**3. Results**

### **3.1 Microalgae**

A total of 88 species belonging to five Divisions were found, being Bacillariophyta the most diverse Division with 35 species, followed by Chlorophyta Division with 27 species, while Euglenophyta, Cyanoprokaryota and Pyrrophyta Divisions had 16, 6, and 4 species respectively (**Figure 2**).

The sampling point with the highest number of species was the one located at 20 meters away from the dump, presenting 56 species, while the sampling point with the lowest quantity of species was the one located directly under the dump with only 16 species observed (**Figure 3**).

*Percentage of algae species by division found in the "Cerro de la Estrella" treatment plant dump.*

*Water Cleaning by Means of Microalgae in the Channels of Xochimilco, Mexico DOI: http://dx.doi.org/10.5772/intechopen.104711*

#### **Figure 3.** *Total number of species in the sampling points.*
