Elucidation of current status and the mechanism on changes in coastal ecosytems off Fukushima after the 2011 Tohoku earthquake and tsunami and the nuclear disaster
-
- Horiguchi Toshihiro
- Principal Investigator
- 国立研究開発法人国立環境研究所
-
- 久米 元
- Co-Investigator
- 鹿児島大学
-
- 姜 益俊
- Co-Investigator
- 九州大学
-
- 遠藤 一佳
- Co-Investigator
- 東京大学
-
- 児玉 圭太
- Co-Investigator
- 国立研究開発法人国立環境研究所
About this project
- Japan Grant Number
- JP18H03962
- Funding Program
- Grants-in-Aid for Scientific Research
- Funding organization
- Japan Society for the Promotion of Science
- Project/Area Number
- 18H03962
- Research Category
- Grant-in-Aid for Scientific Research (A)
- Allocation Type
-
- Single-year Grants
- Review Section / Research Field
-
- Medium-sized Section 40:Forestry and forest products science, applied aquatic science, and related fields
- Research Institution
-
- National Institute for Environmental Studies
- Project Period (FY)
- 2018-04-01 〜 2022-03-31
- Project Status
- Completed
- Budget Amount*help
- 44,200,000 Yen (Direct Cost: 34,000,000 Yen Indirect Cost: 10,200,000 Yen)
Research Abstract
We investigated population densities and spawning characteristics in the rock shell, as well as species richness and population densities in intertidal invertebrates at sites in Ibaraki, Fukushima and Miyagi Prefectures, including sites near Fukushima Daiichi Nuclear Power Plant (FDNPP). We also examined the gonads of the rock shell specimens collected at sites near FDNPP (Okuma and Tomioka) and at a reference site,120 km south of FDNPP (Hiraiso), histologically to evaluate their reproductive cycle and sexual maturation. The gonads of the rock shells collected at Okuma,1 km south of FDNPP, exhibited consecutive sexual maturation, whereas sexual maturation of the gonads of specimens collected at Hiraiso was observed only in summer. Results on fisheries-independent bottom-trawl and larval surveys in the coastal water off Fukushima revealed total megabenthic population densities had shown a decreasing tendency and that no or few larvae of Penaeoidea were collected at all sites.
Details 詳細情報について
-
- CRID
- 1040282256970930304
-
- Text Lang
- ja
-
- Data Source
-
- KAKEN