Nutrient Dynamics and Retention in Land/Water Ecotones of Lowland, Temperate Lakes and Rivers (Developments in Hydrobiology, 82)

Ecotones, or boundary zones between land and inland waters (such as lakes, streams and rivers), are the principal routes for transport of organic matter and nutrients across landscapes via physical and biological vectors. The ecotone is the place of cumulation and transformation of __in situ__ production as well as of allochthonous material from adjacent aquatic and terrestrial systems. The ecotype functions as an important barrier or filter for principal nutrients, such as phosphorus and nitrogen, responsible for the eutrophication and degradation of surface waters. Intensive forest cutting, agriculture, pollution and bank regulation, urbanization and hydrotechnical constructions seriously endanger the ecotone systems and damage their protective function. It is vital to develop a scientific understanding of the behaviour of phosphorus and nitrogen in these transitional boundary habitats. Such an understanding is important for the rational protection, management and restoration of ecotones connected with lakes and rivers. The importance of nutrient cycling and retention is discussed from the point of view of ecotone function, management and reconstruction in order to sustain its protective role for water bodies. Various types of land/water transitory zones are discussed: wetlands, lake littoral systems, riparian zones of rivers, streams and brooks, the contact zones between groundwater and surface waters of lakes and rivers, air--water interfaces, and patch/ecotone structures in watersheds. Front Matter....Pages i-xiv Seasonal nitrogen dynamics in reed beds ( Phragmites australis (Cav.) Trin. ex. Steudel) in relation to productivity....Pages 1-12 Growth and nutrient uptake by two species of Elodea in experimental conditions and their role in nutrient accumulation in a macrophyte-dominated lake....Pages 13-18 Macrophyte-related shifts in the nitrogen and phosphorus contents of the different trophic levels in a biomanipulated shallow lake....Pages 19-26 Functioning of land-water ecotones in relation to nutrient cycling....Pages 27-32 Some considerations on the functioning of tropical riparian ecotones....Pages 33-38 Nitrogen and phosphorus dynamics and retention in ecotones of Lake Titicaca, Bolivia / Peru....Pages 39-47 Detritus and nutrient dynamics in the shore zone of lakes: a review....Pages 49-58 Microbial decomposition of freshwater macrophytes in the littoral zone of lakes....Pages 59-64 Frost formation in the ecotonal zone and its role for release of nutrients....Pages 65-72 Effect of filtering activity of Dreissena polymorpha (Pall.) on the nutrient budget of the littoral of Lake Mikołajskie....Pages 73-79 The role of small mammals and birds in transport of matter through the shore zone of lakes....Pages 81-93 Transport and retention of matter in riparian ecotones....Pages 95-101 Nitrate transformation and water movement in a wetland area....Pages 103-111 Retention of nitrogen in small streams artificially polluted with nitrate....Pages 113-122 Retention of nitrogen and phosphorus in a Danish lowland river system: implications for the export from the watershed....Pages 123-135 Flow and retention of particulate organic matter in riparian fluvial habitats under different climates....Pages 137-142 Importance of flood zones for nitrogen and phosphorus dynamics in the Danube Delta....Pages 143-148 The Vistula river and its riparian zones....Pages 149-157 Hydrological problems of the Vistula river valley near Płock....Pages 159-165 The role of water exchange between a stream channel and its hyporheic zone in nitrogen cycling at the terrestrial—aquatic interface....Pages 167-184 Nutrient and flow vector dynamics at the hyporheic / groundwater interface and their effects on the interstitial fauna....Pages 185-198 Storage and dynamics of organic matter in different springs of small floodplain streams....Pages 199-209 Transport of groundwater-borne phosphorus to Lake Bysjön, South Sweden....Pages 211-216 Role of aquatic surface microlayer in the dynamics of nutrients and organic compounds in lakes, with implications for their ecotones....Pages 217-225 The shore vegetation in selected lakeland areas in northeastern Poland....Pages 227-237 Energy control of matter fluxes through land—water ecotones in an agricultural landscape....Pages 239-248 Role of meadow strips for migration of dissolved organic compounds and heavy metals with groundwater....Pages 249-256 The dynamics and retention of phosphorus in lentic and lotic patches of two river—lake systems....Pages 257-268 Particulate phosphorus sedimentation at the river inflow to a lake....Pages 269-274 Patterns of spatial distribution of phosphorus regeneration by zooplankton in a river—lake transitory zone....Pages 275-284 Drainage history and land use pattern of a Swedish river system — their importance for understanding nitrogen and phosphorus load....Pages 285-296 Impact on lake development of changed agricultural watershed exploitation during the last three centuries....Pages 297-308 Nutrient retention by the Kis-Balaton Water Protection System....Pages 309-320 A multi-pond system as a protective zone for the management of lakes in China....Pages 321-329 Management of land / inland water ecotones: needs for regional approaches to achieve sustainable ecological systems....Pages 331-340 The application of the ecotone concept in defining nutrient management requirements for the upper Potomac River basin....Pages 341-349 Modelling the effects of alternative nutrient control policies — the example of Slapton Ley, Devon, UK....Pages 351-361