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Author : Richard L. Everett
Publisher : Unknown
Page : 876 pages
File Size : 54,7 Mb
Release : 1985
Category : Electronic
ISBN : STANFORD:36105011654154
Author : Anonim
Publisher : Unknown
Page : 122 pages
File Size : 45,5 Mb
Release : 1982
Category : Aspen
ISBN : UOM:39015050421224
Author : Roy O. Harniss
Publisher : Unknown
Page : 8 pages
File Size : 47,6 Mb
Release : 1985
Category : Aspen
ISBN : MINN:31951D02965915A
Author : Anonim
Publisher : Unknown
Page : 426 pages
File Size : 48,6 Mb
Release : 1982
Category : Forests and forestry
ISBN : UOM:39015005843431
Author : Anonim
Publisher : Unknown
Page : 502 pages
File Size : 46,5 Mb
Release : 1984
Category : Electronic
ISBN : NWU:35556030812705
Author : James Kerr Brown
Publisher : Unknown
Page : 20 pages
File Size : 55,9 Mb
Release : 1989
Category : Aspen
ISBN : MINN:31951D029882193
Author : Anonim
Publisher : Unknown
Page : 510 pages
File Size : 47,9 Mb
Release : 1984
Category : Forest management
ISBN : UOM:39015025005391
Author : Anonim
Publisher : Unknown
Page : 102 pages
File Size : 44,5 Mb
Release : 1985
Category : Fire ecology
ISBN : MINN:31951D03001344U
A compilation of 11 papers in which authorities discuss the impacts of fire on wildlife habitat and wildlife populations. Presentations cover bobwhite quail, nongame birds, white-tailed deer, bighorn and Stone's sheep; and the response to burning of curlleaf cercocarpus, aspen, evergreen ceanothus, and antelope bitterbrush.
Author : Ervin G. Schuster
Publisher : Unknown
Page : 814 pages
File Size : 43,5 Mb
Release : 1985
Category : Timber
ISBN : STANFORD:36105009851192
Author : Anonim
Publisher : Unknown
Page : 110 pages
File Size : 51,6 Mb
Release : 1985
Category : Forests and forestry
ISBN : CHI:25682393
Author : Anonim
Publisher : Unknown
Page : 174 pages
File Size : 42,6 Mb
Release : 1983
Category : Forest management
ISBN : MINN:31951D02965984R
Author : Clinton E. Carlson,Dale L. Bartos,David H. Jackson,Dean E. Medin,Dennis M. Cole,Don J. Latham,Ervin G. Schuster,James Kerr Brown,Jeanne C. Chambers,John G. King,Kathleen Geier-Hayes,Michael J. Niccolucci,Norbert V. DeByle,Raymond J. Hoff,Renee O'Brien,Warren P. Clary
Publisher : Unknown
Page : 400 pages
File Size : 44,8 Mb
Release : 1989
Category : Aspen
ISBN : OSU:32435067327932
Author : Walter F. Mueggler
Publisher : Unknown
Page : 144 pages
File Size : 46,9 Mb
Release : 1988
Category : Aspen
ISBN : UIUC:30112104113342
Author : Anonim
Publisher : Unknown
Page : 56 pages
File Size : 52,5 Mb
Release : 2001
Category : Aspen
ISBN : MINN:31951D03001932D
Author : Todd R. Mills
Publisher : Unknown
Page : 394 pages
File Size : 44,5 Mb
Release : 2000
Category : Birdsongs
ISBN : STANFORD:36105113733872
Birds are indicators of vegetation structure and ecological conditions. The singing activity of birds declines during late-morning periods, which can affect estimates of abundance and conclusions regarding vegetative conditions indexed by birds. Therefore, it is important to quantify periods of bird activity so biologists can plan studies. We determined hourly detections from singing males of 22 nongame bird species in ponderosa pine, quaking aspen, and grassland vegetation types in the Black Hills of South Dakota. Detections of 12 of 22 species differed among 1-hr intervals after sunrise. Detections of yellowrumped warblers, Townsend's solitaires, red-breasted nuthatches, western tanagers, and American robins decreased on count-episodes more than 4 hrs after sunrise. Detections of dusky flycatchers declined on count-episodes more than 3 hrs after sunrise and detections of black-capped chickadees were greatest during the first hour after sunrise and declined afterward. Detections of many other species from songs or calls decreased on count-episodes more than 5 hrs after sunrise. We recommend that bird counts in the Black Hills be completed within 4 hrs after sunrise so estimates of bird abundance are not affected by reduced singing among males.