Community Structure of the Macrobenthos around the Ishikari Bay New Port in Hokkaido, Japan

• SAKURAI Izumi

  Hokkaido Central Fisheries Experimental Station

• YAMASHITA Toshihiko

  Graduate School of Engineering, Hokkaido University

• NAKAO Shigeru

  Faculty of Fisheries, Hokkaido University

Bibliographic Information

Other Title

• 北海道石狩湾新港周辺におけるマクロベントスの群集構造
• ホッカイドウ イシカリワン シンコウ シュウヘン ニ オケル マクロベントス ノ グンシュウ コウゾウ

Abstract

A macrobenthic survey was conducted around the Ishikari Bay New Port in west Hokkaido, Japan, to describe the community structure of macrobenthos associated with sedimentary conditions. A total of 70 species were collected at 29 stations using a Smith-Mcintyre grab sampler in September 1998. Dominant species were three juvenile bivalves (Mactra chinensis, Psendocardium sachalinensis, Megangulus uenulosos), six polychaetes (Goniada maculata, Spiophanes bombyx, Spio filicornis, Nephtys caeca, Magelona japonica, Glycera capitata), two echinodems (Scaphechinus griseus, Echinocardium cordatum), and four amphipods (Phoxocephalidae sp., Ampelisca brevicornis, Urothoe grimaldii, Corophium sp.). Distribution pattems of the dominant species changed with feeding type, depth and sediment particle size. Suspension feeders occurred at 2-17m depth in well-sorted mediate to fine sand. Deposit feeders occurred at 17-23m depth in well-sorted fine to very fine sand. Carnivores occurred at 7-17m depth in well-sorted mediate to fine sand and at the mouth of Ishikari River in unsorted fine to very fine sand. Tube-building deposit feeders occurred at the port in unsorted fine to very fine sand. Facultative deposit feeders occurred throughout the whole survey area, except at the river mouth. At 2-17m depth, suspension-feeding bivalves, which have a planktonic larval period of 2-4 weeks, occurred densely on the northeast side of the port, and suspension-feeding amphipods which undergo direct development, were the dominant species on the southwest side of the port. It was suggested that macrobenthic communities around this port are strongly affected by hydrodynamic conditions, which influence the food supply to the animals and their recruitment.

Journal

• Journal of Fisheries Engineering

  Journal of Fisheries Engineering 37 (2), 143-149, 2000

  The Japanese Society of Fisheries Engineering

Keywords

• The Ishikari Bay New Port
• Coastal structure
• Macrobenthos
• Community
• Particle size composition

Details

• CRID: 1390845712966868992
• NII Article ID: 10009259747
• NII Article ID: 10008273871
• NII Book ID: AN10278554
• DOI: 10.18903/fisheng.37.2_143
• ISSN: 21897131
• ISSN: 09167617
• NDL BIB ID: 5611932
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030661193
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5611932
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed