Changes in phylogenetic community structure of the seedling layer following hurricane disturbance in a human-impacted tropical forest
| Autor: | María Uriarte, Jimena Forero-Montaña, Liza S. Comita, Jess K. Zimmerman, W. J. Kress, Jill Thompson, María Natalia Umaña, Nathan G. Swenson |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
tropical forest dynamics regeneration niche 010504 meteorology & atmospheric sciences cyclone Luquillo hurricane Ecological succession 010603 evolutionary biology 01 natural sciences Ecology and Environment Abundance (ecology) wind disturbance 0105 earth and related environmental sciences Abiotic component biology Forest dynamics Ecology Puerto Rico Community structure Forestry environmental filtering lcsh:QK900-989 biology.organism_classification seed mass succession Phylogenetic diversity Disturbance (ecology) density dependence Seedling lcsh:Plant ecology community assembly phylogenetic diversity |
| Zdroj: | Forests, Vol 9, Iss 9, p 556 (2018) Forests Volume 9 Issue 9 |
| DOI: | 10.3390/f9090556 |
| Popis: | Disturbance plays a key role in shaping forest composition and diversity. We used a community phylogeny and long-term forest dynamics data to investigate biotic and abiotic factors shaping tropical forest regeneration following both human and natural disturbance. Specifically, we examined shifts in seedling phylogenetic and functional (i.e., seed mass) community structure over a decade following a major hurricane in a human-impacted forest in Puerto Rico. Phylogenetic relatedness of the seedling community decreased in the first five years post-hurricane and then increased, largely driven by changes in the abundance of a common palm species. Functional structure (based on seed mass) became increasingly clustered through time, due to canopy closure causing small-seeded, light-demanding species to decline in abundance. Seedling neighbor density and phylogenetic relatedness negatively affected seedling survival, which likely acted to reduce phylogenetic relatedness within seedling plots. Across the study site, areas impacted in the past by high-intensity land use had lower or similar phylogenetic relatedness of seedling communities than low-intensity past land use areas, reflecting interactive effects of human and natural disturbance. Our study demonstrates how phylogenetic and functional information offer insights into the role of biotic and abiotic factors structuring forest recovery following disturbance. |
| Databáze: | OpenAIRE |
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