Distribution of Intertidal Macrobenthos in 1993 around Hatakejima Island, Central Japan, Compared with 1969 and 1983-84

• Ohgaki Shun-ichi

• Yamanishi Ryohei

  Osaka Museum of Natural History

• Nabeshima Yasunobu

  Osaka Prefectural Fisheries Experimental Station

• Wada Keiji

  Department of Biological Science, Faculty of Science, Nara Women's University

書誌事項

タイトル別名

• Distribution of intertidal macrobenthos

抄録

The intertidal biota of Hatakejima Island in Tanabe Bay, central Japan, was investigated in May, 1993. A survey of selected animal species around the entire coast of the island revealed different patterns of distribution in relation to wave exposure and substratum type. Comparison between the present data and those obtained in 1983 shows that several species obviously extended or contracted their distribution ranges around the island. In the survey of a selected area on the south coast, 173 macro-benthic species including 112 animal and 61 plant species were recorded. Mollusca and Crustacea were dominant among the animals, and Rhodophyta among the plants, in terms of number of species. Comparison between the present data and those obtained in 1969 and 1984 on the south coast reveals that the total number of animal species and their distribution ranges decreased from 1969 to 1984 and increased from 1984 to 1993. The species with a southern geographical distribution (<35°N) contracted and the indicator species of eutrophic water expanded their ranges from 1969 to 1984, and the reverse changes occurred from 1984 to 1993. Photographs show drastic changes in the shore scene: obvious sedimentation in 1984 and alternation of the dominant sessile bivalves between 1969 and 1993. The fluctuation in abundance of the species with a southern geographical distribution paralleled changes in the water temperature, and the fluctuation in abundance of the indicator species of eutrophic water paralleled changes in the indices of nutrient level. An influence of these environmental factors on the faunal changes of the intertidal Hatakejima Island during the last 25 years is inferred.

収録刊行物

• BENTHOS RESEARCH

  BENTHOS RESEARCH 52 (2), 89-102, 1997

  日本ベントス学会

キーワード

• intertidal fauna
• Hatakejima Island
• faunal change
• temperature
• eutrophication

詳細情報

• CRID: 1390001205480258560
• NII論文ID: 130004997513
• NII論文ID: 10002094992
• NII書誌ID: AN10565057
• DOI: 10.5179/benthos1996.52.2_89
• ISSN: 18838901
• ISSN: 02894548
• NDL書誌ID: 4460250
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4460250
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可