Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/7473
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Fisheries production in Southeast Asian Farmer Managed Aquatic Systems (FMAS): II. Diversity of aquatic resources and management impacts on catch rates
Authors: Amilhat, Elsa
Lorenzen, Kai
Morales, Ernesto J
Yakupitiyage, Amararatne
Little, David Colin
Contact Email: d.c.little@stir.ac.uk
Keywords: ABUNDANCE
access
Animals
AQUACULTURE
AREAS
BIODIVERSITY
C
CARP
Countries
difference
diversity
Effectiveness
EVALUATE
FARMERS
farming
fish
fisheries
fishery
habitat
HOUSEHOLDS
IMPACT
IMPACTS
INCOME
Landscape
Management
nutrition
PARKS
polyculture
PONDS
Practice
practices
RANGE
RATES
resources
rights
service
services
support
SYSTEM
Systems
Thailand
Vietnam
WEIGHT
wild
Issue Date: Dec-2009
Publisher: Elsevier
Citation: Amilhat E, Lorenzen K, Morales EJ, Yakupitiyage A & Little DC (2009) Fisheries production in Southeast Asian Farmer Managed Aquatic Systems (FMAS): II. Diversity of aquatic resources and management impacts on catch rates, Aquaculture, 298 (1-2), pp. 57-63.
Abstract: Southeast Asian rice farmers often manage aquatic habitats and resources on their land to increase harvest of aquatic animals (Amilhat, E., Lorenzen, K., Morales, E.J., Yakupitiyage, A., Little, D.C., 2009. Fisheries production in Southeast Asian farmer-managed aquatic systems (FMAS). I. Characterisation of systems. Aquaculture 296, 219-226). We characterize the diversity of aquatic resources harvested from such Farmer Managed Aquatic Systems (FMAS) and evaluate the effectiveness of management practices within contrasting FMAS in Cambodia, Thailand and Vietnam. Farmers harvested diverse self-recruiting species (SRS) from FMAS in all study areas: 24 locally recognized species in Cambodia, 66 in Thailand and 17 in Vietnam. Fish accounted for the largest share of SRS by weight in all areas but frogs, snails, crustaceans and insects were also important. Amphibious species, well adapted to rice farming landscapes, dominated catches of both fish and non-fish SRS. Stocked cultured species (CS) comprised only fish, were less diverse and differed between countries according to aquaculture practices. SRS catch rates in FMAS were significantly higher than wild animal catch rates in open aquatic systems in Cambodia and Thailand, indicating an underlying difference in abundance. This positive effect is likely attributable to lower harvesting effort in FMAS (where access was restricted to owners), agricultural inputs, and management measures aimed specifically at increasing aquatic animal production. Various management measures were recorded, but only the construction of brush parks and fertilisation was associated with positive effects on catch rates in the SRS-dominated FMAS of Cambodia and Thailand. Ponds in Vietnamese FMAS were managed intensively as carp polyculture systems, and catch rates within them responded positively to a wide range of management inputs. FMAS support a high abundance of aquatic animals including diverse SRS and benefit nutrition and income of farming households, agro-ecosystem services, and biodiversity conservation.
Type: Journal Article
URI: http://hdl.handle.net/1893/7473
DOI Link: http://dx.doi.org/10.1016/j.aquaculture.2009.09.027
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Imperial College London
Imperial College London
University of Stirling
Asian Institute of Technology
Aquaculture

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