MODELING THE GROWTH OF CYANOBACTERIA (GROWSCUM)

被引：8

作者：

HOWARD, A

KIRKBY, MJ

KNEALE, PE

MCDONALD, AT

机构：

[1] Department of Geography, University of Reading, Reading, RG6 2AB

[2] School of Geography, University of Leeds, Leeds

[3] School of Geography, University of Leeds, Leeds

[4] School of Geography, University of Leeds, Leeds

来源：

HYDROLOGICAL PROCESSES | 1995年 / 9卷 / 07期

关键词：

CYANOBACTERIA; BLUE-GREEN ALGAE; EUTROPHICATION; WATER-BLOOM DYNAMICS; LAKE MODELING;

D O I：

10.1002/hyp.3360090707

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Toxic cyanobacteria have become a common nuisance in freshwater lakes and reservoirs throughout the world. some times resulting in the closure of sites with high amenity value. Cyanobacteria are able to regulate their buoyancy state in response to changing photosynthetic rates. Additionally, the cyanobacteria are liable to become entrained within wind-induced near-surface turbulent currents, resulting in mixing and mass transport. These movement processes have been modelled. A mathematical function is presented which describes light- and nutrient-limited cyanobacterial growth. The growth model is integrated with a previous movement model (SCUM: simulation of cyanobacterial underwater movement) as movement patterns and wind-induced lake mixing strongly affect the intensity and duration of light received by the cyanobacteria and thereby determine the photosynthetic potential. Results of the model suggest that cyanobacteria are resistant to periods of lake mixing and continue to increase their biomass, but at a depressed rate. Growth is most rapid under calm conditions. The results agree well with field-based findings, confirming the validity of the growth function.

引用

页码：809 / 820

页数：12

共 42 条

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