at 28 sample locations in western Oregon (U.S.A.) indicated that rapid early and sustained growth of old Douglas-fir trees were extremely important in terms of attaining large diameters at ages 100a??300...
Ascaphus trueii (Tailed frog). Albinism
Christopher A. Pearl, D.J. Major, R. Bruce Bury
2002, Herpetological Review (33) 123-123
No abstract available....
Geology, distribution, and classification of gold deposits in the western Qinling belt, central China
J. Mao, Yumin Qiu, R.J. Goldfarb, Z. Zhang, S. Garwin, R. Fengshou
2002, Mineralium Deposita (37) 352-377
Gold deposits of the western Qinling belt occur within the western part of the Qinling-Dabie-Sulu orogen, which is located between the Precambrian North China and Yangtze cratons and east of the Songpan-Ganzi basin. The early Paleozoic to early Mesozoic orogen can be divided into northern, central, and southern zones, separated...
Web-based distribution of geo-scientific models
S.L. Markstrom, G. McCabe, O. David
2002, Computers & Geosciences (28) 577-581
[No abstract available]...
In vitro toxicity and interactions of environmental contaminants (Arochlor 1254 and mercury) and immunomodulatory agents (lipopolysaccharide and cortisol) on thymocytes from lake trout (Salvelinus namaycush)
Gregory G. Miller, Leonard I. Sweet, Jean V. Adams, Geneva M. Omann, Dora R. Passino-Reader, Peter G. Meier
2002, Fish and Shellfish Immunology (13) 11-26
The immunotoxicity of chemical combinations commonly encountered by the lake trout (Salvelinus namaycush) immune system was the focus of this study. It was hypothesised that combinations of an environmental contaminant (mercuric chloride or Aroclor 1254) and an immunomodulatory agent (bacterial endotoxin or cortisol) might interact to produce a greater toxicity...
Sierra Nevada global change and fire research
N. Stephenson
2002, People, Land, and Water (8) 18
No abstract available at this time...
Impact of sensor's point spread function on land cover characterization: Assessment and deconvolution
C. Huang, J.R.G. Townshend, S. Liang, S.N.V. Kalluri, R.S. DeFries
2002, Remote Sensing of Environment (80) 203-212
Measured and modeled point spread functions (PSF) of sensor systems indicate that a significant portion of the recorded signal of each pixel of a satellite image originates from outside the area represented by that pixel. This hinders the ability to derive surface information from satellite images on a per-pixel basis....
Interpretation of K-Ar dates of illitic clays from sedimentary rocks aided by modeling
J. Srodon, Norbert Clauer, D.D.D. Eberl
2002, American Mineralogist (87) 1528-1535
K-Ar dates of illitic clays from sedimentary rocks may contain "mixed ages," i.e., may have ages that are intermediate between the ages of end-member events. Two phenomena that may cause mixed ages are: (1) long-lasting reaction during the burial illitization of smectite: and (2) physical mixing of detrital and diagenetic...
Measurement of Turbulence with Acoustic Doppler Current Profilers - Sources of Error and Laboratory Results
E.A. Nystrom, K. A. Oberg, C.R. Rehmann
Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B.Wahl T.L.Pugh C.A.Oberg K.A.Vermeyen T.B., editor(s)
2002, Conference Paper, Hydraulic Measurements and Experimental Methods
Acoustic Doppler current profilers (ADCPs) provide a promising method for measuring surface-water turbulence because they can provide data from a large spatial range in a relatively short time with relative ease. Some potential sources of errors in turbulence measurements made with ADCPs include inaccuracy of Doppler-shift measurements, poor temporal and...
Ecological potential of the Grand Calumet River basin
Richard L. Whitman, Meredith Becker Nevers, Shira Hammann, Philip B. Moy
2002, Proceedings of the Indiana Academy of Science (108/109) 163-175
The Grand Calumet River and watershed have been severely degraded by industrialization and urbanization, and yet several high-quality natural areas remain intact. The degraded condition presents numerous opportunities for pollution mitigation and ecosystem restoration. In many areas of the river and watershed, biological communities are characterized by low...
Interspecific interactions, habitat use, and management of double-crested cormorants (Phalacrocorax auritus) in the Laurentian Great Lakes: An introduction
Martin A. Stapanian
2002, Journal of Great Lakes Research (28) 119-124
The collection of seven papers in this journal issue represents a subset of the presentations from a special session at the 44th Annual Conference of the International Association for Great Lakes Research. The session, 'Management of the Double-crested Cormorant in the Laurentian Great Lakes Region,' was held on 12 June...
Geometry, slip distribution, and kinematics of surface rupture on the Sakarya fault segment during the 17 August 1999 İzmit, Turkey, earthquake
R.M. Langridge, Heidi D. Stenner, T. E. Fumal, S.A. Christofferson, T. K. Rockwell, R.D. Hartleb, J. Bachhuber, A.A. Barka
2002, Bulletin of the Seismological Society of America (92) 107-125
The Mw 7.4 17 August 1999 İzmit earthquake ruptured five major fault segments of the dextral North Anatolian Fault Zone. The 26-km-long, N86°W-trending Sakarya fault segment (SFS) extends from the Sapanca releasing step-over in the west to near the town of Akyazi in the east. The SFS emerges from Lake Sapanca as...
Overlap in offshore habitat use by double-crested cormorants and boaters in western Lake Erie
Martin A. Stapanian, Michael T. Bur
2002, Journal of Great Lakes Research (28) 172-181
Double-crested cormorants (Phalacrocorax auritus) and boats of 2 length classes (≤ 8 m and > 8 m) were counted from a boat along 31 established strip transects in western Lake Erie from 24 April to 1 September 2000. Each transect included only one of the following habitats:...
Burrow use by tiger salamanders (Ambystoma tigrinum) at a black-tailed prairie dog (Cynomys ludovicianus) town in southwestern South Dakota
J.J. Kolbe, B.E. Smith, D.M. Browning
2002, Herpetological Review (33) 95-99
Abstract has not been submitted...
Field estimate of net trophic transfer efficiency of PCBs to Lake Michigan chinook salmon from their prey
Charles P. Madenjian, Daniel V. O’Connor, Donald J. Stewart, Michael A. Miller, Robert G. Masnado
2002, Environmental Science & Technology (36) 5029-5033
Chinook salmon (Oncorhynchus tshawytscha) has been the predominant piscivore in Lakes Michigan, Huron, and Ontario since the 1970s, and therefore accurate quantification of its energy budget is needed for effective management of Great Lakes fisheries. A new approach of evaluating a fish bioenergetics model in the field involves field estimation...
