光照与浮游动物耦合作用对浮游植物群落的影响——以小兴凯湖为例
Interaction of Light and Zooplankton on Phytoplankton Community:Taking the Xiaoxingkai Lake as An Example
董向前 1袁宇翔 2路永正 2武海涛 2侯璐 3蔡羽曼 3朱晓艳3
作者信息
- 1. 吉林建筑大学,松辽流域水环境教育部重点实验室,吉林长春 130118;中国科学院湿地生态与环境重点实验室,中国科学院东北地理与农业生态研究所,吉林长春 130102
- 2. 中国科学院湿地生态与环境重点实验室,中国科学院东北地理与农业生态研究所,吉林长春 130102
- 3. 吉林建筑大学,松辽流域水环境教育部重点实验室,吉林长春 130118
- 折叠
摘要
光照是浮游植物光合作用必需的能源,浮游动物是浮游植物的重要捕食者,二者直接影响浮游植物的生长,然而光照与捕食胁迫耦合作用下浮游植物群落结构的响应特征仍不清楚.2022年8月中旬,采集小兴凯湖原位水样,通过室内培养实验,模拟研究了光照变化和浮游动物捕食胁迫下浮游植物群落组成与生长的响应特征.结果表明,浮游植物丰度与光照强度存在线性关系,而且浮游植物丰度对光照强度变化的响应存在一定的滞后性.浮游动物的存在降低了浮游植物群落的生物多样性,但增加了水华藻类铜绿微囊藻(Microcystis aeruginosa)的竞争优势.本研究结果有助于深入了解湖泊生态系统中浮游植物对环境变化的响应机制,为全面推进兴凯湖水华防治与可持续管理提供科学依据.
Abstract
Light is an essential energy source for phytoplankton photosynthesis,and zooplankton are important predators of phytoplankton,both of which directly affect phytoplankton growth and community structure.However,the response characteristics of phytoplankton community structure to the interaction of light and predation stress are still unclear.In mid-August 2022,we collected water samples from the Xiaoxingkai Lake to conduct a simulated research on the response characteristics of phytoplankton community composition and growth to changing light intensity and zooplankton predation stress through indoor culture experiments.The results showed that phytoplankton abundance had a linear relationship with light intensity,and there was a time lag in the response of phytoplankton abundance to light intensity changes.The presence of zooplankton reduced the biodiversity of phytoplankton communities,but increased the competitive advantage of the bloom algae Microcystis aeruginosa.Our study aids in deeply understanding the response mechanism of phytoplankton to environmental changes in lake ecosystem,and provides scientific basis for promoting the prevention of algae bloom and sustainable management in the Xingkai Lake.
关键词
光照/浮游动物/浮游植物/水华Key words
light/zooplankton/phytoplankton/algae bloom引用本文复制引用
基金项目
国家重点研发计划(2022YFF1300900)
国家自然科学基金(42101071)
黑土地保护与利用科技创新工程专项(XDA28100103)
中国科学院东北地理与农业生态研究所青年科学家小组项目(2022QNXZ01)
出版年
2024
NETL
NSTL
万方数据