微藻间竞争机制研究进展

Research Progress of Competitive Mechanisms Among Microalgae

文章综述了微藻间竞争机制的种类、特点及影响因素。藻对资源利用能力的差异及利用域的可变性是其资源性竞争的主要机制,两者与溶解性无机碳(DIC)、二氧化碳浓度、光照、水体pH值、水体扰动等因素有关。微藻干扰性竞争机制主要是通过分泌化感物质实现,其性质包括双向性、易变性。间接性竞争机制则是微藻利用自身生理特性及外部环境因子间接改变藻间竞争,其中外部环境因子包括人为投放牧食者等生物因子,光照因素、营养因素、环境pH值因素等非生物因子。藻间竞争时上述3种竞争机制可同时存在,具有多元复合特点。最后,探讨了该领域研究中存在的问题,以期为今后利用藻间竞争机制治理水环境提供参考建议。

This paper reviews the types, characteristics and influential factors of competition mechanisms among microalgae Resource utilization ability differences and domain both of which are related with dissolved inorganic water and water disturbance. Algal interference allelopathic substances released by microalgae variability of algae are the main modes of action of resource competition, carbon （DIC）, carbon dioxide concentration, illumination,pH value of competition with bidirectional and mutable properties is realized by Then indirect competition is defined as the process in which algal physiological characteristics and external environmental factors are involved in changing competition relationship among microalgae. External environmental factors consist of biotic （e.g. predator from artificial release） and non-biotic factors （e.g. illumination, nutrition,pH value ）. Competition among microalgae has multivariable characteristics and all three mechanisms modes of action mentioned above can simultaneously participate in it. Finally the existing problems in this field are discussed to provide advice for further research and application development using microalgal competitive mechanisms for water environment treatment.