Ecological assessment of Dutch inland waters: Philosophy and preliminary results

Roos, C.; Gardeniers, J.J.P.; Roijackers, R.M.M.; Peeters, E.T.H.M.

doi:10.1080/03680770.1989.11899903

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Sampling, slide preparation, identification and counting are decribed in more detail by Maasdam et al (1992). In general nomenclature according to Krammer & Lange-Bertalot (1986-1991 is followed .…”

Section: Study Areamentioning

confidence: 99%

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Perspectives for the use of diatom assemblages in the water management policy of Overijssel (The Netherlands)

Cate¹,

Maasdam

Roijackers

1993

Hydrobiologia

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Diatoms have been sampled in several types of water bodies in the province of Overijssel for a period of five years . Samples from 333 sites were examined both in spring and autumn . Extensive analysis of physico-chemical variables was carried out .Data were processed by multivariate analysis for detecting correlations between species and environmental factors . Both ordination and clustering techniques were used . Statistical tests were performed to evaluate environmental relationships .The main factors in this study appear to be pH, nutrient pollution (saprobity and trophic degree) and alkalinity . Within the group of waters which is not influenced by extreme conditions of pH or pollution, there is a discrepancy between waters with low and high alkalinity .The present study confirms that diatoms are useful indicators of pollution and pH, as well documented by several authors . Diatoms are also suitable as biological indicators for alkalinity at least on a regional scale . This offers possibilities for the use of diatoms in monitoring studies, especially in waters that are still under relatively low environmental stress . It also offers opportunities for setting ecological standards, based on the characteristics of non-polluted water bodies . This aspect will be of interest to the water management policy in the province of Overijssel .

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Section: Study Areamentioning

confidence: 99%

“…This involves biological, physical and chemical, as well as management components (Roos et al ., 1991). In 1980 the province of Overijssel started an investigation of surface waters .…”

Section: Introductionmentioning

confidence: 99%

Perspectives for the use of diatom assemblages in the water management policy of Overijssel (The Netherlands)

Cate¹,

Maasdam

Roijackers

1993

Hydrobiologia

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“…In 1989, the Dutch Foundation for Applied Waste Water Research (STOWA) initiated a national programme to develop methods for the ecological assessment of the main types of inland waters, among which were shallow lakes (ROOS et al, 1991 ). The project on shallow lakes covered aspects of lake management, biology, physics, chemistry and other environmental aspects such as soil type and landuse.…”

Section: Introductionmentioning

confidence: 99%

The trophic state of shallow lakes in The Netherlands

Roijackers¹,

Joosten²

1996

Netherlands Journal of Aquatic Ecology

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A study has been carried out on the development of an ecological assessment method for shallow lakes in The Netherlands. Analyses of eutrophication characteristics of 93 lakes with, in total, 127 sampling localities gave insight into some of the steering variables, such as total-P, total-N, chlorophyll-a and transparency. On the basis of phytoplankton species composition, three main groups of lakes could be distinguished. The first group, characterized by persistent filamentous Cyanobacteria, had the highest summer means of chlorophyll-a and totaI-P. The second group was characterized by non-persistent filamentous Cyanobacteria, occurring in low abundancies, and at lower chlorophyll-a and totaI-P concentrations. The third group of lakes was characterized by the absence or very low abundance of the filamentous Cyanobacteria. As a result of these analyses, criteria for the abatement of eutrophication in shallow lakes could be refined.

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Ecologically based standards for nutrients in streams and ditches in The Netherlands

Peeters

Gardeniers

1998

Water Science and Technology

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Ecological assessment of Dutch inland waters: Philosophy and preliminary results

Cited by 3 publications

References 2 publications

Perspectives for the use of diatom assemblages in the water management policy of Overijssel (The Netherlands)

Perspectives for the use of diatom assemblages in the water management policy of Overijssel (The Netherlands)

The trophic state of shallow lakes in The Netherlands

Ecologically based standards for nutrients in streams and ditches in The Netherlands

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