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Titlebook: Studies on Lake Vechten and Tjeukemeer, The Netherlands; 25th anniversary of R. D. Gulati,Dr S. Parma (Director) Book 1982 Dr W. Junk Publ

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书目名称Studies on Lake Vechten and Tjeukemeer, The Netherlands
副标题25th anniversary of
编辑R. D. Gulati,Dr S. Parma (Director)
视频video
丛书名称Developments in Hydrobiology
图书封面Titlebook: Studies on Lake Vechten and Tjeukemeer, The Netherlands; 25th anniversary of  R. D. Gulati,Dr S. Parma (Director) Book 1982 Dr W. Junk Publ
描述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. Su
出版日期Book 1982
关键词ecosystem; environment; macrophytes; phytoplankton; plankton; zooplankton
版次1
doihttps://doi.org/10.1007/978-94-009-8015-0
isbn_softcover978-94-009-8017-4
isbn_ebook978-94-009-8015-0
copyrightDr W. Junk Publishers, The Hague 1982
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Contribution of photosynthetic sulphur bacteria to primary production in Lake Vechten area of 4.7 ha, a maximum depth of 11.9 m and a mean depth of 6 m..Bacterial populations, appearing at the boundary layer of the oxidative and reductive zone from early June till late October, were composed of cyanobacteria, Chromatiaceae and green and brown coloured Chlorobiaceae. Predominating ge
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Structural and functional characteristics of epiphyton and epipelon in relation to their distributioerlands). On a weight basis, epiphyton was maximal in autumn and epipelon in summer. In winter the chemical composition of epiphyton and epipelon was similar. In summer the epiphyton had on a unit weight basis more organic matter and carbonate, and had per unit organic matter a higher algal number,
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The zooplankton: its community structure, food and feeding, and role in the ecosystem of Lake Vechteo the functioning of the lake’s ecosystem. The .C-technique used in the grazing and assimilation study is discussed in detail with a critical analysis of the methodological errors..The three major species which contributed to the annual density, biomass and grazing maxima in spring are: .. and .. Th
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ng 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
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Book 1982ry 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 rain
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