TITLE

Seasonal survival of young and adult black grouse females in boreal forests

AUTHOR(S)
Pekkola, Miina; Alatalo, Rauno; Pöysä, Hannu; Siitari, Heli
PUB. DATE
June 2014
SOURCE
European Journal of Wildlife Research;Jun2014, Vol. 60 Issue 3, p477
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Direct demographical information from different populations of species in concern may reveal processes to target by management. We estimated seasonal survival rates using data from 253 individual females in a continuous population of black grouse Tetrao tetrix in Central Finland in 2005-2007. The information theoretic model selection included the effects of age class, ecological season, year, and their relevant interactions. We showed a clear difference in the survival of young and older females during late winter, a decrease in female survival during spring, and variation between the study years. The most frequent proximate mortality cause was avian predation, and the avian predation rate was highest in spring.
ACCESSION #
95993151

 

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