Chart on overall quadrate data
SPECIES TYPE |
QUADRATE SET I |
QUADRATE SET 2 |
QUADRATE SET 3 |
1 CASUARINA SP |
5 |
2 |
0 |
2 OPUNTIA SP |
2 |
0 |
4 |
3 CALOTROPIS SP |
1 |
0 |
0 |
4 AZADIRACHTA INDICA |
1 |
0 |
0 |
5 SUEDA MARITIMA |
0 |
0 |
1 |
6 SPINIFEX LITTOREUS |
0 |
0 |
3 |
7 GRASS |
18 |
19 |
0 |
8 OTU 1 |
1 |
0 |
0 |
9 OTU2 |
1 |
0 |
0 |
10 OTU3 |
2 |
0 |
0 |
11 OTU4 |
1 |
0 |
0 |
12 OTU5 |
2 |
0 |
0 |
13 OTU6 |
0 |
1 |
1 |
14 OTU7 |
0 |
3 |
0 |
15 OTU8 |
0 |
2 |
0 |
CALCULATIONS ON SPECIES DENSITY
Density– Density of a species occurring in a community is an expression of its numerical strength. It represents the no. of individuals of a species in any unit area. it gives an idea of the degree of competition. it is calculated as –
Density = total no. of individuals of the species in all quadrates divided by no. of quadrates in which that particular species is found.
SPECIES NAME |
SPECIES DENSITY |
DENSITY [total no. of individuals of the species in all quadrates ÷no. of quadrates in which that surveyed] |
1 CASUARINA SP |
7÷3 |
2.333 |
2 OPUNTIA SP |
6÷3 |
2 |
3 CALOTROPIS SP |
1÷3 |
0.33 |
4 AZADIRACHTA INDICA |
1÷3 |
0.33 |
5 SUEDA MARITIMA |
1÷3 |
0.33 |
6 SPINIFEX LITTOREUS |
3÷3 |
1 |
7 GRASS |
37÷3 |
12.33 |
8 OTU 1 |
1÷3 |
0.33 |
9 OTU2 |
1÷3 |
0.33 |
10 OTU3 |
2÷3 |
0.66 |
11 OTU4 |
1÷3 |
0.33 |
12 OTU5 |
2÷3 |
0.66 |
13 OTU6 |
2÷3 |
0.66 |
14 OTU7 |
3÷3 |
1 |
15 OTU8 |
2÷3 |
0.66 |
The above diagram showing the species density
Calculation on species abundance Abundance– It is the community refers to the no. Of individuals of that species per unit area. It is calculated by –
Abundance =( total no. of individuals in all quadrates) divided by( no. of quadrates in which the particular species is found )
SPECIES NAME |
SPECIES ABUNDANCE |
Abundance =( total no. of individuals in all quadrates) ÷( no. of quadrates in which the particular species is found] |
1 CASUARINA SP |
7÷2 |
3.5 |
2 OPUNTIA SP |
6÷2 |
3 |
3 CALOTROPIS SP |
1÷1 |
1 |
4 AZADIRACHTA INDICA |
1÷1 |
1 |
5 SUEDA MARITIMA |
1÷1 |
1 |
6 SPINIFEX LITTOREUS |
3÷1 |
3 |
7 GRASS |
37÷2 |
18.5 |
8 OTU 1 |
1÷1 |
1 |
9 OTU2 |
1÷1 |
1 |
10 OTU3 |
2÷1 |
2 |
11 OTU4 |
1÷1 |
1 |
12 OTU5 |
2÷1 |
2 |
13 OTU6 |
2÷2 |
1 |
14 OTU7 |
3÷1 |
3 |
15 OTU8 |
2÷1 |
2 |
The above diagram showing the species abundance