Distribution and community structure analysis of shellfish biological resources in sea area adjacent to Nanji Islands
To understand the characteristics and distribution of benthic shellfish communities in the vicinity of the Nanji Islands,we conducted bottom trawl surveys in the surrounding waters during October 2022(autumn)and March 2023(spring).The findings reveal that a total of 49 benthic shellfish species were captured,spanning 2 classes,6 orders,and 17 families.During spring,the average abundance of benthic shellfish was(2 429±2 038)ind./Agt,with an average biomass of(4 849.79±2 513.84)g/Agt.In autumn,the average abundance was(1 149±1 589)ind./Agt,with an average biomass of(4 985.30±2 159.23)g/Agt.The primary dominant species comprised Turritella bacillum,Murex trapa,Tegillarca nodifera,Inquisitor jeffreysii,Bufonaria rana,Cancellaria sinensis and Trigonaphera bocageana.Notably,Turritella bacillum emerged as a dominant species in both spring and autumn,with dominance significantly surpassing that of other species.The dominance of benthic shellfish com-munities in this marine area appears relatively stable,with the community's functionality and nature being primar-ily governed by a select few species.This study provides a reference basis for the dynamic changes in the marine ecosystem of the Nanji Islands and offers foundational data for the protection of marine ecological environments.
万方数据
维普
