Vol15 No.2: 280-295
【Title】Diversity patterns and phylogenetic structure of vascular plants along elevational gradients in a mountain ecosystem, South Korea
【Author】CHUN Jung-Hwa1; LEE Chang-Bae2*
【Addresses】1 Division of Forest Ecology, National Institute of Forest Science, Dongdaemungu, Seoul 20455, Republic of Korea; 2 Global Resources Division, Korea Forestry Promotion Institute, Gangseogu, Seoul 07570, Republic of Korea
【Citation】Chun JH, Lee CB (2018) Diversity patterns and phylogenetic structure of vascular plants along elevational gradients in a mountain ecosystem, South Korea. Journal of Mountain Science 15(2). https://doi.org.10.1007/s11629-017-4477-x
【Abstract】Recently, a phylogenetic diversity and community structure analysis as complementary to species-centric approaches in biodiversity studies provides new insights into the processes of community assembly. In this study, we analyzed species and phylogenetic diversity and community structures for woody and herbaceous plants along two elevational transects on Mt. Baekhwa, South Korea. The species richness and phylogenetic diversity of woody plants showed monotonic declining patterns with increasing elevation along all transects, whereas herbaceous plants showed different patterns, such as no relationship and a reversed unimodal pattern, between the study transects. The main drivers of these patterns were climate and habitat variables for woody and herbaceous plants, respectively. In addition, the phylogenetic community structure primarily showed phylogenetic clustering regulated by deterministic processes, especially environmental filtering, such as climate or habitat factors, along the two transects, although herbaceous plants along a transect depicted phylogenetic randomness as a result of a neutral process. Our findings suggest that deterministic and neutral processes may simultaneously control the community structures along small-scale elevational gradients such as local transects, although the deterministic process may be the predominant type.
【Keywords】Community structure; Deterministic process; Elevational gradient; Neutral process; Phylogenetic diversity; Species richness