Bøger i Developments in Hydrobiology serien

The 12th Congress of SIDUO took place in Iguazu Falls, Argentina, where participants could enjoy the scenery of the magnificent Falls. The organization was sponsored by the University Department of Oph­ thalmology, Buenos Aires; the University Department of Ophthalmology, EI Salvador; SAUMB (Socieded Argentina de Ultrasonografia en Medecina y Biologia) and CLEO (Club Latinoamericano de Ecografia OftalmoI6gica). The Honorary President was Professor Horacio Soriano from Buenos Aires. The local organizing committee consisted of the following persons: President Roberto Sampaolesi Vice President Atilio Lombardi Scientific Secretary: Eduardo Mayorga Treasurers Guillermo Iribarren Abelardo Cavatorta We are particularly grateful to Doctor J S Hillmann, Professor K C Ossoinig and Doctor nvf Thijssen, who have helped with their counsel and advice. I would also like to thank our congress secretaries Graciela Massonat and Cristina Taegl for their enormous help in organizing SIDUO XII. To Doctor Javier Cassiraghi and Doctor Walter de Gregory our thanks for their outstanding help in organizing the scientific sessions. Thanks are due to the commercial exhibitors and most of all to our sponsors: Laboratorios Pfoertner Cornealent and Biophysic Medical. Our special thanks to Doctor Tomas Pfoertner for his great administrative expertise and counsel and to Christine Warren from Biophysic for her help in financing these proceedings. The 12th SIDUO thanks for their generous support: Pupilent Plastic Lens Argentina, Grafica SA and Laboratorio Optico Santamarina.

J. Wolff & J. , represented by Dr. mospheric carbon dioxide, by excessive burning of J. Indirect effects trace gases affect UV-B radiation, alkalinity of the might be less favourable: by the intensified sea, rate of photosynthesis, and greenhouse warm 'greenhouse process' (to which several other gases ing.

Proceedings of the Workshop on Biogeography of Freshwater Algae, held during the Fifth International Phycological Congress, Qingdao, China, July 1994

Proceedings of the 4th International Symposium on Aquatic Oligochaete Biology

Proceedings of the Fifteenth International Seaweed Symposium held in Valdivia, Chile, in January 1995

Proceedings of the 31st Symposium of the Estuarine and Coastal Sciences Association (ECSA) held in Bilbao, Spain, 3-7 July 2000

In this age of increased fundamental and applied research on biodiversity, no single volume was as yet devoted to the various temporal and spatial aspects of aquatic biodiversity.

Proceedings of the Third International Symposium on Cladocera, Bergen, Norway, 9--17 August 1993

Wetlands could be described as land and water at Tropical wetlands: one and the same time, and as such are very specific on the brink ecosystems. Whatever the reasons, often perceived as obstacles to human development many tropical wetlands still exist and support the and well-being.

Proceedings of the Second International Sediment/Freshwater Symposium held in Kingston, Ontario, June 15-18, 1981

In July 2001 experts from all around the world met in Reykjavik, Iceland to discuss various issues of polychaete biology. In particular the latest developments in cladistic inference of polychaete phylogeny were presented.

Proceedings of the Second International Symposium on Cladocera, Tatranska Lomnica, Czechoslovakia, September 13-20, 1989

Proceedings of the Fifth International Meiofauna Conference held in Ghent, Belgium, August 16-20, 1983.

Rivers around the world are threatened by changes in land use, climate, hydrological cycles, and biodiversity. This book explores a wide range of determining factors that feed in to global change and examines the impact they have on river ecosystems.

Proceedings of the International Conference held in Hong Kong, 25-28 June 1996

Proceedings of the International Symposium held at Mombasa, Kenya, September 24-30, 1990

This book will be of interest to researchers in the field of aquatic ecology, river system functioning, and water surface pollution, to postgraduate students, to the institutions involved in water resource management, and to the drinking water and waste water treatment industries.

Proceedings of the 10th Workshop of the International Association of Phytoplankton Taxonomy and Ecology (IAP), held in Granada, Spain, 21-29 June 1996

This work presents the state of the art of aquatic and semi-aquatic ecological restoration projects in The Netherlands. Starting from the conceptual basis of restoration ecology, the successes and failures of hundreds of restoration projects are described.

Proceedings of the First International Conference held in Lancaster, England, July 11-14, 1988

A compilation of refereed papers from the International Symposium held in St. Petersburg, Russia, September 12-17, 1994

Proceedings of the 31st European Marine Biology Symposium, held in St. Petersburg, Russia 9-13 September 1996

This book tells a story of a large lake affected by agricultural and urban activities that have led to severe eutrophication problems with nuisance blue-green algal blooms.

Proceedings of the 17th BMB Symposium, 25-29 November 2001, Stockholm, Sweden

The first four sections of the book (Nutrient fluxes, Biotic structure, Trophic interactions and Whole lake studies) deal with theoretical aspects of lake functioning while the fifth (Biomanipulation, restoration and management) is devoted to practical measures undertaken to improve water quality in shallow lakes.

Proceedings of the 33rd European Marine Biology Symposium, held at Wilhelmshaven, Germany, 7-11 September 1998

Proceedings of the Third International Conference on Copepoda