The food consumption of the world's seabirds
The food consumption of the world's seabirds
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DOI：
10.1098/rsbl.2003.0153
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发表时间：
2004-05-07
影响因子：
4.7
通讯作者：
Brooke, MD
中科院分区：
文献类型：
--
作者：
Brooke, MD
随着对世界上所有海鸟种群规模的了解的提高，可以对它们每年的食物消耗量进行初步估计。了解猎物的身体质量和能量密度，就有可能采用标准的代谢方程来估计海鸟每天和每年的消耗量。使用这种方法，并假设每一对记录的繁殖对至少有三个个体存活，那么世界上所有海鸟的年食物消耗量为7000万吨（Mt: 95% CI 5590 - 8370 Mt）。如果对每一对繁殖的个体存活的数量作更自由的假设，总数显然会增加。主要的消费者大多是高纬度的，通常是远洋物种——企鹅、海燕和海雀。这一总数与全球渔业捕捞量相似，目前约为8000万吨。
Improving knowledge of the population sizes of all the world's seabirds allows this provisional estimate of their annual food consumption. Knowing the body mass and energy density of prey it is possible to employ standard metabolic equations to estimate daily and hence annual consumption of a seabird. Using this approach, and assuming that, at the least, there are three individuals alive for every recorded breeding pair, the annual food consumption of all the world's seabirds is 70 million tonnes (Mt: 95% CI 55.9-83.7 Mt). The total obviously increases if more liberal assumptions are made about the number of individuals alive per breeding pair. The principal consumers are mostly high-latitude, often pelagic species-penguins, petrels and auks. The total is similar to the global fisheries landings, currently ca. 80 Mt.