Table 1.
Mean (± SD) dry bulk density (g cm−3), organic carbon content (Corg, %), organic matter content (OM, %), δ13C (‰), sediment grain-size < 0.016 mm, > 0.0.016 < 0.125 mm and > 0.5 mm (%) and soil organic carbon stocks (in 1 m-thick, kg Corg m−2) in seagrass soils from all cores studied in the different locations and regions in the Colombian Caribbean.
| Region | Location | Core ID | DBD (g cm−3) | Corg (%) | OM (%) | δ13C (‰) | < 0.016 mm (%) | > 0.016 < 0.125 mm (%) | > 0.5 mm | Soil Corg stock in 1 m-thick | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | (Mg Corg ha−1) | |||
| Alta Guajira | Cabo de la Vela | AGCV1 | 1.0 | 0.2 | 5.0 | 0.8 | 224 | ||||||||||
| AGCV2 | 1.0 | 0.0 | 4.9 | 0.7 | 246 | ||||||||||||
| AGCV3 | 0.9 | 0.0 | 4.2 | 0.6 | 203 | ||||||||||||
| AGCV4 | 1.1 | 0.1 | 4.5 | 1.8 | 279 | ||||||||||||
| AGCV5 | 0.9 | 0.0 | 6.2 | 0.9 | 329 | ||||||||||||
| Portete Bay | AGBP1 | 0.6 | 0.2 | 16.8 | 5.2 | 673 | |||||||||||
| AGBP2 | 0.4 | 0.2 | 14.8 | 4.7 | 344 | ||||||||||||
| AGBP3 | 0.7 | 0.1 | 10.7 | 5.0 | 470 | ||||||||||||
| AGBP4 | 0.6 | 0.1 | 10.3 | 2.8 | 369 | ||||||||||||
| AGBP5 | 0.7 | 0.1 | 5.7 | 0.1 | 235 | ||||||||||||
| Hondita Bay | AGBH1 | 0.8 | 0.0 | 10.3 | 3.6 | 415 | |||||||||||
| AGBH2 | 0.8 | 0.1 | 8.4 | 3.0 | 370 | ||||||||||||
| AGBH3 | 0.8 | 0.3 | 1.3 | 1.1 | 8.9 | 3.2 | − 21.4 | 1.3 | 16.7 | 5.7 | 41.5 | 12.5 | 11.8 | 14.9 | 266 | ||
| AGBH4 | 0.9 | 0.2 | 10.8 | 4.1 | 479 | ||||||||||||
| AGBH5 | 0.8 | 0.2 | 8.2 | 1.7 | 381 | ||||||||||||
| AGBH6 | 0.5 | 0.1 | 1.8 | 0.9 | 11.6 | 3.4 | − 20.3 | 2.0 | 45.6 | 2.0 | 52.0 | 1.9 | 0.0 | 0.0 | 206 | ||
| AGBH7 | 0.5 | 0.0 | 12.1 | 2.6 | 350 | ||||||||||||
| AGBH8 | 0.6 | 0.1 | 15.9 | 3.5 | 522 | ||||||||||||
| Media Guajira | Carrizal | MGCZ1 | 1.2 | 0.1 | 3.3 | 2.0 | 151 | ||||||||||
| MGCZ2 | 1.1 | 0.1 | 6.5 | 1.8 | 357 | ||||||||||||
| MGCZ3 | 1.1 | 0.3 | 5.2 | 1.2 | 258 | ||||||||||||
| MGCZ4 | 1.1 | 0.2 | 0.5 | 0.1 | 2.4 | 0.7 | − 21.5 | 0.6 | 4.8 | 0.1 | 64.9 | 1.9 | 1.2 | 2.3 | 108 | ||
| MGCZ5 | 1.1 | 0.1 | 2.9 | 0.6 | 153 | ||||||||||||
| MGCZ6 | 1.0 | 0.1 | 3.5 | 1.2 | 159 | ||||||||||||
| MGCZ7 | 0.9 | 0.2 | 3.6 | 4.1 | 130 | ||||||||||||
| MGCZ8 | 1.0 | 0.2 | 5.7 | 3.9 | 203 | ||||||||||||
| MGCZ9 | 1.1 | 0.1 | 5.3 | 0.9 | 252 | ||||||||||||
| MGCZ10 | 1.0 | 0.3 | 0.5 | 0.2 | 3.6 | 0.6 | − 20.0 | 0.9 | 3.4 | 1.7 | 71.0 | 18.3 | 2.3 | 6.4 | 145 | ||
| MGCZ11 | 1.0 | 0.0 | 5.6 | 2.5 | 309 | ||||||||||||
| MGCZ12 | 1.1 | 0.1 | 4.7 | 3.6 | 267 | ||||||||||||
