The allometric relationships for plant annualized biomass production (“growth”) rates, different measures of body size (dry weight and length), and photosynthetic biomass (or pigment concentration) per plant (or cell) are reported for multicellular and unicellular plants representing three algal phyla; aquatic ferns; aquatic and terrestrial herbaceous dicots; and arborescent monocots, dicots, and conifers. Annualized rates of growth G scale as the 3/4-power of body mass M over 20 orders of magnitude of M (i.e., G ∝ M3/4); plant body length L (i.e., cell length or plant height) scales, on average, as the 1/4-power of M over 22 orders of magnitude of M (i.e., L ∝ M1/4); and photosynthetic biomass Mp scales as the 3/4-power of nonphotosynthetic biomass Mn (i.e., Mp ∝ Mn3/4). Because these scaling relationships are indifferent to phylogenetic affiliation and habitat, they have far-reaching ecological and evolutionary implications (e.g., net primary productivity is predicted to be largely insensitive to community species composition or geological age).
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机译:报告了多细胞和单细胞植物的植物年生物量产量(“生长”)速率,不同尺寸的体形(干重和长度)以及每株植物(或细胞)光合生物量(或色素浓度)的异形关系。藻门水生蕨类;水生和陆生双子叶植物;和树状单子叶植物,双子叶植物和针叶树。年增长率G等于M超过20个数量级的M的3/4幂(即G ∝ M 3/4 sup>);植物体长L(即细胞长度或植物高度)平均在M的22个数量级(即L ∝ M 1/4 sup>)上为M的1/4幂。 );和光合生物质Mp随非光合生物质Mn(即Mp ∝)的3/4倍而变化 Mn 3/4 sup>)。因为这些缩放 的关系对种系关系和栖息地都无关紧要, 它们具有深远的生态和进化意义(例如, 净初级生产力预计在很大程度上对 群落物种组成或地质年龄)。
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