Variability and classification of Carpathian calcium-rich fens:
breaking the state borders

J 2021

Variability and classification of Carpathian calcium-rich fens: breaking the state borders

HÁJEK, Michal; Petra HÁJKOVÁ; Irina GOIA; Daniel DÍTĚ; Vítězslav PLÁŠEK et. al.

Základní údaje

Originální název

Variability and classification of Carpathian calcium-rich fens: breaking the state borders

Název česky

Variabilita a klasifikace karpatských vápnitých slatiniš : boření státních hranic

Autoři

HÁJEK, Michal (203 Česká republika, garant, domácí); Petra HÁJKOVÁ (203 Česká republika, domácí); Irina GOIA; Daniel DÍTĚ a Vítězslav PLÁŠEK

Vydání

Preslia, Praha, Česká botanická společnost při AV ČR, 2021, 0032-7786

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10611 Plant sciences, botany

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.233

Kód RIV

RIV/00216224:14310/21:00119466

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.23855/preslia.2021.203

UT WoS

000682920200002

EID Scopus

2-s2.0-85111999913

Klíčová slova anglicky

calcareous fens; Caricion davallianae; climate; ecological indicator values; k-means; pH; Poland; Romania; semi-supervised and unsupervised classification; Slovakia; vegetation

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 3. 2022 08:57, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Calcareous and rich fens harbour the unique biodiversity of plants and invertebrates. They are extremely sensitive to landscape changes because of their island nature. In the Carpathians, they are still well-preserved, but their number has substantially decreased. Knowledge about their variability and classification into vegetation units, a baseline for efficient nature conservancy, is still insufficient in the Eastern Carpathians, where phytosociology has used different methodolo-gies than in the Western Carpathians. It has resulted in artificial boundaries in the distribution of vegetation types and low compatibility with modern European habitat classification schemes. Here we gathered a large set of vegetation-plot records, sampled by the unified sampling protocol. The aim was to uncover the principal variation in compositional data, identify resulting clusters with the hitherto reported vegetation units, and create the unified classification system adjusted for the entire Carpathian territory. In line with previous ecological studies, the unsupervised clas-sifications (Twinspan, beta-flexible clustering method) largely mirrored the base saturation gra-dient and distinguished between relict fens and younger fen grasslands. We defined formally the cores of 10 vegetation units well reproduced by unsupervised classifications and used them as prototypes in semi-supervised k-means clustering. The final 10 clusters essentially correspond with phytosociological associations, with five of them being reported for the first time for Roma-nia. These vegetation units were well-separated in the principal coordinate analysis, whose first axis separated relict fens from younger fen grasslands, while the second axis followed the water level gradient largely. Groundwater pH and conductivity contributed to forming significant compositional gradients. Climate (temperature, precipitation, number of hot days above 30 degrees C) and specific edaphic conditions contributed to the diversification of the vegetation types. Our analyses supported the classification of fen grasslands into both the tufa-forming and the peat-forming ones, belonging to different associations and Habitat Directive units, both occurring in all countries including Romania, rather than having a single separate Eastern-Carpathian associa-tion. We provide strong evidence for distinguishing the Sphagno warnstorfii-Tomentypnetalia order and its alliances Sphagno warnstorfii-Tomentypnion nitentis, Stygio-Caricion limosae and Saxifrago hirculi-Tomentypnion in Romania, the latter missing in other Carpathian countries. The final unified classification system will make Carpathian vegetation types of rich and calcareous fens applicable to continental habitat classification schemes.

Návaznosti

GA19-01775S, projekt VaV

Název: Současná a budoucí diverzita evropských slatinišť v měnícím se světě

Investor: Grantová agentura ČR, Současná a budoucí diverzita evropských slatinišť v měnícím se světě

GX19-28491X, projekt VaV

Název: Centrum pro evropské vegetační syntézy (CEVS) (Akronym: CEVS)

Investor: Grantová agentura ČR, Centrum pro evropské vegetační syntézy (CEVS)

Citovat

HÁJEK, Michal; Petra HÁJKOVÁ; Irina GOIA; Daniel DÍTĚ a Vítězslav PLÁŠEK. Variability and classification of Carpathian calcium-rich fens: breaking the state borders. Preslia. Praha: Česká botanická společnost při AV ČR, 2021, roč. 93, č. 3, s. 203-235. ISSN 0032-7786. Dostupné z: https://dx.doi.org/10.23855/preslia.2021.203.

