Parallel declines in species and genetic diversity in tropical forest fragments
| Autor: | Steven C. Le Comber, Tigga Kingston, Matthew J. Struebig, Akbar Zubaid, Eric J. Petit, Stephen J. Rossiter, Adura Mohd-Adnan |
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| Rok vydání: | 2011 |
| Předmět: |
0106 biological sciences
0303 health sciences Genetic diversity education.field_of_study Habitat fragmentation Ecological release Ecology Population Biodiversity Species diversity 15. Life on land Biology 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Alpha diversity Species richness education Ecology Evolution Behavior and Systematics 030304 developmental biology |
| Zdroj: | Ecology Letters. 14:582-590 |
| ISSN: | 1461-023X |
| DOI: | 10.1111/j.1461-0248.2011.01623.x |
| Popis: | The potential for parallel impacts of habitat change on multiple biodiversity levels has important conservation implications. We report on the first empirical test of the 'species-genetic diversity correlation' across co-distributed taxa with contrasting ecological traits in the context of habitat fragmentation. In a rainforest landscape undergoing conversion to oil palm, we show that depauperate species richness in fragments is mirrored by concomitant declines in population genetic diversity in the taxon predicted to be most susceptible to fragmentation. This association, not seen in the other species, relates to fragment area rather than isolation. While highlighting the over-simplification of extrapolating across taxa, we show that fragmentation presents a double jeopardy for some species. For these, conserving genetic diversity at levels of pristine forest could require sites 15-fold larger than those needed to safeguard species numbers. Importantly, however, each fragment contributes to regional species richness, with larger ones tending to contain more species. |
| Databáze: | OpenAIRE |
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