Effects of logging on capercaillie (Tetrao urogallus) leks
作者:
Jørund Rolstad,
Per Wegge,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1989)
卷期:
Volume 4,
issue 1-4
页码: 129-135
ISSN:0282-7581
年代: 1989
DOI:10.1080/02827588909382552
出版商: Taylor & Francis Group
关键词: Tetrao urogallus;lek;demography;extinction;recolonization;logging;habitat fragmentation
数据来源: Taylor
摘要:
In a 136 km2coniferous area in southeastern Norway, 13 of 24 past leks, known from the 1930–40s, went extinct and 5 new leks were established, by 1985. There was no difference in extinction rate between clearfelled (7 of 13) and untreated (6 of 11) leks. Number of leks, number of cocks per lek, and total number of cocks were reduced by 33, 53, and 69%, respectively, compared with a 69% reduction in suitable habitat (forest. older than 70 years). We argue that the overall population decline merely was due to a general fragmentation of suitable habitats, rather than direct clearfelling of lek areas.
点击下载:
PDF (463KB)
返 回