Energy systems analysis of transboundary river basins in a nexus approach: the Sava river basin study case

Resource management policies are frequently designed and planned to target specific needs of particular sectors, without taking into account the interests of other sectors who share the same resources. In a climate of resource depletion, population growth, increase in energy demand and climate change awareness, it is of great importance to promote the assessment of intersectoral linkages and, by doing so, understand their effects and implications. This need is further augmented when common use of resources might not be solely relevant at national level, but also when the distribution of resources ranges over different nations. This dissertation focuses on the study of the energy systems of five south eastern European countries, which share the Sava River Basin, using a water-food(agriculture)-energy nexus approach. In the case of the electricity generation sector, the use of water is essential for the integrity of the energy systems, as the electricity production in the riparian countries relies on two major technologies dependent on water resources: hydro and thermal power plants. For example, in 2012, an average of 37% of the electricity production in the SRB countries was generated by hydropower and 61% in thermal power plants. Focusing on the SRB, in terms of existing installed capacities, the basin accommodates close to a tenth of all hydropower capacity while providing water for cooling to 42% of the net capacity of thermal power currently in operation in the basin. This energy-oriented nexus study explores the dependency on the basin’s water resources of the energy systems in the region for the period between 2015 and 2030. To do so, a multi-country electricity model was developed to provide a quantification ground to the analysis, using the open-source software modelling tool OSeMOSYS. Three main areas are subject to analysis: first, the impact of energy efficiency and renewable energy strategies in the electricity generation mix; secondly, the potential impacts of climate change under a moderate climate change projection scenario; and finally, deriving from the latter point, the cumulative impact of an increase in water demand in the agriculture sector, for irrigation. Additionally, electricity trade dynamics are compared across the different scenarios under scrutiny, as an effort to investigate the implications of the aforementioned factors in the electricity markets in the region.

Fisheries co-management : ecological and social impacts. A case study of Northern Mozambique

Co-management, or participative management of fisheries, consists of returning or opening to the community the management of fisheries. This work, carried out in northern Mozambique, analyzed the ecological and social impacts of the implementation of co-management of fisheries. Firstly 198 species of fish were found and photographed and a guide to identification of species - essential to who works in the marine environment – was produced. Following, the spill-over effect was identified in a marine sanctuary. It occurred after 6 years and only for herbivore fishes and not to the carnivores. In order to evaluate co–management of fisheries effects, the captures of the entire province were analyzed. No differences were found in the diversity of the species caught, but an increase of the fish size was detected: this size was smaller in the fishing centers with no CCP (Community Fishing Councils), slightly bigger in the fishing centers with CCP and even bigger in the fishing centers with a more efficient management. At the same time it was observed that the size of the fish caught is bigger in the fishing centers further away from the markets. In addition to the ecological effects and the effects on fisheries, it was also analyzed the point of view of those who live the co-management. The socioeconomic factors that have a stronger influence in their perceptions are the age and the wealth. Finally and according to the CCP members, their main achievements are in the fisheries inspection and in the creation of conservation areas. Their main difficulties are the lack of means of transportation and the lack of recognition of the CCP's authority; both among the population and in the coordination with local authorities. This thesis pioneered in Mozambique in assessing the effects of Community sanctuaries and the effects of CCP on fisheries as well as by revealing the profile of the supporters of co-management and marine sanctuaries. Finally, an assessment of the matter of fact problems that the communities have to face when implementing co-management was also made.