Buscar
Mostrando ítems 31-39 de 39
Age-related prey selectivity and foraging efficiency in Olrog's Gulls Larus atlanticus feeding on crabs in their non-breeding grounds.
(Csiro Publishing, 2011-05)
Foraging ecology is an essential component of the life history of a species and a good understanding of foraging ecology is especially important for threatened species where prey populations may be adversely affected by ...
Distribución reproductiva y abundancia de gaviotas y gaviotines en el área natural protegida Bahía San Blas, Buenos AiresBreeding distribution and abundance of gulls and terns in the Bahía San Blas protected area, Buenos Aires
(Asociación Ornitológica del Plata, 2014-08)
El conocimiento sobre la distribución reproductiva y la abundancia de aves marinas es clave para su manejo y conservación. Se presenta información sobre la reproducción de gaviotas y gaviotines entre 2006-2013 en la Reserva ...
High trophic overlap within the seabird community of Argentinean Patagonia: a multiscale approach
(Wiley, 2004-06-26)
1. Food web interactions in animal communities can be investigated through the measurement of stable isotopes (e.g. δ15N, δ13C). We used this approach in a community of 14 species of seabirds breeding on the Argentinean ...
Seabird and marine-mammal attendance and by-catch in semi-industrial trawl fisheries in near-shore waters of northern Argentina
(Csiro Publishing, 2013-03)
Seabird and marine-mammal attendance and by-catch in mid-water and bottom otter semi-industrial coastal pair-trawl fisheries were assessed for the first time in northern Argentina. Observers were placed onboard trawlers ...
Fishing gear–related injuries and mortality of seabirds in coastal northern Argentina
(Pacific Seabird Group, 2021-10)
Worldwide, many seabirds are killed annually when they become entangled in gear used in coastal fisheries. This includes seabirds along the coast of Argentina, where recreational fishing occurs year-round and where little ...
Persistent organic pollutants in sediments, intertidal crabs, and the threatened Olrog's gull in a northern Patagonia salt marsh, Argentina
(Pergamon-Elsevier Science Ltd, 2018-11)
Persistent organic pollutants (POPs) are of great concern for the environment. In this study we (a) determine levels and distribution of OCPs, PCBs, and PBDEs in sediments and two crab species (Neohelice granulata and ...
Requerimientos, selección y partición de hábitat reproductivo en las gaviotas cocinera (Larus dominicanus) y de Olrog (L. atlanticus)
La distribución de una especie está condicionada en gran medida por sus limitaciones físicas, tanto morfológicas como fisiológicas. Dentro de estos límites, el hábitat utilizado por una especie dependerá de cómo éste es ...
Chlorpyrifos and persistent organic pollutants in feathers of the near threatened Olrog's Gull in southeastern Buenos Aires Province, Argentina
(Elsevier, 2020-10)
The use of bird feathers to assess environmental contamination has steadily increased in ecotoxicological monitoring programs over the past decade. The Olrog's Gull (Larus atlanticus) is a species endemic to the Atlantic ...
Sitios candidatos a AICA marinas: áreas costeras y pelágicas importantes para la conservación de las aves en el Mar Argentino
(Asociación Ornitológica del Plata, 2018)
El Mar Argentino es una de las áreas oceánicas más productivas del hemisferio sur, un ecosistema particularmente diverso, rico en endemismos y con gran biomasa de algunas especies que alimentan a predadores tope. El litoral ...