LIVING COCCOLITHOPHORE COMMUNITIES IN THE NORWEGIAN GREENLAND SEA AND THEIR RECORD IN SEDIMENTS

被引：90

作者：

SAMTLEBEN, C

SCHRODER, A

机构：

[1] Geologisch-Paläontologisches Institut, Universität Kiel, D-2300 Kiel

来源：

MARINE MICROPALEONTOLOGY | 1992年 / 19卷 / 04期

关键词：

D O I：

10.1016/0377-8398(92)90037-K

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

Investigation of epipelagic coccolithophore communities along a transect from the Voring Plateau (off Norway) to Scoresbysund (East Greenland) and comparison with coccolith assemblages in underlying surface sediments reveal that sedimentation of coccoliths is dependent on the following factors: (1) Composition of the coccolithophore communities and their bloom phases, (2) grazing and selective destruction by zooplanktonic organisms, (3) type of vertical flux in fecal pellets, and (4) varying carbonate dissolution in different water masses. Dissolution increases towards the boundaries of carbonate sedimentation. As a result, the original composition of the living communities becomes increasingly obscured in the impoverished taphocoenoses. However, differential resistance to dissolution of the two primary calcareous nannoplankton species Emiliana huxleyi and Coccolithus pelagicus is such that occurrence and ratio of the two species in surface sediments reflect the various water masses in the Norwegian-Greenland Sea.

引用

页码：333 / 354

页数：22

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