With more species of grazers at work, over time, algae were cleared off more efficiently and grazers increased in number, Duffy says.
工作的清道夫种类越多，海藻清除得越有效率，而清道夫也随之增多，Duffy说。
With more species of grazers at work, over time, algae were cleared off more efficiently and grazers increased in number, Duffy says.
工作的清道夫种类越多，海藻清除得越有效率，而清道夫也随之增多，Duffy说。
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