Author: Ramesh D. Gulati
Publisher: Springer Science & Business Media
ISBN: 9400980159
Category : Science
Languages : en
Pages : 380
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Book Description
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.
Author: Louis van Liere
Publisher: Springer Science & Business Media
ISBN: 9401124329
Category : Science
Languages : en
Pages : 294
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Proceedings of a Conference held in Amsterdam, The Netherlands, 18-19 April, 1991
Author: P.H. Nienhuis
Publisher: Springer Science & Business Media
ISBN: 9401713359
Category : Science
Languages : en
Pages : 239
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Book Description
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.
Author: E.P.H. Best
Publisher: Springer Science & Business Media
ISBN: 940096322X
Category : Science
Languages : en
Pages : 218
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Book Description
Papers presented at a Symposium held in Utrecht, The Netherlands, October 1982
Author: Robert J. Naiman
Publisher: Bernan Press(PA)
ISBN: 9789231026683
Category : Science
Languages : en
Pages : 336
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Author: W. Vervoort
Publisher: BRILL
ISBN: 9789004087811
Category : Reference
Languages : en
Pages : 486
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Author: T. Berman
Publisher: Springer Science & Business Media
ISBN: 9401128057
Category : Science
Languages : en
Pages : 206
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Author: John Gilbert
Publisher: Springer Science & Business Media
ISBN: 9401116067
Category : Science
Languages : en
Pages : 576
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As in previous symposia, some current research topics were selected for review and eight invited papers were presented. For the first time a paper was presented on the historical aspects of Rotiferology, covering European research between 1680-1950. A special workshop session was devoted to a debate on a controversial topic: Rotifer Phylogeny. The workshop resulted in a very successful discussion and the integration of scattered evidence and hypotheses on the phylogenetic origin of rotifers, the relationships between major rotifer groups, and the mechanisms of evolution.
Author: Koninklijke Nederlandse Akademie van Wetenschappen
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 396
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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 812
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