Wetland macrophyte diversity, trophic status and phytoplankton:a case study of the cascading effects of an invasive herbivore

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Abstract

Shallow water bodies can exist in alternative stable states,a clear water state with high coverage of maerophytes or a turbid state with high phytoplankton biomass.The alternative equilibria hypothesis has been proposed to explain the occurrence of the alternative stable states (Scheffer et al.,1993)^[1],which assumes that:1),turbidity increases with the nutrient level; 2),macrophyte reduces turbidity; and 3),macrophyte disappears when a critical turbidity is exceeded.At low nutrient levels,the water should be clear,with low phytoplanlaon biomass and extensive macrophyte coverage.At high nutrient levels,the water should be turbid,with high phytoplankton biomass and a lack of macrophytes.

Received: 25 October 2008

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QIU Jian-Wen. Wetland macrophyte diversity, trophic status and phytoplankton:a case study of the cascading effects of an invasive herbivore[J]. , 2008, 27(5): 310-314.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2008/V27/I5/310

[1]	. [J]. Ecological Science, 2022, 41(2): 1-.