How a Sphagnum fuscum-dominated bog changed into a calcareous fen: the unique Holocene history of a Slovak spring-fed mire

0381626 - BÚ 2013 RIV GB eng J - Článek v odborném periodiku
Hájková, Petra - Grootjans, A.B. - Lamentowicz, M. - Rybníčková, E. - Madaras, M. - Opravilová, V. - Michaelis, D. - Hájek, Michal - Joosten, H. - Wolejko, L.
How a Sphagnum fuscum-dominated bog changed into a calcareous fen: the unique Holocene history of a Slovak spring-fed mire.
Journal of Quaternary Science. Roč. 27, č. 3 (2012), s. 233-243. ISSN 0267-8179. E-ISSN 1099-1417
Výzkumný záměr: CEZ:AV0Z60050516
Institucionální podpora: RVO:67985939
Klíčová slova: Holocene * succession * mire
Kód oboru RIV: EF - Botanika
Impakt faktor: 2.939, rok: 2012

Mires develop by autogenic succession from more groundwater-fed to more rainwater-fed. This study describes a similar development in the Early Holocene, followed by a reverse development in the Middle and Late Holocene. Pollen, macrofossil and testate amoeba analyses show that the site started as a minerotrophic open fen woodland. After 10 700 cal a BP autogenic succession led to the accumulation of at least 1 m of Sphagnum fuscum peat. Around 9000 cal a BP, as climate could no longer sustain a stable water regime, the bog desiccated and a fire broke out. The fire removed part of the peat layer and as a consequence relative water levels rose, leading to the establishment of a wet minerotrophic swamp carr. After 600 cal a BP, rapid peat accumulation with calcareous tufa formation resumed as a result of anthropogenic deforestation and hydrological changes in the catchment and resulting increased groundwater discharge.
Trvalý link: http://hdl.handle.net/11104/0212052