Predicting the geographical distribution of Acropora muricata in two lesser-known reef systems of the Andaman Sea
Abstract Coral reefs are undergoing deterioration worldwide due to climate and anthropogenic stressors, notwithstanding the enormous support they provide to marine biodiversity and the essential services to humans. Knowledge about the extent of hard coral distribution is a key requirement for designing conservation strategies such as Marine Protected Areas(MPA). The transboundary island groups of the Andaman Sea—Andaman, Nicobar and Mergui Archipelagos—are largely underexplored and less managed due to their remoteness and various political constraints. In the present study, we developed a maximum entropy (Maxent) based distribution model for the stony coral Acropora muricata by using records of its occurrence and 14 remotely sensed environmental variables along with bathymetry and distance from the shore as predictors. Our model predicted this species’ current distribution, with the mean area under the receiver operating characteristic curve (AUC) value of 0.908. The important predictor variables determining the distribution were bathymetry, distance from the shore, calcite, PAR, and ocean current. Many of the unexplored islands, seamounts and shallow patches of the Andaman Sea such as Cinque Island, Invisible Bank, Batti Malv Island, Tillanchong island, Narcondam, Barren island, Than, Dunkin, Cash Island, the southern tip of Zadetkyi, Bruer, Graham, Clara Island, Buda, Lord Loughborough Island, Quoin Island, Tachai, Koh Bon, Ko Payang and several other unnamed sites were predicted as potential areas of occurrence of A. muricata as per this study. The presence of this species, which is the most common hard coral in the Indo-Pacific, indicates the existence of coral reef ecosystems in these areas. Such habitats and the region’s proximity towards the coral triangle imply better chances of connectivity and resilience. This study will contribute toward designing a transboundary conservation network and developing management plans to maintain sustainable fisheries..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:26 |
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| Enthalten in: |
Journal of coastal conservation - 26(2022), 6 vom: Dez. |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Anakha, M. [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Hard corals |
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| Anmerkungen: |
© The Author(s), under exclusive licence to Springer Nature B.V. 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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| doi: |
10.1007/s11852-022-00925-9 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
OLC2080243918 |
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| 520 | |a Abstract Coral reefs are undergoing deterioration worldwide due to climate and anthropogenic stressors, notwithstanding the enormous support they provide to marine biodiversity and the essential services to humans. Knowledge about the extent of hard coral distribution is a key requirement for designing conservation strategies such as Marine Protected Areas(MPA). The transboundary island groups of the Andaman Sea—Andaman, Nicobar and Mergui Archipelagos—are largely underexplored and less managed due to their remoteness and various political constraints. In the present study, we developed a maximum entropy (Maxent) based distribution model for the stony coral Acropora muricata by using records of its occurrence and 14 remotely sensed environmental variables along with bathymetry and distance from the shore as predictors. Our model predicted this species’ current distribution, with the mean area under the receiver operating characteristic curve (AUC) value of 0.908. The important predictor variables determining the distribution were bathymetry, distance from the shore, calcite, PAR, and ocean current. Many of the unexplored islands, seamounts and shallow patches of the Andaman Sea such as Cinque Island, Invisible Bank, Batti Malv Island, Tillanchong island, Narcondam, Barren island, Than, Dunkin, Cash Island, the southern tip of Zadetkyi, Bruer, Graham, Clara Island, Buda, Lord Loughborough Island, Quoin Island, Tachai, Koh Bon, Ko Payang and several other unnamed sites were predicted as potential areas of occurrence of A. muricata as per this study. The presence of this species, which is the most common hard coral in the Indo-Pacific, indicates the existence of coral reef ecosystems in these areas. Such habitats and the region’s proximity towards the coral triangle imply better chances of connectivity and resilience. This study will contribute toward designing a transboundary conservation network and developing management plans to maintain sustainable fisheries. | ||
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| 650 | 4 | |a Mergui Archipelago | |
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| 700 | 1 | |a Menon, Nandini N. |0 (orcid)0000-0003-1132-0192 |4 aut | |
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