Discovery of new colonies by Sentinel2 reveals good and bad news for emperor
The distribution of emperor penguins is circumpolar, with 54 colony locations currently reported of which 50 are currently extant as of 2019. Here we report on eight newly discovered colonies and confirm the rediscovery of three breeding sites, only previously reported in the era before Very High Re...
Published in: | Remote Sensing in Ecology and Conservation |
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ftnerc:oai:nora.nerc.ac.uk:526583 2024-02-11T10:03:32+01:00 Discovery of new colonies by Sentinel2 reveals good and bad news for emperor Fretwell, Peter Trathan, Phil 2021-06 text http://nora.nerc.ac.uk/id/eprint/526583/ https://nora.nerc.ac.uk/id/eprint/526583/1/rse2.176.pdf https://zslpublications.onlinelibrary.wiley.com/doi/full/10.1002/rse2.176 en eng Wiley https://nora.nerc.ac.uk/id/eprint/526583/1/rse2.176.pdf Fretwell, Peter orcid:0000-0002-1988-5844 Trathan, Phil orcid:0000-0001-6673-9930 . 2021 Discovery of new colonies by Sentinel2 reveals good and bad news for emperor. Remote Sensing in Ecology and Conservation, 7 (7). 139-153. https://doi.org/10.1002/rse2.176 <https://doi.org/10.1002/rse2.176> cc_by_nc_4 Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1002/rse2.176 2024-01-19T00:03:13Z The distribution of emperor penguins is circumpolar, with 54 colony locations currently reported of which 50 are currently extant as of 2019. Here we report on eight newly discovered colonies and confirm the rediscovery of three breeding sites, only previously reported in the era before Very High Resolution satellite imagery was available, making a total of 61 breeding locations. This represents an increase of ~20% in the number of breeding sites, but, as most of the colonies appear to be small, they may only increase the total population by around 5–10%. The discoveries have been facilitated by the use of Sentinel2 satellite imagery, which has a higher resolution and more efficient search mechanism than the Landsat data previously used to search for colonies. The small size of these new colonies indicates that considerations of reproductive output in relation to metabolic rate during huddling is likely to be of interest. Some of the colonies exist in offshore habitats, something not previously reported for emperor penguins. Comparison with recent modelling results show that the geographic locations of all the newly found colonies are in areas likely to be highly vulnerable under business‐as‐usual greenhouse gas emissions scenarios, suggesting that population decreases for the species will be greater than previously thought. Article in Journal/Newspaper Emperor penguins Natural Environment Research Council: NERC Open Research Archive Remote Sensing in Ecology and Conservation 7 2 139 153 |
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Natural Environment Research Council: NERC Open Research Archive |
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language |
English |
description |
The distribution of emperor penguins is circumpolar, with 54 colony locations currently reported of which 50 are currently extant as of 2019. Here we report on eight newly discovered colonies and confirm the rediscovery of three breeding sites, only previously reported in the era before Very High Resolution satellite imagery was available, making a total of 61 breeding locations. This represents an increase of ~20% in the number of breeding sites, but, as most of the colonies appear to be small, they may only increase the total population by around 5–10%. The discoveries have been facilitated by the use of Sentinel2 satellite imagery, which has a higher resolution and more efficient search mechanism than the Landsat data previously used to search for colonies. The small size of these new colonies indicates that considerations of reproductive output in relation to metabolic rate during huddling is likely to be of interest. Some of the colonies exist in offshore habitats, something not previously reported for emperor penguins. Comparison with recent modelling results show that the geographic locations of all the newly found colonies are in areas likely to be highly vulnerable under business‐as‐usual greenhouse gas emissions scenarios, suggesting that population decreases for the species will be greater than previously thought. |
format |
Article in Journal/Newspaper |
author |
Fretwell, Peter Trathan, Phil |
spellingShingle |
Fretwell, Peter Trathan, Phil Discovery of new colonies by Sentinel2 reveals good and bad news for emperor |
author_facet |
Fretwell, Peter Trathan, Phil |
author_sort |
Fretwell, Peter |
title |
Discovery of new colonies by Sentinel2 reveals good and bad news for emperor |
title_short |
Discovery of new colonies by Sentinel2 reveals good and bad news for emperor |
title_full |
Discovery of new colonies by Sentinel2 reveals good and bad news for emperor |
title_fullStr |
Discovery of new colonies by Sentinel2 reveals good and bad news for emperor |
title_full_unstemmed |
Discovery of new colonies by Sentinel2 reveals good and bad news for emperor |
title_sort |
discovery of new colonies by sentinel2 reveals good and bad news for emperor |
publisher |
Wiley |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/526583/ https://nora.nerc.ac.uk/id/eprint/526583/1/rse2.176.pdf https://zslpublications.onlinelibrary.wiley.com/doi/full/10.1002/rse2.176 |
genre |
Emperor penguins |
genre_facet |
Emperor penguins |
op_relation |
https://nora.nerc.ac.uk/id/eprint/526583/1/rse2.176.pdf Fretwell, Peter orcid:0000-0002-1988-5844 Trathan, Phil orcid:0000-0001-6673-9930 . 2021 Discovery of new colonies by Sentinel2 reveals good and bad news for emperor. Remote Sensing in Ecology and Conservation, 7 (7). 139-153. https://doi.org/10.1002/rse2.176 <https://doi.org/10.1002/rse2.176> |
op_rights |
cc_by_nc_4 |
op_doi |
https://doi.org/10.1002/rse2.176 |
container_title |
Remote Sensing in Ecology and Conservation |
container_volume |
7 |
container_issue |
2 |
container_start_page |
139 |
op_container_end_page |
153 |
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1790599812248240128 |