Irrigated agriculture and maintaining inland capture fisheries are both essential for food and nutrition security in Myanmar. However, irrigated agriculture through water control infrastructure, such as sluices or barrages, weirs and regulators, creates physical barriers that block migration routes of important fish species.
The 2018 International Conference on River Connectivity (Fish Passage 2018), incorporating the First International Symposium on Hydropower and Fish Management, will bring together Northern and Southern Hemisphere fish passage researchers and practitioners to exchange findings and experiences on fish passage issues.
Mangroves are one of the most productive ecosystems in the world, sustaining millions of coastal livelihoods. However, their area of occurrence has been greatly reduced over the last century. In this study, we identify potential drivers of land use and land cover change adjacent to mangroves on the Pacific shorelines of Colombia, Panama and Costa Rica. We also evaluate the effectiveness of protected areas at halting mangrove deforestation between 2000 and 2012. Across all countries, agriculture was the most dominant land use type adjacent to mangroves, inside and outside protected areas.
Inland valley swamps (IVSs) form part of the upland-inland valley continuum in Sierra Leone, occupying the lowest position in the landscape. This study aimed to analyze the actual use, constraints on the use and the agro-potential of IVS in Tonkolili District. Through interviews and limited field testing, it was possible to obtain detailed information regarding socioeconomic aspects and food production systems, as well as a rough assessment of physical properties such as soil quality and inundation period for each targeted IVS in all 11 chiefdoms in the district.
After commencing with a summary of the current status, importance and productivity of natural wetlands, the chapter reviews the contribution of wetland ecological functions to sustaining vital ecosystem services. Wetlands are vulnerable to a range of anthropogenic pressures, notably land use change, disruption to regional hydrological regimes as a result of abstraction and impoundment, pollution and excessive nutrient loading, the introduction of invasive species and overexploitation of biomass, plants and animals.
The Integrated Protected Area Co-management (IPAC) project is a five year USAID contract working with the government and people of Bangladesh to establish a robust national protected area system on the principle of co-management. The introductory chapter gives an overview of the various papers presented in the book.
Increased production of mola and other small fish can be achieved through stock enhancement and sustainable management of natural wetlands. Enhanced fish production can increase consumption and provide nutritional benefits, especially for women and young children, as they suffer from high rates of malnutrition, including micronutrient deficiencies. Mola and other small fish, which are eaten whole, have high contents of vitamins and minerals. In recent years, there has been a reduction in fish production and biodiversity in wetland areas of Bangladesh.
Aquatic agricultural systems in developing countries face increasing competition from multiple stakeholders over rights to access and use natural resources, land, water, wetlands, and fisheries, essential to rural livelihoods. A key implication is the need to strengthen governance to enable equitable decision making amidst competition that spans sectors and scales, building capacities for resilience, and for transformations in institutions that perpetuate poverty.
Settlement ponds are used to remove particulate and dissolved nutrients in Australian land-based aquaculture wastewater. At best, marine and brackish water settlement ponds reduce total suspended solids by 60%, but their efficiency is inconsistent. Functional improvements to nutrient removal systems are essential to provide uniform and predictable treatment of flow-through aquaculture wastewater. Furthermore, environmental regulation of discharge from intensive systems in Australia is increasing, providing the impetus to upgrade rudimentary single-step settlement pond systems.