Jiao Hai-feng, Shi Hui-xiong, You Zhong-jie, Lou Zhi-jun, Liu Hong-dan, Jin Xin-fei
Ningbo Academy of Oceanology and Fishery, Ningbo 315012, Zhejiang, China.
Ying Yong Sheng Tai Xue Bao. 2011 Aug;22(8):2173-8.
In order to understand the current status of macrobenthos in intertidal zone of Yushan Islands, macrobenthos samples were collected from 5 sections in the intertidal zone in four seasons from March 2009 to January 2010, with the density, biomass, secondary productivity, and P/B value of the macrobenthos investigated by using Brey's empirical formula. The mean density of the marobenthos was 1419.5 ind x m(-2), mean biomass in ash free dry mass (AFDM) was 565.53 g x m(-2), mean annual secondary productivity was 285.58 g x m(-2) x a(-1) (AFDM), and mean annual P/B value was 0.51. The secondary productivity was mainly affected by mollusca and gastropda, with five critical species Septifer virgatus, Modiolus modiolus, Serpulorbis imbricata, Tetraclita japonica, and T. squamosa contributed 84.0% of the total. The P/B value in the study area was lower than that in other sea areas, showing that the generation turnover rate of the macrobenthos in the intertidal zone of Yushan Islands was slower, and the community structure was more stable.
为了解玉山列岛潮间带大型底栖动物的现状，于2009年3月至2010年1月的四季中，在潮间带的5个断面采集大型底栖动物样本，运用布雷伊经验公式对大型底栖动物的密度、生物量、次级生产力及P/B值进行调查。大型底栖动物的平均密度为1419.5 ind x m(-2)，以无灰干质量（AFDM）计的平均生物量为565.53 g x m(-2)，年平均次级生产力为285.58 g x m(-2) x a(-1)（AFDM），年平均P/B值为0.51。次级生产力主要受软体动物和腹足纲动物影响，其中，条纹隔贻贝、偏顶蛤、复瓦小蛇螺、日本笠藤壶和鳞笠藤壶这5种关键物种占总量的84.0%。研究区域的P/B值低于其他海域，表明玉山列岛潮间带大型底栖动物的世代周转速率较慢，群落结构更稳定。
