Shrimp‐based livelihoods in mangrove silvo‐aquaculture farming systems
Tóm tắt
The paper reviews the following three types of mangrove‐shrimp systems: (i) integrated with canals between platforms planted with mangrove; (ii) associated having larger areas of water and a large mangrove area; and (iii) separated, with a dyke separating ponds from forest. The variations in shrimp yield of integrated and associated systems, that is, mixed systems, are attributable to water exchange, % water surface, primary production, stocking of post‐larvae, leaf litter fall and decomposition, species, cover and age of mangrove, and predators. Leaf litter from all mangrove species except Nipa palm adversely affect water quality. Leaf composition and decomposition rate vary between species; submersed leaves decompose faster. Low concentrations of decomposing leaves of certain species temporarily boosted shrimp growth. Shrimp yield has been found to be highest in ponds with 30–50% mangrove cover, but remained <400 kg ha−1 year−1, if not fed timber production peaked at 55% mangrove cover (about 10 m3 ha−1 year−1). Annual benefit–cost ratio was better in integrated systems than in associated systems, but one study found the reverse in a long‐term computation. An integrated mangrove‐shrimp farm of 4 ha may provide farmers with a decent livelihood in Vietnam, if contracts do not restrict recommended practices to keep water quality within the limits acceptable for shrimp. Separated systems, where mangroves are fully connected to open water, have more potential to contribute to ecological, economic and social sustainability. Enhancing the economic returns by capitalizing on ecosystem services through carbon credits and organic certification, will require support for initial investment and clustering of farms.
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Tài liệu tham khảo
AprianiS(2011)Social Economic Analysis of The Protection Mangroves Area with Sustainable Turnpangsari System (Case: RPH Chibuaya BKPH Cikiong KPH Purwakarta). MSc thesis (in Bahasa) Institute of Fisheries Bogor pp.88.
ASC(2014)Aquaculture Stewardship Council shrimp standard Version 1.0 March 2014. pp.144.
Bondad‐Reantaso MG, 2009, Measuring the Contribution of Small‐Scale Aquaculture: An Assessment, 180
Bosma RH, 2012, Financial Feasibility of Green‐water Shrimp Farming Associated with Mangrove Compared to Extensive Shrimp Culture in the Mahakam Delta, Indonesia, Asian Fisheries Science, 25, 258, 10.33997/j.afs.2012.25.3.004
Brown B, 2007, Resilience Thinking Applied to the Mangroves of Indonesia
Brown B, 2013, Mainstreaming Mangrove
Brown B, 2013, Fish Farmer Field School: towards healthier milkfish/shrimp polyculture and fish farmer empowerment in South Sulawesi, Aquaculture Asia, 18, 12
CaLB BrownSM GayM(2013)Green aquaculture in the mangrove: a case study in Kien Giang prov Vietnam. Presented at Asian Pacific Aquaculture 2013 held in HoChiMinh city 10‐13 Dec. 2013.
ChristensenB(1983)Management and utilisation of mangroves in Asia and the Pacific. FAO Environment Paper. An international journal of forestry and forest industries ‐ Vol. 35 – 1983. [Cited 17 January 2014]. Available from URL:http://www.fao.org/docrep/q1093e/q1093e01.htm
ChristensenSM(2003).Coastal Buffer and Conservation Zone Management in the Lower Mekong Delta Vietnam: Farming and Natural resources Economics. (PhD Thesis. The Royal Veterinary and Agriculture University).The Royal Veterinary and Agriculture University Copenhagen.
Clough B, 2002, Silvofishery Farming Systems in Ca Mau Province, Vietnam, 70
DebRoyP JayaramanR KrishnanM CriddleK(2013)Importance of Mangrove Conservation and valuation to women – a case study of Pichavaram Mangroves in India Presented at 4th Global Symposium on Gender in Aquaculture and Fisheries conference 1‐3 May 2013 in Yeosu Korea
DulyapurkV JumnongsongS(2009)Mangrove ecosystems communities and conflict: developing knowledge‐based approaches to reconcile multiple demands. The Bulletin on “Mangroves: Supporters of life” in Thailand Faculty of Fisheries Kasetsart University (KU) Bangkok Thailand (EU‐MANGROVE Project FP6‐003697).
ErftemeijerPLA LewisRR(1999)Planting mangrove on intertidal mudflats: Habitat restoration or habitat conversion?Presented at ECOTONE‐VIII seminar ‘Enhancing coastal Ecosystem restoration for the 21st century Ranong & Phuket 23–28 May 1999.
Gagauan AG, 1992, Rice‐Fish Research and Development in Asia, 217
Hossain S, 2004, Integrated management approach for shrimp culture in the coastal environment of Bangladesh, World Aquaculture, 35, 35
Hsu HC, 2000, Effect of temperature shifts on shrimp lightly infected with white spot syndrome virus (WSSV), Acta Zoology Taiwan, 11, 63
KurienJ(1997)State and shrimp: a preliminary analysis of the economic and ecological consequences of India's fishery policies. In: FAO Fisheries Report No. 572 Supplement. Papers presented at the FAO technical consultation on policies for sustainable shrimp culture. Bangkok Thailand 8‐11 December 1997. pp.235–255.
