福建闽江口潮间带大型底栖动物次级生产力时空特征  

Temporal-spatial characteristics of secondary production of macrofauna in Minjiang Estuary

作　　者：周细平 吴培芳[1] 李贞 吴茜 陈逸欣 刘康格 刘东艳 王玉珏[4] 王跃启[4] ZHOU Xiping;WU Peifang;LI Zhen;WU Xi;CHEN Yixin;LIU Kangge;LIU Dongyan;WANG Yujue;WANG Yueqi(School of Environmental Science and Engineering,Xiamen University Tan Kah Kee College,Zhangzhou 363105,China;Key Laboratory of Estuarine Ecological Security and Environmental Health,Xiamen University Tan Kah Kee College,Zhangzhou 363105,China;State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China;Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China)

机构地区：[1]厦门大学嘉庚学院环境科学与工程学院,福建漳州363105 [2]厦门大学嘉庚学院河口生态安全与环境健康福建省高校重点实验室,福建漳州363105 [3]华东师范大学河口海岸学国家重点实验室,上海200062 [4]中国科学院烟台海岸带研究所,山东烟台264003

出　　处：《海洋通报》2020年第3期342-350,共9页Marine Science Bulletin

基　　金：科技部基础性工作专项(2014FY210600);国家自然科学基金(41606119);福建省自然科学基金(2017J05068);2016年度福建省高等学校新世纪优秀人才支持计划资助项目(闽教科〔2017〕52号)。

摘　　要：为研究福建省闽江口潮间带大型底栖动物次级生产力的时空变化,于2014年11月—2015年8月对闽江口大型底栖动物进行了4个季度的调查研究。在获得3条断面大型底栖动物物种数、密度和生物量的基础上,利用Brey经验公式计算年平均次级生产力(P)。研究结果显示:闽江口4个季度共获得大型底栖动物63种,其中优势类群为多毛类。闽江口潮间带大型底栖动物年均次级生产力为6.13 g(AFDW)·m^-2·a^-1(AFDW,去灰分干重,ash-free dry weight)。在季节分布上,次级生产力最高值出现在夏季,为11.04 g(AFDW)·m^-2·a^-1,最低值出现在冬季,为2.25 g(AFDW)·m^-2·a^-1;在空间分布上,次级生产力最高值出现在P03断面,为10.23 g(AFDW)·m^-2·a^-1,最低值出现在P01断面,为2.54 g(AFDW)·m^-2·a^-1。大型底栖动物年均P/B值(B=Biomass,生物量)为2.31 a-1,最高值出现在春季,为3.17 a-1,最低值出现在夏季,为1.74 a-1;且P02断面的P/B值高于其他2条断面。Pearson相关分析结果表明,次级生产力与温度呈显著正相关,P/B值与盐度呈显著正相关但与pH呈显著负相关。因此,环境因子在一定程度上影响着该区域大型底栖动物的次级生产力。闽江口大型底栖动物群落组成中以个体小、生活史短、繁殖快的小型甲壳类蜾蠃蜚(Corophium sp).为主,使该潮间带区域的P/B值高于其他临近潮间带区域的调查结果。To explore the temporal-spatial variation of macrofauna secondary production in Minjiang River Estuary,Fujian,four surveys were carried out from November 2014 to August 2015.Based on the Brey experience formula(1990),the annual average biomass(B)and the annual average individual weight(W)were used to assess annual productivity(P).This study identified 63 macrofauna species,in which polychaetes were the dominant species.The mean P was 6.13 g(AFDW)·m^-2·a^-1 with the highest value of 11.04 g(AFDW)·m^-2·a^-1 in summer and the lowest value of 2.25 g(AFDW)·m^-2·a^-1 in winter.According to spatial distribution,the highest P was 10.23 g(AFDW)·m^-2·a^-1 in section P03 and the lowest value was 2.54 g(AFDW)·m^-2·a^-1 in section P01.The average P/B ratio was 2.31 a-1 with the highest value of 3.17 a-1 in spring and the lowest value of 1.74 a-1 in summer.Meanwhile,the P/B ratio in section P03 was clearly higher than other two sections.Pearson correlation analysis observed a significant positive correlation between P and temperature,P/B ratio and salinity and a significant negative correlation between P/B ratio and pH.Moreover,environmental factors modestly affected P of macrofauna.The short life history and fast reproduction of the dominant species Corophium sp.in Minjiang Estuary may explain the higher P/B ratio than other adjacent intertidal zone.

关 键 词：闽江口 大型底栖动物 次级生产力 P/B值 时空变化 

分 类 号：P735[天文地球—海洋生物学] Q958.8[天文地球—海洋科学]