Evaluation of adopted best management practices in shrimp farming in Sri Lanka, using life cycle assessment | |
| Author | Atapaththu, Keerthi Sri Senarathna |
| Call Number | AIT Thesis no.AQ-10-04 |
| Subject(s) | Shrimp fisheries--Sri Lanka Shrimps--Life cycles |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Aquaculture and Aquatic Resources Management, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AQ-10-04 |
| Abstract | Shrimp farming is one of the main aquacu lture practices in Sr i Lanka. Based on the scale of operation, shrimp farming system in Sri Lanka can be cate gorized small scale, medium scale and large scale. Best Management Practices (BMPs) have been introduced to improve sustainability of the sector and three above categories have been adopted BMPs low, medium and more level of a doption respectively. This study was conducted in farm level approach aiming to assess the shrimp production sy stems, to evaluate ef fectiveness of adopted BMPs in terms of their support to reduce environmental burdens and to identify the ways which can help to improve environmental performances using the tool of Life Cycle Assessment (LCA). Global Warm ing Potential, Acidification Potential, Energy Consumption, Ecotoxicity, Water Dependence and Eutrophicati on Potential were asse sses using the EDIP method. Qualitative and quantitative LCA results were used to compare impacts during pond preparation, grow-out stage and harvesting stage. Grow out stage contributes more than 80% share for all potential impacts except abiotic depletion showing the hot spot of Sri Lankan shrimp farming. Large scale farms show the highest impact potential of global warming potential, acidification potent ial and energy consumption followed by medium scale and small scale farms. But the highest water dependence o ccurred in small scale. Nitrate and phosphate loading in large scale has redu ced by means of adopted BMPs but considerable variation in eutrophication potential among three categories was not observed. This study recommends to consider how BMPs are formulated to serve energy during grow out stage and ways to reduce ammonia-N in effluent of large scale farm s to reduce eutrophicatio n potential for better environmental performances. |
| Year | 2010 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AQ-10-04 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Aquaculture and Aquatic Resources Management (AQ) |
| Chairperson(s) | Yakupitiyage, Amararatne |
| Examination Committee(s) | Gallardo, W. G.;Thakur, D.P;Mungkung, R. |
| Scholarship Donor(s) | Asian Development Bank (ADB) |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2010 |