Algae exist in environments ranging from oceans, rivers, and lakes to ponds, brackish waters, and even snow. The book provides essential taxonomic and ecological information about one of the most diverse and ubiquitous groups of organisms on earth. •The current systems of classification of algae are based on the following main criteria: o kinds of photosynthetic pigments, o type or chemical nature of photosynthetic energy storage products o photosynthetic membranes’ (thylakoids) organization and other features of the chloroplasts. ADVERTISEMENTS: In this article we will discuss about the classification of algae by various botanists. They are the main component of phytoplankton.As such, they contribute to the food base of most marine ecosystems.. Multicellular seaweeds called kelp may grow as large as trees. Algae possess the usual eukaryotic structures - Golgi apparatus, mitochondria, … The term algae mean Aquatic Plants but differ from the plants in lacking a well-organized vascular conducting system and in having very simple reproductive structures. Classification by A. F. E. Fritsch (1935, 48): F. E. Fritsch (1935, 48) was the first who proposed a most comprehensive and authorative classification of algae in his book. Due to its diverse nature, the algal classification is also a difficult task. There are different types of algal classification They are the food base of ecosystems called kelp … Algae - Algae - Classification of algae: The classification of algae into taxonomic groups is based upon the same rules that are used for the classification of land plants, but the organization of groups of algae above the order level has changed substantially since 1960. The second section addresses systematics and covers virtually all algal groups ranging from microalgae to ultraplankton with individual chapters devoted to each. Algae are usually green, but they can be found in a variety of different colours. Algae are the aquatic eukaryotic organisms that have chlorophyll and carry out oxygen-producing photosynthesis. o the presence or absence of flagella (as well as the number and Freshwater Algae of North America: Ecology and Classification, Second Edition is an authoritative and practical treatise on the classification, biodiversity, and ecology of all known genera of freshwater algae from North America. Algae are photosynthetic eukaryotic organisms. Again some botanists opt for the modern phylogenetic system. There is three main Algae classification: Chlorophyceae – These are called green algae, due to the presence of pigments chlorophyll a and b. Ecology of Algae. Some schools of scientists prefer certain characters of algae while the other choose the remaining ones. Divided into three parts, the book introduces the very latest ideas on the evolution of algae and the concept of classification and illustrates contrasting viewpoints. Algae play significant roles as producers in aquatic ecosystems.Microscopic forms live suspended in the water column. o cell wall composition and structure. The study of algae is called Phycology or algology. Algae Classification. Freshwater Algae of North America: Ecology and Classification, Second Edition is an authoritative and practical treatise on the classification, biodiversity, and ecology of all known genera of freshwater algae from North America. They are either motile or non-motile. Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. 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