Seven rarity classes in rocky intertidal algal assemblages along the Northwestern Pacific coast of Japan

• NODA Takashi

  Graduate School of Fisheries Sciences, Hokkaido University

• FUKATSU Yukie

  Graduate School of Fisheries Sciences, Hokkaido University:Graduate School of Agriculture and Life Sciences, The University of Tokyo

• OKUDA Takehiro

  Graduate School of Fisheries Sciences, Hokkaido University

• HORI Masakazu

  Graduate School of Agriculture and Life Sciences, The University of Tokyo

• NAKAOKA Masahiro

  Graduate School of Science and Technology, Chiba University

• YAMAMOTO Tomoko

  Faculty of Fisheries Sciences, Kagoshima University

Bibliographic Information

Other Title

• 日本列島太平洋岸の岩礁潮間帯の海藻群集における7つの希少性
• ニホン レットウ タイヘイヨウガン ノ ガンショウ チョウカンタイ ノ カイソウ グンシュウ ニ オケル 7ツ ノ キショウセイ

Abstract

We applied Rabinowitz's rarity classification scheme to rocky intertidal algae from the Pacific coast of Japan between 31°N and 43°N to: (1) classify species in terms of rarity, (2) determine whether differences exist in taxonomy, functional grouping, and algal body size among rarity categories, and (3) examine the relationship between community properties (algal coverage and species richness) and the number and proportion of rare species. The presence or absence of each algal species and total algal coverage were determined for 1500 quadrats located on 30 rocky shores in May and July 2003. For the 83 eulittoral species found in at least three quadrats, we determined habitat specificity (wave exposure and tidal height), abundance (occurrence in the available habitat), geographic range (latitudinal range), and rarity category. The largest rarity category contained species with "large geographic range, broad habitat specificity, and low local density" and comprised almost half of the species. The second largest rarity category contained common species with "large geographic range, broad habitat specificity, and high local density". We found no differences in species characteristics among the major rarity categories. However, the number and proportion of rare species were positively correlated with algal species richness at the shore level.

Journal

• Japanese Journal of Conservation Ecology

  Japanese Journal of Conservation Ecology 10 (1), 1-10, 2005

  The Ecological Society of Japan

Keywords

• Northwestern Pacific Coast
• Rabinowitz's rarity classification
• rocky intertidal zone
• seaweed

Details

• CRID: 1390001205208160256
• NII Article ID: 110001888698
• NII Book ID: AA11857952
• DOI: 10.18960/hozen.10.1_1
• ISSN: 24241431
• ISSN: 13424327
• NDL BIB ID: 7421186
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7421186
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Allowed