CALCULATING CARBON BIOMASS OF PHAEOCYSTIS SP FROM MICROSCOPIC OBSERVATIONS

被引:166
作者
ROUSSEAU, V
MATHOT, S
LANCELOT, C
机构
[1] Groupe de Microbiologie des Milieux Aquatiques, Campus de la Plaine, Bruxelles, B-1050, Boulevard du Triomphe
关键词
D O I
10.1007/BF01319830
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Conversion factors for calculating carbon biomass of Phaeocystis sp. colonies and free-living cells were determined from microscopic observations and chemical analysis conducted on cultured and natural Phaeocystis sp. populations originating from the Southern Bight of the North Sea in 1986 and 1987. They allow calculation, in terms of carbon biomass, of the different forms of Phaeocystis sp. that succeed each other when the population is growing, on the basis of microscopic observations. The latter include enumerations of free-living cells (flagellated and non-motile) and colonies, as well as colonial biovolume measurement. Specific application to natural populations from Dutch coastal waters during spring 1986 shows that more than 90% of Phaeocystis sp. carbon biomass is under colonial form, most of it exceeding the grazing characteristics of current zooplankton at this period of the year. Detailed analysis of seasonal changes shows in addition that the size of the colonies greatly increases during the course of Phaeocystis sp. flowering, reaching sizes as high as 1 mm diameter at the top of the bloom when nutrients are depleted. Physiologically this corresponds to an enhanced synthesis of mucilaginous substances, with the decrease of available nutrients leading to an increasing contribution of the matrix to the total colonial carbon during the course of the bloom. Carbon content of Phaeocystis sp. colonies therefore greatly varies with their size, ranging from 0.3 to 1430 ngC colony-1. © 1990 Springer-Verlag.
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页码:305 / 314
页数:10
相关论文
共 34 条
[11]   INVESTIGATIONS ON THE PLANKTON COMMUNITY OF BALSFJORDEN, NORTHERN NORWAY - THE PHYTOPLANKTON 1976-1978 - ENVIRONMENTAL-FACTORS, DYNAMICS OF GROWTH, AND PRIMARY PRODUCTION [J].
EILERTSEN, HC ;
TAASEN, JP .
SARSIA, 1984, 69 (01) :1-15
[12]   PHYTOPLANKTON STANDING CROP, PRIMARY PRODUCTIVITY, AND NEAR-SURFACE NITROGENOUS NUTRIENT FIELDS IN THE ROSS SEA, ANTARCTICA [J].
ELSAYED, SZ ;
BIGGS, DC ;
HOLMHANSEN, O .
DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1983, 30 (08) :871-886
[13]  
GIESKES W W C, 1975, Netherlands Journal of Sea Research, V9, P166, DOI 10.1016/0077-7579(75)90014-9
[14]   GROWTH AND PRODUCTION OF EXTRACELLULAR SUBSTANCES BY 2 STRAINS OF PHAEOCYSTIS-POUCHETI [J].
GUILLARD, RR ;
HELLEBUS.JA .
JOURNAL OF PHYCOLOGY, 1971, 7 (04) :330-&
[15]   USE OF NUCLEPORE FILTERS FOR COUNTING BACTERIA BY FLUORESCENCE MICROSCOPY [J].
HOBBIE, JE ;
DALEY, RJ ;
JASPER, S .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1977, 33 (05) :1225-1228
[16]   EFFECTS OF TIDAL CURRENTS ON CHLOROPHYLL A CONTENT OF SANDY SEDIMENTS IN THE SOUTHERN NORTH-SEA [J].
JENNESS, MI ;
DUINEVELD, GCA .
MARINE ECOLOGY PROGRESS SERIES, 1985, 21 (03) :283-287
[17]  
JONES P. G. W., 1963, JOUR CONS, V28, P8
[18]  
KASHKIN N. I., 1963, OKEANOLOGIYA, V3, P697
[19]  
Kornmann P., 1955, HELGOLANDER WISS MEE, V5, P218, DOI 10.1007/BF01610509
[20]  
LANCELOT C, 1987, AMBIO, V16, P38