Today we want to discuss the aeration of the reservoir. Even with a very general knowledge of the ecosystem of water ponds/lakes, we know that additional oxygen is beneficial for the water body and its inhabitants. But to what extent and how much is it really needed? What happens if the amount of oxygen in the water is minimal or critical? What will be the consequences of low aeration for the reservoir and its inhabitants? How can the low oxygen situation be saved or even prevented?
We decided to deal with all the questions arising about aeration.
Aeration is the process of saturating water with oxygen. This can happen, for example, where there is a body of water with a flowing current or during rain, or it can be done with the help of special equipment. The methods and mechanisms can be different, the essence is the same – an increase in the amount of dissolved oxygen in water. Without the proper amount of oxygen in the reservoir, fish and other living organisms develop more slowly, because the composition (quality) of the water will have parameters that differ from the optimal ones.
A large number of studies have been carried out on the effect of oxygen saturation on the ecosystem of the reservoir and its inhabitants.
Here are some of them:
1. The Agricultural University of Bangladesh in 2017 conducted research “The effect of aeration on the growth and productivity of fish in the system of intensive aquaculture in earthen ponds” (translation) *
Conclusion: “Overall, aeration improved the dissolved oxygen content of the pond water and also showed a difference in water quality parameters between aerated and non-aerated ponds. Along with dissolved oxygen, other water quality parameters such as temperature, pH, nitrite, ammonia in ventilated ponds were within better limits for aquaculture compared to non-aerated ponds ”(translation) *.
2. The University of Mississippi, USA in 2006 published an article about “Pond Aeration” (translation) **
Conclusion: the article provides data on aeration, its methods and ways, how dissolved oxygen affects the reservoir, including how the operation of the aerator allows you to create mixing of water layers and other useful information.
** Original article – https://thefishsite.com/articles/pond-aeration
3. In Brazil, they set up an experiment in 1999, filling out the result in the article “The use of mechanical aeration and its effect on the water mass” (translation) ***
Conclusion: “Based on the data obtained from this experiment, it was possible to determine that aerators contribute to changes in limnological characteristics, increasing the oxygen saturation of the environment, leading to more significant changes in some biotic and abiotic variables” (translation) ***.
*** Original article – https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000100005
4. Government College of Lahore, Pakistan, staged an experience in 2005 – “The effect of aeration on water quality, fish growth and survival in aquaculture ponds” (translation) ****
Conclusion: “Total Fish Cost @ Rs. 70 per kg was
received from T1 (aerated ponds) in the amount of Rs 179,830, and Rs 35,700 from T2
(non-aerated ponds). Overall, Rs 144,130 more revenue from aerated
ponds (T1) when selling fish, compared to non-aerated ponds (T2). ” (transfer)****.
In other words, the income generated from aerated ponds was 80% higher than compare to the non-aerated ponds.
**** Original article – http://zsp.com.pk/pdf37/PJZ-17603.pdf
And this is only a small part of the data collected on the effect of aeration on the ecosystem of water bodies. We promise to do a comprehensive study on the benefits of aeration for the reservoir and present it in the next article – do not switch :).
Green Stream Team