E3S Web Conf.
Volume 147, 2020The 3rd International Symposium on Marine and Fisheries Research (3rd ISMFR)
|Number of page(s)||9|
|Published online||10 February 2020|
Effect of Depth on the Growth and Carrageenan Content of Seaweed Kappaphycus alvarezii Cultivated Using Verticulture Method
Seaweed Cultivation Research Center, 96265 Boalemo Regency, Gorontalo Province, Indonesia
* Corresponding author: firstname.lastname@example.org
Seaweed of Kappaphycus alvarezii is generally cultivated by the long line method through the water surface. The verticulture method might be an alternative method by using water column. This research aimed to evaluate the effects of depth on the growth and carrageenan content of K. alvarezii which was cultivated vertically. Cultivation was carried out in the floating raft (10 x 10 m)2 contained of 36 vertical nets. The size of each net was 5 x 2 m2 whereas the depth was 0.2, 1, 2, 3, 4, and 5 m. Seaweed seedlings of 50 g was each tied to the vertical nets; the distance between the knot was 20 cm. The results showed that the depth was significantly different to the daily growth rate of K. alvarezii (p<0.05) but did not affect carrageenan content (p>0.05). Therefore, this method might be applied as an alternative method to optimally increase seaweed production in narrow area without affecting seaweed quality.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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