植生の異なる実験藻場における生物群集の決定要因

DOI 日本農学文献記事索引 Web Site 被引用文献4件 参考文献23件

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  • Determine Factors of Community Organization in Some Artifitial Saｒgaｒssum Beds with Different Vegetation
  • ショクセイ ノ コトナル ジッケン モバ ニ オケル セイブツ グンシュウ ノ ケッテイ ヨウイン

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Animal and plant communities in Saｒgassum beds were compared among some areas with different vegetation to analyze environmental conditions, which may determine compositions of communities. Study areas were natural Sargassttm vegetation area and some artificial Sargassttm beds on the concrete blocks ; poly-species area which was disturbed partly, S. giganteifolinm area on which all macrophytes except for S. giganteifolium were removed and barren area on which all organisms were removed. These areas were useful to study the influences of macrophyte on community structure in Sargassum beds. In the phytal animal communities, arthropoda especially gammaridea and caprellidea were dominant, and bivalves in animal communities on the bottoms. Biomass of phytal animals seemed to be related to size, density and species diversity of macrophyte. Then it was thought that habitat complexity and biomass of microphyte as food were very important for phytal animals. On the bottoms, animal densities were probably determined by the area of bared bottom suited for settlement. We could further compare among some Sargassum beds in different phases of succession. It enables to study community succession in Sargassum beds.

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