Podrobnosti záznamu

Název
    The influence of climate and population size on the distribution of breeding dates in the red-backed shrike (Lanius collurio)
Autor
    Adamík, Peter
    Cepák, Jaroslav
    Hušek, Jan
    Tryjanowski, Piotr
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Annales Zoologici Fennici
Svazek/č.
    Roč. 46, č. 6
Strany
    12
Rok
    2009
Výraz tezauru
    CLUTCH SIZE
    ECOLOGICAL CONDITIONS
    MIGRATORY BIRD
    REPRODUCTIVE SUCCESS
    SEXUAL SELECTION
    SPRING ARRIVA
    WINTER HABITAT
Klíčové slovo
    Breeding
    Climate
    Collurio
    Dates
    Distribution
    Influence
    Lanius
    Population
    Red-backed
    Shrike
    Size
Abstrakt (anglicky)
   There are now a growing number of studies linking environmental conditions operating at different life stages of birds to their arrival on breeding grounds. Here we focus on one of the major fitness determinants; timing of breeding. We examined the influence of climate relevant to different parts of the birds' annual life cycle, and the impact of population size on distribution traits in a central European population of the red-backed shrike Lanius collurio. Timing of breeding was affected by breeding ground climate as well as by population size. In years with higher population densities shrikes started to breed earlier. In contrast to previous studies we did not find that our climatic variables adequately explained the variability of timing of breeding. We argue that density-dependent processes are also important for the reproduction of shrikes and that in phenological studies; attention should also be paid to other factors operating at breeding grounds.
Přispěvatel
    Národní muzeum Praha
Kód přispěvatele
    NM
Zdrojový formát
    R
Datum importu
    8. 8. 2012