COSTECH Integrated Repository

Ulva reticulata and Gracilaria crassa: Macroalgae That Can Biofilter Effluent from Tidal Fishponds in Tanzania

Show simple item record

dc.creator Msuya, Flower E.
dc.creator Neori, Amir
dc.date 2016-02-16T15:24:11Z
dc.date 2016-02-16T15:24:11Z
dc.date 2002
dc.date.accessioned 2018-04-18T11:49:46Z
dc.date.available 2018-04-18T11:49:46Z
dc.identifier Msuya F.E. and Neori A. 2002. Ulva reticulata and Gracilaria crassa: macroalgae that can biofilter effluent from tidal fishponds in Tanzania. Western Indian Ocean Journal of Marine Science, 1: 117–12.
dc.identifier http://hdl.handle.net/123456789/408
dc.identifier.uri http://hdl.handle.net/123456789/10135
dc.description Macroalgae (seaweed) can be cultured effectively for the production of useful algal biomass and removal of nutrients from fishpond effluents. A land-based, tide/gravity-driven flow-through, fish-macroalgae integrated system was studied at Makoba Bay, Zanzibar, Tanzania, during May–October, 2000. Rectangular cages made of 1-inch mesh netting were constructed in channels that received the outflows of the fishponds. Four species of macroalgae were planted in the cages and compared for their usefulness as biofilters. Gracilaria crassa and Ulva reticulata grew at average rates of 1.5 and 1.2 %, respectively. Both species removed nitrogen as seaweed protein at rates of up to 0.4 g N/m2/d. The algal biomass produced was of good quality with protein dry weight contents of 13% for G. crassa and 26 % for U. reticulata. The biofilters also raised the pH values of the fishpond effluents and oxygenated the water. In contrast to Ulva and Gracilaria, species of Eucheuma and Chaetomorpha performed poorly in the fishpond effluents.
dc.language en
dc.publisher Western Indian Ocean Marine Science Association
dc.subject macroalgal biofilters
dc.subject seaweed
dc.subject yield
dc.subject protein content
dc.subject integrated mariculture
dc.subject nutrients
dc.subject eutrophication
dc.subject sustainable development
dc.title Ulva reticulata and Gracilaria crassa: Macroalgae That Can Biofilter Effluent from Tidal Fishponds in Tanzania
dc.type Journal Article, Peer Reviewed


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search COSTECH


Advanced Search

Browse

My Account