----studies by Hargrave and Green estimated natural community grazing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers.
我的疑问：grazing rates 同 feeding rates 有区别吗？我从字典里查的，grazing rates:表示进食率，一般表示主动吃； feeding rates: 表示喂食率，一般表示被动吃；请问大家，我理解的正确吗？谢谢大家确定和补充新的重要理解。 | 
