Community composition and ecospace occupation of the Cambrian Kaili Biota in Danzhai County, Guizhou Province
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Abstract:
Cambrian Konservat-Lagerst?tten provide detailed insights into the ecological structures of marine communities and offer critical data for community ecology research. However, quantitative ecological analyses of the Cambrian Kaili Biota (Wuliuan, Miaolingian) in eastern Guizhou remain limited. Such analyses are essential for understanding high biodiversity and individual abundance within the biota. In this study, we used multivariate statistical analyses to analyze data on the Kaili Biota from the Sanwan section in Nangao County, eastern Guizhou. The fossil assemblage comprises 57 species in 46 genera, representing eight phyla (Arthropoda, Brachiopoda, Echinodermata, Priapulida, Hyolitha, Chancelloriids, Cnidaria, and Porifera) and 12 ecological types. Among these, arthropods exhibit the highest taxonomic diversity at the species level (60.9%) and individual abundance (80.4%). In terms of ecospace occupation, vagrant benthos dominate the community, followed by active swimming predators. This pattern reflects the unique ecospace occupation of the community on the Jiangnan Slope of the Yangtze Platform during the Cambrian Period.
