近岸典型生态系统大型底栖动物的次级生产力——以瓯江口、洞头列岛为例  

Secondary productivity of macrobenthos in typical coastal ecosystems: Oujiang River estuary and Dongtou Islands as examples

作　　者：贾胜华[1,2] 廖一波[1,2] 曾江宁[1,2] 寿鹿[1,2] 黄伟 高爱根[1,2] 汤雁滨[1,2] 

机构地区：[1]国家海洋局海洋生态系统与生物地球化学重点实验室,杭州310012 [2]国家海洋局第二海洋研究所,杭州310012

出　　处：《生态学报》2017年第21期7140-7151,共12页Acta Ecologica Sinica

基　　金：海洋公益性行业科研专项(201405007;201505004-3;201505027-4);国家海洋局第二海洋研究所基本科研业务费专项(JG1311;JG1312;JG1412;JG1616);浙江省自然科学基金(LY14D060007);国家科技支撑计划(2015BAD08B01)

摘　　要：为更好了解和估算河口及岛屿生态系统大型底栖动物次级生产力的情况,以近岸两个典型生态系统河口-瓯江口、岛屿-洞头列岛为例,于2015年4月和10月在该海域进行大型底栖动物调查,采用3种Brey经验模型对大型底栖动物次级生产力进行估算,并分析次级生产力与环境因子的关系。结果表明:(1)以去灰干重(ash-free dry weight,AFDW)计,Brey经验公式估算瓯江口和洞头列岛海域年均次级生产力分别为0.48 g(AFDW)m^(-2)a^(-1)和0.70 g(AFDW)m^(-2)a^(-1),Brey模型估算瓯江口和洞头列岛海域年均次级生产力分别为0.51 g(AFDW)m^(-2)a^(-1)和1.55 g(AFDW)m^(-2)a^(-1),Brey模型估算瓯江口和洞头列岛海域年均次级生产力分别为0.25 g(AFDW)m^(-2)a^(-1)和0.99 g(AFDW)m^(-2)a^(-1)。(2)3种经验模型反映大型底栖动物年均次级生产力空间分布趋势一致:瓯江口海域有1高值区,位于瓯江口南部;洞头列岛海域有2高值区,分别位于洞头本岛东北部的三盘岛与花岗岛之间和东黄岛东南部的岛屿之间。(3)瓯江口海域大型底栖动物年均次级生产力主要贡献种为双鳃内卷齿蚕Aglaophamus dibranchis、长吻沙蚕Glycera chirori、异蚓虫Heteromastus filiforms、焦河篮蛤Potamocorbula ustulata、薄云母蛤Yoldia similis、圆筒原盒螺Eocylichna braunsi,它们对次级生产力的贡献率超54.2%;洞头列岛海域大型底栖动物年均次级生产力主要贡献种为双鳃内卷齿蚕、异蚓虫、薄云母蛤、绒毛细足蟹Raphidopus ciliatus、隆线强蟹Eucrate crenata、脑纽虫Cerebratulina sp.、红狼牙鰕虎鱼Odontamblyopus rubicundus,它们对次级生产力的贡献率超57.1%。(4)次级生产力与环境因子的相关性分析显示化学需氧量、悬浮物和表层沉积物中值粒径是影响瓯江口海域大型底栖动物年均次级生产力的重要环境因子,而环境因子与洞头列岛海域大型底栖动物年均次级生产力相关关系不显著。(5)瓯江口海域Brey�To better understand and estimate the secondary productivity of macrobenthos in estuary ecosystems and island ecosystems, we conducted investigations on the macrobenthos in two typical coastal ecosystems, Oujiang River estuary and Dongtou Islands, in the Eastern China sea, in April and October 2015. In Oujiang River estuary, 81 species were found, including 39 polychaete species, 23 crustacean species, 9 mollusk species, 4 echinodermata species, and 6 other species. In Dongtou Islands, 111 species were found, including 50 polychaete species, 30 crustacean species, 18 mollusk species, 5 echinodermata species, and 8 other species. Three different empirical formulas were applied to calculate the secondary productivity of these macrobenthos. The relationships between the secondary productivity and environmental factors were also analyzed. The results showed that： （1） The average annual secondary productivity of macrobenthos, measured as ash-free dry weight and calculated using three empirical formulas, i.e., Brey＇s empirical formula （1990） and Brey＇s empirical models （2001 and 2012）, were 0.48, 0.51, and 0.25 g m^-2 a^-1, respectively, in the Oujiang River estuary and 0.70, 1.55, and 0.99 g m^-2 a^-1, respectively, in the Dongtou Islands. （2） The spatial distribution of the average annual secondary productivity estimated by the three empirical formulas was consistent. A zone with high average annual secondary productivity of macrobenthos was found in the southern waters of the Oujiang River estuary. Two such zones were found in the Dongtou Islands, one located in the sea area between Sanpan Island and Huagang Island, northeast of the main island of Dongtou, and the other in the sea area between the islands southeast of the Donghuang Island. （3） Six species, Aglaophamus dibranchis, Glycera chirori, Heteromastus filiformis, Potamocorbula ustulata, Yoldia similis, and Eocylichna braunsi, mainly contributed-more than 54.2% of the total-to the average annual secondary productivity of macrobenthos

关 键 词：次级生产力 大型底栖动物 洞头列岛 瓯江口 Brey经验模型 

分 类 号：Q958.8[生物学—动物学]