| Musichi | MGMC1 | 1.2 | 0.3 | 0.6 | 0.1 | 3.2 | 1.9 | − 22.8 | 1.0 | 3.5 | 0.8 | 64.4 | 21.1 | 6.8 | 10.0 | 139 | |
| MGMC2 | 1.3 | 0.1 | 2.9 | 0.9 | 176 | ||||||||||||
| MGMC3 | 1.1 | 0.3 | 5.2 | 2.6 | 338 | ||||||||||||
| San Andrés | Mar Azul | SAMA1 | 0.6 | 0.1 | 1.5 | 0.5 | 7.6 | 2.8 | − 16.5 | 1.0 | 23.5 | 3.0 | 35.9 | 4.1 | 0.0 | 0.0 | 193 |
| SAMA2 | 0.7 | 0.1 | 7.5 | 0.9 | 251 | ||||||||||||
| SAMA3 | 0.7 | 0.1 | 5.9 | 0.8 | 209 | ||||||||||||
| Hooker Bay | SABH1 | 0.6 | 0.2 | 1.7 | 0.9 | 8.2 | 1.7 | − 15.3 | 1.4 | 10.8 | 3.6 | 33.4 | 6.7 | 17.6 | 11.3 | 206 | |
| SABH2 | 0.8 | 0.2 | 7.4 | 3.2 | 258 | ||||||||||||
| SABH3 | 0.8 | 0.2 | 5.6 | 4.0 | 179 | ||||||||||||
| Cotton Cay | SACC1 | 0.9 | 0.2 | 1.1 | 0.8 | 4.9 | 1.6 | − 17.2 | 1.1 | 5.7 | 5.9 | 15.6 | 11.9 | 41.9 | 19.4 | 197 | |
| SACC2 | 1.0 | 0.1 | 6.5 | 1.2 | 331 | ||||||||||||
| SACC3 | 1.1 | 0.1 | 5.9 | 1.1 | 343 | ||||||||||||
| Tayrona | Chengue Bay | SMCH1 | 0.7 | 0.1 | 6.4 | 3.1 | 217 | ||||||||||
| SMCH2 | 1.0 | 0.1 | 5.0 | 1.4 | 229 | ||||||||||||
| SMCH3 | 1.2 | 0.1 | 5.2 | 1.5 | 240 | ||||||||||||
| SMCH4 | 1.2 | 0.1 | 5.0 | 0.9 | 238 | ||||||||||||
| Cartagena | La Virgen | CLV1 | 0.8 | 0.0 | 5.2 | 0.0 | 2.4 | 0.9 | 11.5 | 1.1 | 44.4 | 8.4 | 148 | ||||
| CLV2 | 0.8 | 0.1 | 7.1 | 3.2 | 3.1 | 1.1 | 12.1 | 1.1 | 38.1 | 10.6 | 219 | ||||||
| CLV3 | 0.7 | 0.0 | 5.2 | 0.3 | 1.6 | 1.0 | 10.0 | 2.1 | 43.6 | 10.0 | 138 | ||||||
| Tierra Bomba | CTTB1 | 0.9 | 0.1 | 5.3 | 0.9 | 8.5 | 5.0 | 28.4 | 14.8 | 25.6 | 12.9 | 168 | |||||
| CTTB2 | 0.9 | 0.0 | 5.8 | 0.8 | 9.5 | 4.8 | 25.8 | 13.3 | 29.8 | 10.7 | 184 | ||||||
| CTTB3 | 1.0 | 0.0 | 4.8 | 1.2 | 6.6 | 5.2 | 21.1 | 16.6 | 28.6 | 16.7 | 162 | ||||||
| Punta Arena | CTPA1 | 0.8 | 0.0 | 4.1 | 0.3 | 0.2 | 0.5 | 6.8 | 3.8 | 47.6 | 7.7 | 119 | |||||
| CTPA2 | 1.1 | 0.0 | 4.4 | 0.3 | 0.9 | 1.2 | 8.6 | 4.4 | 42.8 | 8.4 | 159 | ||||||
| CTPA3 | 0.9 | 0.0 | 4.2 | 0.3 | 0.9 | 1.2 | 8.2 | 3.4 | 44.8 | 2.8 | 142 | ||||||
| Cocon Bay | CTBC1 | 0.9 | 0.1 | 4.5 | 0.8 | 0.0 | 0.0 | 2.7 | 3.2 | 62.9 | 6.7 | 141 | |||||
| CTBC2 | 1.2 | 0.1 | 4.6 | 0.2 | 0.4 | 0.6 | 6.7 | 1.9 | 45.3 | 14.5 | 200 | ||||||
| CTBC3 | 1.4 | 0.0 | 4.4 | 0.8 | 0.5 | 0.5 | 8.2 | 4.2 | 59.0 | 12.5 | 226 | ||||||
| Bocagrande | CTBG1 | 1.3 | 0.0 | 1.4 | 0.2 | 0.0 | 0.0 | 6.4 | 1.4 | 33.0 | 8.3 | 39 | |||||
| CTBG2 | 1.3 | 0.1 | 1.3 | 0.1 | 0.0 | 0.0 | 8.1 | 2.3 | 23.3 | 10.8 | 40 | ||||||
| CTBG3 | 1.9 | 0.5 | 1.0 | 0.2 | 0.0 | 0.0 | 5.1 | 2.9 | 31.0 | 6.5 | 40 | ||||||
| OVERALL | 0.9 | 0.3 | 1.2 | 0.9 | 6.6 | 4.0 | − 19.4 | 2.8 | 11.1 | 13.7 | 33.5 | 23.9 | 21.2 | 21.5 | 241 ± 117 | ||