Island Stirring Effects On Phytoplankton Growth
Island Stirring Effects On Phytoplankton Growth
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DOI：
10.1029/ln017p0041
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
J. Simpson;P. Tett
中科院分区：
文献类型：
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作者：
J. Simpson;P. Tett
长期以来，人们一直怀疑，海洋岛屿的存在所造成的水流扰动可能是岛屿附近生物量和产量增加的原因。Doty和Oguri（1956年）报告了在夏威夷奥廷加附近的观测结果，创造了“岛屿质量效应”一词来描述这种增强，他们解释说，岛屿侧翼的底栖藻类或珊瑚可能会从经过的沃茨中聚集无机营养物质，最终使这些营养物质为浮游植物所用。他们借鉴了较早的文献（如Gran，1912年），这些文献报告了大陆边缘附近海洋浮游生物的增加。Dandonneau和Charpy（已提交）对西南太平洋的数据进行了详细的统计分析，发现海面光合色素浓度与离最近岛屿的距离之间仅存在偶然和微弱的关系。色素遥感尚未广泛用于观测岛屿周围的生物量分布（但可参见本卷Simpson和Tett关于这一领域令人兴奋的可能性的例子）。其他关于岛屿质量效应的说法是轶事，通常没有物理结构和流场的测量结果支持。因此，正如Gilmartin和Revelante（1974）在对夏威夷群岛的进一步研究中所评论的那样，“除了Doty和Oguri（1956）的工作之外，所谓的'岛屿群'效应既没有得到很好的记录，也不清楚增加的原因。”
It has long been suspected that the disturbance of the flow caused by the presence of an oceanic island may be responsible for increased biomass and production near the island. Doty and Oguri (1956), reporting observations near Oahu, Hawaii, coined the phrase “island mass effect” to describe such enhancement, which they explained with the suggestion that benthic algae or corals on the island’s flanks might concentrate inorganic nutrients from the passing waters, grazing eventually making these nutrients available to phytoplankton. They drew on older literature (e.g. Gran, 1912) reporting an increase in oceanic plankton near continental margins. Dandonneau and Charpy (submitted), in a detailed statistical analysis of data from the S.W. Pacific, could find only occasional and weak relationships between sea-surface photosynthetic pigment concentration and distance from the nearest island. Remote sensing of pigments has not yet been used extensively to observe biomass distributions around islands (but see Simpson and Tett, this volume, for an example of the exciting possibilities in this area). Other accounts of island mass effects are anecdotal and often unsupported by measurements of the physical structure and flow field. It thus appears to remain true, as Gilmartin and Revelante (1974) remarked in a further study of the Hawaiian islands, that ‘except for the work of Doty and Oguri (1956), the so-called ‘island mass’ effect is neither well documented nor are the causes for the increases clear.’