The Role of Episodic Atmospheric Nutrient Inputs in the Chemical and Biological Dynamics of Oceanic Ecosystems
The Role of Episodic Atmospheric Nutrient Inputs in the Chemical and Biological Dynamics of Oceanic Ecosystems
复制标题
间歇性大气养分输入在海洋生态系统化学和生物动态中的作用
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
D. J. Gifford
中科院分区：
文献类型：
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作者：
P. Donaghay;P. Liss;R. Duce;D. R. Kester;A. Hanson;T. Villareal;N. Tindale;D. J. Gifford
据推测，大气中的铁和氮输入在开放海洋生态系统的化学和生物动力学中发挥着重要作用（Menzel 和 Spaeth，1962 年；Duce，1986 年）。这一假说引发了相当多的讨论和争议（参见Martin，1991，本期；Miller 等，1991，本期；Morel 等，1991，本期）。大部分讨论都集中在大时间和空间尺度上大气养分输入率的相对重要性、铁营养的生理学和化学、浮游植物的元素组成（例如Fe/C）以及对特定时间和地点浮游植物生长的铁限制测定的解释。跨学科分析使人们认识到，海洋生态系统的生物反应可能不仅取决于生物需求和年平均大气输入的大规模变化，还取决于这些输入的时间和空间变化，取决于控制这些输入命运的化学和生物过程，以及控制接收这些输入的开放海洋生态系统动态的生物、化学和物理相互作用。这一跨学科分析的结果总结如下。
ATMOSPHERIC INPUTS of iron and nitrogen have been hypothesized to play an important role in the chemical and biological dynamics of openocean ecosystems (Menzel and Spaeth, 1962; Duce, 1986). This hypothesis has stimulated considerable discussion and controversy (see Martin, 1991, this issue; Miller et al., 1991, this issue; Morel et al., 1991, this issue). Much of this discussion has focused on the relative importance of atmospheric nutrient input rates over large time and space scales, the physiology and chemistry of iron nutrition, the elemental composition of phytoplankton (e.g., Fe/C), and the interpretation of assays for iron limitation ofphytoplankton growth at a particular time and place. An interdisciplinary analysis has led to the realization that biological responses of oceanic ecosystems are likely to be dependent not only on biological requirements and the large-scale variability in annual-average atmospheric inputs but also on the temporal and spatial variability of these inputs, on the chemical and biological processes controlling the fate of those inputs, and on the biological, chemical, and physical interactions controlling the dynamics of open-ocean ecosystems receiving those inputs. The results of this interdisciplinary analysis are summarized below.