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This volume presents recent advances in the research on meromictic
lakes and a state-of-the art overview of this area. After an
introduction to the terminology and geographic distribution of
meromictic lakes, three concise chapters describe their physical,
chemical and biological features. The following eight chapters
present case studies of more than a dozen meromictic lakes, showing
the variety of physical and biochemical processes that promote
meromixis. The result is a broad picture of the ecology and
biochemistry of meromictic lakes in tropical and cold regions, in
man-made pit lakes and euxinic marine lakes, and in freshwater as
well as hypersaline lakes. In the final chapter the editors provide
a synthesis of the topic and conclude that the study of meromictic
lakes also offers new insights into the limnology of inland lakes.
The book appeals to researchers in the fields of ecology,
limnology, environmental physics and biophysics.
This volume presents recent advances in the research on meromictic
lakes and a state-of-the art overview of this area. After an
introduction to the terminology and geographic distribution of
meromictic lakes, three concise chapters describe their physical,
chemical and biological features. The following eight chapters
present case studies of more than a dozen meromictic lakes, showing
the variety of physical and biochemical processes that promote
meromixis. The result is a broad picture of the ecology and
biochemistry of meromictic lakes in tropical and cold regions, in
man-made pit lakes and euxinic marine lakes, and in freshwater as
well as hypersaline lakes. In the final chapter the editors provide
a synthesis of the topic and conclude that the study of meromictic
lakes also offers new insights into the limnology of inland lakes.
The book appeals to researchers in the fields of ecology,
limnology, environmental physics and biophysics.
The Netherlands, like the other industrialized countries in the
northern hemisphere, is faced with increas ing environmental pro
blems. Being a country rich in water - at least in terms of surface
area - and low-lying, problems related to water are as old as the
nation itself. The problems in regard to water quality are becoming
more acute and complicated due to the progressive rise in air and
ground pollution. Glaring examples are the acid rains and
contamination of ground-water resources by toxic, and often
illegal, waste dumps. Being a delta country, the Netherlands is
also very vulnerable to pollution from the.water sources outside
the country's national boundaries, i.e. the rivers Rhine, Meuse and
ScheIdt. Not only the national but also the international
authorities are active in developing measures to both prevent and
combat water pollution, and to restore as far as possible the
natural balance or a 'reasonable' water quality. The pollution
abatement programmes are based on ecological theories; accepting
waterbodies as aquatic ecosystems, the authorities concerned try to
influence and lead the progresses in the systems to reach or
maintain the desired ecosystem structure. Suter II (1981) mentioned
a number of reasons why the attempts to use ecosystem theories to
assess the impacts on the environment have been disappointing to
date. It is clear that one of the reasons for the failure is lack
of proper knowledge."
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.
Numerous successful projects are mentioned. In general ecological
restoration endeavours greatly benefit from the progressive
experience achieved in the course of the years. Failures mainly
occur through insufficient application of physical, chemical or
ecological principles. Spontaneous colonization by plants and
animals, following habitat reconstruction, is preferred. However,
sometimes the re-introduction of keystone species (e.g. eelgrass,
salmon, beaver) is necessary in case the potential habitats are
isolated or fragmented, or if a seed bank is lacking, thus not
allowing viable populations to develop. Re-introducing traditional
management techniques (e.g. mowing without fertilization, low
intensity grazing) is important to rehabilitate the semi-natural
and cultural landscapes that are so characteristic for The
Netherlands.
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Biomanipulation Tool for Water Management - Proceedings of an International Conference held in Amsterdam, The Netherlands, 8-11 August, 1989 (Hardcover, Reprinted from HYDROBIOLOGIA, 200/201, 1990)
Ramesh D. Gulati, E.H.R.R. Lammens, M.L. Meyer, E. Van Donk
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R8,928
Discovery Miles 89 280
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Ships in 10 - 15 working days
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The Netherlands, like the other industrialized countries in the
northern hemisphere, is faced with increas ing environmental pro
blems. Being a country rich in water - at least in terms of surface
area - and low-lying, problems related to water are as old as the
nation itself. The problems in regard to water quality are becoming
more acute and complicated due to the progressive rise in air and
ground pollution. Glaring examples are the acid rains and
contamination of ground-water resources by toxic, and often
illegal, waste dumps. Being a delta country, the Netherlands is
also very vulnerable to pollution from the*water sources outside
the country's national boundaries, i.e. the rivers Rhine, Meuse and
ScheIdt. Not only the national but also the international
authorities are active in developing measures to both prevent and
combat water pollution, and to restore as far as possible the
natural balance or a 'reasonable' water quality. The pollution
abatement programmes are based on ecological theories; accepting
waterbodies as aquatic ecosystems, the authorities concerned try to
influence and lead the progresses in the systems to reach or
maintain the desired ecosystem structure. Suter II (1981) mentioned
a number of reasons why the attempts to use ecosystem theories to
assess the impacts on the environment have been disappointing to
date. It is clear that one of the reasons for the failure is lack
of proper knowledge.
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.
Numerous successful projects are mentioned. In general ecological
restoration endeavours greatly benefit from the progressive
experience achieved in the course of the years. Failures mainly
occur through insufficient application of physical, chemical or
ecological principles. Spontaneous colonization by plants and
animals, following habitat reconstruction, is preferred. However,
sometimes the re-introduction of keystone species (for example,
eelgrass, salmon, beaver) is necessary in case the potential
habitats are isolated or fragmented, or if a seed bank is lacking,
thus not allowing viable populations to develop. Re-introducing of
traditional management techniques (for example, mowing without
fertilization, low intensity grazing) is important to rehabilitate
the semi-natural and cultural landscapes that are so characteristic
of The Netherlands.
This volume is a record of the proceedings of the IXth
International Rotifer Symposium, which was held in Khon Kaen,
Thailand, on January 16-23, 2000. It contains reviews and research
papers dealing with diverse aspects of scientific research related
to Rotifera and their ecology. Some of the topics addressed are:
taxonomy and zoogeography, ecology, phylogeny and evolution,
physiology, biochemistry and population genetics, aquaculture, and
ecotoxicology. This book contains a compilation of contemporary
rotifer-related research, and is the eighth of a series of rotifer
symposium proceedings published in "Developments of Hydrobiology".
This update of Rotifera studies should be of great interest to
invertebrate zoologists, hydrobiologists, ecologists, and
aquaculturists, particularly those interested in freshwater
habitats.
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