03637nas a2200253 a 450000500170000000800410001703500150005810000260007324501540009926000570025330000220031049000270033250001460035950200580050552024270056365000590299065000400304965000400308970000360312970000540316570000430321971000620326281000590332420260817163702.0220606s2016    th au m|rtt   000 a eng d  a.b123859061 aHasan, Shanur Jahedul13aAn assessment of the impact of climate change on the inland capture fisheries of Hilsa (Tenualosa ilisha) :ba case study in Meghna River, Bangladesh  aPathum Thani :bAsian Institute of Technology,c2016  a73 leaves :bill.1 aThesis ;vno. CC-16-03  aA thesissubmitted in partial fulfillment of the requirement for the degree of Master of Science in Climate Change and Sustainable Development  aThesis (M. Sc.) - Asian Institute of Technology, 2016  aHilsa (Tenualosa ilisha) is the largest single fishery in Bangladesh which contributes around  1 % to the national GDP. Lower Meghna River is the most important habitat of Hilsa as it  encompasses the major part of nursery and breeding grounds of this species. Climate change  driven alteration of environmental variables such as temperature, rainfall, river discharge,  sedimentation and oceanic parameters such as sea surface temperature, chlorophyll content  and primary productivity are likely to affect Hilsa fishery of inland and marine sector. Time  series of Hilsa landing from four major inland Hilsa landing stations (Chandpur, Barisal,  Bhola and Lakshmipur) along the Meghna River and one marine Hilsa landing site  (Cox'sbazar) were correlated with 1-2 year lagged time series of some selected  environmental variables by using XLST A T. Trend analyses of Hilsa landing along with  environmental variables were also under taken using MAKESENS (Mann-Kendall test for  trend and Sen's slope estimates). Landings of Hilsa displayed increasing trend in all sites  while the selected environmental variables rainfall, temperature, river discharge and  sedimentation showed spatial and temporal variation in trend. All of the selected oceanic  parameters showed basically no trend. Correlation analysis exhibited variation in annual level  and monthly level. Most of the climatic variables with 1-2 year lag were displayed negative  correlation with Hilsa landing annual level whereas month to month correlation showed  positive relation. Accordingly it was hypothesized that the selected environmental variables  may influence survival of Hilsa in early life stage. None of the selected oceanic parameters  were found to be significantly correlated with Hilsa landing from marine source. Analyses of  stakeholder's perception towards climatic and anthropogenic factors affecting inland Hilsa  capture fisheries from Meghna River showed that anthropogenic interventions such as use of  harmful fishing gear, increased fishing effort, Indiscriminate killing of Juveniles and brood  Hilsa are affecting inland Hilsa fishery more than alteration of climatic variables like rainfall,  river discharge and sedimentation. In the light of the analyses of the present study Inland  Hilsa capture fishery is found to be more vulnerable to the impact of alteration of climatic  variables then marine Hilsa capture fisheries.  0aClimate changezBangladeshzMeghna RivervCase studies 0aFisherieszBangladeshzMeghna River 0aTenualosazBangladeshzMeghna River1 aSalin, Krishna R.,eChairperson1 aShrestha, Rajendra Prasad,eExamination Committee1 aBhujel, Ram C.,eExamination committee2 aNICHE-BGD-156 Project, The NetherlandseScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. CC-16-03