EXAMINATION OF THE SEASCAPE APPROPRIATE FOR SHELLFISH AND CRUSTACEAN METAPOPULATIONS IN THE KEIHIN CANAL OF TOKYO PORT / 東京港京浜運河周辺の浮遊期をもつ貝類・甲殻類に適したシースケープの検討
- Resource Type
- Journal Article
- Authors
- Hiroshi KUROIWA; Takeshi SANADA; Tatsuya MASUDA; Tomonari OKADA; Yoshihiro B. AKIYAMA; 増田 龍哉; 岡田 知也; 眞田 武; 秋山 吉寛; 黒岩 寛
- Source
- 土木学会論文集B2(海岸工学) / Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering). 2017, 73(2)1381
- Subject
- habitat network
metapopulation viability
passive transport
seascape design
- Language
- Japanese
- ISSN
- 1883-8944
1884-2399
The spatial distributions of benthic habitats (seascape) in the Keihin Canal of Tokyo Port were quantitatively assessed on the basis of the metapopulation viability of benthos using a newly proposed habitat assessment model. Spatial distributions of the bottom and side substrata of the canal were examined and quantitatively assessed for their appropriateness as habitats for benthos. The spatial distributions of substrata varied among the substratum types. Data on the metapopulation growth rate (λmax) revealed that these substratum distributions were more appropriate for an attached bivalve. Information regarding metapopulation viability on the present seascape and seascape designs that enhance metapopulation viability were obtained. The magnitude of the change in metapopulation viability and the period until the population reached saturation upon a change in the habitat area or the proximity index of habitat patches were quantitatively estimated.