Methods of exploration and analysis of the environment of aquatic vegetation

摘要: Aquatic plants are found wherever there is liquid water and at least a modest flux of light. Sometimes they conspicuous: 700 km2 head-high Typha dominguensis around the African L. Chilwa or 5000 equally tall Phragmites in Danube delta even larger Nile Sudd. Many freshwaters appear, first sight, to lack plants. A filter microscope will rapidly show that such waters usually do contain large populations microscopic algae. If enough give colour. Even unpromising conditions Antarctica seasonal lakes, frozen solid for most year, which an astonishingly active micro macro-flora. In contrast peat bogs, consist masses ‘gelled’ by about 10% organic matter. latter case so conspicuous system rarely considered be (what it actually is) body freshwater.