{"refrec":{"BRefID":335934,"RR":"<b>Brinkhuis, B.H.</b> (1977). Seasonal variations in salt-march macroalgae photosynthesis. II. <i>Fucus vesiculosus</i> and <i>Ulva lactuca</i>. <i>Mar. Biol. (Berl.) 44(2)</i>: 177-186. <a href=\"https://dx.doi.org/10.1007/bf00386957\" target=\"_blank\">https://dx.doi.org/10.1007/bf00386957</a>","BEntID":332556,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Biol. (Berl.) 44(2)</i>: 177-186. <a href=\"https://dx.doi.org/10.1007/bf00386957\" target=\"_blank\">https://dx.doi.org/10.1007/bf00386957</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Brinkhuis, B.H.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Brinkhuis, B.H.","Englishabstract":"Photosynthesis in whole plants of the salt-marsh algae <i>Fucus vesiculosus</i> and <i>Ulva lactuca</i> was evaluated by <sup>14</sup>C-uptake under a variety of light intensities at approximately mately monthly intervals during a 15-month study. Photosynthetic capacity in both species was closely related to seasonal irradiation patterns and changes in field biomass. Maximum photosynthesis occurred in the spring and summer months. Photosynthesis on a dry weight basis was higher in <i>U. lactuca</i>, while photosynthesis on a chlorophyll a basis was equal in both species. Photosynthetic capacity was inversely related to pigment content. Maximum chlorophyll a concentrations occurred during the winter. Frond profile studies in <i>F. vesiculosus</i> indicated that apices always exhibited greatest photosynthetic capacity. Uptake of <sup>14</sup>C into ethanol-soluble and insoluble fractions was different in each species. <i>F. vesiculosus</i> showed greater activity in the ethanol-soluble fraction while <i>U. lactuca</i> exhibited greater activity in ethanol-insoluble fractions.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Seasonal variations in salt-march macroalgae photosynthesis. 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