Hypertrophic Ecosystems

1. Stability of hypertrophic ecosystems and causes of hypertrophy

   1. Modelling Carbon and Phosphorus in a Small Hypertrophic North German Lake

      • Hans-Jürgen Krambeck, Christiane Krambeck

      Pages 159-169

   2. An Algal Bloom Model as a Tool to Simulate Management Measures

      • F. J. Los

      Pages 171-178

   3. Phosphorus Stability in a Hypereutrophic Lake

      • S. B. Mercil, C. M. Conway, L. E. Shubert

      Pages 179-190

   4. Structural and Functional Quantification in a Series of Hungarian Hypertrophic Shallow Lakes

      • János Oláh

      Pages 191-202

   5. Muddy Odour in Fish from Hypertrophic Waters

      • Per-Edvin Persson

      Pages 203-208

   6. The Importance of Hydrologic Factors on the Relative Eutrophic Impacts of Point and Non-Point Pollution in a Reservoir

      • C. W. Randall, T. J. Grizzard, R. C. Hoehn

      Pages 209-219

   7. Environmental Constraints on Anabaena N_2- And CO₂-Fixation: Effects of Hyperoxia and Phosphate Depletion on Blooms and Chemostat Cultures

      • D. B. Shindler, H. W. Paerl, P. E. Kellar, D. R. S. Lean

      Pages 221-229

   8. Toxicity Fluctuations and Factors Determining Them

      • L. A. Sirenko

      Pages 231-234

   9. Stability and Multiple Steady States of Hypereutrophic Ecosystems

      • Dietrich Uhlmann

      Pages 235-247

2. Foodchain properties, productivity and utilization of hypertrophic ecosystems

   1. Front Matter

      Pages 249-249

      PDF

   2. On the Role of Soil in the Maintenance of Fish Ponds’ Fertility

      • Yoram Avnimelech, Malka Lacher

      Pages 251-254

   3. Fish as a Factor Controlling Water Quality in Ponds

      • Jan Fott, Libor Pechar, Miroslava Pražáková

      Pages 255-261

   4. The Role of Fishery Management in Counteracting Eutrophication Processes

      • Karol Opuszyński

      Pages 263-269

   5. Fish Production in Some Hypertrophic Ecosystems in South India

      • A. Sreenivasan

      Pages 271-277

3. Rehabilitation

   1. Front Matter

      Pages 279-279

      PDF

   2. Enrichment and Recovery of a Malaysian Reservoir

      • P. T. Arumugam, J. I. Furtado

      Pages 281-285

   3. Lake Treatment with Hydrogen Peroxide

      • G. Barroin

      Pages 287-294

   4. Characterization of the Recovery Processes in Hypertrophic Lakes in Terms of Actual (Lake Water)- and Potential (Algal Assay) Chlorophyll

      • Anders Claesson, Sven-Olof Ryding

      Pages 295-303

   5. Morphometrically Conditioned Eutrophy and Its Amelioration in Some British Columbia Lakes

      • T. G. Northcote

      Pages 305-315

   6. Hartbeespoort Dam: A Case Study of a Hypertrophic, Warm, Monomictic Impoundment

      • W. E. Scott, P. J. Ashton, R. D. Walmsley, M. T. Seaman

      Pages 317-322

The idea of convening an international workshop on hypertrophic ecosystems originated during the 20th S.I.L. Congress in Copenhagen. A group of about 30 delegates met there in an informal gathering to discuss the specific problems of lakes which have reached a noxious stage of eutrophication. This ad hoc group realized its own specific identity within the limnological community and suggested the organization of a specialized future meeting on hypertrophic ecosystems. After two years of preparatory work, the workshop was fmally held in Vaxjo, Sweden, between September 10 and 14, 1979, on the premises of the University campus. The Institute of Limnology, University of Lund (Professor Sven Bjork), undertook the task of host and organizer. The City ofVaxjo and the University of Lund co-sponsored the event, which was held under the auspices and patronage of the Societas Internationalis Limnologiae. The objective of the workshop was to seek better understanding of highly-eutrophic, disturbed and unstable aquatic ecosystems (lakes, reservoirs and ponds developing noxious algal and bacterial blooms, fluctuating in their water quality on a daily and seasonal scale, producing gases, off-flavor and toxic substances, experiencing periodic anoxia and massive fish kills, etc.), Le., systems requiring corrective measures and new concepts for their solution beyond those generally accepted for 'normal' eutrophic systems.

• Eutrophication
• algae
• ecosystem
• eutrophication process
• lake water
• limnology
• nutrient load
• phosphorus loading
• phytoplankton
• shallow lakes
• water quality

• Canada

  Jan Barica

• The Netherlands

  Luuc R. Mur

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