Lal PN, 1990, Conservation or Conversion of Mangroves in Fiji
Le BT, 2006, The Role of Mangrove and Coral Reefs Ecosystems in Natural Disaster Mitigation and Coastal Life Improvement, 145
McNallyR McEwinA HollandT(2011)The Potential for Mangrove Carbon Projects in Vietnam. [Cited 02 January 2014]. Available from URL:http://www.snvworld.org/en/sectors/redd/publications
Minh TH, 2001, Management of the Integrated Mangrove‐Aquaculture Farming Systems in the Mekong Delta of Vietnam, 24
NguyenVB(2000)Evaluation of coastal forest and fishery resources management strategies in Camau and Bentre Provinces in the Mekong Delta Vietnam. MSc thesis University of the Philippines Los Banos Laguna pp.241.
NguyenHT VõVT VõVH NguyenTB NguyenNS(2014)Current socio‐economic and environmental conditions of agroforestry system in Ca Mau province MDRI Cantho University ICRAF.
Oswin D, 2011, Recent Advances in Biodiversity of India, 103
Oswin SD, 2001, Integrated mangrove Shrimp Silvofisheries: a pioneer organic shrimp culture model in India, Aquaculture Asia, 4, 5
Phillips MJ, 1993, Environment and Aquaculture in Developing Countries, 171
PopulusJ RauxP MartinJ‐L AudaY(2004)Environmental sustainability of brackish‐water aquaculture in the Mekong delta – Vietnam. GAMBAS Vol. 2‐ Comprehensive report EC 99/362‐B7/6200.
Primavera JH, 1991, Intensive prawn farming in the Philippines: ecological, social and economic implications, Ambio, 20, 28
PrimaveraJH(2000)Integrated mangrove‐aquaculture systems in Asia. Integrated Coastal Zone Management Autumn Edition:121–130.
Primavera JH, 2007, Mangroves and shrimp pond culture effluents in Aklan, Panay Is., central Philippines, Bulletin of Marine Science, 80, 795
RiccioRW(2012)Is ecosystem‐based management necessary for adaptation to sea level rise in shrimp growing areas of the Mekong delta?MSc Thesis University of Washington pp.51.
Russi D, 2013, The Economics of Ecosystems and Biodiversity for Water and Wetlands
Sukardjo S, 1989, Tumpang sari pond as a multiple use concept to save the mangrove forest in Java, Biotrop Special Publication, 37, 115
Sukardjo S, 2010, The South China Seas Mangroves: Ecology, Social and Uses, Natural and Human Induces Stress Information's in Indonesia, 177
Suryadiputra N, 2001, Proceedings of International Workshop Optimizing Development and Environmental Issues at Coastal Area: Problems and Solutions for Sustainability of Mahakam Delta, 155
SuryaperdanaY(2011)The relationship of mangrove environment against shrimps and milkfish production in silvofishery areas Blanakan Subang West Java. MSc thesis (in Bahasa) Institut of Fisheries Bogor pp.55.
Tendencia EA, 2011, Temperature Fluctuation, Low Salinity, Water Microflora: Risk Factors for WSSV Outbreaks in Penaeus monodon, The Israeli Journal of Aquaculture ‐ Bamidgeh, 7
TranNH(2005)Effects of mangrove leaf litters on the integrated mangrove – shrimp farming systems in Ca Mau Province Vietnam. PhD thesisAsian Institute of Technology Thailand.
TranTPH(2012)Resilience and livelihoods dynamics of shrimp farmer and fishers in the Mekong Delta Vietnam. PhD thesisWageningen University pp.117–138.
TranHT BuiDT(2013)Cost–benefit analysis of mangrove restoration in Thi Nai Lagoon Quy Nhon City Vietnam. Asian Cities Climate Resilience Working Paper Series 4. IIED London England.
TranTPH NguyenTB(2014)Gender vulnerability assessment for Ca Mau Province in the context of climate change. Report for ICMP/CCCEP Program in Ca Mau Province.
Truong TN, 2006, The Role of Mangrove and Coral Reefs Ecosystems in Natural Disaster Mitigation and Coastal Life Improvement, 351
Van OudenhovenAPE SiahaineniaAJ SualiaI TonneijckFH Van der PloegS deGrootRS(2014)Effects of different management regimes on mangrove ecosystem services in Java Indonesia. Published by Wageningen University (Wageningen) and Wetlands International (Ede & Bogor).
VoQT(2013)Valuation of Mangrove Ecosystems along the Coast of the Mekong Delta in Vietnam an approach combining socio‐economic and remote sensing methods. PhD DissertationDepartment of Geography Faculty of Math and Natural Science Kiel University Kiel Germany.
YapWG(1997)Viewpoint on formulating policies for sustainable shrimp culture. FAO Fisheries Report No. 572 Supplement Papers presented at the FAO technical consultation on policies for sustainable shrimp culture. Bangkok Thailand 8‐11 December 1997 pp.158–165.
Young L, 2004, Development in Ecosystems, 145