“水生生态系统食物链”的概念、定义、翻译、参考文献-科学参考

单词	水生生态系统食物链
释义	水生生态系统食物链 Encyclopedia 农学食物链释 food chain of aquatic ecosystem水生生态系统食物链在水生生态系统中，从植物、细菌和有机物开始，物质和能量通过摄食与被摄食在各营养级的水生生物间依次传递所形成的链状营养关系。当能量在食物链传递时，每经过一个营养级就有一部分能量会损失掉。因此，食物链不可能无限加长，水生生态系统食物链的营养级通常只有4～5级。
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