Spatial distribution and ecological niches of non-breeding planktivorous petrels
Navarro, Joan; Cardador, Laura; Brown, Ruth; Phillips, Richard A.. 2015 Spatial distribution and ecological niches of non-breeding planktivorous petrels. Scientific Reports, 5, 12164. https://doi.org/10.1038/srep12164
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Abstract/Summary
According to niche theory, mechanisms exist that allow co-existence of organisms that would otherwise compete for the same prey and other resources. How seabirds cope with potential competition during the non-breeding period is poorly documented, particularly for small species. Here we investigate for the first time the potential role of spatial, environmental (habitat) and trophic (isotopic) segregation as niche-partitioning mechanisms during the non-breeding season for four species of highly abundant, zooplanktivorous seabird that breed sympatrically in the Southern Ocean. Spatial segregation was found to be the main partitioning mechanism; even for the two sibling species of diving petrel, which spent the non-breeding period in overlapping areas, there was evidence from distribution and stable isotope ratios for differences in habitat use and diving depth.
Item Type: | Publication - Article |
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Digital Object Identifier (DOI): | https://doi.org/10.1038/srep12164 |
Programmes: | BAS Programmes > BAS Programmes 2015 > Ecosystems |
ISSN: | 2045-2322 |
Date made live: | 12 Aug 2015 10:58 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/511523 |
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