滨州浅海大型底栖动物次级生产力研究

Study on the Secondary Productivity of Macrozoobenthos in Binzhou Shallow Sea Waters

根据2012年春季、夏季和秋季对山东省滨州浅海大型底栖动物18个站位3航次调查结果,利用Brey的经验公式对大型底栖动物的次级生产力和P/B值进行了研究计算。结果表明:该海域大型底栖动物的次级生产力在0.002~65.000g(AFDW)·m^(-2)·a^(-1)之间,均值为6.210g(AFDW)·m^(-2)·a^(-1);其去灰干重生物量为0.001~43.680g(AFDW)·m^(-2),均值为3.980g(AFDW)·m^(-2);两者均以秋季最高,春季次之,夏季最低。该海域P/B值相对较高,均值为1.80a^(-1),以夏季最高,其次是春季,秋季最低。该海域个体较小、生活史较短的种类在底栖动物群落组成中占据优势;每年大型底栖动物次级生产力总量(湿重)约为6.9万吨。

According to the results of macrozoobenthos in Binzhou shallow sea waters,with 3times survey 18 stance being made in the Spring,Summer and Autumn,2012,the secondary productivity and P/B value of macrozoobenthos were calculated by using Brey formula.The results showed that the secondary productivity of macrozoobenthos in Binzhou shallow sea water was 0.002~65.00g(AFDW)·m^(-2)·a^(-1),the average was 6.21g(AFDW)·m^(-2)·a^(-1),and its dry weight of biomass was 0.001~43.68g(AFDW)·m^(-2),the average was 3.98g(AFDW)·m^(-2).Both of them were the highest in Autumn,then in Spring,and it was the lowest in Summer.The P/B value was higher,the average was 1.80a^(-1),and it was the highest in Summer,then in Spring,and it was the lowest in Autumn.The small individual of short life history species had the advantage in the benthic animal community composition in this area,and the secondary productivity(wet weight)of large benthic animal was about 69000 tons every year.