Final theses

The effect of complementary nutrient solutions in coupled and decoupled aquaponics

Aquaponic systems are an integrated closed-loop multi-trophic food production system that combines elements of a recirculating aquaculture system (RAS) and hydroponics. Aquaponic systems where the nutrient flows and concentrations within the different components (e.g., aquaculture and hydroponic parts) are independent of one another are called decoupled aquaponic systems (multi-loops) (DAPS), or double recirculation aquaponic systems (DRAPS). The other type of aquaponics, that is, coupled aquaponic in which the water passes from the aquaculture component to the hydroponic component and then back to aquaculture and has a single-loop.  Fish waste provides plant nutrients in coupled aquaponics, whereas aquaponic systems designed with independent loops offer greater control over the hydroponic component, where water can be complemented with mineral salts for increased nutrient concentrations and formulated by adjusting pH. On the other hand, minerals in used water can reduce nutrient uptake of plants (antagonistic effect) and the deficient nutrient element should be added externally. In this study, the required nutrient formulations for plant development and growth will be calculated and their effects will be investigated. 

This topic can be given as a Bachelor or Master thesis and started immediately. I guarantee you intensive support with regular meetings so that quick processing is possible.

Start of processing

Now

Study programme

Master

The comparison of the ecological footprint in soil-less systems vs. soil-based systems: Developing sustainable scenarios in Karapinar

Agriculture production is highly dependent on water and increasingly subject to water risks. Climate change causes droughts by diminishing surface and groundwater reserves. Consequently, major droughts have affected agricultural production. On the other hand, extreme weather events, like floods or tropical storms are also expected to be more because of climate change. This change affects the fluctuations in precipitation and surface water supplies, which will also alter the water requirements of the crop.  Agriculture irrigation accounts for the majority of world water use by 70%. Karapinar is one of the places with the least rainfall in Turkey. According to the observation data of 29 years, the annual precipitation amount is 279.5 mm. In Karapinar, water use is 90 percent in Agricultural settings. Farmers generally cultivate plants which consume of much water in these areas and use groundwater for irrigation. The unconscious use of groundwater for agriculture has caused both the drying up of lakes in the region and the occurunce of sinkholes. It has been reported that the number of sinkholes, previously known as 350, which occurred with the withdrawal of groundwater and the collapse of the soil, reached 600. In recent years, yield has decreased considerably in areas that cannot be irrigated due to drought. The disasters that this region is currently facing are: drought, wind erosion and water shortage. In this thesis, it will be investigated whether soilless agriculture with ecological footprint scenarios can be a sustainable solution in this region. This topic is planned as Master thesis. The thesis should be written in English and the results of the study should be published in a scientific journal.  The study can be started immediately. I guarantee you intensive support with regular meetings so that quick processing is possible.

Start of processing

Now

Study programme

Master