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Post-fledging survival of Tengmalm's owl offspring in boreal forests: Interactive effects of varying dynamics of main prey and habitat composition

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985904%3A_____%2F23%3A00571787" target="_blank" >RIV/67985904:_____/23:00571787 - isvavai.cz</a>

  • Alternative codes found

    RIV/60460709:41210/23:94987 RIV/60460709:41320/23:97058 RIV/00027014:_____/23:10005680

  • Result on the web

    <a href="https://www.frontiersin.org/articles/10.3389/fevo.2023.1151622/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fevo.2023.1151622/full</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3389/fevo.2023.1151622" target="_blank" >10.3389/fevo.2023.1151622</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Post-fledging survival of Tengmalm's owl offspring in boreal forests: Interactive effects of varying dynamics of main prey and habitat composition

  • Original language description

    The knowledge about the mortality rate of offspring is crucial for estimating bird population dynamics and conserving species with declining populations. Parents of predatory birds provide food for their offspring during the post-fledging dependency period, which is frequently described as essential due to inexpert flying skills. Using radio telemetry, we studied fledglings' probability of dying by starvation and predation in Tengmalms' owls (Aegolius funereus). Nestlings (21 and 39) from 10 and 14 broods in 2019 and 2021, respectively, were equipped with leg-mounted tags and monitored throughout the post-fledging dependency period in west-central Finland. In total, 28 out of 60 fledglings did not survive the post-fledging dependency period (12 died due to starvation, and 16 were predated). The fledglings' probability of dying by starvation and predation was 3.7 and 2.4 times higher, respectively, in the decreasing (2019) than during the increasing (2021) abundance of main foods (voles), showing that prey availability is essential for survival during the post-fledging dependency period. The probability of starvation increased with augmenting agricultural lands in the home range and increasing precipitation after fledging, which indicated that parent owls avoided hunting in open areas and during rainy nights. The predation rate during the post-fledging dependency period increased with augmenting cover of old-growth forests in the home range. This result suggested that coverage of old-growth forests is nowadays so small in the study area that they act as ecological traps for newly-fledged owlets. The reason is that the main avian enemies of Tengmalm's owls' (goshawks and Ural owls) also prefer old-growth forests for breeding and hunting.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10606 - Microbiology

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2023

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Frontiers in Ecology and Evolution

  • ISSN

    2296-701X

  • e-ISSN

    2296-701X

  • Volume of the periodical

    11

  • Issue of the periodical within the volume

    Mar 23

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    13

  • Pages from-to

    1151622

  • UT code for WoS article

    000963124100001

  • EID of the result in the Scopus database

    2-s2.0-85152066471