寒武纪特异埋藏化石库保存了海洋生物群落比较完备的生态结构信息, 为群落生态研究提供了重要化石证据。贵州寒武纪斜坡相区的凯里生物群(乌溜期早期)具有很高的生物多样性和个体丰度, 但缺乏定量生态学分析。本研究对贵州丹寨南皋地区三湾剖面的凯里生物群进行了定量化分析, 鉴定出节肢动物、腕足动物、棘皮动物、曳鳃动物、软体动物、开腔骨动物、刺胞动物和海绵动物8个动物门类, 包含46属57种, 划分出12种生态类型。其中, 节肢动物具有最高的生物多样性(占比60.9%)和个体丰度(80.4%); 整个群落以表栖移动型为主, 游泳滤食型为辅, 显示出这一时期华南斜坡较深水环境下独特的生物群落空间结构。

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.

国家自然科学基金(42162003)、贵州省科技计划项目(黔科合基础-JC[2024]重点008, 黔科合平台ZSYS[2024]002)联合资助