Trophic state

PO3− 4_ave.

(µg∙L⁻¹)

Chl “a”_ave.

(µg∙L⁻¹)

Chl “a”_max.

(µg∙L⁻¹)

Secchi_ave.

(m)

Secchi_min.

(m)

Oligotrophic

<10

<2.5

2.5 - 8

>6

>3

Mesotrophic

10 - 35

2.5 - 8

8 - 25

3 - 6

1.5 - 3

Eutrophic

35 - 100

8 - 25

25 - 75

1.5 - 3

0.7 - 1.5

Hypereutrophic

>100

>25

>75

<1.5

<0.7