A biological study of Durvillaea antarctica (Chamisso) Hariot and D ...

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islands.
On Kerguelen and Crozet Islands to the south and
southwest where D, antarctiaa grows, the laminarian does not occur.
4.7 OIAPTER SUMMARY
A variety of physical and biological factors controls the
distribution of Durvillaea spp. On a local scale, wave force and
the availability of a stable substratum appear to be of paramount
importance. Universally. it is unlikely that any single factor
determines the distribution pattern of Durvillaea. Sea sUrface
temperature, and the origin and direction of major currents are
probably most important. However, they fail to account for several
unusual features in distribution that are better explained by other
factors. Baardseth's statement (1941) that several factors control
the total geographical distribution of a marine alga applies to
DurviZZaea species, particularly to D. antarctica.