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首页> 外文期刊>Ecology letters >From mice to elephants: overturning the 'one size fits all' paradigm in marine plankton food chains
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From mice to elephants: overturning the 'one size fits all' paradigm in marine plankton food chains

机译：从老鼠到大象：推翻海洋浮游生物食物链中的“千篇一律”范式

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It is widely believed that consumer control is a weak regulator of marine phytoplankton communities. It remains unclear, however, why this should be the case when marine consumers routinely regulate their prey at higher trophic levels. One possibility is that the weak consumer control of phytoplankton communities results from the inability of field researchers to effectively account for consumer-prey trophic relationships operating at the scale of the plankton. We explored this issue by reviewing studies of trophic control in marine plankton. Experimental studies indicate that size is a critical determinant of feeding relationships among plankton. In sharp contrast, of the 51 field studies reviewed, 78% did not distinguish among the sizes or species of phytoplankton and their consumers, but instead assumed a general bulk phytoplankton-zooplankton trophic connection. Such an approach neglects the possibility that several trophic connections may separate the smallest phytoplankton (0.2m) from the larger zooplankton (1000m), a remarkable size differential exceeding that between a mouse (10 cm) and an elephant (2500 cm). The size-based approach we propose integrates theory, experiments and field observations and has the potential to greatly enhance our understanding of the causes and consequences of recently documented restructuring of plankton communities.
机译：人们普遍认为，消费者控制是海洋浮游植物群落的弱调节器。然而，尚不清楚的是，当海洋消费者常规地将其猎物调节在较高的营养水平时，为什么会这样呢？一种可能性是，消费者对浮游植物群落的控制不力是由于野外研究人员无法有效地解释以浮游生物规模运作的消费者与猎物的营养关系。我们通过回顾海洋浮游生物的营养控制研究探索了这个问题。实验研究表明，大小是浮游生物之间觅食关系的关键决定因素。与之形成鲜明对比的是，在所审查的51个田间研究中，有78％的人没有区分浮游植物及其消费者的大小或种类，而是假定了一般的浮游植物与浮游植物的营养联系。这种方法忽略了几个营养连接可能会将最小的浮游植物（0.2m）与较大的浮游动物（1000m）分开的可能性，这种明显的大小差异超过了老鼠（10 cm）和大象（2500 cm）之间的差异。我们提出的基于大小的方法将理论，实验和现场观察结合在一起，并且有可能极大地增强我们对最近记录的浮游生物群落重组的原因和后果的理解。

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