ability of duckweed (Lemna minor) to remove nitrate pollution from water and thus act as an organic and inexpensive way of combating eutrophication in water sources. Secondly, the relationship between nitrate concentration and rate of removal of nitrates by duckweed shall also be investigated. The duckweed is expected to absorb the nitrates as it grows and therefore lower the levels of nitrates in the water. In addition to this, the higher the concentration of nitrates, the faster the duckweed will grow
most duckweed fronds left and the lower the pH gets, the less duckweed survives. Acidity has an effect on the rate of photosynthesis because the enzymes required in the process of photosynthesis only function properly at a pH of between 6 and 8 (Egle & Brown, 2005). All the solutions in the experiment that had a pH of less than 6 did not allow the duckweed to survive or to be in a good condition, this is because the pH was too low for photosynthesis to take place which resulted in the duckweed dying
Mesocosm Design Lab (Practical #5) Anshul Krishnan : 11M Task: Design, set up, monitor and evaluate a sealed mesocosm, with a view to achieving a sustainable model. ———————————————————————————————————————— Defining The Problem: A Mesocosm is a designed natural environment which can be manipulated and can be controlled. The Main purpose of building a mesocosm is to be able to observe nature’s balance without human intervention; something that has been destroying our planet’s environment since