Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific
Abstract Quantitative subtidal surveys of fishes, macro‐invertebrates and sessile organisms at 33 sites within the Lord Howe Island Marine Park revealed a rich fauna and flora, including 164 fishes, 40 mobile invertebrate taxa, 53 coral and other sessile invertebrate taxa, 32 algal taxa, and two sea...
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crwiley:10.1002/aqc.1075 2024-09-30T14:40:50+00:00 Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific Edgar, Graham J. Davey, Adam Kelly, Geoff Mawbey, Ron B. Parsons, Karen 2009 http://dx.doi.org/10.1002/aqc.1075 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faqc.1075 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.1075 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Aquatic Conservation: Marine and Freshwater Ecosystems volume 20, issue 4, page 378-396 ISSN 1052-7613 1099-0755 journal-article 2009 crwiley https://doi.org/10.1002/aqc.1075 2024-09-11T04:13:51Z Abstract Quantitative subtidal surveys of fishes, macro‐invertebrates and sessile organisms at 33 sites within the Lord Howe Island Marine Park revealed a rich fauna and flora, including 164 fishes, 40 mobile invertebrate taxa, 53 coral and other sessile invertebrate taxa, 32 algal taxa, and two seagrasses. The biota in this newly‐zoned marine park was overwhelmingly tropical when species lists were tabulated; however, species with distributions centred on temperate coasts of eastern Australia and New Zealand occurred in disproportionately high densities compared with the tropical species. Lord Howe Island reefs were generally in good condition. Virtually no bleached coral was observed (0.2% of the reef surface; 0.8% of total hard coral cover). Living scleractinian coral comprised the predominant group of organisms growing on reef surfaces, with 25.5% cover overall. Other major taxa observed were brown algae (18.8% cover) and red algae (16.9% cover). Three distinctive community types were identified within the marine park—coral reefs, macroalgal beds and an offshore/open coast community. The distribution of these community types was strongly related to wave exposure, as indicated by an extremely high correlation with the first principal coordinates axis for biotic data ( R 2 =0.80). The close (<3 km) proximity of tropical coral and temperate macroalgal community types off Lord Howe Island is highly unusual, with localized patterns of nutrient enrichment suggested as the primary cause. The macroalgal community type is only known from a small area off the south‐western coast that is not protected from fishing. This community is considered highly susceptible to threats because of potential impacts of global warming and the possibility of expansion of sea urchin barrens. Coral bleaching and ocean acidification associated with global climate change also threaten the coral reef community, which includes relatively high numbers of endemic and near endemic fish species. Copyright © 2009 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ocean acidification Wiley Online Library Pacific New Zealand Aquatic Conservation: Marine and Freshwater Ecosystems 20 4 378 396 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Quantitative subtidal surveys of fishes, macro‐invertebrates and sessile organisms at 33 sites within the Lord Howe Island Marine Park revealed a rich fauna and flora, including 164 fishes, 40 mobile invertebrate taxa, 53 coral and other sessile invertebrate taxa, 32 algal taxa, and two seagrasses. The biota in this newly‐zoned marine park was overwhelmingly tropical when species lists were tabulated; however, species with distributions centred on temperate coasts of eastern Australia and New Zealand occurred in disproportionately high densities compared with the tropical species. Lord Howe Island reefs were generally in good condition. Virtually no bleached coral was observed (0.2% of the reef surface; 0.8% of total hard coral cover). Living scleractinian coral comprised the predominant group of organisms growing on reef surfaces, with 25.5% cover overall. Other major taxa observed were brown algae (18.8% cover) and red algae (16.9% cover). Three distinctive community types were identified within the marine park—coral reefs, macroalgal beds and an offshore/open coast community. The distribution of these community types was strongly related to wave exposure, as indicated by an extremely high correlation with the first principal coordinates axis for biotic data ( R 2 =0.80). The close (<3 km) proximity of tropical coral and temperate macroalgal community types off Lord Howe Island is highly unusual, with localized patterns of nutrient enrichment suggested as the primary cause. The macroalgal community type is only known from a small area off the south‐western coast that is not protected from fishing. This community is considered highly susceptible to threats because of potential impacts of global warming and the possibility of expansion of sea urchin barrens. Coral bleaching and ocean acidification associated with global climate change also threaten the coral reef community, which includes relatively high numbers of endemic and near endemic fish species. Copyright © 2009 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Edgar, Graham J. Davey, Adam Kelly, Geoff Mawbey, Ron B. Parsons, Karen |
spellingShingle |
Edgar, Graham J. Davey, Adam Kelly, Geoff Mawbey, Ron B. Parsons, Karen Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific |
author_facet |
Edgar, Graham J. Davey, Adam Kelly, Geoff Mawbey, Ron B. Parsons, Karen |
author_sort |
Edgar, Graham J. |
title |
Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific |
title_short |
Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific |
title_full |
Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific |
title_fullStr |
Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific |
title_full_unstemmed |
Biogeographical and ecological context for managing threats to coral and rocky reef communities in the Lord Howe Island Marine Park, south‐western Pacific |
title_sort |
biogeographical and ecological context for managing threats to coral and rocky reef communities in the lord howe island marine park, south‐western pacific |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/aqc.1075 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faqc.1075 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.1075 |
geographic |
Pacific New Zealand |
geographic_facet |
Pacific New Zealand |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Aquatic Conservation: Marine and Freshwater Ecosystems volume 20, issue 4, page 378-396 ISSN 1052-7613 1099-0755 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/aqc.1075 |
container_title |
Aquatic Conservation: Marine and Freshwater Ecosystems |
container_volume |
20 |
container_issue |
4 |
container_start_page |
378 |
op_container_end_page |
396 |
_version_ |
1811643312891756544 |