Phytoplankton periodicity: the interactions of form, function and environmental variability
Phytoplankton periodicity: the interactions of form, function and environmental variability
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DOI：
10.1111/j.1365-2427.1984.tb00027.x
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发表时间：
1984-04
影响因子：
2.7
通讯作者：
C. Reynolds
中科院分区：
文献类型：
--
作者：
C. Reynolds
总结。1. 本文综述了温带湖泊物种优势度的周期性循环。通过将单个物种归为组合，证明了周期循环之间的高相似性。参考高纬度和低纬度的湖泊，以及河流，显示出相同的广泛模式的部分一致性。2. 强调了人口动态在形成社区结构方面的作用。已知两种类型的变化：由对急剧变化的资源比梯度的特定反应调节的自生的、单向的子序列（演替）；还有同种异体的变化，由物理环境的可变性调节。3. 分析代表性物种对同种异体变化的反应，可以进一步对这些组合进行分组。根据浮游植物的单位大小和表面积/体积比，这些分类与相同浮游植物种类之间明显的形态差异相一致。4. 这些特性决定了藻类对温度、混合和暴露于水下光场的季节性变化的生理反应。对损失过程的相对抵抗（下沉、放牧）、短期光合适应和垂直迁移行为使这些反应更加复杂。5. 图形摘要介绍了与物理、化学和生物环境变量的层次结构有关的形态、生理和行为介导的反应。浮游植物的周期性是这些相互作用的结果。
SUMMARY. 1. This review considers the periodic cycles of species dominance in a wide selection of temperate lakes. By ascribing individual species to assemblages, a high incidence of similarity among periodic cycles is demonstrated. Reference to lakes at high and low latitudes, as well as to rivers, shows conformity to parts of the same broad patterns. 2. The role of population dynamics in shaping community structure is emphasized. Two types of change are recognized: autogenic, undirectional subsequences (successions), regulated by specific responses to critically changing resource-ratio gradients; and allogenic changes, regulated by variability in the physical environment. 3. Analysis of the responses of representative species to allogenic change permits further grouping of the assemblages. These groupings coincide with clear morphological distinctions among the same phytoplankton species according to their unit sizes and surface area/volume ratios. 4. It is argued that these properties condition the physiological responses of algae to seasonal variations in temperature, mixing and exposure to the underwater light field. The responses are compounded by relative resistances to loss processes (sinking, grazing), by short-term photosynthetic adaptation and vertical migratory behaviour. 5. Graphical summaries are presented that relate the morphologically-, physiologically- and behaviourally-mediated responses to a hierarchy of physical, chemical and biotic environmental variables. Phytoplankton periodicity is the outcome of these interactions.