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A study of the repairing effect of Cabomba caroliniana on eutrophic water

Description: Red tides which is known as a kind of algae bloom,belongs to a type of marine disaster.It alternately appears on the Hac-Sá Beaches and the Cheoc-Van Beaches in Macau.It has a significant impact on the local residents as well as causing a lot of serious pollution to the ocean.In the light of this,we hope to purify the water source by using some common aquatic plants. In this study,we carried out an experiment on the algae-inhibiting properties of Cabomba caroliniana on the basis of the high incidence of the Red Tide phenomenon in Macau.The extraction and performance study of Cabomba caroliniana tissue were designed.Our purpose is based on the excessive reproduction speed of red tide algae,hence this experiment was carried out. Based on the algae-inhibiting properties of Cabomba caroliniana,the in-depth research on the inhibitory effect of Cabomba caroliniana can be the reference.It provides the basic gist for the biological control of Cabomba caroliniana and also the develop

Reason of choosing this topic Red tides which is known as a kind of algae bloom,belongs to a type of marine disaster.It alternately appears on the Hac-Sá Beaches and the Cheoc-Van Beaches in Macau.We hope to purify the water source by using some common aquatic plants. research background Inside the ocean, there are many phenomena called Red Tides. Due to the reproduction of zooplankton, the sea water is becoming red and yellow. Recent years, Red Tides have occurred in many sea areas. research purposes Red Tides, which belongs to a kind of sea disaster, also known as an Algae bloom.It frequently occurs at Hac Sa beach and Cheoc-Van beach.Its occurrence not only make a huge influence to the citizens nearby,but also increase the pollution to the sea.Therefore,we designed an experiment by collecting the component of Cabomba caroliniana.Our aim is to purify the water sources by some common hydrophyte. research process Growing the red-tide algae in different concentrations ‘s Cabomba caroliniana liquid.We can get the growth curve of the red-tide algae through recording the cell density.The result has shown that Cabomba caroliniana liquid has a strong inhibition on red-tide algae’s growth.After the experiment took place for four days,all of the algaes were died.Which means the liquid has direct killing effect under high concentration condition. experiment procedure preparation of Cabomba caroliniana liquid crash it through the machine add it into 250ml man-made sea water take Cabomba caroliniana liquid A as mother liquor.Plant the red-tide algae in the Erlenmeyer flask . during the observation shake the Erlenmeyer flask for 2-3 times everyday take the Cabomba caroliniana liquid B.Plant the red-tide algae. take the Cabomba caroliniana liquid C and divide it into different concentration solutions. test the cell density of red-tide algae everyday, get the growth curve from the record. Design ideas Red tides are increasing with the rapid growth of society.Ocean is a system which is important to all of the livings.When red tides occur it breaks the balance of the environmental system.Therefore,investigating the method to prevent the increase of red tides is needed. works performance From our experiment result we can get the curve graph of Cabomba caroliniana liquid’s inhibition.However,with the temperature growth,the usage of Cabomba caroliniana becomes lower.In conclusion,temperature affects the stability of the substance. Innovation Cabomba caroliniana has a strong vitality and fast growth cycle. If Cabomba caroliniana can repair the water source, that will give Cabomba caroliniana a higher usage, and can also save control Cabomba caroliniana’s budget, has the economy and environment meaning. compared with market products Aerators cost a lot and are not useful at the same time.It provides a living condition for red-tide algae using Cabomba caroliniana can inhibit the growth of red-tide algae.We can solve the pollution through this method.

Organisation: The Affiliated School of the University of Macau

Innovator(s): Sit Cho Lam Cheang Wai Lan Vong Un Tong Liu Zhi Xi Wong Weng Io

Category: Environment

Country: Macau SAR

Gold Award