Vascular plant and bryophyte survey from a 33-year chronosequence on bare chalk, Dorset, 2019-2020

Vascular plant and bryophyte survey data from a 33-year chronosequence on bare chalk, used to investigate primary succession. The bare chalk plots were created from archaeological excavations on Down Farm, north Dorset, between the years 1986 and 2018, resulting in 13 different plots. The vascular plant survey was carried out in July 2019 using 50 cm x 50 cm quadrats. Quadrats were recorded every 1 m along a 16 m transect in each of the 13 plots. The bryophyte survey was carried out in February 2020 using 20 cm x 20 cm quadrats, along the same transects for 11 of the 13 plots.

裸白垩土上33年时间序列的维管植物与苔藓植物调查数据，用于研究原生演替（primary succession）。这些裸白垩土样地由1986年至2018年间在北多塞特（north Dorset）Down Farm的考古发掘创建，共形成13个不同样地。维管植物调查于2019年7月开展，采用50厘米×50厘米的样方（quadrats）；在13个样地的每条16米样带（transect）上，每1米记录一个样方。苔藓植物调查则于2020年2月进行，使用20厘米×20厘米的样方，且在13个样地中的11个采用了相同的样带。