Visionneuse

Date_TXT

New York : Academic press , 1972

Cote

578.77 RUS/T10

Auteur

Russell, F. S

Type de document

Livre

Description :

Volume 10 contains four articles, three of which will particularly interest ecologists and the fourth, fish farmers. The first, by R. K. Dell, is a comprehensive account of the distribution and habits of bottom-living plants and animals in the Antarctic. Since the war, research in this region has been much intensified and this review brings together the very scattered literature on Antarctic marine flora and fauna from the early expeditions up to the present time. It should prove of great value to all interested in the distribution of marine organisms. The next article, by H. B. Moore, analyses many published observations on the biology of intertidal and shallow-water animals throughout the world in relation to temperature, salinity and other environmental factors. It is concluded that the tropics are regions of greater stress than the temperate zone, as are the polar seas. This has to be considered as one of the possible factors leading to high speciation in the tropics. The third article, by P. S. Meadows and J. I. Campbell, considers the methods by which animals find and select their habitats. In recent years there has been increased emphasis on experimental studies and it is the nature of the reaction to different factors of the environment identified by this means which enables us to understand how a particular habitat may be selected. The final article, by C. B. Cowey and J. R. Sargent, reviews the present state of knowledge about nutrition in fish. Apart from its general physiological interest, this is of special value now that the cultivation of marine fish under artificial conditions is becoming a practical proposition.