シロウリガイに共産する現生および化石底生有孔虫群集 (I) : 初島沖現生シロウリガイ群集における底生有孔虫の鉛直分布

概要

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This report discusses the relationship between benthic foraminiferal species and the chemical character of the bottom and interstitial waters in the habitat of the Calyptogena community (139°13.6'E, 34°59.9'N, 1160m in water depth) off Hatsushima Island of Sagami Bay. Thirty one sediment samples, which were reported the chemical characters of the interstitial water by Masuzawa et al. (1992), are used for this benthic foraminiferal analysis. Four species such as Bulimina aculeata, Bulimina striata, Cibicidoides mediocris and Rutherfordoides cornuta abundantly occur in those samples. Distribution patterns of these four species are dipcited through the Q-mode factor anaysis. Those of B. striata and R. cornuta are closely related with the metane contents of the bottom water. B. striata is considred to be tolelant of high hydrogen sulfide conditions.
日本古生物学会の論文
1996-06-30