Restoration and Recovery of Shallow Eutrophic Lake Ecosystems in The Netherlands: Proceedings of a conference held in Amsterdam, The Netherlands, ... 1991: 74 (Developments in Hydrobiology, 74) - Hardcover

Hardcover

ISBN 10: 0792316975 ISBN 13: 9780792316978

Publisher: Springer, 1992

Synopsis

are considered quantitatively and qualitatively and within awiderangeofspatialand time scales. The hydrological studies in the interdisciplinary The present hydrological situation in the area workgroup WQL (Water Quality research Loos- is the result of a complex sequence of events of drecht lakes) on restoration of the Loosdrecht natural and man-made origin. The present distri- Lakes have been carried from 1982-1988 (Kal bution of nutrients in the water systems of the et al. , 1984; Engelen & Kal, 1985; Kal, 1986). The area can be understood only when the hydrolog- aim of the study was to provide an integrated ical history is traced back. One has to start at the description of the abiotic part of the water sys- beginning of the Holocene period and to follow tems and its contribution to thefunctioningofthe up closely the increasing interference of man. aquatic ecosystems in the Loosdrecht Lakes (En- Overthelastcenturies and decades man has been gelen, 1986). changing the flow systems around the lakes by Theresults hadto servethefollowingpurposes: digging peat, draining lakes, extracting ground- water, maintaining fixed surface water levels in General framework. The integrated hydrological polders and transferring water from adjacent riv- studies had to provide a general frame of refer- ers and canals to supply the lakes to maintain ence for the other project participants represent- their water levels.

About this title

Synopsis:

This book contains the proceedings of a two-day symposium held in Amsterdam (18 and 19 April 1991). There are 26 scientific papers divided into three parts. Part One presents the results of a ten-year study carried out by the multi-disciplinary WQL working group (Water Quality research Loosdrecht lakes) on the Loosdrecht lakes. The central theme of the studies was the quantitative phosphorus flux in the various compartments of the ecosystem (including the food chain), paying special attention to supplementary measures to combat eutrophication.Several papers portray the state of the different aquatic environments, pertaining especially to ecological assessment of their water quality, complex hydrology, and interactions at the sediment-water interface, as well as between phytoplankton, detritus, zooplankton and fish. An overview of the food chain in the Loosdrecht lakes is given, in the light of relationships between the physical-chemical environment on the one hand and between the phytoplankton and zooplankton on the other, using multivariate analysis.The vast amount of data collected on the structural and functional aspects of the ecosystem enabled a mathematical eutrophication model, with which to simulate additional measures.

The logistics employed and the infrastructure developed by the WQL facilitated ground-truth verification of the remote sensing studies.The research studies and conclusions derived from them were critically analyzed from the points of view of the national eutrophication policy and the regional water authority. A list of WQL publications, the last chapter in Part One, is preceded by a brief synthesis of WQL studies by the editors. Part Two contains more papers with studies carried out on other lake ecosystems. Here the emphasis is a critical analysis of eutrophication. These studies were directed at additional restoration measures, such as flushing, dredging, chemomanipulation and biomanipulation, either in isolation or in combination. In Part Three, the Epilogue, the editors briefly review the causes of water quality deterioration, lake eutrophication and problems of resilience and delay in recovery of these shallow, eutrophic systems in the Netherlands.

About this edition

• Publisher: Springer
• Publication date: 1992
• ISBN 10: 0792316975
• ISBN 13: 9780792316978
• Binding: Hardcover
• Number of pages: 305
• Editor: Van Liere Louis, Gulati Ramesh D.