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The challenge of conserving amphibian megadiversity in Madagascar.

Andreone F, Carpenter AI, Cox N, du Preez L, Freeman K, Furrer S, Garcia G, Glaw F, Glos J, Knox D, Köhler J, Mendelson JR, Mercurio V, Mittermeier RA, Moore RD, Rabibisoa NH, Randriamahazo H, Randrianasolo H, Raminosoa NR, Ramilijaona OR, Raxworthy CJ, Vallan D, Vences M, Vieites DR, Weldon C - PLoS Biol. (2008)

View Article: PubMed Central - PubMed

Affiliation: Museo Regionale di Scienze Naturali di Torino, Torino, Italy. franco.andreone@regione.piemonte.it

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Frogs from Madagascar constitute one of the richest groups of amphibian fauna in the world, with currently 238 described species; caecilians and salamanders are absent... So far, no extinctions of amphibian species have been reported from Madagascar, and chytridiomycosis, a threat for amphibians globally, has not been detected... However, we argue here that the unique combination of three factors qualifies Madagascar as a top priority for amphibian conservation: (a) an endemic, diverse amphibian fauna, as yet unaffected by emergent diseases, exists; (b) heavy anthropogenic pressures are put on the remaining primary vegetation and amphibian populations; and (c) a strong commitment of the national government to improve conserving biodiversity is present... Several species experience high levels of demand in the international pet trade, and over-collecting may represent a confounding threat where habitats are already compromised and populations are small... Accidental human-assisted introduction of amphibian chytrid may have catastrophic effects on the amphibian fauna... A proposal for new candidate areas to protect, based on a high-resolution multi-taxonomic analysis of plants, invertebrates, mammals, reptiles, and amphibians, has been developed... This study suggests that multi-taxonomic rather than single-taxon approaches are critical for identifying areas likely to promote the persistence of most species; hence, the areas identified in this study will benefit not only amphibians but other groups as well... ACSAM thus represents an important step in national implementation of the Amphibian Conservation Action Plan (ACAP)... The initial results of this workshop are now emerging... A variety of amphibian species from Madagascar will be exposed in a South African lab to chytrid infection, to understand their susceptibility to chytridiomycosis... However, significant investments from major conservation agencies will also be necessary to generate momentum... Madagascar may be the only worldwide amphibian diversity hot spot still in a pre-decline phase where intensive pro-active conservation measures are feasible, and where the impacts of climate change can be measured without the confounding influences of emergent diseases such as chytrid fungus... This opportunity to preserve a globally significant and intact amphibian sanctuary should not be missed, yet ironically, its pre-decline status could actually hinder timely conservation action being taken.

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Habitat Fragments as Last Refuges for Amphibian DiversityIn many largely deforested areas of Madagascar, small habitat fragments remain, which harbor significant amphibian diversity, and may allow the survival of yet undiscovered range-restricted species. So far no amphibian extinctions have been detected for Madagascar. A survey of the pictured forest fragment west of Ambatondrazaka in 2008 yielded 12 frog species, one of which is new to science.
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pbio-0060118-g002: Habitat Fragments as Last Refuges for Amphibian DiversityIn many largely deforested areas of Madagascar, small habitat fragments remain, which harbor significant amphibian diversity, and may allow the survival of yet undiscovered range-restricted species. So far no amphibian extinctions have been detected for Madagascar. A survey of the pictured forest fragment west of Ambatondrazaka in 2008 yielded 12 frog species, one of which is new to science.

Mentions: An important and timely opportunity for conservation in Madagascar exists since President Marc Ravalomanana announced at the Durban World Park Congress in 2003 a commitment to triple the surface of Madagascar's network of protected areas. This declaration gave rise to the so-called Madagascar Action Plan, a political process which is generating strategies for development and conservation. Since 2003, the protected area network has nearly been doubled, and an opportunity exists now to protect small fragments of remaining habitat that are critical for many restricted-range endemic amphibians (Figure 2). A proposal for new candidate areas to protect, based on a high-resolution multi-taxonomic analysis of plants, invertebrates, mammals, reptiles, and amphibians, has been developed [14]. This study suggests that multi-taxonomic rather than single-taxon approaches are critical for identifying areas likely to promote the persistence of most species; hence, the areas identified in this study will benefit not only amphibians but other groups as well.


