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ผู้เขียน หัวข้อ: Fisheries production in Southeast Asian farmer managed aquatic systems  (อ่าน 2125 ครั้ง)
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« เมื่อ: กุมภาพันธ์ 21, 2010, 03:36:37 AM »

Fisheries production in Southeast Asian farmer managed aquatic systems (FMAS)
I. Characterisation of systems

E. Amilhat a, K. Lorenzen a,⁎, E.J. Morales b, A. Yakupitiyage c, D.C. Little b
a Division of Biology, Imperial College London, Silwood Park, Ascot SL5 7PY, UK
b Institute of Aquaculture, University of Stirling, Stirling FK9 4LA, UK
c Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani 12120, Thailand

Aquaculture 296 (2009) 219–226


Keywords:
Farmer managed aquatic systems
Self-recruiting species
Rice farming landscape
Agro-ecosystem

a b s t r a c t

Southeast Asian rice farmers often manage aquatic habitats and resources on their land to increase production of aquatic animals. We introduce the concept of ‘farmer-managed aquatic systems’ (FMAS) to capture the diversity of these resource systems at the interface of aquaculture and capture fisheries and characterize FMAS in contrasting agro-ecosystems of Cambodia, Thailand and Vietnam. Cambodian and Thai FMAS yielded primarily self-recruiting species (SRS) and were managed to allow or attract them, while Vietnamese FMAS were managed more intensively to produce mostly hatchery-reared species. More than 90% of rice farming households in the study areas of Cambodia and Thailand harvested aquatic animals from their land, and about 70% created aquatic habitats such as ponds in addition to rice fields in order to increase aquatic resource production. Cambodian households created and utilized a wide variety of man-made aquatic habitats, while Thai households created predominantly trap ponds. In contrast, less than half of Vietnamese farming households harvested SRS and very few undertook FMAS management specifically for them. Vietnamese FMAS were intensively stocked and managed as aquaculture systems, with SRS accounting for less than 30% of production. Nonetheless, SRS production per area of FMAS was comparable in the three countries. Contrasting FMAS characteristics in different study areas reflect underlying differences in agroecosystems, aquaculture technologies, farmer livelihoods and markets.
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