Functional analysis of food web of pelagic plankton communities

中上层浮游生物群落食物网的功能分析

• 批准号: 14540576
• 负责人: TAKAHASHI Masayuki
• 金额: $ 1.98万
• 依托单位: Kochi University (2004)The University of Tokyo (2002-2003)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14540576/
• 关键词: plankton community; ocean; food web; model analysis; food chain; productivity; biomass; ecological efficiency

Current understanding of structure and function of ecosystem analyzed by use of information on dominant species is needed for its evaluation of validity by use of information of entire species in a given ecosystem.The present research was then conducted in pelagic plankton ecosystems in tropical, sub-tropical and sub-arctic regions where necessary data sampling on species, biomass and trophic relations is probably easier than the other types of ecosystems because of excellent homogeneity in rather small scale in aquatic ecosystem. Then data on species and biomass of plankton in each community were challenged to entirely collected, and constructed the food web structure. Data were synthesized either in epi-pelagic community having both autotrophic and heterotrophic processes or middle and deep depths having only heterotrophic processes.Based upon information on species and its biomass collected in tropical, subtropical and subarctic epi-pelagic plankton ecosystems, all species and its biomass were grouped in different compartments based upon individual size differences in each functional group for each taxonomic group. Food web was then constructed according to the ecological role of "the smaller size organisms are always eaten by the larger size organisms". This type of food web structure has been originally proposed in this study, and has shown that plankton community is functioning by species, individual size, biomass and food chain relationship which is not shown in the current analysis based upon dominant species.Middle and deep depth communities in the ocean lack primary producer and is solely controlled by heterotrophic processes, which have been synthesized in the form of species, sizes and each biomass, but its food web analysis has been postponed in the future.

目前对利用优势物种信息分析的生态系统的结构和功能的理解，需要利用给定生态系统中整个物种的信息来评估其有效性。然后，本研究在热带、亚热带和亚北极地区的中上层浮游生物生态系统中进行，这些生态系统在物种、生物量和营养关系方面的必要数据采样可能比其他类型的生态系统更容易，因为它们具有良好的数据采集能力。 水生生态系统在相当小范围内的同质性。然后挑战完整收集每个群落中浮游生物的物种和生物量数据，并构建食物网结构。综合了具有自养和异养过程的表层群落或仅具有异养过程的中层和深层群落的数据。根据在热带、亚热带和亚北极表层浮游生物生态系统中收集的物种及其生物量信息，根据每个功能组的个体大小差异将所有物种及其生物量分组在不同的区划中 每个分类组。然后根据“较小尺寸的生物总是被较大尺寸的生物吃掉”的生态作用构建了食物网。这种类型的食物网结构是本研究最初提出的，并表明浮游生物群落是通过物种、个体大小、生物量和食物链关系来发挥作用的，这在目前基于优势物种的分析中没有显示出来。海洋中深层群落缺乏初级生产者，仅受异养过程控制，已以物种、大小和生物量的形式综合起来，但其食物网分析已被推迟 将来。

项目成果

Ocean fertilization using deep ocean water (DOW)

利用海洋深层水进行海洋施肥 (DOW)

• 发表时间: 2003
• 期刊: Deep Ocean Water Research 4
• 作者: Takahashi;M.M. 他1名
• 通讯作者: M.M. 他1名

Fertilization effects of deep ocean water on phytoplankton community in subtropical surface water.

海洋深层水对亚热带表层水浮游植物群落的施肥效应。

• 发表时间: 2003
• 期刊: Deep Ocean Rat.Res. (In Japanese with English summary) 4
• 作者: Ikeya;T.;K.Kawanobe;M.M.Takahahsi
• 通讯作者: M.M.Takahahsi

Han Dong-Hoon: "Netplankton chlorophyll biomass along 175oE in the Pacific Ocean"Journal of Oceanography. 60(印刷中). (2004)

Han Dong-Hoon：“太平洋沿 175oE 的净浮游生物叶绿素生物量”海洋学杂志 60（出版中）。

Netplankton chlorophyll biomass along 175oE in the Pacific Ocean

太平洋沿 175oE 的净浮游生物叶绿素生物量

• 发表时间: 2004
• 期刊: Journal of Oceanography 60
• 作者: Han;D-H. 他2名
• 通讯作者: D-H. 他2名

Characteristics of sea ice ecosystem and its importance for maintaining the earth environment (In Japanese)

海冰生态系统的特征及其对维持地球环境的重要性（日语）

• 发表时间: 2002
• 作者: Takahahashi;M.;K.Shirasawa (eds.)
• 通讯作者: K.Shirasawa (eds.)