The Importance Of Marine Aquaculture

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Wild fish stocks are decreasing due to heavy utilization and an increasing demand for aquatic products; so recently marine aquaculture is one of the most important and quickest growing industries in the world (Asche, 2008). This industry is a substitute for the traditional forms of fish supply and an important source of protein for the growing human population and can relieve the pressures on marine and coastal ecosystems (Lucas and Southgate, 2012). In addition, marine aquaculture can contribute to food security (Godfray et al., 2010; FAO, 2014).
Capture fishery production has been relatively static since the late 1980s, while aquaculture has grown considerably in this period (FAO, 2016). World per capita apparent fish consumption increased
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The combination of GIS software and multi criteria evaluation (MCE) techniques is a potential tool that can help users in solving complex spatial decision problems (Kamruzzaman and Baker, 2013; Krois and Schulte, 2014). The MCE approach is one of the most common methods used to identify suitable sites throughout the world. This approach combines multiple variables in a structured model (e.g. depth, chlorophyll-a, temperature, turbidity, distance to coastline etc.) using a weighted overlay where the weights are proportional to importance (Nath et al., 2000). This is useful as it allows the assessment of the spatial variability of the environmental, biological, and socioeconomic specifications relevant to marine aquaculture including consideration of the different levels of importance amongst parameters and providing a qualitative and quantitative output that is useful and easy to understand for decision makers. Various research studies have been conducted in order to select suitable sites for marine aquaculture. Some of these studies include identifying suitable sites for coastal aquaculture in Camas Bruaich Ruaidhe, Mexico (Ross et al., 1993), selecting Margarita…show more content…
This study uses an OWA-based decision analysis approach to combine the concept of risk into the GIS-based analysis to determine the suitable areas for marine aquaculture. Therewith, the two types of combination rules can be generalized within the framework of OWA. So, this paper presents a quantitative evaluation in the coastal regions with the depth less than 50m, using Geographic Information System (GIS) based on Multi-Criteria Evaluation (MCE) with Ordered Weighted Averaging (OWA) technique and also satellite remote sensing technology to identify suitable sites for marine aquaculture development in the southern part of the Caspian Sea, Coasts of Mazandaran

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