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Título: | Multi-scale habitat preference analyses for Azorean blue whales |
Autor: | González-García, Laura; Pierce, Graham J. CSIC ORCID; Autret, Emmanuelle; Torres-Palenzuela, Jesús M. | Fecha de publicación: | 2018 | Editor: | Public Library of Science | Citación: | PLoS ONE 13(9): e0201786 (2018) | Resumen: | Blue whales are sighted every year around the Azores islands, which apparently provide an important seasonal foraging area. In this paper we aim to characterize habitat preferences and analyze the temporal distribution of blue whales around São Miguel Island. To do so, we applied Generalized Additive Models to an opportunistic cetacean occurrence dataset and remotely sensed environmental data on bathymetry, sea surface temperature, chlorophyll concentration and altimetry. We provide a brief description of the oceanography of the area, emphasizing its high spatio-temporal variability. In order to capture this dynamism, we used environmental data with two different spatial resolutions (low and high) and three different temporal resolutions (daily, weekly and monthly), thus accounting for both long-term oceanographic events such as the spring bloom, and shorter-term features such as eddies or fronts. Our results show that blue whales have a well-defined ecological niche around the Azores. They usually cross the archipelago from March to June and habitat suitability is highest in dynamic areas (with high Eddy Kinetic Energy) characterized by convergence or aggregation zones where productivity is enhanced. Multi-scale studies are useful to understand the ecological niche and habitat requirements of highly mobile species that can easily react to short-term changes in the environment | Descripción: | 25 pages, 13 figures, 2 tables.-- This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited | Versión del editor: | https://doi.org/10.1371/journal.pone.0201786 | URI: | http://hdl.handle.net/10261/171031 | DOI: | 10.1371/journal.pone.0201786 | E-ISSN: | 1932-6203 |
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Multiscale_habitat_2018.pdf | 9,89 MB | Adobe PDF | Visualizar/Abrir |
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