J 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

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

Štítky

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
Název: Gradienty prostředí, vegetační dynamika a krajinné změny v Západních Karpatech od pozdního glaciálu po současnost (Akronym: PALAEO-CARPATHIANS)
Investor: Grantová agentura ČR, Environmental gradients, vegetation dynamics and landscape changes in the West Carpathians from the Late Glacial up to the present time
GAP504/11/0454, projekt VaV
Název: Změny biodiverzity na přechodu pleistocénu a holocénu: současné analogie v reliktních ekosystémech Sibiře
Investor: Grantová agentura ČR, Změny biodiverzity na přechodu pleistocénu a holocénu: současné analogie v reliktních ekosystémech Sibiře