Zobrazeno 1 - 10
of 16
pro vyhledávání: '"John G. Sidle"'
Autor:
Douglas H. Johnson, Richard P. Reading, David J. Augustine, Jack F. Cully, John G. Sidle, Sterling D. Miller
Publikováno v:
Wildlife Society Bulletin. 36:248-256
Aerial surveys using line-intercept methods are one approach to estimate the extent of prairie dog colonies in a large geographic area. Although black-tailed prairie dogs (Cynomys ludovicianus) construct conspicuous mounds at burrow openings, aerial
Autor:
Marc R. Matchett, Theodore P. Toombs, Tammi L. Johnson, John G. Sidle, Jack F. Cully, David J. Augustine
Publikováno v:
Landscape Ecology. 23:255-267
Black-tailed prairie dogs (Cynomys ludovicianus) are a key component of the disturbance regime in semi-arid grasslands of central North America. Many studies have compared community and ecosystem characteristics on prairie dog colonies to grasslands
Autor:
John G. Sidle
Publikováno v:
Wildlife Society Bulletin. 33:1139-1144
You might think this is going to be another antigrazing epistle and you have seen enough of them. But it's not. It's about the ponderous trials and tribulations of making even modest livestock adjustments for wildlife habitat management on federal la
Publikováno v:
Journal of Mammalogy. 82:928-936
During 1997-1998, we undertook an aerial survey, with an aerial line-intercept technique, to estimate the extent of colonies of black-tailed prairie dogs (Cynomys ludovicianus) in the northern Great Plains states of Nebraska, North Dakota, South Dako
Publikováno v:
Conservation Biology. 11:580-586
Publikováno v:
Wetlands. 16:245-250
We describe a relatively inexpensive and easy-to-use hardware/software system for use in acrial videography of wetlands and other habitats. Advantages of the camcorder we used over older models include its use of three charge-coupled device sensors.
Autor:
Richard Clark, Mark Orr, Kent Willburn, Cinde Gilbert, John G. Sidle, Donna Stuart, Harold G. Nagel
Publikováno v:
Remote Sensing of Environment. 43:333-341
We counted sandhill cranes on thermal infrared images recorded by the Nebraska Air National Guard's AN/ADD-5 infrared reconnaissance system above the Platte River, Nebraska, in March and April 1989. Individual cranes roosting in the river at night we
Publikováno v:
Conservation Biology. 6:570-580
Financing for logging of tropical moist forests in the Republic of Congo is commonly sought in the form of loans from multilateral development banks. Pressure from nongovernmental conservation organizations and from within the banks themselves has re
Publikováno v:
Environmental Management. 15:349-356
Section 7(a)(2) of the Endangered Species Act directs federal agencies to ensure that their actions do not jeopardize the continued existence of endangered and threatened species. The US Fish and Wildlife Service (USFWS) issues jeopardy or nonjeopard