Khatlov: Functional Morphology of Macrophytes Botanica Marina Vol. XIX, pp. 335-339,1976 The Relationships Between Weight, Length, Age and Intensity of Photosynthesis and Organotrophy of Macrophytes in the Barents Sea K. M. Khailov The Institute ofthe Biology ofthe Southern Seas ofthe Ukrainian Academy of Sciences, Sevastopol, USSR. (Received 10. !. 76) For Ascophyllum nodosum, Fucus vesiculosus, Fucus inflatus and Rhodymenia palmata in the Barents Sea a quantitative description isgiven of the relationship between length (L) and weight (W) ofthe thallus, and for/4. nodosum also between weight (W) and age (7"). The weight of the thallus has also been related to the intensity of two physiological functions - photosynthesis (/*,·) and the consumption of organic substances (P0) dissolved in the water. According to the value of linear growth per unit of weight and the intensity of P,·, the different species form the series: Rhodymenia palmata > Fucus inflatus > Fucus vesiculosus > Ascophyllum nodosum, From the W-T relationship a lag phase ("early youth"), a logarithmic phase ("youth"), and the beginning of a stationary phase ("maturity") have been disclosed in the ontogenesis of A. nodosum. It has been shown that the photosynthesis and Organotrophy of the thallus diminish with the increase
Botanica Marina – de Gruyter
Published: Jan 1, 1976
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