Selection of mangrove species for shrimp based silvo-aquaculture in the coastal areas of Bangladesh
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Selection of mangrove species for shrimp based silvo-aquaculture in the coastal areas of Bangladesh Khandkar- Siddikur Rahman 1 & Md Nazrul Islam 2 Nazmul Ahsan 4
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& Moin Uddin Ahmed & Roel H. Bosma & Adolphe O. Debrot & Md.
Received: 1 June 2019 / Revised: 21 July 2020 / Accepted: 24 July 2020 # Springer Nature B.V. 2020
Abstract The purpose of this work was to assemble information with which to help identify and select mangrove species most likely to be useful and locally acceptable for use in transforming the dominant current non-mangrove shrimp culture practice in Bangladesh towards more sustainable shrimp silvo-aquaculture in the coastal regions of the country. We reviewed current mangrove use in the extensive aquaculture setting, compiled published evidence on mangrove properties and characteristics that influence their suitability for such use and assessed farmer preferences of the various species. Thirteen mangrove species (all of which are available in Bangladesh) were documented as being used in silvo-aquaculture system in the tropics. Followed by these already “established” mangrove species, Aegialitis rotundifolia, Heritiera fomes and Lumnitzera racemosa could be enlisted as additional “optional” mangrove species to consider, while Ceriops decandra, Excocaria agallocha and Phoenix paludosa were found to be unsuitable for silvo-aquaculture. Based on their experience and indigenous knowledge on mangroves, shrimp farmers ranked (in declining order of preference) Sonneratia apetala, S. caseolaris, Avicennia officinalis, Nypa fruticans, Bruguiera sexangula, Heritiera fomes, and also, the mangrove-associate wild rice species Oryza coarctata as the most suitable species to be used for promoting silvo-aquaculture in the coastal areas of Bangladesh. Thus, the focus group interviews with the farmers not only identified which mangroves enjoy most local support for use in transforming current shrimp culture towards more sustainable shrimp silvo-aquaculture but also provided additional leads for species interesting to further investigation into their suitability for silvo-aquaculture. Keywords Mangroves . Shrimp . Silvo-aquaculture . Sustainable transformation . Coastal Bangladesh
Introduction In the tropics, shrimp farming is expected to contribute to the local economy, but the promotion of export-oriented production, mostly in the hands of big corporations, can have detrimental consequences to the livelihoods of local populations and the environment (Rivera-Ferre 2009). According to FAO-FIGIS (2013), over 50% of the global shrimp for consumption is still
* Md Nazrul Islam [email protected] 1
Solidaridad Network Asia, Dhaka-1209, Bangladesh
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Forestry and Wood Technology Discipline, Life Science School, Khulna University, Khulna-9208, Bangladesh
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Wageningen Marine Research, Wageningen University & Research, PO Box 57 1780AB DEN HELDER, The Netherlands
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Fisheries and Marine Resources Technology Discipline Life Science School, Khulna University, Khulna - 9208, Bangladesh
obtained from shrimp f
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