Mean mixed depth of sediments: The wherefore and the why
Mean mixed depth of sediments: The wherefore and the why
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DOI：
10.4319/lo.1998.43.3.0524
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发表时间：
1998-05-01
影响因子：
4.5
通讯作者：
Boudreau, BP
中科院分区：
文献类型：
--
作者：
Boudreau, BP
捕食性生物的活动以及由此产生的生物扰动效应在很大程度上局限于海洋沉积物的狭窄表面带，全球范围内环境不变的平均值为9.8厘米，标准偏差为4.5厘米。目前可用的动物群行为理论不能定量预测这一观察结果。一个新的简单模型解释了资源(食物)丰度、其反应性和生物扰动强度之间的反馈，从而得出了9.7厘米的定量估计。这个模型构成了我们对生物扰动理解的一个根本进步。
The activities and consequently the bioturbational effects of deposit-feeding organisms are largely restricted to a narrow surficial zone of marine sediments with a worldwide, environmentally invariant mean of 9.8 cm with a standard deviation of 4.5 cm. Currently available theories of infaunal behavior cannot predict quantitatively this observation. A new simple model that accounts for the feedback between resource (food) abundance, its reactivity, and the intensity of bioturbation leads to a quantitative estimate of 9.7 cm. This model constitutes a fundamental advance in our understanding bioturbation.