Drivers of adoption for integrated mangrove aquaculture: Its application for extensive smallholder shrimp farmers in Bangladesh

Abstract

Integrated Mangrove Aquaculture (IMA) has the potential to simultaneously address the challenges of environmental degradation arising from conventional shrimp production, the expected impacts of climate change, and the growing global demand for shrimp. These challenges affect coastal livelihoods in Satkhira and Khulna districts of Bangladesh. However, IMA adoption in coastal Bangladesh so far remains low. This study explores the factors that influence IMA adoption by extensive smallholder shrimp farmers in Bangladesh using a questionnaire-based survey of 128 farmers. We identified potential drivers of adoption by combining exploratory data analysis and a logit regression analysis. Key findings were that lack of adoption appeared to be mainly attributed to a lack of awareness of IMA (65% of non-adopters were not aware of the existence of IMA), as well as a lack of trust in own required management skills and technical know-how. On the other hand, positive evaluation of IMA benefits and its main use as a risk mitigating strategy were the main enablers. The logit regression analysis indicated that perceived suitability of the pond to integrate IMA and availability of technical assistance were the factors most important to adoption, explaining respectively 30% and 26% of adoption. To enhance adoption of IMA and reduce the need for new pond excavation in mangrove stands, tailored technical training and social learning opportunities are required to increase awareness of IMA and its potential benefits, as well as for effective IMA management. Additionally, the development of new market opportunities for novel mangrove products is vital to foster incentives for adoption. Further work is needed on how to maximize the potential of IMA by thorough study of its various implementation options.