A part of being an important source of animal protein and employment opportunities for people living in its vicinity, Nui Coc Reservoir supplies water used to control flooding and irrigate agriculture land and industrial zone. With the purpose of finding out whether seasonal water level fluctuations could affect fish production in the latter, monthly fisheries catch data by fishing gear were collected and analyzed taking into consideration the water level changes. | Journal of Fisheries science and Technology - 2016 FISH YIELD BY GEARS AND WATER LEVEL FLUCTUATIONS IN NUI COC RESERVOIR Stéphanie Kamondo12*, Aloys Musoni12, Anh Bui The3 Received: 20/6/2016; Revised: 09/9/2016; Accepted: 26/9/2016 ABSTRACT A part of being an important source of animal protein and employment opportunities for people living in its vicinity, Nui Coc Reservoir supplies water used to control flooding and irrigate agriculture land and industrial zone. With the purpose of finding out whether seasonal water level fluctuations could affect fish production in the latter, monthly fisheries catch data by fishing gear were collected and analyzed taking into consideration the water level changes. Two main fishing seasons (March - July and September - November) were observed using gill net and cover net gear; trammel net was used almost the all year except in winter whereas fishing with purse seine were done during the two main fishing seasons but in addition some activities were also done in winter. High levels of fish production in this water body were related to the drawdown and impounding processes. Some management activities are recommended to improve the benefits of utilizing the reservoir. Keywords: water level fluctuations, fishing gears, fishing seasons I. INTRODUCTION A lot of people depend directly or indirectly on fishery and aquaculture for their livelihoods and in addition to that fish plays a significant role in nutrition and good health of many people around the world. In recent years, the number of reservoirs has been steadily growing all over the world in order to provide water for irrigation, hydro-electric power generation, flood control, public water supply, recreation and navigation (Bhukaswan, 1980; De Silva, 2001) but they are never impounded for fishery development per se. Reservoir construction in Vietnam is continuing, as response to the growing demand for energy, water for crops and these water areas can usually be used secondarily for fisheries
