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Basic study for development of floating fish bank, which have a mitigation function, focusing shell attached organic matter of raft oyster culture

开发具有减缓功能的浮式鱼库的基础研究，重点关注筏式牡蛎养殖的壳附着有机物

基本信息

批准号：
15310067
负责人：
MISHIMA Yasufumi
金额：
$ 7.23万
依托单位：
National Institute of Advanced Industrial Science and Technology, Biomass Technology Research Center
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

项目摘要

We focused to oyster shell attached organic matter of the raft oyster culture in Hiroshima Bay, in order to develop the floating fish bank, which have the functions of mitigation in the enclosed coastal area.We determined and analyzed the primary production and biological composition of oyster shell attached organic matter (SAOM) and shell attached fauna (SAF) and chemical and biological compositions of SAOM on the raft oyster culture in Hiroshima Bay, in order to clarify the role of the material cycle. Moreover, We rafted the "oyster shell case", which is the patent of Kaiyo Kensetu, and determined and analyzed the same way of the raft oyster culture. We estimate the functions of the floating fish bank, and the mitigation.The annual standing stock of micro algae, organic carbon, total nitrogen, and chlorophyll a of SAOM, and SAF was 13.9X105cells/oyster 75.8mgC/oyster 11.1mgN/oyster 1.39mgP/oyster, 0.087mgChla/oyster, 368ind/oyster for density, 20.9g/oyster for biomass. These values w … More ere very huge compared with the water column of seawater. By the primary production and biological consumption of SAOM and SAF, the surface of oyster shell was important for the organic matter decomposition. The amount of total consumption of organic carbon was estimated 40.9mgC/oyster. The standing stock of SAF was estimated about 18,000 ton, and the production will became 35,000-53,000ton/y in Hiroshima Bay. The annual corresponds to the biomass, which can support about 18-27 % of fishery production in the Hiroshima Bay.By the rafting experiments of the "oyster shell case", The annual standing stock of micro algae of SAOM, and SAF was 145X106)cells/Shell-case,7,900 inds/Shell-case for density, 1,040 g/Shell-case for biomass. By the primary production and biological consumption of SAOM and SAF, the oyster shell case can decompose organic matter 1,420mgC/Shell-case/day. By the case study of the floating fish bank using the "oyster shell case" (20m length, 10m width, 10m depth, total 2000 oyster shell case), which is the same size of the raft oyster culture in Hiroshima Bay, they can decomposed 2.9kgC/day/raft. The annual corresponds to the biomass, which can support about 400 to 600 kg fishery production Less

本研究以广岛湾牡蛎筏养殖场的附壳有机质为研究对象，旨在开发具有缓解功能的近海漂浮鱼塘。对广岛湾筏式养殖场牡蛎附壳有机质(SAOM)和附壳动物(SAF)的初级生产量和生物组成以及SAOM的化学和生物组成进行了测定和分析，以阐明物质循环的作用。此外，我们还对Kaiyo Kensetu的专利--牡蛎壳案例进行了木筏，并对同样的木筏牡蛎养殖方式进行了测定和分析。SAOM和SAF的微藻、有机碳、总氮和叶绿素a年蓄积量分别为13.9×105个/生蚝75.8mgC/生蚝11.1mgN/生蚝1.39mgP/生蚝、0.087mgChla/生蚝、368ind/生蚝、20.9g/生物质。这些值与…与海水的水柱相比，更是非常巨大。由于SAOM和SAF的初级生产和生物消耗，牡蛎壳表面对有机物的分解起着重要的作用。有机碳的总消耗量估计为40.9mgC/只牡蛎。据估计，广岛湾SAF的现存量约为1.8万吨，产量将达到3.5万-5.3万吨/年。根据“牡蛎壳箱”的漂流实验，SAOM和SAF的年浮游量分别为145×106个/壳箱、7,900个/壳箱、1,040克/壳箱。通过SAOM和SAF的初级生产和生物消费，牡蛎壳可分解有机物1420mgC/壳·箱/天。以浮游鱼塘为例，采用与广岛湾牡蛎养殖相同大小的“牡蛎壳”(长20m、宽10m、深10m，共2000个牡蛎壳)，可分解2.9kgC/天/筏。年对应的生物量，可支持渔业减产约400至600公斤