Betty’s Bay collections

Thomas Wernberg and Ross Coppin.
Thomas Wernberg and Ross Coppin.

Two beds were sampled in Betty’s:

GPS coordinates, Site 1: Syy.yyyyy° Exx.xxxxx°

Divers visited this site on 31 May 2015, and the dive for kelp collections was from 10:25 to 10:55. This site is situated at a depth of 8 m and Laminaria and Ecklonia were collected (Laminaria does not occur at shallower depths here). The bottom topography is rocky with large boulders. The boulders have dense beds of Ecklonia on top and on the sides with no Laminaria occurring within these beds. Laminaria occur either at the fringes of these beds or as their own small clumps on smaller boulders and rocks. There is sand between the boulders and rocks.



Betty's Bay in the mist.
Betty’s Bay in the mist.

GPS coordinates, Site 2: Syy.yyyyy° Exx.xxxxx°

The next day (1 April 2015), the site was visited again and a reef at 6 m was chosen for the collection of Ecklonia only – this was done to ensure that the depth was commensurate with the collections in False Bay, which are all at a depth of 6 m. The bottom is relatively flat, for a kelp reef, with very few large boulders. The rocky bottom is mostly covered with crusting coralline, sponges or light folios algae. Sandy gullies occur between the rocky kelp beds and tend to be 1 or 2 metres deeper. The overall depth gradually increases away from shore.

The Betty’s Bay collections on 31 May and 1 April 2015 coincided with Ross Coppin’s set-up and sampling of the kelp beds for his MSc.

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