Johanna Suhl

Johanna Suhl
Humboldt-Universität zu Berlin | HU Berlin · Biosystem Engineering

MSc

About

20
Publications
21,928
Reads
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438
Citations
Citations since 2017
10 Research Items
410 Citations
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2017201820192020202120222023020406080
2017201820192020202120222023020406080
Introduction
Johanna Suhl currently works at the Humboldt-Univerität zu Berlin, Devision Biosystem Engineering. Johanna does research in Aquaponics, Horticulture, Agricultural Plant Science and Plant Fertilization.
Additional affiliations
January 2015 - December 2017
Leibniz-Institute of Freshwater Ecology and Inland Fisheries
Position
  • PhD Student
February 2014 - December 2014
Humboldt-Universität zu Berlin
Position
  • Researcher

Publications

Publications (20)
Article
Aquaponics combine the production of fish and plants in a sustainable way due to the double use of water and nutrients. Compared to conventional single recirculation aquaponic systems (SRAPS), the double recirculation aquaponic systems (DRAPS) are improved by the combination of two separate recirculating systems: the recirculating aquaculture syste...
Article
Full-text available
Decoupled aquaponic systems have the potential to become one of the most effective sustainable production systems for the combined production of animal protein and plant crops. Here, recirculating aquaculture systems for fish production are combined with hydroponics for soilless plant production thereby recycling dissolved nutrients derived from me...
Article
Full-text available
The integration of agricultural production systems into urban areas is a challenge for the coming decades. Because of increasing greenhouse gas emission and rising resource consumption as well as costs in animal husbandry, the dietary habits of people in the 21st century have to focus on herbal foods. Intensive plant cultivation systems in large ci...
Article
In contrast to conventional single recirculation aquaponic systems (SRAPS), the innovative double recirculating aquaponic system (DRAPS) provides an opportunity for intensive fish and plant production. This system is based on two separate recirculating systems, a recirculating aquaculture system (RAS) and a closed hydroponic system, whereby the com...
Article
The increase of global population causes rising food demand and concomittantly scarcity of resources. These facts including global warming need the further development of resource-efficient food production systems such as double recirculating aquaponic systems (DRAPS). This recent technology is suitable for intensive food production with minimal re...
Poster
Full-text available
Over time the human population has become increasingly urban. The proportion of city dwellers increased from 30% in 1950 to 66% in 2015. Due to this concentration of people in densely-built areas, a rethinking of agricultural and horticultural production is needed urgently. While the demand for fresh vegetables and other natural resources such as w...
Poster
Full-text available
Der deutsche Gartenbau befindet sich im Spagat zwischen einem hohen internationalen Wettbewerb einerseits und einem starken Preisdruck von Seiten der Abnehmer andererseits. Hinzukommt, dass der Lebensmitteleinzelhandel verstärkt Informationen zum Ressourceneinsatz einfordert. Infolgedessen gewinnt in gartenbaulichen Produktionsbetrieben die ressour...
Article
Full-text available
Growing environmental and sustainability concerns have driven continual modernization of horticultural practices, especially for urban farming. Controlled environment and soilless production methods are increasing in popularity because of their efficient resource use and intensive cropping capabilities. However, some popular substrates used for hyd...
Presentation
Full-text available
Net photosynthetic rate per unit leaf area(PN) is regarded as a standard parameter indicating the maximum photosynthetic activity of leaves under the measurement environmental conditions, which can be measured non-destructive and in real time by gas exchange instruments, e.g., using BERMONIS. However, it is not quite clear if it is possible to calc...
Article
Aquaponics for intensive crop production is a highly complex system in which three different biological systems (fish, plants, and nitrifying bacteria) with different requirements must be merged. Finding the right combination is a serious challenge and the dependencies avoid a high productivity until now. Therefore, a unique and innovative double r...
Article
Effects of organic waste from hydroponic system added with minerals (organo-mineral fertilizer) and synthetic fertilizer on major polyphenols of red oak leaf lettuce using HPLC-DAD-ESI-MS3 were investigated. Interestingly, contents of the main flavonoid glycosides and caffeic acid derivatives of lettuce treated with organo-mineral fertilizer were e...
Article
Full-text available
Die Minimierung von Chlorat bei der elektrolytischen Gießwasserdesinfektion ist aufgrund problematischer Chloratrückstände in pflanzlichen Lebensmitteln von Bedeutung. Im Hinblick auf verfahrenstechnische Optimierungsvorschläge wurde daher am Beispiel einer Salzelektrolyseanlage (Einkammersystem) geprüft, wie viel Chlorat beim Herstellungsprozess d...
Article
Full-text available
To the background of discussions on problematical residues in plant-derived foods, the procedure for minimising chlorate content in the electrolytic disinfection of irrigation water is of great importance. As a source of adjustment recommendations was investigated, on the basis of a brine electrolysis plant (single chamber system), how much chlorat...
Article
Full-text available
To reduce the rock wool waste, the present study is focused on the evaluation of sheep wool, cultivated Sphagnum biomass and hemp, which may be used as replacement for rock wool as growing substrate for hydroponic tomato production. As such, physical and chemical properties of substrates, the plant growth, yield, fruit characteristics, as well as p...
Article
Full-text available
Aquaculture is globally the fastest growing sector of agriculture that needs to be sustainable and must also meet bioeconomic demands. In principle, aquaponics, the combination of aquaculture and horticulture within a single recirculating aquaponic system (SRAPS), provides a sustainable approach; however, it has lower productivity of both fish and...
Article
Poultry red mite infestation still is an unsolved problem in poultry farms. Legal regulations, residue risks, and resistances limit chemical control of mites. Alternatives to chemical acaricides for control of poultry red mite are silica-based products, which have as a main constituent silicon dioxide. The acaricidal effect is attributed to sorptiv...
Article
Based on the fact that several regions worldwide and even in Germany are affected by water deficit problems, a new agronomic approach was developed to produce tomatoes (Solanum lycopersicum L.) in a sustainable way. The main objective of this study was to investigate the effects of a special solar collector greenhouse consisting of finned tube heat...
Conference Paper
Full-text available
Da durch die Herstellung und Entsorgung der Steinwollsubstrate die Umwelt zusätzlich belastet wird, wurden alternativ zu diesem Substrat vier organische Substrate, pflanzlichen (ungereinigte Schafwolle, Torfmoos und Hanf) und synthetischen (Plyurethanschaum [PUS]- BVBSublime) Ursprungs auf ihre Eignung für die hydroponische Tomatenproduktion unters...

