COMPARISON OF THE SEDIMENTATION OF A DIATOM SPRING BLOOM AND OF A SUBSURFACE CHLOROPHYLL MAXIMUM

被引:11
作者
OLESEN, M
机构
[1] Marine Biological Laboratory, University of Copenhagen, Helsingør
关键词
D O I
10.1007/BF00349464
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
The seasonal pattern of sedimentation was determined over a 8-mo investigation period covering the productive season at a permanent station in the Southern Kattegat (Denmark) in 1990. The phytoplankton succession was characterised by a 4-mo long subsurface maximum associated with the pycnocline which was entirely dominated by the dinoflagellate Gyrodinium aureolum. The bulk sedimentation of organic matter took place during this period and accounted for >60% of the annual particulate organic carbon (POC) and particulate organic nitrogen (PON) sedimentation. The spring bloom period contributed 60% of the sedimentation of intact phytoplankton cells, but only 20% of the POC and PON sedimentation. A minor fraction of the sedimenting matter from the subsurface phytoplankton maximum consisted of intact phytoplankton (<20%), suggesting that the phytoplankton was processed by heterotrophs and that it was mainly products from this activity which contributed to the vertical flux of organic matter. The variation in oxygen concentration below the pycnocline coincided with the pattern of sedimentation with a delay of 3 to 6 wk.
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页码:541 / 547
页数:7
相关论文
共 27 条
[1]  
[Anonymous], 1958, INT VER THEOR ANGEW, DOI [10.1080/05384680.1958.11904091, DOI 10.1080/05384680.1958.11904091]
[2]  
BARTH H, 1989, 10 COMM EUR COMM WAT
[3]  
BIENFANG P, 1983, OCEANOL ACTA, V6, P55
[4]   DECIMETER SCALE HETEROGENEITY IN THE PLANKTON DURING A PYCNOCLINE BLOOM OF GYRODINIUM-AUREOLUM [J].
BJORNSEN, PK ;
NIELSEN, TG .
MARINE ECOLOGY PROGRESS SERIES, 1991, 73 (2-3) :263-267
[5]   DYNAMICS OF A SUBSURFACE PHYTOPLANKTON MAXIMUM IN THE SKAGERRAK [J].
BJORNSEN, PK ;
KAAS, H ;
KAAS, H ;
NIELSEN, TG ;
OLESEN, M ;
RICHARDSON, K .
MARINE ECOLOGY PROGRESS SERIES, 1993, 95 (03) :279-294
[6]   SEDIMENT TRAP BIASES IN TURBULENT FLOWS - RESULTS FROM A LABORATORY FLUME STUDY [J].
BUTMAN, CA .
JOURNAL OF MARINE RESEARCH, 1986, 44 (03) :645-693
[7]  
GARDNER WD, 1980, J MAR RES, V38, P41
[8]  
GARDNER WD, 1983, J MAR RES, V41, P191
[9]  
GRENN EJ, 1967, J MAR RES, V25, P140
[10]   ASSESSMENT OF SEDIMENT TRAP COLLECTION EFFICIENCY [J].
HARGRAVE, BT ;
BURNS, NM .
LIMNOLOGY AND OCEANOGRAPHY, 1979, 24 (06) :1124-1136