Table 1. Hyperdominance of stem abundance and carbon cycling in the Amazon.
|
Full data set |
Productivity data set |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Plots | Species |
No. of hyperdominants (%) |
Plots | Species |
No. of hyperdominants (%) |
||||
| Stems | Biomass | Stems | Biomass | Productivity* | |||||
| Amazon-wide | 530 | 3,458 | 283 (8.2) | 182 (5.3) | 221 | 2,965 | 250 (8.4) | 160 (5.4) | 184 (6.4) |
| Northwestern | 123 | 1,632 | 199 (12.2) | 170 (10.4) | 33 | 1,412 | 162 (11.5) | 138 (9.8) | 115 (8.4) |
| Southwestern | 169 | 1,330 | 60 (4.5) | 64 (4.8) | 59 | 1,185 | 62 (5.2) | 62 (5.2) | 66 (5.8) |
| Guiana Shield | 116 | 1,262 | 131 (10.4) | 62 (4.9) | 49 | 748 | 92 (12.3) | 36 (4.8) | 52 (7.1) |
| East-Central | 69 | 1,386 | 157 (11.3) | 101 (7.3) | 56 | 1,317 | 152 (11.5) | 96 (7.3) | 117 (9.1) |
| Brazilian Shield | 53 | 890 | 82 (9.2) | 55 (6.2) | 26 | 698 | 39 (5.6) | 23 (3.3) | 30 (4.5) |
Number and percentage of species that contribute 50% of stem numbers, aboveground biomass and aboveground productivity for the whole data set and split by region.
*If a tree dies before the second census, it will contribute to biomass and stems but will not have a productivity value, hence the percentage value is calculated from a slightly smaller total number of species (2,883).