文献类型：期刊文献

英文题名：Niches of nine mangrove species in aSonneratia apetala-colonized area of Dongzhai Harbor, Hainan Island, China

作者：Wu, Feng[1,2] Liao, Baowen[1] Chen, Yujun[1] Jiang, Zhongmao[1] Guo, Yunpeng[1] Li, Mei[1]

第一作者：Wu, Feng

通信作者：Li, M[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Key Lab State Forestry Adm Trop Forestry Res, Guangzhou 510520, Peoples R China;[2]Zhaoqing Xinghu Natl Wetland Pk Management Ctr, Zhaoqing, Peoples R China

年份：2020

卷号：10

期号：20

起止页码：11838-11846

外文期刊名：ECOLOGY AND EVOLUTION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000574771100001)】；

基金：National Natural Science Foundation of China, Grant/Award Number: 4167060336

语种：英文

外文关键词：Dongzhai Harbor; Hainan Island; mangrove plant species; niche breadth; niche overlap; Sonneratia apetaladiffusion area

摘要：The distribution of mangroves is influenced by the environment. We aimed to understand the ecological adaptability of various mangrove species within the range of the exotic species,Sonneratia apetalaBuch.-Ham., in Dongzhai Harbor, Hainan Island, China. We used three niche breadth indexes (Simpson, Levins, and Shannon-Weiner) and two niche overlap indexes (Pianka and Levins) to quantitatively determine the niche characteristics of nine mangrove species. The results showed that the order of the niche breadth values of mangrove species was as follows:Aegiceras corniculatum(Linn.) Blanco > Kandelia obovataSheue et al. > Bruguiera gymnorrhiza(L.) Poir. > Avicennia marina(Forsk.) Vierh. Hailanci > S. apetala > S. caseolaris(L.) Engl. > Rhizophora stylosa Griff > Ceriops tagal(Perr.) C. B. Rob. > B. sexangula(Lour.) Poir. Pearson correlation analysis revealed that the niche breadth of each population was significantly correlated with the importance value of the population in the whole sample (R-1 = R-2 = 0.771, R-3 = 0.644,p < .05). The nine mangrove species were divided into three groups by Bray-Curtis cluster analysis; the groups were similar to the distribution of mangrove species in the natural state as determined by tide level. Niche similarity analysis showed that the niche similarity of most mangroves ranged between 0.5 and 0.8 and that the species pairsA. corniculatum-B. gymnorrhiza,A. corniculatum-Avicennia marina,andK. obovata-S. caseolariswere characterized by large niche similarity ratios. Although it had a moderate niche breadth,S. apetalahad a relatively broad niche overlap with mangroves in the mid- and low-tide zones (S. caseolaris,A. corniculatum,K. obovata, andAvicennia marina), a moderate overlap withB. gymnorrhizaandR. stylosa, only a slight overlap withC. tagal, and no overlap withB. sexangular. There was no obvious linear relationship between niche width and niche overlap of mangroves. Due to its inefficiency in utilizing certain resources and relatively high degree of resource selection, it seems likely thatS. apetalawill not pose a threat to the survival of native plants, let alone completely replace native species.