The distribution of benthic amphipod crustaceans in Indonesian seas

PeerJ

article

Tri Arfianti¹  Mark John Costello² 

[1] Research Center for Biology, Indonesian Institute of Sciences;School of Environment, University of Auckland;Faculty of Bioscience and Aquaculture, Nord University

关键词: Indonesia;    Biodiversity;    Biogeography;    Taxonomy;    Amphipoda;    Distribution;   

DOI  :  10.7717/peerj.12054

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Amphipod crustaceans are an essential component of tropical marine biodiversity. However, their distribution and biogeography have not been analysed in one of the world’s largest tropical countries nested in the Coral Triangle, Indonesia. We collected and identified amphipod crustaceans from eight sites in Indonesian waters and combined the results with data from 32 additional sites in the literature. We analysed the geographic distribution of 147 benthic amphipod crustaceans using cluster analysis and the ‘Bioregions Infomaps’ neural network method of biogeographic discrimination. We found five groups of benthic amphipod crustaceans which show relationships with sampling methods, depth, and substrata. Neural network biogeographic analysis indicated there was only one biogeographic region that matched with the global amphipod regions and marine biogeographic realms defined for all marine taxa. There was no support for Wallaces or other lines being marine biogeographic boundaries in the region. Species richness was lower than expected considering the region is within the Coral Triangle. We hypothesise that this low richness might be due to the intense fish predation which may have limited amphipod diversification. The results indicated that habitat rather than biogeography determines amphipod distribution in Indonesia. Therefore, future research needs to sample more habitats, and consider habitat in conservation planning.

【 授权许可】

CC BY