| Autor: |
Prieto, Pablo Viany1,2 (AUTHOR) pablovprieto@gmail.com, dos Santos Seger, Guilherme Dubal3 (AUTHOR), Barros, Felipe Sodré Mendes4 (AUTHOR), de Oliveira-Filho, Ary Teixeira5 (AUTHOR), de Siqueira, Marinez Ferreira1 (AUTHOR) |
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| Zdroj: |
Forest Ecology & Management. Oct2023, Vol. 546, pN.PAG-N.PAG. 1p. |
| Abstrakt: |
• Composition of angiosperm tree and shrub lineages differs among vegetation types. • Lineages associated with dry habitats are more threatened by habitat loss. • Ericales, Caryophyllales and Santalales are the more threatened lineages. • Protecting and restoring dry habitats is needed to conserve phylogenetic diversity. Conservation assessments that aim to represent the pool of lineages that exist within a region are challenging due to incomplete knowledge of the spatial distribution and environmental preferences of distinct lineages. In this context, community-level models represent a powerful tool that can be used to predict spatial variation in phylogenetic composition. If lineages composition and habitat loss present a non-random spatial pattern within a region, we can expect that some lineages are more threatened by habitat loss than others. To test this hypothesis we combined multivariate analysis and a modelling approach to predict the phylogenetic composition of angiosperm tree/shrub communities in Rio de Janeiro State, southeastern Brazil, which is regarded as a plant endemism center within the Brazilian Atlantic forest biome. Then we correlated the resulting models with maps of vegetation cover and protected areas, to identify lineages subjected to higher habitat loss and clades that receive less protection. We found that angiosperm tree/shrub lineages are highly structured across distinct vegetation types and that a gradient of deforestation and land protection parallels the phylogenetic gradient formed by the distinct vegetation types. Consequently, some vegetation types and its associated angiosperm lineages are much more threatened by habitat loss and are less protected than others. Specifically, Ericales (asterids), Caryophyllales and Santalales are the most threatened clades in this region, along with their preferred habitats, seasonal forests and coastal white-sand forests (restingas). Protecting and restoring these dry habitats is critical for the conservation of tree and shrub phylogenetic diversity in the Brazilian Atlantic forest. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
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Full Text from ScienceDirect