INVESTIGADORES
CASAUX Ricardo Jorge
congresos y reuniones científicas
Título:
The use of Antarctic shags to monitor coastal fish populations: evaluation and proposals after 5 years of test of a standard method
Autor/es:
CASAUX R,; BARRERA-ORO E.
Reunión:
Workshop; The CCAMLR Ecosystem Monitoring and Management Working Group; 2003
Resumen:
Abstract
This overview reflects the main
points of the feasibility of using the Antarctic Shag as a monitor of inshore
demersal fish populations, including species of commercial importance.
Likewise, the history of the development of this theme in relation to the EMM
and FSA Working Groups of CCAMLR since the onset of the 1990s until the recent
five year testing period of the Standard Method, is described. Among other
conclusions, the analysis of pellets is an adequate method to estimate
qualitatively and quantitatively the diet of shags and can reflect differences
in fish availability between seasons and areas. Considering the similarities in
foraging strategies and reproductive behaviour between Antarctic and
sub-Antarctic shags, the methodology proposed could readily be used with other
shag species in Antarctica.