FAlTNA AND FLORA OF MANGROVE SWAMPS
115
FIG. 26. Avicennia ? m a r i m or A . ?eucalyptifolia a t Low Isles, Queensland. The appearance of these trees is characteristic of trees growing under the influence of strong
winds on the thin soil of coral reefs. (From a colour transparency, March 1962.)
has pointed out that avicennia seedlings die under the shade of their
parent and also that even old trees die when they are overtopped by
the rhizophora or bruguiera trees, for the development of which they
have acted as shading nurses.
Sa,plings may also be strangled by colonization of barnacles if these
are abundant locally.
Sapling development of this type would appear to influence
deposition-the substratum between the saplings is very soft.
This zone corresponds to the base of Watson’s class (ii) and upper
portion of his class (i).
F. Sonneratia zone
I n South East Asia Sonneratia griflthii and/or AS. alba, in Africa and
Australia S. alba alone and in India from Bombay to Burma S. apetala
115
FIG. 26. Avicennia ? m a r i m or A . ?eucalyptifolia a t Low Isles, Queensland. The appearance of these trees is characteristic of trees growing under the influence of strong
winds on the thin soil of coral reefs. (From a colour transparency, March 1962.)
has pointed out that avicennia seedlings die under the shade of their
parent and also that even old trees die when they are overtopped by
the rhizophora or bruguiera trees, for the development of which they
have acted as shading nurses.
Sa,plings may also be strangled by colonization of barnacles if these
are abundant locally.
Sapling development of this type would appear to influence
deposition-the substratum between the saplings is very soft.
This zone corresponds to the base of Watson’s class (ii) and upper
portion of his class (i).
F. Sonneratia zone
I n South East Asia Sonneratia griflthii and/or AS. alba, in Africa and
Australia S. alba alone and in India from Bombay to Burma S. apetala