|
Table 4. Abundance of substrate types on patch
reefs in 1976 compared to 1996. Mean percent cover of plants, invertebrates and
non-living substrates and standard error of surveys on transects (inner. middle,
or outer) for each year are presented. The probability that samples are
different among years is given for a two-sample t-test. Values indicated by an
asterisk (*) are significant at alpha = 0.05
|
|
1976 |
1996 |
1976 |
1996 |
|
Taxa |
Inner |
Outer |
Inner |
Middle |
Outer |
Mean |
SE |
Mean |
SE |
P |
|
Plants |
|
|
|
|
|
|
|
|
|
|
|
Turf algae |
0.0 |
0.0 |
0.0 |
8.3 |
0.0 |
0.0 |
0.0 |
2.8 |
2.8 |
0.42 |
|
Encrusting coralline algae |
0.0 |
0.0 |
1.0 |
12.7 |
1.9 |
0.0 |
0.0 |
5.2 |
3.7 |
0.30 |
|
Porolithon onkedes
- live |
0.0 |
0.0 |
1.8 |
0.0 |
0.0 |
0.0 |
0.0 |
0.6 |
0.6 |
0.42 |
|
Porolithon onkedes
- dead |
0.0 |
0.0 |
2.4 |
0.0 |
0.0 |
0.0 |
0.0 |
0.8 |
0.8 |
0.42 |
|
Corals |
|
|
|
|
|
|
|
|
|
|
|
Cyphastrea
ocellina |
0.9 |
0.8 |
0.0 |
0.0 |
0.0 |
0.9 |
0.0 |
0.0 |
0.0 |
0.04* |
|
Lepastrea
bottae |
0.9 |
0.0 |
0.0 |
0.0 |
0.0 |
0.5 |
0.5 |
0.0 |
0.0 |
0.50 |
|
Montipora
patula |
0.0 |
3.8 |
0.0 |
0.0 |
0.0 |
1.9 |
1.9 |
0.0 |
0.0 |
0.50 |
|
Montipora
verrucosa |
5.5 |
8.8 |
0.3 |
0.9 |
0.0 |
7.2 |
1.7 |
0.4 |
0.3 |
0.14 |
|
Pavona varians |
0.9 |
0.8 |
0.0 |
0.0 |
0.0 |
0.9 |
0.0 |
0.0 |
0.0 |
0.04* |
|
Pocillopora
damnicornis |
0.0 |
0.0 |
0.8 |
0.0 |
0.0 |
0.0 |
0.0 |
0.3 |
0.3 |
0.42 |
|
Pocillopora
meandrina |
2.3 |
4.6 |
0.0 |
0.1 |
1.3 |
3.5 |
1.2 |
0.4 |
0.4 |
0.20 |
|
Porites compressa |
23.0 |
8.8 |
3.1 |
0.3 |
0.6 |
15.9 |
7.1 |
1.3 |
0.9 |
0.28 |
|
Porites lobata |
8.7 |
13.4 |
1.3 |
8.8 |
1.6 |
11.1 |
2.4 |
3.9 |
2.4 |
0.13 |
|
Porites
sp. |
3.7 |
0.0 |
0.0 |
0.0 |
0.0 |
1.9 |
1.9 |
0.0 |
0.0 |
0.50 |
|
Non-living substratum |
|
|
|
|
|
|
|
|
|
|
|
Dead coral |
8.1 |
23.0 |
59.1 |
56.4 |
47.2 |
15.6 |
7.5 |
54.2 |
3.6 |
0.07 |
|
Sand & Mud |
46.0 |
36.0 |
31.1 |
12.8 |
47.5 |
41.0 |
5.0 |
30.5 |
10.0 |
0.42 |
|
