Foraging closer to the colony leads to faster growth in little auks
PBN-AR
Instytucja
Instytut Oceanologii Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
MARINE ECOLOGY-PROGRESS SERIES
ISSN
0171-8630
EISSN
1616-1599
Wydawca
INTER-RESEARCH
DOI
URL
Rok publikacji
2013
Numer zeszytu
Strony od-do
263-278
Numer tomu
489
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
Autorzy
Pozostali autorzy
+ 5
Słowa kluczowe
angielski
Zooplanktivorous alcid;
Foraging range;
Zooplankton;
Calanus glacialis;
Parental efforts;
Breeding success;
Chick growth;
Spitsbergen
Streszczenia
Język
en
Treść
Knowledge of foraging behaviour is essential to understand both the ecological roles of seabirds and the constraints acting upon them in marine ecosystems. Here, we investigated foraging trips of a small planktivorous alcid, the little auk Alle alle, using miniature GPS loggers. We performed the study in 2 large breeding colonies in west Spitsbergen (Hornsund and Magdalenefjorden) with contrasting oceanographic conditions (Arctic and Atlantic environments, respectively). Generally, in both locations little auks foraged in areas with low sea surface temperature (Arctic-type water, marginal ice zone, and frontal zones) where preferred zooplankton are commonly abundant. In the Arctic environment (Hornsund), birds foraged significantly closer to the colony (up to 60 km) compared to up to 150 km in the Atlantic environment (Magdalenefjorden). Hatching and breeding success and chick survival up to 20 d as well as chick body mass parameters were similar in both studied colonies. However, chicks in the Arctic environment (Hornsund) achieved both peak body mass and fledging age earlier, suggesting faster chick growth than in the Atlantic environment (Magdalenefjorden). The importance for breeding little auks of nearby cold water foraging grounds may make them sensitive to predicted climate change with serious negative consequences for body condition, future survival and breeding success.
Cechy publikacji
oryginalny artykuł naukowy
publikacja recenzowana
Inne
System-identifier
574800
CrossrefMetadata from Crossref logo
Cytowania
Liczba prac cytujących tę pracę
Brak danych
Referencje
Liczba prac cytowanych przez tę pracę
Brak danych