Taxonomy of Means and Ends in Aquaculture Production—Part 2: The Technical Solutions of Controlling Solids, Dissolved Gasses and pH

174

Abstract:Aquaponics is the combination of aquaculture (fish) and hydroponic cultivation of plants. This review examines fish welfare in relation to rearing water quality, fish feed and fish waste and faeces to develop a sustainable aquaponic system where the co-cultured organisms, fish, bacteria in biofilters and plants, should be considered holistically in all aquaponics operations. Water quality parameters are the primary environmental consideration for optimizing aquaponic production and for directly impacting fish welfare/health issues and plant needs. In aquaponic systems, the uptake of nutrients should be maximised for the healthy production of the plant biomass but without neglecting the best welfare conditions for the fish in terms of water quality. Measures to reduce the risks of the introduction or spread of diseases or infection and to increase biosecurity in aquaponics are also important. In addition, the possible impacts of allelochemicals, i.e., chemicals released by the plants, should be taken into account. Moreover, the effect of diet digestibility, faeces particle size and settling ratio on water quality should be carefully considered. As available information is very limited, research should be undertaken to better elucidate the relationship between appropriate levels of minerals needed by plants, and fish metabolism, health and welfare. It remains to be investigated whether and to what extent the concentrations of suspended solids that can be found in aquaponic systems can compromise the health of fish. Water quality, which directly affects fish health and well-being, is the key factor to be considered in all aquaponic systems.

“…The method specifically utilised for solid removal from the rearing unit in the aquaponic systems are recently reviewed in detail [118].…”

Section: Wastes and Faecesmentioning

confidence: 99%

Section: Wastes and Faecesmentioning

confidence: 99%

Fish Welfare in Aquaponic Systems: Its Relation to Water Quality with an Emphasis on Feed and Faeces—A Review

Yıldız

Robaina

Pirhonen

et al. 2017

174

“…Part 2-Technical solutions for controlling solids, dissolved gasses, and pH [12] The map of aquaculture production is used to find all possible technical solutions for all the methods in three treatment functions, the controlling solids, dissolved gasses and pH functions. The result is a partial taxonomy of treatment function through methods to technical solutions.…”

Section: Article Descriptionmentioning

confidence: 99%

Taxonomy of Means and Ends in Aquaculture Production—Part 1: The Functions

Björnsdóttir

Oddsson

Thorarinsdottir

et al. 2016

Self Cite

Abstract:The aquaculture sector has been increasing its share in the total fish production in the world. Numerous studies have been published about aquaculture, introducing a variety of techniques and methods that have been applied or could be applied in aquaculture production systems. The purpose of this study is to present a systemic overview of the functions of aquaculture production systems. Each function of an aquaculture system is applied to carry out a certain purpose. The results are divided into three sets of functions: input, treatment, and output. Input functions deal with what happens before the rearing area, treatment functions are about what happens inside the rearing area, and output functions is what comes out of the system. In this study, five input functions, ten treatment functions, and five output functions are indentified. For each function the controlling parameters or indicators were identified and then a list of possible methods or technological solutions in order to carry out the function was compiled. The results are presented in a system map that aggregates all functions used in different types of aquaculture systems along with their methods of solution. This is the first of four articles that together generate taxonomy of both means and ends in aquaculture. The aim is to identify both the technical solutions (means) that solve different functions (ends) and the corresponding functions. This article is about the functions.

“…The following section is a summary of the authors previous articles [4,5]. The taxonomies of means (technical solutions [4,5]) are presented in each subsection along with a summary of how other treatment functions are or can be influenced.…”

Section: The Taxonomy Of Technical Solutionsmentioning

confidence: 99%

“…They also list the key variables that have to be monitored and collected all of the methods that solve the functions [3]. One part of the functions, the treatments, were then analyzed and all technical solutions to each method categorized into a taxonomy of technical solutions [4,5]. In this paper, the journey is concluded, and a map showing how each technical solution might solve multiple treatment functions is made.…”

Section: Introductionmentioning

confidence: 99%

Taxonomy of Means and Ends in Aquaculture Production—Part 4: The Mapping of Technical Solutions onto Multiple Treatment Functions

Vilbergsson¹,

Oddsson²,

Unnþórsson³

2016

Self Cite

Designing aquaculture production units will require decisions on which treatment to include, e.g., the intensification of the system, and then a decision on a technical solution for each treatment function selected to implement. To complicate matters, each technical solution is not unique to each treatment function, but has a multiple effect on the system. This interaction of a technical solution to multiple treatment functions will play a part in the decision making process. Previous work by the authors has made a taxonomy of all technical solutions for the treatment function, and in this article, how technical solutions affect treatment functions is mapped. The article views the aquaculture production system as a transformation process with three sets of functions, input, treatment and output. Based on a comprehensive literature review where all technical solutions were found and categorized into a taxonomy, their effect on treatment function was mapped using a quality function deployment (QFD). The result is a matrix that gives an evaluation on the interaction. This work is a step towards an aquaculture engineering design methodology.