A C o mmunity-Ba se d Stud y o f the Do wnstre a m Imp a c ts o f the Ya li Fa lls Da m Alo ng the Se Sa n, Sre Po k a nd Se ko ng Rive rs in Stung Tre ng Pro vinc e , No rthe a st C a mb o d ia March 2002 By Ian Baird, Monsiri Baird, Chum Moni Cheath, Kim Sangha, Nuon Mekradee, Phat Sounith, Phouy Bun Nyok, Prom Sarim, Ros Savdee (Phiap), Hannah Rushton, Sia Phen Se San Protection Network Project, Partners For Development (PFD) Non Timber Forest Products Project (NTFP) Se San District Agriculture, Fisheries and Forestry Office Stung Treng District Office