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Projects

Projects (2)
Project
The goal of the project “Development of a sensor based intelligent greenhouse management system” is to establish a system for increasing the efficiency of production under glass. This system accesses on huge quantities of data recorded in different greenhouses and determines optimal culture control strategies. Furthermore, the resource consumption is calculated and can be processed further to important parameters (e.g., carbon footprint, resource input per yield unit etc.), which can be used for costumer communication or to compare the resource consumption of different enterprises. This system includes intelligent sensors, which show plant responses, such as photosynthesis, fruit growth and plant transpiration, under different cultivation conditions. In addition, different scenarios of cultivation strategies can be simulated on the computer. As such, the aim is to reduce raw material consumption caused by an optimal crop management. The work plan is split into three project phases. During the first project phase, the work is focused on the description of the system and on the definition of the system boundaries, as well as on the selection and optimization of the sensor technology. The largest part of the first project phase covers data acquisition, as well as the model development and the calculation of resource balances. Structuring and preparation of the greenhouse management system take place during the following project phase. The data from the first and the second project phase must be merged into one overall system and evaluation tools have to be implemented. As such, the communication with existing systems is an important prerequisite. The third and last project phase is focused on the validation and optimization of the greenhouse management system. This phase also serves the purpose to determine strategies in order to minimize the recourse input for the production under glass. Project duration: 1. September 2017 – 31. October 2020 Funding code: 2815701315 Project coordinator: Dr. Dennis Dannehl The project is supported by funds of the Federal Ministry of Food and Agriculture(BMEL) based on a decision of the Parliament of the Federal Republic of Germany via the Federal Office for Agriculture and Food (BLE) under the innovation support programme.
Project
In the next few years, urban horticulture will be used as tool to network intensive plant production with urban infrastructure. The project will accumulate knowledge about the feasibility to integrate intensive plant production in peri-urban and urban structures in Berlin and Mexico-City, including the estimation in terms of required technical, infrastructural and socio-economic conditions. In order to find future-oriented statements in terms of possible scenarios applied in closed systems in peri-urban and urban plant production, as well as to present symbiotic effects between horticulture and urban infrastructure, surveys, plant experiments, chemical analyses and simulation calculations are scheduled. During this project, the exchange of scientists will be used to learn from each other be-cause an interesting professional composition consisting of biosystems engineering, urban ecophysiology and mathematical system modelling exist. Project duration: 1. November 2016 – 31. October 2019 Funding code: 01DN16032 Funded by: Federal Ministry of Education and Research Project management agency: DLR Project Management Agency