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Community structure and composition of the Cambrian Chengjiang biota
Zhao FangChen (赵方臣)1; Zhu MaoYan (朱茂炎)1; Hu ShiXue1,2

Based on previously published species data (228 species in over 18 phyla) and field sampling (114 species and 18406 individuals) in the Chengjiang-Haikou-Anning area, we analyzed quantitatively the paleocommunity composition and structure of the Cambrian Chengjiang biota (Cambrian Series 2, eastern Yunnan, China). Arthropods dominate the community both in species diversity (species: 37%) and in abundance (individuals: 51.8%). Priapulids (individuals: 22.6%) and brachiopods (individuals: 16.3%) follow in abundance rank. The arthropod Kunmingella douvillei (26.2%), the priapulid Cricocosmia jinning-ensis (15.4%), and the brachiopod Diandongia pista (11%) are the three most abundant species. Ecological analyses show that the community was dominated by epifaunal organisms (species: 63%, individuals: 68.4%) followed by infaunal organisms (species: 11.9%, individuals: 25.9%), nektobenthic organisms (species: 11.5%, individuals: 2.6%), and pelagic organisms (species: 5.3%, individuals: 3.1%). The diverse feeding strategies, dominated by suspension feeders (species: 35.6%, individuals: 26.1%) and hunter/scavengers (species: 31.1%, individuals: 40.4%), indicate the former existence of a complex food chain and intense competition. Epifaunal vagrant omnivores (28.2%), infaunal vagrant hunter/scavengers (19.8%), epifaunal sessile suspension feeders (17.7%), and epifaunal vagrant hunter/scavengers (15.3%) were the most abundant ecological groups, represented primarily by arthropods, poriferans, priapulids, and brachiopods. Ecological group analyses reveal that the early Cambrian Chengjiang biota is similar in community patterns and functional relations to modern biotas in shallow marine settings.

KeywordChengjiang Biota Cambrian Cambrian Explosion Evolution Paleocommunities
WOS KeywordMaotianshan Shale Biota ; Burgess Shale ; South China ; Deuterostome Evolution ; Lagerstatte ; Paleoecology ; Chordate ; Yunnanozoan ; Vertebrates ; Explosion
Funding ProjectNational Natural Science Foundation of China[40725005] ; National Natural Science Foundation of China[40930211] ; National Natural Science Foundation of China[J0630967] ; National Basic Research Program of China[2006CB806401]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000284845600006
Funding OrganizationNational Natural Science Foundation of China ; National Basic Research Program of China
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Document Type期刊论文
Corresponding AuthorZhao FangChen (赵方臣); Zhu MaoYan (朱茂炎)
Affiliation1.Nanjing Univ, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
2.Chengdu Ctr China Geol Survey, Chengdu Inst Geol & Mineral Resources, Chengdu 610081, Peoples R China
Recommended Citation
GB/T 7714
Zhao FangChen ,Zhu MaoYan ,Hu ShiXue. Community structure and composition of the Cambrian Chengjiang biota[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(12):1784-1799.
APA Zhao FangChen ,Zhu MaoYan ,&Hu ShiXue.(2010).Community structure and composition of the Cambrian Chengjiang biota.SCIENCE CHINA-EARTH SCIENCES,53(12),1784-1799.
MLA Zhao FangChen ,et al."Community structure and composition of the Cambrian Chengjiang biota".SCIENCE CHINA-EARTH SCIENCES 53.12(2010):1784-1799.
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