After an introduction outlining the chemical and physical characteristics of the environment, the book goes on to look at the actual habitats in which algae occur. The communities of the individual habitats such as open water, sediments, rocky shores, coral reefs, hot springs, sea ice, soil, etc., are then discussed with special phenomena highlighted, for example rhythmic activity, nitrogen fixation and buoyancy. There are also chapters on seasonal cycles of algal growth, energy flow, geographical dispersion, palaeo-ecology and contribution to sediments. The importance of algae in symbiotic relationships and their considerable significance to animal grazers in aquatic food chains are also discussed. The final chapter deals with the relationships of algae to eutrophication and pollution of water. This is an important aspect, which can only be understood through an appreciation of algal ecology.
Fray Gabriel TUllez, who wrote under the pen-name of Tirso de Molina, is the third great dramatist (with Lope de Vega and Calder?n) of the 17th century Spanish theatre. If Lope heads all the rest for
This book presents new data and a formal analysis of the inflectional system and syntax of Kayardild, a typologically striking language of Northern Australia. It sets forth arguments for recognizing a
