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184038 results.

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Page 2676, results 66876 - 66900

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Grey wolf Canis lupus Linnaeus, 1758
L.D. Mech, L. Boitani
Claudio Sillero-Zubiri, Michael Hoffmann, David W. Macdonald, editor(s)
2004, Book chapter, Canids: foxes, wolves, jackals, and dogs: status survey and conservation action plan
No abstract available....
Diet composition of common ravens across the urban-wildland interface of the West Mojave Desert
William B. Kristan, William I. Boarman, John J. Crayon
2004, Wildlife Society Bulletin (32) 244-253
Common ravens (Corvus corax) are human-subsidized scavengers and predators in the Mojave Desert. They have increased dramatically in number and have been implicated as contributors to the decline in desert tortoise (Gopherus agassizii) populations. Known patterns of increased fledging success near human developments suggested that food was the most likely...
Spatial and temporal multiyear sea ice distributions in the Arctic: A neural network analysis of SSM/I data, 1988-2001
G. I. Belchansky, David C. Douglas, I.V. Alpatsky, Nikita G. Platonov
2004, Journal of Geophysical Research (109)
Arctic multiyear sea ice concentration maps for January 1988-2001 were generated from SSM/I brightness temperatures (19H, 19V, and 37V) using modified multiple layer perceptron neural networks. Learning data for the neural networks were extracted from ice maps derived from Okean and ERS satellite imagery to capitalize on the stability of...
Lessons learned from the wildfires
Jon E. Keeley, C. J. Fotheringham
R.W. Halsey, editor(s)
2004, Book chapter, Fire, chaparral and survival in southern California.
No abstract available at this time...
A unified approach to analyzing nest success
T.L. Shaffer
2004, The Auk (121) 526-540
Logistic regression has become increasingly popular for modeling nest success in terms of nest-specific explanatory variables. However, logistic regression models for nest fate are inappropriate when applied to data from nests found at various ages, for the same reason that the apparent estimator of nest success is biased (i.e. older...
Plant communities
K. McEachern
2004, Book chapter, The natural resources of Point Loma
No abstract available....
Trapping and shooting light geese on migration and wintering areas
R. R. Cox Jr., C.D. Ankeny
M. A. Johnson, C.D. Ankeny, editor(s)
2004, Book chapter, Direct control and alternative harvest strategies for North American light geese: Report of the Direct Control and Alternative Harvest Measures Working Group. Arctic Goose Joint Venture Special Publication
Biotic and abiotic factors related to rainbow smelt recruitment in the Wisconsin waters of Lake Superior, 1978-1997
Michael H. Hoff
2004, Journal of Great Lakes Research (30) 414-422
Lake Superior rainbow smelt (Osmerus mordax) recruitment to 12-13 months of age in the Wisconsin waters of Lake Superior varied by a factor of 9.3 during 1978-1997. Management agencies have sought models that accurately predict recruitment, but no satisfactory models had previously been developed. In this study, modeling was conducted...
Trophic transfer efficiency of DDT to lake trout (Salvelinus namaycush) from their prey
C.P. Madenjian, D.V. O’Connor
2004, Bulletin of Environmental Contamination and Toxicology (72) 1219-1225
The objective of our study was to determine the efficiency with which lake trout retain DDT from their natural food. Our estimate of DDT assimilation efficiency would represent the most realistic estimate, to date, for use in risk assessment models....
Fire as an ecological process
N. G. Sugihara, J. W. van Wagtendonk, J. Fites-Kaufman
N. G. Sugihara, J. W. van Wagtendonk, J. Fites-Kaufman, K. E. Shaffer, A. E. Thode, editor(s)
2004, Book chapter, Fire in California ecosystems
This chapter investigates fire as a dynamic ecosystem process by first investigating fire in the context of general ecological theory, then discussing the concept of fire regimes, and finally by developing and applying a new framework for classifying fire regimes that better allows for the understanding of the patterns of...
Remote sensing of vegetation and land-cover change in Arctic Tundra Ecosystems
Douglas A. Stow, Allen Hope, David McGuire, David Verbyla, John A. Gamon, Fred Huemmrich, Stan Houston, Charles H. Racine, Matthew Sturm, Ken D. Tape, Larry D. Hinzman, Kenji Yoshikawa, Craig E. Tweedie, Brian Noyle, Cherie Silapaswan, David C. Douglas, Brad Griffith, Gensuo Jia, Howard E. Epstein, Donald A. Walker, Scott Daeschner, Aaron Petersen, Liming Zhou, Ranga B. Myneni
2004, Remote Sensing of Environment (89) 281-308
The objective of this paper is to review research conducted over the past decade on the application of multi-temporal remote sensing for monitoring changes of Arctic tundra lands. Emphasis is placed on results from the National Science Foundation Land–Air–Ice Interactions (LAII) program and on optical remote sensing techniques. Case...
Elements of a predictive model for determining beach closures on a real time basis: the case of 63rd Street Beach Chicago
Greg A. Olyphant, Richard L. Whitman
2004, Environmental Monitoring and Assessment (98) 175-190
Data on hydrometeorological conditions and E. coli concentration were simultaneously collected on 57 occasions during the summer of 2000 at 63rd Street Beach, Chicago, Illinois. The data were used to identify and calibrate a statistical regression model aimed at predicting when the bacterial concentration of the beach water was above...