2007
Effect of habitat on Blackcap, Sylvia atricapilla nest predation in the absence of corvid predators
BALÁŽ, Michal; Karel WEIDINGER; Ľudovít KOCIAN a Danka NÉMETHOVÁZákladní údaje
Originální název
Effect of habitat on Blackcap, Sylvia atricapilla nest predation in the absence of corvid predators
Název česky
Effect of habitat on Blackcap, Sylvia atricapilla nest predation in the absence of corvid predators
Autoři
BALÁŽ, Michal; Karel WEIDINGER; Ľudovít KOCIAN a Danka NÉMETHOVÁ ORCID
Vydání
Folia Zoologica, Brno, Czech Republic, Institute of Vertebrate Biology, Academy, 2007, 0139-7893
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 0.376
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/07:00022430
Organizační jednotka
Přírodovědecká fakulta
UT WoS
Klíčová slova anglicky
nest success; nest concealment; agricultural landscape; SW Slovakia
Příznaky
Recenzováno
Změněno: 3. 3. 2010 16:05, RNDr. Danka Haruštiaková, Ph.D.
V originále
Variation in nest survival rates is often ascribed to differences in predator communities. Because corvids are the dominant nest predators in many landscapes with fragmented woodland, their absence may have effect on both the overall nest success and its relationship to habitat features. Nest success of Sylvia atricapilla was examined in two habitats in agricultural landscape of SW Slovakia, where corvids were rare/absent. The daily nest survival rate (126 nests) was 0.977 (95% CI: 0.966 ... 0.984) and 0.966 (0.948 ... 0.977) for the egg and nestling stage, respectively, yielding a nest success of 0.52 (0.37 ... 0.64) over a 24day period. These values are higher than in comparable studies from central Europe, although predation was still the leading cause of nesting failure (more or equal to 71% of 48 failed nests). Correlational evidence suggests link between local absence of corvids and the relatively high nest survival, which was only weakly affected by nest site and habitat characteristics. Nest survival was not detectably higher in forest fragment than in windbreaks and did not increase with distance from forest field edge or with vegetation concealment. We conclude that both the habitat features and composition of local predator community should be considered when explaining patterns in nest survival rate.
Česky
Variation in nest survival rates is often ascribed to differences in predator communities. Because corvids are the dominant nest predators in many landscapes with fragmented woodland, their absence may have effect on both the overall nest success and its relationship to habitat features. Nest success of Sylvia atricapilla was examined in two habitats in agricultural landscape of SW Slovakia, where corvids were rare/absent. The daily nest survival rate (126 nests) was 0.977 (95% CI: 0.966 ... 0.984) and 0.966 (0.948 ... 0.977) for the egg and nestling stage, respectively, yielding a nest success of 0.52 (0.37 ... 0.64) over a 24day period. These values are higher than in comparable studies from central Europe, although predation was still the leading cause of nesting failure (more or equal to 71% of 48 failed nests). Correlational evidence suggests link between local absence of corvids and the relatively high nest survival, which was only weakly affected by nest site and habitat characteristics. Nest survival was not detectably higher in forest fragment than in windbreaks and did not increase with distance from forest field edge or with vegetation concealment. We conclude that both the habitat features and composition of local predator community should be considered when explaining patterns in nest survival rate.
Návaznosti
| MSM0021622412, záměr |
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