Mountain aquatic Isoetes populations reflect millennial-scale environmental changes in the Bohemian Forest Ecosystem, Central Europe.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F21%3A00552460" target="_blank" >RIV/60077344:_____/21:00552460 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10436568

Výsledek na webu

<a href="https://doi.org/10.1177/0959683620988060" target="_blank" >https://doi.org/10.1177/0959683620988060</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/0959683620988060" target="_blank" >10.1177/0959683620988060</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mountain aquatic Isoetes populations reflect millennial-scale environmental changes in the Bohemian Forest Ecosystem, Central Europe.

Popis výsledku v původním jazyce

In this study we aim to investigate millennial-scale dynamics of Isoetes, a type of macrophyte well adapted to oligotrophic and clear-water lakes. Despite its wide distribution during the Early Holocene, nowadays Isoetes is considered as vulnerable or critically endangered in many Central European countries. Using a multi-proxy palaeoecological reconstruction involving Isoetes micro- and megaspores, pollen, plant macrofossils, macro-charcoal, diatoms and chironomids from four lakes (Prasilske jezero, Plesne jezero, Cerne jezero, Rachelsee) located in the Bohemian Forest Ecosystem mountain region in Central Europe, we reconstruct Isoetes dynamics and discuss how local environmental factors impacted its distribution and abundance during the Holocene. Our results show regionally concurrent patterns of Isoetes colonisation across all lakes beginning 10,300-9300 cal yr BP, and substantially declining around 6400 cal yr BP. Results from Prasilske jezero imply that Isoetes decline and collapse in this lake reflect gradual dystrophication that led to the browning of lake water. This is evidenced by a shift in diatom assemblages towards more acidophilous taxa dominated by Asterionella ralfsii and by a decrease in total chironomid abundance and taxa sensitive to low oxygen levels. Dystrophication of Prasilske jezero was linked with the immigration of the late-successional tree taxa (Picea abies and later Fagus sylvatica and Abies alba), peatland expansion, and decreasing fire activity. Multi-site comparison of pollen records suggest that these vegetation-related environmental changes were common for the whole region. Our study demonstrates the sensitivity of Isoetes to millennial-scale natural environmental changes within the surrounding lake catchment.

Název v anglickém jazyce

Mountain aquatic Isoetes populations reflect millennial-scale environmental changes in the Bohemian Forest Ecosystem, Central Europe.

Popis výsledku anglicky

In this study we aim to investigate millennial-scale dynamics of Isoetes, a type of macrophyte well adapted to oligotrophic and clear-water lakes. Despite its wide distribution during the Early Holocene, nowadays Isoetes is considered as vulnerable or critically endangered in many Central European countries. Using a multi-proxy palaeoecological reconstruction involving Isoetes micro- and megaspores, pollen, plant macrofossils, macro-charcoal, diatoms and chironomids from four lakes (Prasilske jezero, Plesne jezero, Cerne jezero, Rachelsee) located in the Bohemian Forest Ecosystem mountain region in Central Europe, we reconstruct Isoetes dynamics and discuss how local environmental factors impacted its distribution and abundance during the Holocene. Our results show regionally concurrent patterns of Isoetes colonisation across all lakes beginning 10,300-9300 cal yr BP, and substantially declining around 6400 cal yr BP. Results from Prasilske jezero imply that Isoetes decline and collapse in this lake reflect gradual dystrophication that led to the browning of lake water. This is evidenced by a shift in diatom assemblages towards more acidophilous taxa dominated by Asterionella ralfsii and by a decrease in total chironomid abundance and taxa sensitive to low oxygen levels. Dystrophication of Prasilske jezero was linked with the immigration of the late-successional tree taxa (Picea abies and later Fagus sylvatica and Abies alba), peatland expansion, and decreasing fire activity. Multi-site comparison of pollen records suggest that these vegetation-related environmental changes were common for the whole region. Our study demonstrates the sensitivity of Isoetes to millennial-scale natural environmental changes within the surrounding lake catchment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Holocene

ISSN

0959-6836

e-ISSN

1477-0911

Svazek periodika

31

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

746-759

Kód UT WoS článku

000638763700001

EID výsledku v databázi Scopus

2-s2.0-85099993771