Table 4.
Summary of significant changes in cover over time for S. alterniflora, S. patens and bare ground in 21 individual plots in Coggeshall Marsh using data from three methods. In each case, linear regression was run to detect change using Bonferroni corrections within each species/method (n = 21; adjusted α = 0.0024).
| Plot # |
Spartina alterniflora |
Spartina patens |
Bare ground |
||||||
|---|---|---|---|---|---|---|---|---|---|
| PI | BB | FQA | PI | BB | FQA | PI | BB | FQA | |
| 1 | * | ||||||||
| 2 | * | * | * | * | * | * | |||
| 3 | |||||||||
| 4 | * | * | |||||||
| 5 | |||||||||
| 6 | * | * | * | * | * | ||||
| 7 | * | * | * | ||||||
| 8 | |||||||||
| 9 | * | ||||||||
| 10 | * | ||||||||
| 11 | |||||||||
| 12 | * | * | |||||||
| 13 | * | * | * | * | * | ||||
| 14 | * | * | * | * | * | ||||
| 15 | |||||||||
| 16 | |||||||||
| 17 | |||||||||
| 18 | |||||||||
| 19 | |||||||||
| 20 | * | * | * | ||||||
| 21 | |||||||||
*
indicates significant change over time at this significance level. PI = point-intercept, BB = Braun-Blanquet, and FQA = floristic quality assessment.