2015
Using multi-proxy palaeoecology to test a relict status of refugial populations of calcareous-fen species in the Western Carpathians
HÁJKOVÁ, Petra; Michal HORSÁK; Michal HÁJEK; Vlasta JANKOVSKÁ; Eva JAMRICHOVÁ et al.Základní údaje
Originální název
Using multi-proxy palaeoecology to test a relict status of refugial populations of calcareous-fen species in the Western Carpathians
Autoři
HÁJKOVÁ, Petra; Michal HORSÁK; Michal HÁJEK; Vlasta JANKOVSKÁ; Eva JAMRICHOVÁ a Jitka MOUTELÍKOVÁ ORCID
Vydání
The Holocene, 2015, 0959-6836
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.135
Kód RIV
RIV/00216224:14310/15:00081004
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000350760400012
EID Scopus
2-s2.0-84924859300
Klíčová slova anglicky
biodiversity; calcareous fen; climate; fossil record; Holocene extinction; Western Carpathians
Změněno: 16. 2. 2018 15:07, Mgr. Petra Hájková, Ph.D.
Anotace
V originále
The distribution pattern of relict and specialised species in calcareous fens was revealed to be non-stochastic, with ancient fens harbouring more of these species than younger ones. This phenomenon could be caused by long-lasting in situ survivals over millennia, but direct palaeoecological evidence is lacking. We addressed the question whether at least some ancient calcareous fens indeed retained open-fen patches throughout the Holocene, using a palaeoecological approach involving proxies with different taphonomies (pollen, vascular plants, bryophytes, molluscs). We identified three old fens in the Western Carpathians, where several postglacial relict species have recently been found, and we reconstructed their histories with respect to sedimentary processes, vegetation structure and dynamics of relict species. The development at all the sites started with a (semi)-open fen community dominated by sedges and brown mosses. The site with the highest recent number of relict species was reconstructed to harbour open patches continually since the late Glacial to the present, including the middle Holocene when open-fen patches were restricted. By contrast, at the site with the lowest recent number of relict species, a large sedimentary hiatus suggested peat mineralisation or erosion that prevented the survival of light-demanding species. At all the sites, characteristic snails of European Glacial periods occurred during fen initiation, but disappeared around the early/middle Holocene transition. The probability of a relict species being present in a modern fen community increases with fen age, but it also depends on the continual existence of open-fen patches and peat accumulation throughout the middle Holocene.
Návaznosti
| GAP504/11/0429, projekt VaV |
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| GAP504/11/0454, projekt VaV |
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