Local governments in middle-income countries have promoted the installation of containers to increase the collection of materials with potential for recycling. However, the level of collected
Plastic pollution in the ocean is a severe problem for Chile. Meet César Salazar, Associate Professor at Universidad del Bio-Bio, Chile, and a senior researcher at EfD Chile. He has been part of a
Most stated preference studies estimate discount rates using a split-sample approach. Each sample faces a different payment frequency (for instance, 1, 5, 10) together with a randomly assigned bid vector; both the frequency of payments and the bid are fixed for a specific individual. This paper evaluates whether allowing respondents to choose their preferred payment frequency affects the estimated discount rate.
The study assesses the conservation and fisheries benefits of the Blue Bay Marine Park in Mauritius. It addresses the question - are the higher catch rates near the Park a result of population spillovers or of reduced fishing effort in those waters due to site-specific attributes? There is no data on catches and fishing effort prior to the reserve's establishment; a bioeconomic model is used to separate the effects of spillover and effort redistribution on catch rates in waters next to the Marine Park.
Studies around Lake Victoria documented various challenges hindering higher landing prices among artisanal fishers associated with varying attributes of fish. However, determination of the effects of fish attributes on landing price, which is potential to the wellbeing of fishermen, remains undisclosed during the landing of the fish harvest to the landing sites. This paper employed cross-section data from 300 fishermen to examine the effects of fish attributes on fish prices of the selected fish species.
This study will determine the perceptions and preferences of the residents of the coastal state of Lagos as regards banning of single-use plastics and their willingness to pay (WTP) for plastic waste
The Fishery Performance Indicators is a data collection tool that allows collection of comparable fisheries data in the environmental, economic and community pillars even under data poor circumstances. In this paper, data collected for 35 fisheries in 14 African countries are analyzed and compared to global averages. Similar to a previous global analysis, the different pillars of sustainability were positively correlated. The results are even more pronounced for Africa than globally.
For nearly three decades, the Whitfield (1992) characterisation scheme served as a reference framework to type South African estuaries. We outline a revised ecosystem classification scheme that incorporates biogeographical zonation and introduces new types. Coastal outlets were re-categorised as estuaries or micro-systems. For functional estuaries, the Estuarine Lakes, Estuarine Bays and Predominantly Open Estuary types were largely retained. New types are Estuarine Lagoons and Arid Predominantly Closed Estuaries.
Coral reefs provide a multitude of goods and services, some of which are difficult to value due to their intangible nature and the absence of markets to ascribe their relative worth. The coral reefs of Sodwana Bay on the northeast coast of South Africa provide several ecological goods and services, of which only two are considered here: namely, sediment generation and sediment entrapment. Both are deemed essential to the functioning of the Sodwana Bay economy.
This paper presents an environmental flow methodology that was developed to accommodate shallow, highly dynamic micro-tidal estuaries found along the wave-dominated coast of South Arica. This method differs to most other approaches that primarily focus on larger permanently open systems having unrestricted inlets.