"Algues marines Écologie." . . "Algas marinas." . . . . "Einführung" . . . . . . . . . . . . . . . . . "Pictorial works" . "Seaweeds" . . . "This detailed look at seaweeds describes the classifications that encompass some 10,000 species of seaweeds, documents their adaptations and life cycles, and looks at human uses for seaweeds and their place on the economies of different countries. Threats to seaweed are examined, such as coastal developments, pollution, and the introduction of non-native seaweed populations. From microscopic organisms on tidal rocks to dense marine forests, seaweeds vary widely in size and are amazingly well adapted to both the Arctic and the tropics. Thomas presents a detailed look at what seaweeds are, how they live, and why humans value them. 100 photos." . . . . . . "Algues marines Ecologia." . . "Meeresalgen." . . "Algues marines." . . "Seetang." . .