不是相反,而是和前文的observation一致的,因为都是在说algae多,grazers就少,grazers多了,algae就多了,所以和前文的现象应该是一致的。所以两种现象支持了Hardy这个人得出了一个结论。都属于negative correlation
Hardy的理论是什么?
Animal exclusion
谁被exclude了?导致这个结果的原因是什么?
Grazers被exclude了。因为phytoplankton制造出了repellent。
这个句子中的客观事实是?主观结论是?
事实是:grazers很少,algae很多
结论是:因为algae制造出了repellent,致使grazer被exclude了
This was the first suggestion of algal defenses against grazing.
总结algal和grazer之间的关系。是algae defend了grazer,总结是由algae的数量减少了grazer的数量
所以总结一下第一段是对grazer和algae之间的关系的一个观点:negative correlation。具体表现有两种:grazer多,algae就少;algae多,grazer就少。
以下开始第二段
Perhaps the fact that many of these first studies considered only algae of a size that could be collected in a net , a practice that overlooked the smaller phytoplankton that we now know grazers are most likely to feed on, led to a de-emphasis of the role of grazers in subsequent research.
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