海州湾有孔虫埋葬群及其与沉积环境的关系

５２个表层沉积样品的定量分析表明，海州湾有孔虫埋葬群由１００多种组成，其中４４种为常见种，优势种有Ａｍｍｏｎｉａ ｂｅｃｃａｒｉｉ，Ｅｌｐｈｉｄｉｕｍ ｍａｇｅｌｌａｎｉｃｕｍ，Ｅｌｐｈｉｄｕｍ ａｄｖｅｎｕｍ及Ｔｅｘｔｕｌａｒｉａ ｆｏｌｉａｃｅａ等，据之可划分出：Ａｍｍｏｎｉａ ｂｅｃｃａｒｉｉ－Ｅｌｐｈｉｄｉｕｍ ｍａｇｅｌｌａｎｉｃｕｍ，Ａｍｍｏｎｉａ ｂｅｃｃａｒｉｉ－Ｅｌｐｈｉｄｉｕｍ

FORAMINIFERAL TAPHOCOENOSE IN HAIZHOU BAY, JIANGSU (CHINA) AND ITS RELATIONSHIP TO SEDIMENTARY ENVIRONMENT

Result based on analysis of 52 surface sediment samples collected from Haizhou Bay shows that the foraminiferal taphocoenose of the studied area consists of over 100 species dominated by Ammonia beccarii, Elphidium magellanicum, Elphidium advenum and Textularia foliacea . Three faunal assemblages ( Ammonia beccarii-Elphidium magellanicum, Ammonia beccarii-Elphidium advenum and Ammonia beccarii-Textularia foliacea ) are identified according to the dominant species. Planktonic forms are absent in the bay area meanwhile some small test size planktonic forms are frequently encountered in the Guanhe River mouth area near the south end of the bay. The spatial distribution of foraminiferal abundance, diversity, faunal composition and assemblages are basically parallel to the coastline and the distribution of water depth, salinity and sediment grain size.