An ecology student is studying the abundance of two saltmarsh species, glasswort (Salicornia europaea) and sea lavender (Limonium vulgare), in two distinct zones of a saltmarsh: the Low Marsh (Zone A) and the Mid Marsh (Zone B).
The student uses a 0.25 m×0.25 m0.25\text{ m} \times 0.25\text{ m}0.25 m×0.25 m square quadrat to sample the plants. She takes five random quadrat samples in each zone.
The tables show the student's raw data and some calculated values:
| Plant species | Quadrat 1 | Quadrat 2 | Quadrat 3 | Quadrat 4 | Quadrat 5 | Average per quadrat | Average number per m2\text{m}^2m2 |
|---|---|---|---|---|---|---|---|
| Glasswort | 8 | 11 | 7 | 10 | 9 | 9.0 | 144.0 |
| Sea lavender | 1 | 0 | 2 | 1 | 1 | 1.0 | 16.0 |
| Plant species | Quadrat 1 | Quadrat 2 | Quadrat 3 | Quadrat 4 | Quadrat 5 | Average per quadrat | Average number per m2\text{m}^2m2 |
|---|---|---|---|---|---|---|---|
| Glasswort | 6 | 9 | 4 | 8 | 3 | ||
| Sea lavender | 5 | 7 | 8 | 6 | 9 | 7.0 | 112.0 |
Calculate the average (mean) number of glasswort plants per m2\text{m}^2m2 in Zone B. Show your working.