A review of methods used to analyse albatross diets - Assessing priorities across their range
© 2016 International Council for the Exploration of the Sea 2016. All rights reserved. Many seabird populations are threatened by interactions with commercial fisheries, and climate change. Understanding their prey requirements and dietary flexibility in this context is important for effective conse...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Oxford University Press 2009
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/71393 |
| _version_ | 1848762468332994560 |
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| author | McInnes, J. Raymond, B. Phillips, R. Jarman, Simon Lea, M. Alderman, R. |
| author_facet | McInnes, J. Raymond, B. Phillips, R. Jarman, Simon Lea, M. Alderman, R. |
| author_sort | McInnes, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2016 International Council for the Exploration of the Sea 2016. All rights reserved. Many seabird populations are threatened by interactions with commercial fisheries, and climate change. Understanding their prey requirements and dietary flexibility in this context is important for effective conservation and management. However, changes in the methods used to assess diet, as well as the spatial and temporal coverage of monitoring schemes, may reduce our ability to detect and monitor these marine threats. To help assess conservation priorities linked to diet, we performed a systematic review of 109 albatross diet papers published between 1950 and 2016, which corresponded to 296 studies when stratified by sampling year, breeding site, and breeding species. We assessed the methods used, changes over time, and spatial and temporal sampling coverage by species and island group. Most albatross studies have focused on chick-rearing, and diet during other breeding phases is comparatively poorly known. Furthermore, chicks are more commonly sampled than adults and very rarely immature birds, all of which may differ in diet composition. There was a pronounced shift over time in the preferred method of characterising diet, from the morphological examination of prey remains to stable isotope analysis of tissue. This shift has reduced the volume of detailed taxonomic information available from morphological studies. This difference in resolution hinders the ability to detect changes in prey species, with implications for management of threatened albatrosses and for monitoring broader changes in marine ecosystems. In a knowledge gap analysis for important breeding colonies (with >5% of global population), we identified key sites where existing monitoring has provided a foundation for robust longitudinal diet studies. Maintaining and augmenting these long-term research programmes will enable analyses of the impacts of changing climate and fishing practices on seabird populations and facilitate the timely identification and implementation of management options. |
| first_indexed | 2025-11-14T10:48:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-71393 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:48:03Z |
| publishDate | 2016 |
| publisher | Oxford University Press 2009 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-713932018-12-13T09:32:38Z A review of methods used to analyse albatross diets - Assessing priorities across their range McInnes, J. Raymond, B. Phillips, R. Jarman, Simon Lea, M. Alderman, R. © 2016 International Council for the Exploration of the Sea 2016. All rights reserved. Many seabird populations are threatened by interactions with commercial fisheries, and climate change. Understanding their prey requirements and dietary flexibility in this context is important for effective conservation and management. However, changes in the methods used to assess diet, as well as the spatial and temporal coverage of monitoring schemes, may reduce our ability to detect and monitor these marine threats. To help assess conservation priorities linked to diet, we performed a systematic review of 109 albatross diet papers published between 1950 and 2016, which corresponded to 296 studies when stratified by sampling year, breeding site, and breeding species. We assessed the methods used, changes over time, and spatial and temporal sampling coverage by species and island group. Most albatross studies have focused on chick-rearing, and diet during other breeding phases is comparatively poorly known. Furthermore, chicks are more commonly sampled than adults and very rarely immature birds, all of which may differ in diet composition. There was a pronounced shift over time in the preferred method of characterising diet, from the morphological examination of prey remains to stable isotope analysis of tissue. This shift has reduced the volume of detailed taxonomic information available from morphological studies. This difference in resolution hinders the ability to detect changes in prey species, with implications for management of threatened albatrosses and for monitoring broader changes in marine ecosystems. In a knowledge gap analysis for important breeding colonies (with >5% of global population), we identified key sites where existing monitoring has provided a foundation for robust longitudinal diet studies. Maintaining and augmenting these long-term research programmes will enable analyses of the impacts of changing climate and fishing practices on seabird populations and facilitate the timely identification and implementation of management options. 2016 Journal Article http://hdl.handle.net/20.500.11937/71393 10.1093/icesjms/fsw105 Oxford University Press 2009 restricted |
| spellingShingle | McInnes, J. Raymond, B. Phillips, R. Jarman, Simon Lea, M. Alderman, R. A review of methods used to analyse albatross diets - Assessing priorities across their range |
| title | A review of methods used to analyse albatross diets - Assessing priorities across their range |
| title_full | A review of methods used to analyse albatross diets - Assessing priorities across their range |
| title_fullStr | A review of methods used to analyse albatross diets - Assessing priorities across their range |
| title_full_unstemmed | A review of methods used to analyse albatross diets - Assessing priorities across their range |
| title_short | A review of methods used to analyse albatross diets - Assessing priorities across their range |
| title_sort | review of methods used to analyse albatross diets - assessing priorities across their range |
| url | http://hdl.handle.net/20.500.11937/71393 |