Long-Term Ecology Studies in Patagonian Seabirds: A Review with the Imperial Cormorant as a Case Study

Quintana, Flavio; Wilson, Rory P.; Prandoni, Nicolás; Svagelj, Walter S.; Gómez‐Laich, Agustina

doi:10.1007/978-3-030-86676-1_10

Cited by 2 publications

(1 citation statement)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the present study, the degree of sexual segregation varied between years. Similar inter-annual variation in foraging distribution has been observed in Imperial cormorants ( Leucocarbo atriceps ), likely due to environmentally mediated fluctuations in prey availability or distribution ( Quillfeldt et al, 2011 ; Quintana et al, 2022 ).…”

Section: Discussionmentioning

confidence: 56%

Foraging behaviour and habitat use during chick-rearing in the Australian endemic black-faced cormorant (Phalacrocorax fuscescens)

Cansse,

Lens,

Sutton

et al. 2024

Biology Open

View full text Add to dashboard Cite

Despite its wide distribution, relatively little is known of the foraging ecology and habitat use of the black-faced cormorant (Phalacrocorax fuscescens), an Australian endemic seabird. Such information is urgently required in view of the rapid oceanic warming of south-eastern Australia, the stronghold of the species. The present study used a combination of opportunistically collected regurgitates and GPS/dive behaviour data loggers to investigate diet, foraging behaviour and habitat-use of black-faced cormorants during four chick-rearing periods (2020-2023) on Notch Island, northern Bass Strait. Observed prey species were almost exclusively benthic (95%), which is consistent with the predominantly benthic diving behaviour recorded. Males foraged at deeper depths than females (median depth males: 18 m; median depth females: 8 m), presumably due to a greater physiological diving capacity derived from their larger body size. This difference in dive depths was associated with sexual segregation of foraging locations, with females predominantly frequenting shallower areas closer to the coastline. These findings have strong implications for the management of the species, as impacts of environmental change may disproportionally affect the foraging range of one sex and, thereby, reproductive success.

show abstract

Section: Discussionmentioning

confidence: 56%