EIFAC OCCASIONAL PAPER - 19
EUROPEAN INLAND FISHERIES ADVISORY COMMISSION
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Henrik W. de Nie
c/o Department of Fish Culture and Fisheries
of the Agricultural University
P.O. Box 338
6700 AH WAGENINGEN
The Netherlands
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED
NATIONS
Rome, 1987
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© FAO 1987
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2. PLANTS IN THE AQUATIC HABITAT
2.1. MACROPHYTES
2.2. MICROPHYTES
2.3. THE PHYSICAL AND CHEMICAL HABITAT CHARACTERISTICS
2.4. AQUATIC VEGETATION AND INVERTEBRATES
2.5. AQUATIC MACROPHYTES AND FISH
3. THE DECLINE IN AQUATIC PLANTS
3.1 THE DECLINE IN EMERGENT VEGETATION
3.2. THE DECLINE IN SUBMERSED AND FLOATING-LEAVED AQUATIC VEGETATION
4. CAUSES OF THE DECLINE IN AQUATIC PLANTS
4.1. THE CAUSES OF THE DECLINE IN EMERGENT VEGETATION (exemplified by data on reed)
4.2. CAUSES OF THE DECLINE IN SUBMERSED AND FLOATING-LEAVED MACROPHYTES
4.3. A GENERAL HYPOTHESIS
5.MANAGEMENT, CONTROL AND RESTORATION MEASURES