Treeline shift under global change - ectomycorrhizas as a limiting factor?

0423984 - ÚVGZ 2014 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Vašutová, Martina - Holub, Filip - Čermák, Martin - Cudlín, Pavel
Treeline shift under global change - ectomycorrhizas as a limiting factor?
Global Change and Resilience: From Impacts to Responses : Proceedings of the 3rd annual Global Change and Resilience Conference. Brno: Global change research centre, Academy of Sciences of the Czech Republic, v. v. i, 2013 - (Stojanov, R.; Žalud, Z.; Cudlín, P.; Farda, A.; Urban, O.; Trnka, M.), s. 223-226. ISBN 978-80-904351-8-6.
[Global Change and Resilience. Brno (CZ), 22.05.2013-24.05.2013]
Grant CEP: GA MŠMT(CZ) ED1.1.00/02.0073; GA MŠMT(CZ) EE2.4.31.0056
Institucionální podpora: RVO:67179843
Klíčová slova: global change * ectomycorrhizas * treeline shift
Kód oboru RIV: EH - Ekologie - společenstva

It is assumed that global change will cause a treeline shift . Because competitive abilities and natural regeneration of trees are infl uenced by ectomycorrhizal (ECM) symbiosis and fi ne roots and ECM mycelia play a key role in belowground carbon turnover, we have studied the ECM associations of treeline ecosystems. We aim to fi nd out how resistant and resilient current ECM associations of these ecosystems are and whether the absence of appropriate ECM symbionts could be a limiting factor of an ecosystem shift . We have focused on natural mountain spruce forests and spruce forests on the treeline; dwarf pine stands with scattered spruce trees above the treeline will be studied in years to come. Ectomycorrhizas were described by morphological features and sequenced to identify fungal species. In the case of taxonomically complicated ECM fungal groups, sequences from microscopically identifi ed sporocarps were used for the identifi cation of ectomycorrhizas. A disproportion between ECM fungi diversity in spruce stands and dwarf pine stands revealed based on a literature review can indicate diff erent ectomycorrhiza patterns at the treeline. According to preliminary results from the Giant Mts. there is an adequate ECM fungal species diversity in mountain spruce forest and spruce forests on the treeline.
Trvalý link: http://hdl.handle.net/11104/0230114