福建九龙江和东屿地区全新世微型硅藻的初步研究
A preliminary study on nanodiatoms from Holocene sediments in the Jiulong River and Dongyu Island of Fujian Province, China
-
摘要: 利用透射电镜研究了九龙江口现代潮间带表层沉积物、九龙江地区中全新世剖面和东屿中-晚全新世剖面的微型硅藻(细胞大小为2～20μm)的组成和丰度.共计硅藻12属26种(包括变种).对每个种的生态分布作了描述,并提供了相应的壳面电镜照片.Thalassionema nitzschioides是九龙江口现代潮间带表层沉积物中的优势种;九龙江中全新世地层的优势种为Navicula climacospheniae,Thalassionema nitzschioides;东屿中-晚全新世地层中,Cyclotella striata,Thalassionema nitzschioides是优势种.微型硅藻在各个样品中所占比例都相对较高,最高可达86.7%,表明微型硅藻在沉积硅藻中占有重要的地位.Abstract: The species composition and cell density of nanodiatoms(cell size smaller than 20 μm) were investigated with TEM for the sedimental samples from different sedimental sections at modern intertidal zones and Middle Holocene in the Jiulong River, and in Dongyu Island in late Middle Holocene and Late Holocene.In total, 26 diatom species (including varieties) belonging to 12 genus of Bacillariophyta were found.The ecological distribution of each species was described to gether with TEM photographs.The dominant species at the modern intertidal zones in the estuary of Jiulong River is Thalassionema nitzschioides, and that in Middle Holocene is Navicula climacospheniae and Thalassionema nitzschioides; in Dongyu Island in late Middle Holocene and Late Holocene the dominant species is Cyclotella striata and Thalassionema nitzschioides.The percentage contribution of nanodiatoms to total diatom assemblages in sedimental sections is relatively high which can be up to 86.7%, showing the importance of nanodiatoms in diatom assemblages in sediments.
-
Key words:
- nanodiatom /
- species /
- TEM /
- Jiulong River
-
CLEVE P T. Examination of diatoms found on the surface of the Sea of Java[J]. Bihang till Kongliga Svenska VentenskapsAkademiens Handlingar, 1873, 1(11):1-15. JOHN R Carter. A taxonomic study of diatoms from standing freshwaters in Shetland[J]. Nova Hedwigia, 1981, 33:772-773. TAKAHASHI M, BIENFANG P K. Size structure of phytoplankton biomass and photosynthesis in subtropical Hawaiian waters[J]. Mar Biol, 1983, 76(2):203-211. WEBER L H, EL-SAYED S Z. Contributions of the net, nano and picoplankton to the phytoplankton standing crop and primary productivity in the Southern Ocean[J]. J Plankton Res, 1987, 9:973-994. 高亚辉,金德祥,程兆第.厦门港微型浮游植物叶绿素的分布与作用[J].海洋与湖沼,1994,25(1):87-93. 程兆第,高亚辉,刘师成.福建沿岸微型硅藻[M].北京:海洋出版社,1993 1-91. EHRENBERG. Die infusionsthierchen als vollkommene organismen[A]. Ein Blick in Das Tiefere Organische Leben der Natur[C]. Leipzig:Leopold Voss, 1837. 171-172. HENDEY N I. Marine diatoms from some West African Ports[J]. J Royal Micro Soc, 1957, 77:28-85. TAKANO H. New and rare diatoms from Japanese marine waters. Ⅷ. Neodelphineis pelagica gen. et sp. nov[J]. Bull Tokai Reg Fish Res Lab, 1982, 106:45-53. 黄成彦,刘师成,程兆第,等.中国湖相化石硅藻图集[Z].北京:海洋出版社,1998.1-164. 金德祥,陈金环,黄凯歌.中国海洋浮游硅藻类[M].上海:上海科学技术出版社,1965.1-230. 金德祥,程兆第,林均民,等.中国海洋底栖硅藻类(上卷)[M].北京:海洋出版社,1982 1-256. 蓝东兆,程兆第,刘师成.南海晚第四纪沉积硅藻[C].北京:海洋出版社,1995.1-103. 朱蕙忠,陈嘉佑.中国西藏硅藻[C].北京:科学出版社,2000.1-353. -
点击查看大图
计量
- 文章访问数: 722
- HTML全文浏览量: 7
- PDF下载量: 1109
- 被引次数: 0
下载:
