The Influence of Gear – Vessel Combination on Artisanal Fishery Catch Composition: A Case Study of Kigamboni Municipal Coastal Area.

Buberwa, Evodius Alfred (2022) The Influence of Gear – Vessel Combination on Artisanal Fishery Catch Composition: A Case Study of Kigamboni Municipal Coastal Area. Masters thesis, The Open University of Tanzania.

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Abstract

The study assessed the influence of gear-vessel combination on catch composition in artisanal fishery, which is characteristically multi-specie and multi-gear. Such complexity comes with major issues in managerial perspective. The study used secondary data recorded within twelve months (Feb 2020 to Feb 2021) from two landing sites (Mjimwema, and Buyuni). The study found prevalence Mean Trophic Level (MTL) of 3.8 that suggested possible trophic cascades when related to other studies conducted in the western Indian Ocean. ANOSIM and PERMANOVA significant results (p ˂ 0.05) suggested difference in catch composition. Location was also found to influence catch composition of Artisanal fisheries at the coast of Kigamboni Municipal. However in this study some limitations were observed in the analysis of seasonality carried by the use of ANOVA, one outliers were observed through the stem- and- leaf diagram, also Leven’s test of homogeneity of variance was found to be significant, moreover due to lack of sufficient data, Kimbiji was removed from the study hence narrowed the research area. Nevertheless the study concluded that catch composition is attributable to the use of different combination of fishing gear and vessels also the denuded assemblage of fish communities observed in the secondary data with a lot of zeros can be attributable to excessive fishing pressure exerted in the coral reef fish species. The study recommends TAFIRI, should emphasize and put up supportive infrastructures to private organization interested in conducting fisheries research; whereas suggested areas for further research include studies on environmental gradients that can also influence the catch composition together with documenting and understanding the mean trophic level (MTL) trend of Kigamboni artisanal fisheries. Keywords: Catch composition, Mean Trophic Level, Artisavnal Fisheries and Gear-vessel

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