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Microclimate of tree cavities during winter nights ? implications for roost site selection in birds

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F07%3A00004958" target="_blank" >RIV/61989592:15310/07:00004958 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Microclimate of tree cavities during winter nights ? implications for roost site selection in birds

  • Original language description

    We examined the relationships between cavity temperature, ambient temperature outside the cavity and structural characteristics of 70 cavities measured for 1 night to determine if cavity roosting birds may potentially select warmer tree cavities for wintertime roosting. The mean temperature increment of the cavity (=cavity-ambient temperature) varied from -2.4 to 4.9 degrees C and increased with higher day-to-night fluctuations in the ambient temperature, smaller cavity entrance and better health statusof the cavity tree. Cavities in healthy trees were warmer than those in dead trees, but this difference disappeared with rising mean ambient temperatures. This interaction between the effects of tree health status and mean ambient temperature, as well as the effect of day-to-night fluctuations in the ambient temperature, were supported by the analysis of repeated measurements of temperature taken on 12 consecutive nights in five cavities. The variability in cavity microclimates makes th

  • Czech name

    Mikroklima stromových dutin během zimních nocí ? význam pro výběr ptačích nocovišť

  • Czech description

    Studovali jsme vztah mezi noční teplotou v dutině, vnější teplotou a strukturními charakteristikami dutiny. Teplotní rozdíl mezi dutinou a okolím se zvyšoval s větší denní fluktuací vnější teploty, se zmenšujícím se otvorem do dutiny a s lepším zdravotním stavem stromu. Dutiny ve zdravých stromech byly relativně teplejší než dutiny v suchých nebo nemocných stromech, ale tento rosdíl se snižoval s rostoucí vnější teplotou. Pozorovaná variabilita dokladá, že výběr teplejších dutin je možný a že vlastnostidutiny mohou být vodítkem pro nocující ptáky.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    EG - Zoology

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    International Journal of Biometeorology

  • ISSN

    0020-7128

  • e-ISSN

  • Volume of the periodical

    51

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    7

  • Pages from-to

    287-293

  • UT code for WoS article

  • EID of the result in the Scopus database