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On the morphology and karyology of the genus <i>Archilopsis</i> (Meixner) (Platyhelminthes, Proseriata) OMA
Martens, P.M.; Curini-Galletti, M.C.; Puccinelli, I..
Two new <i>Archilopsis</i> species are described: <i>Archilopsis marifuga</i> sp. n. and <i>Archilopsis arenaria</i> sp. n.; <i>Archilopsis unipunctata</i> (Fabricius, 1826) and <i>Archilopsis spinosa</i> (Jensen, 1878) are redescribed. The latter taxon is re-established. The descriptions are based on morphological and karyological data. The four species of the genus can unequivocally be recognized by the morphology of the cirrus and the presence or absence of a stylet.The genus <i>Archilopsis</i> is regarded as a monophyletic group with at least two autapomorphies. The relationship between the four species is discussed and a cladogram for the genus proposed. The existence of two...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Karyology Phylogeny Archilopsis Platyhelminthes Proseriata ANE; Belgium; Belgian Coast ANE; Belgium; Zwin ANE; France; North ANE; Netherlands; Dutch Coast Belgium; Het Zwin natuurreservaat.
Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3186
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Contribution à la connaissance du phytoplankton de l'Atlantique nord-est et de la Mer du Nord OMA
Louis, A.; Clarysse, R..
This study shows that the principal ecological factors influencing the studied area are light, determined by very unequal day lengths, the wind, provoking a fairly homogenically mixed layer of microscopic organisms, and water depth, which in correlation with the proximity of the coast line determined the nutrient salinity concentration. The floral study allowed the determination of algal concentration in the different zones during different periods of the year, and also the quantitative and qualitative photosynthetic activity fluctuations of several florules. The study also resulted in a zonal and chronological delimitation of a large number of species of the studied area. The degressive lists, based on the mean algal frequency, showed the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phytoplankton ANE; Belgium; Zwin ANE; North Sea Belgium; Het Zwin natuurreservaat.
Ano: 1971 URL: http://www.vliz.be/imisdocs/publications/341463.pdf
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