Rapid recovery of a coral reef at Darwin Island, Galapagos Islands
Surveys at Darwin Island in 2006 and 2007 have demonstrated that this northernmost Galapagos Islands coral reef has recovered significantly since the 1982–3 El Niño event. When first surveyed in 1975, this structural reef exhibited actively accreting frameworks of pocilloporid and poritid corals. Th...
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ftoceandocs:oai:aquadocs.org:1834/36237 2023-05-15T16:00:08+02:00 Rapid recovery of a coral reef at Darwin Island, Galapagos Islands Glynn, Peter W. Riegl, Bernhard Correa, Adrienne M. S. Baums, Iliana 1.67869 -92.0041 2009-06 application/pdf 6-13 http://hdl.handle.net/1834/36237 en eng 1390-2830 http://hdl.handle.net/1834/36237 http://aquaticcommons.org/id/eprint/21423 18060 2017-06-17 12:06:20 21423 Fundacion Charles Darwin Foundation Conservation Ecology Environment Ecuador el Niño el Nino bio-erosion Eucidaris galapagensis Diadema mexicanum Tubastrea coccinea Symbiodinium spp Arothron meleagris Cantherhinus dumerilli Coralliophila violacea Acanthaster planci article TRUE 2009 ftoceandocs 2023-04-06T17:05:36Z Surveys at Darwin Island in 2006 and 2007 have demonstrated that this northernmost Galapagos Islands coral reef has recovered significantly since the 1982–3 El Niño event. When first surveyed in 1975, this structural reef exhibited actively accreting frameworks of pocilloporid and poritid corals. The coral suffered severe mortality in 1983, resulting in the near total loss of pocilloporids and extensive partial mortality of poritid corals. Large sections of the reef had not recovered by 1992 and dead frameworks were subject to bio-erosion, although small numbers of sexual recruits of pocilloporid corals and numerous recruits plus regenerating patches of Porites lobata were present in some areas. An increase in live coral cover and recruitment was apparent through 2000 and 2002. Recent sampling at three sites along the reef has demonstrated mean (± 1 SD) live coral cover of 21.9 ± 1.7 % with P. lobata as the predominant species. Pocillopora spp. were present, but not so abundant as in earlier surveys. In spite of moderate erosion by echinoid and fish grazers, much of the original coral framework remained intact, providing a substrate for coral regeneration and recruitment. Recovery can be attributed to the original reef structure remaining intact, asexual regrowth of surviving tissues and sexual recruitment of poritid corals from surviving source populations. DEFRA Darwin Initiative Project 14-048 Conservation International US National Science Foundation grant OCE-0526361 Article in Journal/Newspaper Darwin Island IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Darwin Island ENVELOPE(-54.767,-54.767,-63.433,-63.433) Galapagos |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Conservation Ecology Environment Ecuador el Niño el Nino bio-erosion Eucidaris galapagensis Diadema mexicanum Tubastrea coccinea Symbiodinium spp Arothron meleagris Cantherhinus dumerilli Coralliophila violacea Acanthaster planci |
spellingShingle |
Conservation Ecology Environment Ecuador el Niño el Nino bio-erosion Eucidaris galapagensis Diadema mexicanum Tubastrea coccinea Symbiodinium spp Arothron meleagris Cantherhinus dumerilli Coralliophila violacea Acanthaster planci Glynn, Peter W. Riegl, Bernhard Correa, Adrienne M. S. Baums, Iliana Rapid recovery of a coral reef at Darwin Island, Galapagos Islands |
topic_facet |
Conservation Ecology Environment Ecuador el Niño el Nino bio-erosion Eucidaris galapagensis Diadema mexicanum Tubastrea coccinea Symbiodinium spp Arothron meleagris Cantherhinus dumerilli Coralliophila violacea Acanthaster planci |
description |
Surveys at Darwin Island in 2006 and 2007 have demonstrated that this northernmost Galapagos Islands coral reef has recovered significantly since the 1982–3 El Niño event. When first surveyed in 1975, this structural reef exhibited actively accreting frameworks of pocilloporid and poritid corals. The coral suffered severe mortality in 1983, resulting in the near total loss of pocilloporids and extensive partial mortality of poritid corals. Large sections of the reef had not recovered by 1992 and dead frameworks were subject to bio-erosion, although small numbers of sexual recruits of pocilloporid corals and numerous recruits plus regenerating patches of Porites lobata were present in some areas. An increase in live coral cover and recruitment was apparent through 2000 and 2002. Recent sampling at three sites along the reef has demonstrated mean (± 1 SD) live coral cover of 21.9 ± 1.7 % with P. lobata as the predominant species. Pocillopora spp. were present, but not so abundant as in earlier surveys. In spite of moderate erosion by echinoid and fish grazers, much of the original coral framework remained intact, providing a substrate for coral regeneration and recruitment. Recovery can be attributed to the original reef structure remaining intact, asexual regrowth of surviving tissues and sexual recruitment of poritid corals from surviving source populations. DEFRA Darwin Initiative Project 14-048 Conservation International US National Science Foundation grant OCE-0526361 |
format |
Article in Journal/Newspaper |
author |
Glynn, Peter W. Riegl, Bernhard Correa, Adrienne M. S. Baums, Iliana |
author_facet |
Glynn, Peter W. Riegl, Bernhard Correa, Adrienne M. S. Baums, Iliana |
author_sort |
Glynn, Peter W. |
title |
Rapid recovery of a coral reef at Darwin Island, Galapagos Islands |
title_short |
Rapid recovery of a coral reef at Darwin Island, Galapagos Islands |
title_full |
Rapid recovery of a coral reef at Darwin Island, Galapagos Islands |
title_fullStr |
Rapid recovery of a coral reef at Darwin Island, Galapagos Islands |
title_full_unstemmed |
Rapid recovery of a coral reef at Darwin Island, Galapagos Islands |
title_sort |
rapid recovery of a coral reef at darwin island, galapagos islands |
publishDate |
2009 |
url |
http://hdl.handle.net/1834/36237 |
op_coverage |
1.67869 -92.0041 |
long_lat |
ENVELOPE(-54.767,-54.767,-63.433,-63.433) |
geographic |
Darwin Island Galapagos |
geographic_facet |
Darwin Island Galapagos |
genre |
Darwin Island |
genre_facet |
Darwin Island |
op_source |
http://aquaticcommons.org/id/eprint/21423 18060 2017-06-17 12:06:20 21423 Fundacion Charles Darwin Foundation |
op_relation |
1390-2830 http://hdl.handle.net/1834/36237 |
_version_ |
1766395996390031360 |