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Suazo C.G.,Justus Liebig University | Schlatter R.P.,Austral University of Chile | Arriagada A.M.,University of Concepción | Cabezas L.A.,Albatross Task Force | Ojeda J.,University of Magallanes
ORYX | Year: 2013

Interactions between seabirds and commercial fishing activities have been well documented but little information is available regarding the impacts of more traditional fishing practices on seabird populations. We interviewed fishermen, administered questionnaires, and made field-based observations to determine the extent to which artisanal fisheries interact with and affect seabirds in the fjords and channels of the Chonos archipelago in southern Chile. Our surveys indicated a positive perception of seabirds as useful indicators of marine productivity and in their role scavenging fish waste and discards associated with fishing operations. However, the surveys also revealed that fishermen routinely establish seasonal camps for collecting seabird eggs and adults for food or bait and introduce feral predators to seabird breeding colonies on islands. Understanding the traditional practices of fishermen is critical for the future of community-based conservation of the region's marine resources and biodiversity. Copyright © Fauna & Flora International 2013.

Cabezas L.A.,Albatross Task Force | Ruiz J.,Austral University of Chile | Yates O.,Albatross Task Force Global Seabird Programme BirdLife International | Bernal M.,University of Valparaíso
New Zealand Journal of Marine and Freshwater Research | Year: 2012

During seabird censuses performed as part of scientific research looking into seabird bycatch onboard industrial pelagic longline vessels targeting swordfish (Xiphias gladius) we made the first documented records of black petrel (Procellaria parkinsoni) in the pelagic waters of northern Chile, considerably extending the species' range southward. These observations were made during hauling operations in the austral winters of 2008, 2009 and 2010 between 23°00'S and 32°49'S. Black petrels were observed in 9.6% of censuses and a total of 10 birds were recorded. Despite the fact that this species fed upon discards and wastes generated during fishing, no incidental mortality was observed. Our results are relevant to the conservation of the black petrel in the south-eastern Pacific marine ecosystem, as they provide new information on species range and interactions with pelagic fisheries. © 2012 The Royal Society of New Zealand.

Cursach J.A.,University of Los Lagos | Suazo C.G.,Albatross Task Force | Rau J.R.,University of Los Lagos | Niklitschek E.,University of Los Lagos | Vilugron J.,University of Los Lagos
Revista de Biologia Marina y Oceanografia | Year: 2014

The globally population decline of Southern Rockhopper penguins does considered this species as vulnerable. However, in the Diego Ramírez archipelago (southern Chile) during the recent years the breeding population has been increased. We describe the nesting of Southern Rockhopper penguins in two sub-colonies of recent conformation in Gonzalo Island, Diego Ramírez. Variables such as sub-colony size and location of the nest within this not explain the hatching success of eggs and survival of chicks. The nesting population of Southern Rockhopper penguin in Gonzalo Island has a pattern of expansion in its colony, explained by a local increase in population abundance and protection generated by the vegetation coverage as tussock for their nests, which acting as an forming expansive colonial frontier.

During january 2011 we recorded morphometric and behavioral data of Cinclodes antarcticus in Gonzalo island, Diego Ramirez, southern Chile. The bill length was signifi cantly higher in males compared to females. C. antarcticus is a commensal bird of seabird and marine mammal colonies of the Patagonia.

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