RT Journal Article T1 Iberian acid peatlands: types, origin and general trends of development A1 Pontevedra Pombal, Francisco Xabier A1 Castro Fernández, Daniel A1 Carballeira Coego, Amable Rafael A1 Souto Souto, Martín A1 López Sáez, José Antonio A1 Pérez Díaz, Sebastián A1 Fraga Vila, María Isabel A1 Valcárcel Díaz, Marcos A1 García-Rodeja Gayoso, Eduardo K1 Chronology K1 Distribution of mires K1 Holocene K1 Iberian Peninsula K1 Peat accumulation AB In the present study we reviewed the genesis, development and classification of peatlands in the Iberian Peninsula by conducting chronostratigraphic analysis of 108 of these ecosystems. The findings are summarised as follows: 1. The region has a wide variety of peatlands which are classified according to their biogeochemical, geomorphological and ecological characteristics into different types of bogs and fens. 2. Most of the peatlands occur in the Atlantic region followed by the Mediterranean and Alpine regions. Fens are more widely distributed than bogs, and blanket and raised bogs are mainly found in the Eurosiberian biogeographical region. 3. In many of the fens, the last active peat-forming cycle occurred during the Late Holocene (43 %). In most of the bogs, the peat-forming cycle occurred in the Middle Holocene (70 %), although in a substantial proportion of blanket bogs these processes occurred in the Early Holocene (30 %). 4. The peat formed in the last active cycle is, on average, thicker in raised bogs (322 cm) than in blanket bogs (257 cm) and fens (156 cm). 5. Vertical peat accumulation rates varied between 16 and 30 yr cm-1 in more than 40 % of the peatlands. The accumulation rates differed significantly between the different types of peatlands and were highest in the raised bogs. The accumulation rates were very variable in the fens. 6. The genesis, evolution and types of Iberian peatlands are similar to those observed in peatlands in northern latitudes in Europe and North America PB International Mire Conservation Group and International Peat Society YR 2017 FD 2017 LK http://hdl.handle.net/10347/22285 UL http://hdl.handle.net/10347/22285 LA eng NO Pontevedra-Pombal, X., Castro, D., Carballeira, R., Souto, M., López-Sáez, J.A., Pérez-Díaz, S., Fraga, M.I., Valcárcel M., & García-Rodeja, E. (2017): Iberian acid peatlands: types, origin and general trends of development. Mires and Peat, 19(21), 1-19. (Online: http://www.mires-and-peat.net/pages/volumes/map19/map1921.php); 10.19189/MaP.2016.OMB.260 NO Our research has been made possible by the following project grants: INCITE09-200-019-PR(Xunta de Galicia Government); DESIRÈHAR2013-43701-P (Spanish Ministry of Economyand Competitiveness); and Relictflora-P11-RNM7033 (Excellence Research Projects Program fromthe Andalusian Government) DS Minerva RD 28 abr 2026