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1.
PLoS Biol ; 18(9): e3000823, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32925901

RESUMO

Global change causes widespread decline of coral reefs. In order to counter the anticipated disappearance of coral reefs by the end of this century, many initiatives are emerging, including creation of marine protected areas (MPAs), reef restoration projects, and assisted evolution initiatives. Such efforts, although critically important, are locally constrained. We propose to build a "Noah's Ark" biological repository for corals that taps into the network of the world's public aquaria and coral reef scientists. Public aquaria will serve not only as a reservoir for the purpose of conservation, restoration, and research of reef-building corals but also as a laboratory for the implementation of operations for the selection of stress-resilient and resistant genotypes. The proposed project will provide a global dimension to coral reef education and protection as a result of the involvement of a network of public and private aquaria.


Assuntos
Antozoários , Conservação dos Recursos Naturais/métodos , Recifes de Corais , Animais , Biodiversidade
2.
Environ Sci Pollut Res Int ; 23(1): 49-60, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25850738

RESUMO

Research has been conducted within the framework of the French Initiative for Coral Reefs (IFRECOR) to assess pesticide pollution levels in the coral reef trophic webs in French Polynesia. Unexpected widespread contamination by herbicides was found in algae, fishes and macro-invertebrates located at various levels of the reef trophic web. Concentrations in organisms investigated were for the majority below the lowest observable effect level and do not pose a dietary risk to native population who subsist on these fish. However, the widespread contamination may affect the reef ecosystem in the future as coral symbiotic algae, Symbidinium sp. (Dinophyta) are particularly sensitive to photosystem II herbicides, particularly the substituted urea and triazine derivatives.


Assuntos
Biota , Recifes de Corais , Herbicidas , Poluentes Químicos da Água , Animais , Antozoários , Biota/efeitos dos fármacos , Ecossistema , Peixes , Herbicidas/análise , Polinésia , Poluentes Químicos da Água/análise
3.
Proc Biol Sci ; 282(1810)2015 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-26063849

RESUMO

A 30-year study of temporal changes in gastropod community structure on the reefs of a Pacific Ocean atoll (Fangataufa, Tuamotu Archipelago) subjected to atmospheric nuclear tests during the 1960s offered the opportunity for an otherwise impossible field experiment that could help ecologists understand mollusc primary succession. Reef molluscs were partly or entirely wiped out by the heat of the nuclear tests and the reefs were recolonized by ocean larvae. On all reefs, community composition before the tests was very different from what it evolved to afterwards. A new method of analysis was developed to study the temporal variation in community composition before versus after the tests (temporal beta diversity). Analyses showed that community compositions diverged through time among the reefs. Only some species can survive the harsh conditions of supralittoral zones, so the same species recolonized them; environmental filtering controlled the development of the new communities. In the reef flat and edge zones, differences in community composition seem to be the result of neutral stochastic colonization by larvae coming from the open ocean. All reefs developed a community composition quite different from that before the nuclear tests.


Assuntos
Biodiversidade , Moluscos/fisiologia , Moluscos/efeitos da radiação , Armas Nucleares , Exposição à Radiação , Animais , Recifes de Corais , Polinésia , Monitoramento de Radiação , Estações do Ano
4.
Mar Pollut Bull ; 64(6): 1096-105, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22349467

RESUMO

The keynote paper by Garrett Hardin 44 years ago introduced the term 'tragedy of the commons' into our language (Hardin, 1968); this term is now used widely, but it is neither universally accepted nor fully understood. Irrespective, the 'tragedy of the commons' is an increasing reality for more than 500 million people that rely on the biodiversity resources and services of tropical coral reefs, mangrove forests, seagrass beds and associated fisheries. These natural resources continue to decline despite major advances in our scientific understanding of how ecosystems and human populations interact, and the application of considerable conservation and management efforts at scales from local user communities to oceans. Greater effort will be required to avert increasing damage from over-exploitation, pollution and global climate change; all deriving from increasing exploitation driven by poverty and progress i.e. continuing to expand development indefinitely and extraction of resources at industrial scales. However, the 'tragedy' concept has been widely criticized as a simple metaphor for a much larger set of problems and solutions. We argue that the 'tragedy' is essentially real and will continue to threaten the lives of millions of people unless there are some major moral and policy shifts to reverse increasing damage to coastal habitats and resources. We agree with the conclusion by Hardin that the solution to the tragedy will not be through the application of natural sciences, but via implementing exceedingly difficult and controversial moral decisions. An extreme example of a moral and controversial direction suggested by Hardin was in re-examining the 'freedom to breed' as an inherent human value. The need for 'moral decisions' is even greater in 2012.


Assuntos
Conservação dos Recursos Naturais , Ecossistema , Clima Tropical , Poluição da Água/estatística & dados numéricos , Biodiversidade , Mudança Climática , Política Ambiental , Poluição da Água/prevenção & controle
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