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Statements

Subject Item
n2:RIV%2F00216208%3A11620%2F13%3A10172622%21RIV14-GA0-11620___
rdf:type
n4:Vysledek skos:Concept
rdfs:seeAlso
http://www.ibot.cas.cz/preslia/contents.html
dcterms:description
The main goal of this article is to summarize results of palaeoecological investigations of a classical and iconic site in the Czech Republic, the former Komoranske jezero lake. This lake persisted in north-western Bohemia from at least the Weichselian Late Glacial until quite recently. Pollen and palaeoalgological analyses of coccal green algae were carried out on several sedimentary sequences sampled within the framework of palaeobotanical and archaeological salvage research from 1970s to 1990s. The results are published here jointly for the first time. They make it possible to reconstruct both the lacustrine environment and upland vegetation in the wider surroundings of the lake. The Komoranske jezero lake in the late-glacial period was cold and oligotrophic. Its nutrient status gradually changed and became mesotrophic and dystrophic locally in the early Holocene and eutrophic from the Middle Holocene onwards. Unfortunately, big differences in geomorphology and environmental conditions together with long-distance (and likely even fluvial) transport of pollen make the reconstruction of upland vegetation somewhat difficult. Immigration of climatically demanding species into the area started already in the Preboreal period (before 8200 uncal. yr BP). Maximum expansion of broadleaved forests occurred in the Atlantic period (between 6000 and 7000 uncal. yr BP). At the same time, afforestation spreading from the lowlands (200 to 400 m altitude) up to the mountain ridges (around 1000 m a.s.l.) of the Krusne hory Mts attained its maximum level. Based on continually increased presence of non-arboreal pollen we hypothesize that open grassland biotopes (continental-type steppe vegetation) persisted in the wider region from the late glacial throughout the entire Holocene. First clear evidence of a human effect on vegetation in promoting expansion of secondary grasslands is dated in pollen diagrams to around 4000 uncal. yr BP (i.e. the Subboreal period). The main goal of this article is to summarize results of palaeoecological investigations of a classical and iconic site in the Czech Republic, the former Komoranske jezero lake. This lake persisted in north-western Bohemia from at least the Weichselian Late Glacial until quite recently. Pollen and palaeoalgological analyses of coccal green algae were carried out on several sedimentary sequences sampled within the framework of palaeobotanical and archaeological salvage research from 1970s to 1990s. The results are published here jointly for the first time. They make it possible to reconstruct both the lacustrine environment and upland vegetation in the wider surroundings of the lake. The Komoranske jezero lake in the late-glacial period was cold and oligotrophic. Its nutrient status gradually changed and became mesotrophic and dystrophic locally in the early Holocene and eutrophic from the Middle Holocene onwards. Unfortunately, big differences in geomorphology and environmental conditions together with long-distance (and likely even fluvial) transport of pollen make the reconstruction of upland vegetation somewhat difficult. Immigration of climatically demanding species into the area started already in the Preboreal period (before 8200 uncal. yr BP). Maximum expansion of broadleaved forests occurred in the Atlantic period (between 6000 and 7000 uncal. yr BP). At the same time, afforestation spreading from the lowlands (200 to 400 m altitude) up to the mountain ridges (around 1000 m a.s.l.) of the Krusne hory Mts attained its maximum level. Based on continually increased presence of non-arboreal pollen we hypothesize that open grassland biotopes (continental-type steppe vegetation) persisted in the wider region from the late glacial throughout the entire Holocene. First clear evidence of a human effect on vegetation in promoting expansion of secondary grasslands is dated in pollen diagrams to around 4000 uncal. yr BP (i.e. the Subboreal period).
dcterms:title
Reevaluation of the palaeoenvironmental record of the former Komoranske jezero lake: late-glacial and Holocene palaeolimnology and vegetation development in north-western Bohemia, Czech Republic Reevaluation of the palaeoenvironmental record of the former Komoranske jezero lake: late-glacial and Holocene palaeolimnology and vegetation development in north-western Bohemia, Czech Republic
skos:prefLabel
Reevaluation of the palaeoenvironmental record of the former Komoranske jezero lake: late-glacial and Holocene palaeolimnology and vegetation development in north-western Bohemia, Czech Republic Reevaluation of the palaeoenvironmental record of the former Komoranske jezero lake: late-glacial and Holocene palaeolimnology and vegetation development in north-western Bohemia, Czech Republic
skos:notation
RIV/00216208:11620/13:10172622!RIV14-GA0-11620___
n4:predkladatel
n10:orjk%3A11620
n3:aktivita
n15:I n15:P
n3:aktivity
I, P(GA13-08169S)
n3:cisloPeriodika
3
n3:dodaniDat
n5:2014
n3:domaciTvurceVysledku
n17:2910497
n3:druhVysledku
n14:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
101882
n3:idVysledku
RIV/00216208:11620/13:10172622
n3:jazykVysledku
n6:eng
n3:klicovaSlova
vegetation history; pollen analysis; palaeoecology; palaeoalgology; continental forest-steppe zone; central Europe
n3:klicoveSlovo
n8:palaeoecology n8:vegetation%20history n8:palaeoalgology n8:central%20Europe n8:continental%20forest-steppe%20zone n8:pollen%20analysis
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[BADF1591AE41]
n3:nazevZdroje
Preslia
n3:obor
n12:EH
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:projekt
n11:GA13-08169S
n3:rokUplatneniVysledku
n5:2013
n3:svazekPeriodika
85
n3:tvurceVysledku
Pokorný, Petr Jankovska, Vlasta
n3:wos
000325118300004
s:issn
0032-7786
s:numberOfPages
23
n20:organizacniJednotka
11620