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首页> 外文期刊>Trends in Ecology & Evolution >Ecosystem ecology: Size-based constraints on the pyramids of life (Review)
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Ecosystem ecology: Size-based constraints on the pyramids of life (Review)

机译:生态系统生态:对生命金字塔的大小限制(综述)

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摘要

Biomass distribution and energy flow in ecosystems are traditionally described with trophic pyramids, and increasingly with size spectra, particularly in aquatic ecosystems. Here, we show that these methods are equivalent and interchangeable representations of the same information. Although pyramids are visually intuitive, explicitly linking them to size spectra connects pyramids to metabolic and size-based theory, and illuminates size-based constraints on pyramid shape. We show that bottom-heavy pyramids should predominate in the real world, whereas top-heavy pyramids indicate overestimation of predator abundance or energy subsidies. Making the link to ecological pyramids establishes size spectra as a central concept in ecosystem ecology, and provides a powerful framework both for understanding baseline expectations of community structure and for evaluating future scenarios under climate change and exploitation.
机译:传统上,用营养金字塔描述生态系统中的生物量分布和能量流,并且越来越多地使用尺寸谱来描述,特别是在水生生态系统中。在这里,我们表明这些方法是相同信息的等效和可互换表示。尽管金字塔在视觉上是直观的,但将金字塔与尺寸谱显式链接可以将金字塔与新陈代谢和基于尺寸的理论联系起来,并阐明基于尺寸的金字塔形状约束。我们表明,在现实世界中,底层沉重的金字塔应该占主导地位,而顶层沉重的金字塔表明对捕食者的丰度或能源补贴的高估。与生态金字塔的联系将规模光谱确立为生态系统生态学的中心概念,并为理解社区结构的基线期望以及评估气候变化和开发下的未来情景提供了强大的框架。

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