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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology
Result continuities
Project
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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