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Liming of Acidified Surface Waters
Acidification is one of the most serious environmental problems - especially in Sweden, which suffers most from the consequences of acid rain. Besides international negotiations to reduce sulphur emissions - 85% of the acid load on Sweden can be traced to emissions from outside the country itself - the Swedish Government has employed large-scale, operative liming activities to counteract acidification of surface waters. The scientific results show that - although acidification cannot be solved by liming alone - the measures taken resulted in substantial improvements to around 8,000 Swedish lakes and watercourses. The idea is that other countries affected by acidification may also profit from this experience.
Ecosystem Classification for Environmental Management
When Lovelock published his 'Gaia', it was for many people quite a relief. We would not be able to destroy life on earth. Lovelock illustrated this argument with a wealth of mechanistic feedback processes, as we know them to occur in ecosystems. These feedback processes would, somehow, lead the earth as a whole into a new equilibrium. An equilibrium with life within, be it in an entirely changed environment. This is, indeed, let us be earnest: a functioning ecosystem. But what kind of ecosystem? The Gaia-hypothesis triggered a great deal of thought and discussion about what we actually require as an environment. Bio diversity as an abbreviation of biotic diversity has since become the focal ...
Managing a Material World
As we reach the end of the 20th century, the question of how to meet human needs and preferences while safeguarding the global environment is a major concern facing humanity. This book reflects the state of the art of thinking on the necessary concepts, tools and instruments that are likely to help producers, consumers and governments to adjust their policies and practices. It covers theories and concepts, practical approaches and visions of industry and government. The book has been written by a team of authors that includes the most forward thinking researchers and managers on the issue. It is a handbook for all those involved in decisions about product design and eco-efficiency, about environment and resource use policies. Moreover it can serve as a handbook for all those who are studying with the aim to become involved in such issues.
Acid Rain - Deposition to Recovery
This book looks at the sources and composition of the atmosphere and rainfall, with particular attention on acidifying components and those that affect ecosystems. It further widens the subject to look at trace metals. It includes papers on the impact of deposition on soils and forests and the recovery of the natural environment. Work on critical loads makes a contribution to understanding the degree to which deposition must be reduced to limit its impact.
Ecological Restoration of Aquatic and Semi-Aquatic Ecosystems in the Netherlands (NW Europe)
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.
