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001-es BibID:BIBFORM071390
035-os BibID:(cikkazonosító)459
Első szerző:Molnár Attila (biológus)
Cím:Identification of floral relicts based on spatial distance of isolation / Attila Molnár, Zsolt Végvári, Béla Tóthmérész
Dátum:2017
ISSN:1999-4907
Megjegyzések:The identification of climatic relicts is seldom straightforward. These species are threatenedowing to current climatic trends, which underlines the importance of carrying out ecologicaland biogeographic investigations of them. Here we introduce a novel approach to improve theidentification of climatic relicts. We are focusing on thermophilic relict plants of the Pannonianbiogeographic region from the Holocene Thermal Maximum (HTM). We argue that a minimalmean annual temperature difference (MATD) of the HTM compared to the recent climate alloweda continuous northward expansion for the taxa investigated. We measured latitudinal distancesbetween the recent occurrences of relicts and those of the main distribution found further south.Regarding estimates for MATD (1.0?2.5 C), we only consider species with a distribution which has a150?350 km North-South gap, since a latitudinally directed distance can be translated into temperature,showing a poleward cooling trend. Of the 15 selected species, 12 were recorded with values of1.0?1.7 C MATD, and three with values of 1.8?2.5 C, some of which are presumably interglacialspecies. Woody species are over-represented among them (four species), using the Hungarian floraas a reference. The proposed method allows the prediction of potential climate-related changes in thefuture distribution of species, constrained by the topographic features of their habitats.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
thermal relicts
Holocene Thermal Maximum
Pannonian region
disjunction
Megjelenés:Forests. - 8 : 11 (2017), p. 1-13. -
További szerzők:Végvári Zsolt (1969-) (biológus) Tóthmérész Béla (1960-) (ökológus)
Pályázati támogatás:OTKA-116639
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