caa a22 4500 475783891 CHVBK 20180406123652.0 cr unu---uuuuu 170329e20001001xx s 000 0 eng 10.1023/A:1008106723185 doi (NATIONALLICENCE)springer-10.1023/A:1008106723185 Variations in the alginate content and composition of Durvillaea antarctica and D. willana from southern New Zealand [Elektronische Daten] [Brent Kelly, Murray Brown] The brown seaweeds Durvillaea antarctica andD. willana are dominant components of the lowerlittoral and upper sublittoral of exposed rocky shoresin southern New Zealand. Tissue samples of bothspecies, harvested from a site on the south-east coastof South Island over a period of 2 years, wereanalysed for alginate content and composition.Individuals of both species were further separatedinto different blade (lamina and palm) and stipe(cortex and medulla) fractions to assess variationwithin the thallus. On average the alginate contentand frequency of mannuronic acid (Fm) was higherin D. antarctica than in D. willana. Blades contained more alginate than stipes, laminaeand stipes were rich in mannuronic acid whereasholdfasts were rich in guluronic acid. Variations incomposition are considered to reflect the functionaldifferences of the tissue, giving flexibility to bladeand stipe and rigidity to the holdfast. Despitefluctuations in content and composition betweencollection times no seasonal trends in eithercomponent were apparent. Kluwer Academic Publishers, 2000 alginate content nationallicence alginate composition nationallicence Durvillaea antarctica nationallicence D. willana nationallicence New Zealand nationallicence Kelly Brent The Martin Ryan Marine Science Institute, National University of Ireland, Galway, Ireland aut Brown Murray Department of Biological Sciences, University of Plymouth, PL4 8AA, Plymouth, UK aut Journal of Applied Phycology Kluwer Academic Publishers 12/3-5(2000-10-01), 317-324 0921-8971 12:3-5<317 2000 12 10811 https://doi.org/10.1023/A:1008106723185 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008106723185 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kelly Brent The Martin Ryan Marine Science Institute, National University of Ireland, Galway, Ireland aut NATIONALLICENCE 700 1- Brown Murray Department of Biological Sciences, University of Plymouth, PL4 8AA, Plymouth, UK aut NATIONALLICENCE 773 0- Journal of Applied Phycology Kluwer Academic Publishers 12/3-5(2000-10-01), 317-324 0921-8971 12:3-5<317 2000 12 10811 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer