Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.

Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.

The temperatures of the world’s oceans are increasing at an accelerating rate. Recent estimates indicate that the magnitude of these increases might be as much as several degrees over the next century and undoubtedly, the impacts of these changes on the Earth’s ecosystems are likely to become increasingly obvious. Coral reefs have already shown dramatic responses to the increasing ocean temperatures. Under normal temperature conditions, reef-building corals, which form the foundation of coral reefs, are living very near the maximum sea temperatures that they can tolerate. If they are exposed to even modest increases in sea temperatures, perhaps only 1° C - 2° C, they become stressed and often ‘bleach’. This bleaching of corals is a response to stress, and it occurs when the symbiotic unicellular algae (zooxanthellae) that lives within the tissues of the coral polyp, are expelled or lost. The coral can survive for short periods without these zooxanthellae but unless the stress that caused the bleaching subsides and new zooxanthellae are incorporated into the tissue of the coral, the coral will die. For several months in early 1998, the temperature of surface waters (< 10 m) over much of the world’s tropical oceans increased between 3° C and 5° C. As a result, corals on reefs throughout the world bleached and, unfortunately, many died. The mortality of corals was particularly serious in the central and western Indian Ocean, where as many as 50% to 95% of all corals died.

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Bibliographic Details
Other Authors: Souter, David
Format: Report biblioteca
Language:English
Published: CORDIO & SAREC, Stockholm University 2000
Subjects:Coral reefs, Degradation,
Online Access:http://hdl.handle.net/1834/309
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spelling dig-aquadocs-1834-3092021-05-19T06:22:05Z Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000. Souter, David Obura, David Linde, Olof Coral reefs Degradation The temperatures of the world’s oceans are increasing at an accelerating rate. Recent estimates indicate that the magnitude of these increases might be as much as several degrees over the next century and undoubtedly, the impacts of these changes on the Earth’s ecosystems are likely to become increasingly obvious. Coral reefs have already shown dramatic responses to the increasing ocean temperatures. Under normal temperature conditions, reef-building corals, which form the foundation of coral reefs, are living very near the maximum sea temperatures that they can tolerate. If they are exposed to even modest increases in sea temperatures, perhaps only 1° C - 2° C, they become stressed and often ‘bleach’. This bleaching of corals is a response to stress, and it occurs when the symbiotic unicellular algae (zooxanthellae) that lives within the tissues of the coral polyp, are expelled or lost. The coral can survive for short periods without these zooxanthellae but unless the stress that caused the bleaching subsides and new zooxanthellae are incorporated into the tissue of the coral, the coral will die. For several months in early 1998, the temperature of surface waters (< 10 m) over much of the world’s tropical oceans increased between 3° C and 5° C. As a result, corals on reefs throughout the world bleached and, unfortunately, many died. The mortality of corals was particularly serious in the central and western Indian Ocean, where as many as 50% to 95% of all corals died. THE WORLD BANK-Environment Department Sida WWF The Government of Finland FRN ett MISTRA Published 2005-07-12T09:10:31Z 2005-07-12T09:10:31Z 2000 Report Non-Refereed 91-973959-1-9 http://hdl.handle.net/1834/309 en 659058 bytes 452492 bytes 705346 bytes 428357 bytes 2232612 bytes application/pdf application/pdf application/pdf application/pdf application/pdf 205pp. Indian Ocean CORDIO & SAREC, Stockholm University Stockholm, Sweden
institution UNESCO
collection DSpace
country Francia
countrycode FR
component Bibliográfico
access En linea
databasecode dig-aquadocs
tag biblioteca
region Europa del Oeste
libraryname Repositorio AQUADOCS
language English
topic Coral reefs
Degradation
Coral reefs
Degradation
spellingShingle Coral reefs
Degradation
Coral reefs
Degradation
Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.
description The temperatures of the world’s oceans are increasing at an accelerating rate. Recent estimates indicate that the magnitude of these increases might be as much as several degrees over the next century and undoubtedly, the impacts of these changes on the Earth’s ecosystems are likely to become increasingly obvious. Coral reefs have already shown dramatic responses to the increasing ocean temperatures. Under normal temperature conditions, reef-building corals, which form the foundation of coral reefs, are living very near the maximum sea temperatures that they can tolerate. If they are exposed to even modest increases in sea temperatures, perhaps only 1° C - 2° C, they become stressed and often ‘bleach’. This bleaching of corals is a response to stress, and it occurs when the symbiotic unicellular algae (zooxanthellae) that lives within the tissues of the coral polyp, are expelled or lost. The coral can survive for short periods without these zooxanthellae but unless the stress that caused the bleaching subsides and new zooxanthellae are incorporated into the tissue of the coral, the coral will die. For several months in early 1998, the temperature of surface waters (< 10 m) over much of the world’s tropical oceans increased between 3° C and 5° C. As a result, corals on reefs throughout the world bleached and, unfortunately, many died. The mortality of corals was particularly serious in the central and western Indian Ocean, where as many as 50% to 95% of all corals died.
author2 Souter, David
author_facet Souter, David
format Report
topic_facet Coral reefs
Degradation
title Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.
title_short Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.
title_full Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.
title_fullStr Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.
title_full_unstemmed Coral reef degradation in the Indian Ocean. Status reports and project presentation 2000.
title_sort coral reef degradation in the indian ocean. status reports and project presentation 2000.
publisher CORDIO & SAREC, Stockholm University
publishDate 2000
url http://hdl.handle.net/1834/309
_version_ 1756075356329082880

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