The challenge of conserving amphibian megadiversity in Madagascar.

Andreone F, Carpenter AI, Cox N, du Preez L, Freeman K, Furrer S, Garcia G, Glaw F, Glos J, Knox D, Köhler J, Mendelson JR, Mercurio V, Mittermeier RA, Moore RD, Rabibisoa NH, Randriamahazo H, Randrianasolo H, Raminosoa NR, Ramilijaona OR, Raxworthy CJ, Vallan D, Vences M, Vieites DR, Weldon C - PLoS Biol. (2008)

Habitat Fragments as Last Refuges for Amphibian DiversityIn many largely deforested areas of Madagascar, small habitat fragments remain, which harbor significant amphibian diversity, and may allow the survival of yet undiscovered range-restricted species. So far no amphibian extinctions have been detected for Madagascar. A survey of the pictured forest fragment west of Ambatondrazaka in 2008 yielded 12 frog species, one of which is new to science.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2365978&req=5

pbio-0060118-g002: Habitat Fragments as Last Refuges for Amphibian DiversityIn many largely deforested areas of Madagascar, small habitat fragments remain, which harbor significant amphibian diversity, and may allow the survival of yet undiscovered range-restricted species. So far no amphibian extinctions have been detected for Madagascar. A survey of the pictured forest fragment west of Ambatondrazaka in 2008 yielded 12 frog species, one of which is new to science.
Mentions: An important and timely opportunity for conservation in Madagascar exists since President Marc Ravalomanana announced at the Durban World Park Congress in 2003 a commitment to triple the surface of Madagascar's network of protected areas. This declaration gave rise to the so-called Madagascar Action Plan, a political process which is generating strategies for development and conservation. Since 2003, the protected area network has nearly been doubled, and an opportunity exists now to protect small fragments of remaining habitat that are critical for many restricted-range endemic amphibians (Figure 2). A proposal for new candidate areas to protect, based on a high-resolution multi-taxonomic analysis of plants, invertebrates, mammals, reptiles, and amphibians, has been developed [14]. This study suggests that multi-taxonomic rather than single-taxon approaches are critical for identifying areas likely to promote the persistence of most species; hence, the areas identified in this study will benefit not only amphibians but other groups as well.

View Article: PubMed Central - PubMed

Affiliation: Museo Regionale di Scienze Naturali di Torino, Torino, Italy. franco.andreone@regione.piemonte.it

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

Frogs from Madagascar constitute one of the richest groups of amphibian fauna in the world, with currently 238 described species; caecilians and salamanders are absent... So far, no extinctions of amphibian species have been reported from Madagascar, and chytridiomycosis, a threat for amphibians globally, has not been detected... However, we argue here that the unique combination of three factors qualifies Madagascar as a top priority for amphibian conservation: (a) an endemic, diverse amphibian fauna, as yet unaffected by emergent diseases, exists; (b) heavy anthropogenic pressures are put on the remaining primary vegetation and amphibian populations; and (c) a strong commitment of the national government to improve conserving biodiversity is present... Several species experience high levels of demand in the international pet trade, and over-collecting may represent a confounding threat where habitats are already compromised and populations are small... Accidental human-assisted introduction of amphibian chytrid may have catastrophic effects on the amphibian fauna... A proposal for new candidate areas to protect, based on a high-resolution multi-taxonomic analysis of plants, invertebrates, mammals, reptiles, and amphibians, has been developed... This study suggests that multi-taxonomic rather than single-taxon approaches are critical for identifying areas likely to promote the persistence of most species; hence, the areas identified in this study will benefit not only amphibians but other groups as well... ACSAM thus represents an important step in national implementation of the Amphibian Conservation Action Plan (ACAP)... The initial results of this workshop are now emerging... A variety of amphibian species from Madagascar will be exposed in a South African lab to chytrid infection, to understand their susceptibility to chytridiomycosis... However, significant investments from major conservation agencies will also be necessary to generate momentum... Madagascar may be the only worldwide amphibian diversity hot spot still in a pre-decline phase where intensive pro-active conservation measures are feasible, and where the impacts of climate change can be measured without the confounding influences of emergent diseases such as chytrid fungus... This opportunity to preserve a globally significant and intact amphibian sanctuary should not be missed, yet ironically, its pre-decline status could actually hinder timely conservation action being taken.

Show MeSH