Climate change-related risk adaptation in striped catfish, tilapia and shrimp farming systems in the Mekong Delta, Vietnam
This study aims to determine climate change-related risk (CCR) impacts, responses of farmers, and assistant activities in tilapia cage culture (TC), striped catfish nursery (SCN), striped catfish grow-out (SCG), improved extensive shrimp (IES) and intensive shrimp (IS) systems. A survey of 601 farme...
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Published in | Can Tho University Journal of Science Vol. 13; no. 1 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
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CAN THO UNIVERSITY PUBLISHING HOUSE
05.05.2021
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Abstract | This study aims to determine climate change-related risk (CCR) impacts, responses of farmers, and assistant activities in tilapia cage culture (TC), striped catfish nursery (SCN), striped catfish grow-out (SCG), improved extensive shrimp (IES) and intensive shrimp (IS) systems. A survey of 601 farmers in the Mekong Delta, Vietnam, was conducted using clustered sampling. Intense rainfall events and rapid changes in temperature affected all five surveyed farm systems. Extreme high temperatures impacted the TC, IES and IS systems, while extreme low temperatures impacted the striped catfish groups (SCN and SCG). Striped catfish farming systems were more sensitive to low temperatures in comparison to shrimp and tilapia. For risk management purposes, increasing pond dike height was applied in the SCN and SCG farming systems. While increased pond depth was observed in the SCN, SCG and IS systems, the IS and SCN systems had higher counts of additional pond construction. Water quality was monitored and feed supplements/medicines were used by farmers in all five farm systems; however, these activities were higher for the SCN, SCG and IS systems than for the TC and IES groups. Reduced stocking density was observed in TC, SCN, SCG and IS, but not in IES. In addition, the use of aerators or mixers was the most-employed solution in the IS system. Amongst information sources of climate-related risks, television was found to be the most important, followed by neighbouring farmers and the Department of Fisheries (DOF)... |
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AbstractList | This study aims to determine climate change-related risk (CCR) impacts, responses of farmers, and assistant activities in tilapia cage culture (TC), striped catfish nursery (SCN), striped catfish grow-out (SCG), improved extensive shrimp (IES) and intensive shrimp (IS) systems. A survey of 601 farmers in the Mekong Delta, Vietnam, was conducted using clustered sampling. Intense rainfall events and rapid changes in temperature affected all five surveyed farm systems. Extreme high temperatures impacted the TC, IES and IS systems, while extreme low temperatures impacted the striped catfish groups (SCN and SCG). Striped catfish farming systems were more sensitive to low temperatures in comparison to shrimp and tilapia. For risk management purposes, increasing pond dike height was applied in the SCN and SCG farming systems. While increased pond depth was observed in the SCN, SCG and IS systems, the IS and SCN systems had higher counts of additional pond construction. Water quality was monitored and feed supplements/medicines were used by farmers in all five farm systems; however, these activities were higher for the SCN, SCG and IS systems than for the TC and IES groups. Reduced stocking density was observed in TC, SCN, SCG and IS, but not in IES. In addition, the use of aerators or mixers was the most-employed solution in the IS system. Amongst information sources of climate-related risks, television was found to be the most important, followed by neighbouring farmers and the Department of Fisheries (DOF)... |
Author | Nguyen, Thanh Phuong Dao, Minh Hai Long Van, Nghia Nguyen, Do Quynh Phan Thi Thanh, Truc Lebel, Louis Lebel, Boripat Vo, Nam Son Nguyen Quynh, Anh |
Author_xml | – sequence: 1 givenname: Nam Son surname: Vo fullname: Vo, Nam Son – sequence: 2 givenname: Minh Hai surname: Dao fullname: Dao, Minh Hai – sequence: 3 givenname: Do Quynh surname: Nguyen fullname: Nguyen, Do Quynh – sequence: 4 givenname: Nghia surname: Long Van fullname: Long Van, Nghia – sequence: 5 givenname: Truc surname: Phan Thi Thanh fullname: Phan Thi Thanh, Truc – sequence: 6 givenname: Anh surname: Nguyen Quynh fullname: Nguyen Quynh, Anh – sequence: 7 givenname: Boripat surname: Lebel fullname: Lebel, Boripat – sequence: 8 givenname: Louis surname: Lebel fullname: Lebel, Louis – sequence: 9 givenname: Thanh Phuong surname: Nguyen fullname: Nguyen, Thanh Phuong |
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Title | Climate change-related risk adaptation in striped catfish, tilapia and shrimp farming systems in the Mekong Delta, Vietnam |
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