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Vertical distribution of meiofauna and the efficiency of the Van Veen grab on sandy bottoms in lake Grevelingen (the Netherlands) OMA
Heip, C.H.R.; Willems, K.A.; Goossens, A..
Comparison of density estimates of Nematoda and Harpacticoida obtained by a Van Veen grab and SCUBA diving from a sandy sediment in shallow water shows that Harpacticoida are sampled efficiently with the grab but Nematoda are not. For the Nematoda, total density is underestimated and the relative abundance of surface-dwellers is overestimated. Samples obtained with a Van Veen grab from which the material is collected in a bucket and subsampled afterwards have a much smaller statistical variability than samples obtained with other methods.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bottom sampling Meiofauna Vertical distribution ANE; Netherlands; Grevelingen L..
Ano: 1977 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3570
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Functional genomic approaches to study and engineer secondary metabolism in plant cell cultures Frontis
Terryn, N.; Van Montagu, M.; Inzé, D.; Goossens, A..
Plants produce a wide range of secondary compounds, also referred to as natural products, which may have important functions in the plants adaptation to specific ecological niches or its responses to biotic and abiotic stresses. Some of these secondary metabolites turn out to be beneficial for humans as pharmaceuticals. Because of their unique and often complex chemical structures, synthesis of these natural compounds is frequently unfeasible or not economically justified. Therefore, many secondary metabolites are still extracted from whole plants. However, they are often produced only in certain tissues, at specific developmental stages or they are present in low concentrations. The possibility of growing medicinal plants, either as a whole, or as a...
Tipo: Conference proceedings
Ano: 2006 URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1240
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