Effects of low light intensity on the submerged plant-filamentous algae symbiotic system
Filamentous algae commonly thrive in grass-type clear-water waterbodies,which are dominated by submerged plants.This not only affects the aesthetic value of the ecosystem,but can also lead to its collapse in severe cases.Light intensity is a crucial factor that can significantly affect the growth and reproduction of filamentous algae and submerged plants.To investigate their proliferation at different low light intensities,this study constructed a submerged plant-filamentous algae symbiosis systems under low light intensity conditions.Results indicated that,under low light intensity conditions,with the increase of light intensity,filamentous algae biomass increased rapidly,while submerged plant biomass increased slowly.Nevertheless,submerged plants were able to maintain normal physiological activities.At light intensities of 12 790 lx at the water surface and 1 013 lx at the bottom,filamentous algae biomass was suppressed at a low level,while submerged plants continued to grow well.This could be effectively implemented to curb the excessive proliferation of filamentous algae in grass-type clear-water waterbodies.
万方数据
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