This paper explores the debate on participatory approach by presenting evidence from the local communities practices living within the marine protected area in Tanzania (Mnazi Bay Ruvuma-Estuary Marine Park). Five out of fifteen villages that exist in Mnazi Bay Marine Park were selected for this study after consultation with the park authority. Stratified sampling of villages was conducted based on the location from the Indian Ocean: three villages located close to the sea (sea front villages) and two villages located far from the sea (inland villages).

We develop a model of a multi-national firm producing commodities for a global market in multiple locations with location-specific risks and different regulatory standards. Salmon aquaculture and disease outbreaks provide an empirically relevant example. We specifically examine details of the infectious salmon anemia outbreak in Chile in the late 2000s, the multi-national nature of some firms operating in Chile, and the overall market structure of the salmon farming industry as motivation for our theoretical model.

A valuation scenario was designed using a contingent-valuation approach and presented to decision makers in business firms in Kenya’s Lake Naivasha basin to test how applicable a water fund might be as a potential financing mechanism for a payment for water-related ecosystem services scheme. The findings indicate that measuring a firm’s willingness to invest in ecosystem services could help determine whether a firm would invest and engage with other stakeholders to pool their investments in ecosystem services.

We specify a model to analyze the participation and supply decisions of coastal producers performing with mussel seed uptake.

In this study, we measure the value of sanitary restrictions in terms of forgone profits. For this, we model the short-run trade-off between biosecurity and profits in the aquaculture industry.

The amenity value of the Kogelberg Coast of South Africa was estimated on the basis of a survey of users, property data and park visitor statistics, as well as spatial data on coastal features, development and recreational activities. In addition to the permanent population of about 13 000, visitors spend an estimated 4.3 to 5.3 million visitor days per year, of which holiday home owners, other overnight visitors and day visitors account for about 22 percent, 56 percent and 21 percent, respectively. Coastal activities contributed 71 percent to all users’ enjoyment of the area.

Recreational angling in South Africa is not well monitored, even though recreational fishing contributes to over-exploitation of line fish stocks. This is because authorities don’t have the resources or political will to patrol the entire coastline. This study shows that anglers tend to seek out fishing spots where they are likely to catch the most fish. If enforcement officials target these ‘hotspots’, they can monitor whether anglers are adhering to their permit conditions, which limit the number and size of fish that they are allowed to catch. 

We explore the effects of different enforcement mechanisms, including formal (external), informal (local), and both together, on individual compliance behavior under a system of territorial use rights in fisheries (TURFs).

Se estudia la evolución de la actividad acuícola en Chile y el impacto de los cambios regulatorios sobre las decisiones de localización de los centros de cultivo. Este estudio considera un análisis descriptivo del desarrollo espacio-temporal de los centros de cultivo. Enseguida, utilizando un panel de datos, se estimó un modelo de elección de sitios con el objetivo de explorar los factores determinantes de la elección de ubicación de los centros acuícolas. Los resultados del análisis sugieren la existencia de un claro patrón de desarrollo espacio-temporal de la acuicultura en Chile.