دورية أكاديمية
Diversity and composition of herbaceous angiosperms along gradients of elevation and forest-use intensity.
| العنوان: | Diversity and composition of herbaceous angiosperms along gradients of elevation and forest-use intensity. |
|---|---|
| المؤلفون: | Jorge Antonio Gómez-Díaz, Thorsten Krömer, Holger Kreft, Gerhard Gerold, César Isidro Carvajal-Hernández, Felix Heitkamp |
| المصدر: | PLoS ONE, Vol 12, Iss 8, p e0182893 (2017) |
| بيانات النشر: | Public Library of Science (PLoS), 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Medicine, Science |
| الوصف: | Terrestrial herbs are important elements of tropical forests; however, there is a lack of research on their diversity patterns and how they respond to different intensities of forest-use. The aim of this study was to analyze the diversity of herbaceous angiosperms along gradients of elevation (50 m to 3500 m) and forest-use intensity on the eastern slopes of the Cofre de Perote, Veracruz, Mexico. We recorded the occurrence of all herbaceous angiosperm species within 120 plots of 20 m x 20 m each. The plots were located at eight study locations separated by ~500 m in elevation and within three different habitats that differ in forest-use intensity: old-growth, degraded, and secondary forest. We analyzed species richness and floristic composition of herb communities among different elevations and habitats. Of the 264 plant species recorded, 31 are endemic to Mexico. Both α- and γ-diversity display a hump-shaped relation to elevation peaking at 2500 m and 3000 m, respectively. The relative contribution of between-habitat β-diversity to γ-diversity also showed a unimodal hump whereas within-habitat β-diversity declined with elevation. Forest-use intensity did not affect α-diversity, but β-diversity was high between old-growth and secondary forests. Overall, γ-diversity peaked at 2500 m (72 species), driven mainly by high within- and among-habitat β-diversity. We infer that this belt is highly sensitive to anthropogenic disturbance and forest-use intensification. At 3100 m, high γ-diversity (50 species) was driven by high α- and within-habitat β-diversity. There, losing a specific forest area might be compensated if similar assemblages occur in nearby areas. The high β-diversity and endemism suggest that mixes of different habitats are needed to sustain high γ-richness of terrestrial herbs along this elevational gradient. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1932-6203 |
| Relation: | http://europepmc.org/articles/PMC5549743?pdf=render; https://doaj.org/toc/1932-6203 |
| DOI: | 10.1371/journal.pone.0182893 |
| URL الوصول: | https://doaj.org/article/79b4b4362fcd4635b0b1d8935f7b0910 |
| رقم الأكسشن: | edsdoj.79b4b4362fcd4635b0b1d8935f7b0910 |
| قاعدة البيانات: | Directory of Open Access Journals |
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