中国海洋大学学报（自然科学版）2024，Vol.54Issue(8)：74-82,9.DOI:10.16441/j.cnki.hdxb.20220302
夏季长江口邻近海域活体底栖有孔虫优势种群及分布特征研究
Study on Dominant Species and Distribution Characteristics of Living Benthic Foraminifera in the Adjacent Sea Area of Yangtze River Estuary in Summer Season
摘要
Abstract
In view of the lack of studies on living benthic foraminifera in the Yangtze River Estuary and its adjacent sea area,in this study,living benthic foraminifera species were identified and analyzed from the surface sediments of 33 stations in the Yangtze River Estuary in July 2016.The results showed that there were 31 species,belonging to 23 genera of living benthic foraminiferas,with abundance ranged from 0 to 21 ind./g and the simple diversity ranged from 0 to 16 specis.Dominant species were Florilus decorus,Nonionella jacksonensis,Cribrononion subincertum,Cancris auriculus,Hanzawaia nipponi-ca,Brizalina striatula,Arenoparella asiatica,Ammonia beccarii vars.and Ammonia compressiuscu-la.The abundance of living foraminifera was higher in the sea areas of A3 and A4 sections,while was lower in the northeast of the study sea area.The coastal area was characterized by"high abundance and less diversity"(except the Yangtze River mouth area),while the offshore area of A3 and A4 sections were characterized by"high abundance and more diversity".The distributions of living foraminiferas showed that Ammonia beccarii vars.was the most widely distributed species,Florilus decorus had the highest proportion and also was the second most widespread species after Ammonia beccarii vars.in study area.The abundance of Cribrononion subcincertum decreased rapidly from nearshore to offshore,indicating this foraminifera is a typical dominant species in nearshore.Results of this study will have significant help to understand the distribution patterns and varation factors of the benthic foraminifera in the Yangtze River estuary.关键词
活体底栖有孔虫/长江口/优势种群/丰度/简单分异度Key words
living benthic foraminifera/Yangtze River Estuary/dominant species/abundance/simple diversity分类
海洋科学引用本文复制引用
张晓洁,肖柳,郭肖伊,南海明,张涵,王飞飞,许博超..夏季长江口邻近海域活体底栖有孔虫优势种群及分布特征研究[J].中国海洋大学学报（自然科学版）,2024,54(8):74-82,9.基金项目
国家自然科学基金重点项目(42130410) （42130410）
国家自然科学基金面上项目(41876075) （41876075）
山东省自然科学基金项目(ZR2023QD035)资助 Supported by the Key Program of the National Natural Science Foundation of China(42130410) （ZR2023QD035）
the National Natural Science Founda-tion of China(41876075) （41876075）
the Shandong Provincial Natural Science Foundation(ZR2023QD035) （ZR2023QD035）
