Evaluation of water and soil qualities for giant freshwater prawn farming site suitability by using the AHP and GIS approaches in Jelebu, Negeri Sembilan, Malaysia

Abstract

<abstract> <p>Water and soil qualities play significant roles in the farming of giant freshwater prawn. The study evaluated water and soil qualities for giant freshwater prawn farming site suitability by using Analytic Hierarchy Process (AHP) and Geographic Information System (GIS) in Jelebu, Malaysia. The water quality parameters measured were biochemical oxygen demand, chemical oxygen demand, ammonia nitrogen, pH, dissolved oxygen, water temperature, total suspended solids, nitrite concentration and phosphate concentration, meanwhile soil qualities investigated were land use, slope, pH, texture, organic carbon and organic matter. Site suitability analysis can assist to identify the best location for prawn production. Specialist's opinions were used to rank the level of preference and significance of each of the parameter while the pairwise comparison matrix was applied to calculate the weight of each parameter for prawn farming. There are about 45.41% of the land was most suitable, 28.89% was moderately suitable while 25.69% was found unsuitable for prawn farming. The combination of AHP and GIS could give a better database and guide map for planners and decision-makers to take more rewarding decisions when apportioning the land for prawn farming, for better productivity.</p> </abstract>

Application of the Ground Penetrating Radar (GPR) and Electromagnetic (EM34-3) Geophysical Tools and Sedimentology for the Evaluation of the Subsurface of Sites Earmarked for Aquaculture Ponds in the Amazon Region of Northern Brazil

“…In addition to the available geophysical tools, which have their own physical properties, a number of other potential methods based on geotechnology are available [11], which have been integrated with other approaches (e.g., the AHP, ANP, and MCDM methods), to identify the sites most appropriate for inland aquaculture [12,20,21,[78][79][80][81][82]]. An integrated approach of this type was applied to select sites for fish farming in M'diq Bay in Morocco [6].…”

Biochar-Bacillus consortium for a sustainable agriculture: physicochemical and soil stability analyses

“…As the biofilm matures, its inhabitants begin to generate an adhesive matrix, which allows cells to adhere to one another and form a layered biofilm. The matrix, also known as extra polymeric material (EPS), is mostly made up of exopolysaccharide, protein, and DNA (Hamon and Lazazzera 2001;Abdullah et al 2021).…”

“…According to Bejarano et al (2017), bacteria can build up more readily on hydrophobic carriers than on hydrophilic mineral surfaces, which is the case for most biochars. Furthermore, a new study shows that single bacterial species may be immobilized on biochar for biotechnological purposes rather than a community of bacteria, which is required in the production of an efficient biofertilizer (Cheng et al 2020;Ajeng 2021). Thus, the aim of this study is to optimize the operating conditions for the immobilization of Bacillus consortium biofilm formation on palm kernel shell biochar.…”