Table 1 in Petrel extinction in Macaronesia (North-East Atlantic Ocean): the case of the genus Pterodroma (Aves: Procellariiformes: Procellariidae)

Table 1. Radiocarbon ages (yr BP) of gadfly petrels (genus Pterodroma) and two 2σ calibration intervals (cal BCE/cal CE). The two 2σ calibration intervals have been performed (i) using the Marine20 calibration curve and, (ii) using the Marine20 calibration curve with a ∆ R ± SD calculated from the 20 closer samples to each archipelago (18 ± 141 for Madeira and 38 ± 139 for Azores) through the Marine Reservoir Correction Database (http://calib.org/marine/). (A), Azores; (M), Madeira Archipelago.
Lab codeIslandSampleδ 13 C (o/oo)δ 15 N (o/oo)Radiocarbon age2σ2σ ∆R ± SDRICH-21397Pico (A)Pt. zinorum–13.8*13.51181 ± 30 BP1254–1467 cal CE1104–1672 cal CERICH-21398Pico (A)Pterodroma sp. B–14.0*14.61654 ± 30 BP760–1045 cal CE665–1263 cal CEWK-28566Porto Santo (M)Pterodroma sp. A–13.47113 ± 37 BP5607–5328 cal BCE5739–5115 cal BCE