Produção, expansão temporal e impactos econômicos e sociais do cultivo das macroalgas econômicas euchewna denticulatum e Kappaphycus alvarezii na província de Cabo Delgado

Abstract

The present research work was carried out in Cabo Delgado, in the district of Mecúfi in the administrative post of Murrébué (Zaulane and Secura); in the district of Pemba (Chuiba) and in the district of Macomia (Goludo and Messano) from June 2004 to March 2005. In Cabo Delgado, the species Eucheuma denticulatum and Kappaphycus alvarezii are commercially cultivated since 1999 for export, An annual average 3246 tons of dry macroalgae were exported in the period 1999-2004 and another about 3000-5000 tons were exported in the experimental phase of cultivation that took place between 1995-1997. About 3558 people were involved in this activity, of which 67% were female. Algae cultivation has taken on an important role in promoting the local economy and in the survival of the population as it constitutes an additional source of income for the population; estimated income between 60000-1100000 MT per month per family. The temporal evolution (1999-2004) of the cultivation activity progressed to a maximum total of 50,313 plots, corresponding to an area of ​​372.62 hectares. This corresponded to a use of 82.8 %_ of the estimated total area for the cultivation of macroalgae in Cabo Delgado. The “ice-ice” disease in cultivated macroalgae as well as epiphytism and herbivory affected their productivity over the years