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Image analysis as a tool for measuring particulate matter concentrations and gut content, body size, and clearance rates of estuarine copepods: validation and application OMA
Billiones, R.G.; Tackx, M.L.M.; Flachier, A.T.; Zhu, L.; Daro, M.H..
The performance of image analysis in measuring suspended particulate matter concentrations was compared with that of the Coulter counter in different samples including latex spheres, diatoms and natural estuarine waters. The two techniques gave comparable numerical concentrations. Image analysis results also correlated positively with dry weight measurements of estuarine suspended particulate matter samples. The conversion of particle areas measured by image analysis into volumes was addressed by trying to determine the average height of the particles. This was done by plotting volume concentrations from the Coulter counter against area concentrations from image analysis. The resulting linear relationships were found to be significant in homogeneous...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Image analysis; Image analysis; Image analysis.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3992
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The geometric features, shape factors and fractal dimensions of suspended particulate matter in the Scheldt Estuary (Belgium) OMA
Billiones, R.G.; Tackx, M.L.; Daro, M.H..
Water samples from the Scheldt estuary were collected in three fractions: (a) unfiltered water, (b) water filtered through a 50 µm net and (c) water filtered through a 300 µm net. Particles easily recognisable from the majority of the amorphous particles were isolated and their geometric dimensions measured. From the measurements, shapefactors were calculated. Measurement of fractal dimensions was attempted. From the first fraction, the particles isolated and measured were circular and chained diatoms. In the second fraction, zooplankters were easily distinguishable and representatives of the three dominant groups (cladocerans, cyclopoids and calanoids) were measured. In the third fraction, detrital pieces from monocotyledon and dicotyledon plants were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Detritus Estuaries Fractals Fractals Fractals Particle size Sedimentation Suspended particulate matter Water sampling Zooplankton Bacillariophyceae [Featherlike diatoms] Calanoida Cladocera Cyclopoida Plantae [Plants] Belgium Belgium; Zeeschelde.
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3991
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