signature=ed19d8ab7ffeeb052c7a67044b685408,Forage Fish, 978-613-0-20893-6, 6130208936 ,9786130208936-优快云博客

这本书主要由网上免费资源组成，探讨了作为海洋生态系统基础的小型鱼类——食饵鱼。这些鱼通常以浮游生物为食，通过成群结队的方式弥补它们体型小的不足。大型捕食者如其他鱼类、海鸟和海洋哺乳动物依赖食饵鱼为食。食饵鱼的集群行为为海洋食物网提供了重要的能量来源，吸引了捕食者的迁徙。

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ISBN-13:

978-613-0-20893-6

ISBN-10:

6130208936

EAN:

9786130208936

Könyv nyelve:

angol

Ismertető:

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Forage fish are small fish which are preyed on by larger predators for food. Predators include other larger fish, seabirds and marine mammals. Typical ocean forage fish feed near the base of the food chain on plankton, often by filter feeding. They include the fishes of the family Clupeidae, as well as anchovies, capelin and halfbeaks. Forage fish compensate for their small size by forming schools. Some swim in synchronised grids with their mouths open so they can efficiently filter plankton. These schools can become immense shoals which move along coastlines and migrate across open oceans. The shoals are concentrated fuel resources for the great marine predators. The predators are keenly focused on the shoals, acutely aware of their numbers and whereabouts, and make migrations themselves that can span thousands of miles to connect, or stay connected, with them.

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Kiadja:

25.07.2011

Raktárkészlet:

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Ár:

29,00 €

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