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Different mechanisms underlie similar species-area relationships in two tropical archipelagoes.
Li, Shengchun; Tu, Tieyao; Li, Shaopeng; Yang, Xian; Zheng, Yong; Guo, Liang-Dong; Zhang, Dianxiang; Jiang, Lin.
Afiliação
  • Li S; Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
  • Tu T; ECNU-Alberta Joint Lab for Biodiversity Study, Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China.
  • Li S; School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.
  • Yang X; Jiangxi Academy of Forestry, Nanchang 330032, China.
  • Zheng Y; Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
  • Guo LD; ECNU-Alberta Joint Lab for Biodiversity Study, Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China.
  • Zhang D; School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.
  • Jiang L; Institute of Eco-Chongming (IEC), Shanghai 202162, China.
Plant Divers ; 46(2): 238-246, 2024 Mar.
Article em En | MEDLINE | ID: mdl-38807910
ABSTRACT
Despite much research in the field of island biogeography, mechanisms regulating insular diversity remain elusive. Here, we aim to explore mechanisms underlying plant species-area relationships in two tropical archipelagoes in the South China Sea. We found positive plant species-area relationships for both coral and continental archipelagoes. However, our results showed that different mechanisms contributed to similar plant species-area relationships between the two archipelagoes. For coral islands, soil nutrients and spatial distance among communities played major roles in shaping plant community structure and species diversity. By contrast, the direct effect of island area, and to a lesser extent, soil nutrients determined plant species richness on continental islands. Intriguingly, increasing soil nutrients availability (N, P, K) had opposite effects on plant diversity between the two archipelagoes. In summary, the habitat quality effect and dispersal limitation are important for regulating plant diversity on coral islands, whereas the passive sampling effect, and to a lesser extent, the habitat quality effect are important for regulating plant diversity on continental islands. More generally, our findings indicate that island plant species-area relationships are outcomes of the interplay of both niche and neutral processes, but the driving mechanisms behind these relationships depends on the type of islands.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Plant Divers Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Plant Divers Ano de publicação: 2024 Tipo de documento: Article