@article{1813339,
   author = {Hájek, Michal and Hájková, Petra and Goia, Irina and Dítě, Daniel and Plášek, Vítězslav},
   article_location = {Praha},
   article_number = {3},
   doi = {http://dx.doi.org/10.23855/preslia.2021.203},
   keywords = {calcareous fens; Caricion davallianae; climate; ecological indicator values; k-means; pH; Poland; Romania; semi-supervised and unsupervised classification; Slovakia; vegetation},
   language = {eng},
   issn = {0032-7786},
   journal = {Preslia},
   title = {Variability and classification of Carpathian calcium-rich fens: breaking the state borders},
   url = {https://www.preslia.cz/article/pdf?id=2},
   volume = {93},
   year = {2021}
}

TY  - JOUR
ID  - 1813339
AU  - Hájek, Michal - Hájková, Petra - Goia, Irina - Dítě, Daniel - Plášek, Vítězslav
PY  - 2021
TI  - Variability and classification of Carpathian calcium-rich fens: breaking the state borders
JF  - Preslia
VL  - 93
IS  - 3
SP  - 203-235
EP  - 203-235
PB  - Česká botanická společnost při AV ČR
SN  - 00327786
KW  - calcareous fens
KW  - Caricion davallianae
KW  - climate
KW  - ecological indicator values
KW  - k-means
KW  - pH
KW  - Poland
KW  - Romania
KW  - semi-supervised and unsupervised classification
KW  - Slovakia
KW  - vegetation
UR  - https://www.preslia.cz/article/pdf?id=2
N2  - Calcareous and rich fens harbour the unique biodiversity of plants and invertebrates. They are extremely sensitive to landscape changes because of their island nature. In the Carpathians, they are still well-preserved, but their number has substantially decreased. Knowledge about their variability and classification into vegetation units, a baseline for efficient nature conservancy, is still insufficient in the Eastern Carpathians, where phytosociology has used different methodolo-gies than in the Western Carpathians. It has resulted in artificial boundaries in the distribution of vegetation types and low compatibility with modern European habitat classification schemes. Here we gathered a large set of vegetation-plot records, sampled by the unified sampling protocol. The aim was to uncover the principal variation in compositional data, identify resulting clusters with the hitherto reported vegetation units, and create the unified classification system adjusted for the entire Carpathian territory. In line with previous ecological studies, the unsupervised clas-sifications (Twinspan, beta-flexible clustering method) largely mirrored the base saturation gra-dient and distinguished between relict fens and younger fen grasslands. We defined formally the cores of 10 vegetation units well reproduced by unsupervised classifications and used them as prototypes in semi-supervised k-means clustering. The final 10 clusters essentially correspond with phytosociological associations, with five of them being reported for the first time for Roma-nia. These vegetation units were well-separated in the principal coordinate analysis, whose first axis separated relict fens from younger fen grasslands, while the second axis followed the water level gradient largely. Groundwater pH and conductivity contributed to forming significant compositional gradients. Climate (temperature, precipitation, number of hot days above 30 degrees C) and specific edaphic conditions contributed to the diversification of the vegetation types. Our analyses supported the classification of fen grasslands into both the tufa-forming and the peat-forming ones, belonging to different associations and Habitat Directive units, both occurring in all countries including Romania, rather than having a single separate Eastern-Carpathian associa-tion. We provide strong evidence for distinguishing the Sphagno warnstorfii-Tomentypnetalia order and its alliances Sphagno warnstorfii-Tomentypnion nitentis, Stygio-Caricion limosae and Saxifrago hirculi-Tomentypnion in Romania, the latter missing in other Carpathian countries. The final unified classification system will make Carpathian vegetation types of rich and calcareous fens applicable to continental habitat classification schemes.
ER  -

HÁJEK, Michal; Petra HÁJKOVÁ; Irina GOIA; Daniel DÍTĚ a Vítězslav PLÁŠEK. Variability and classification of Carpathian calcium-rich fens: breaking the state borders. \textit{Preslia}. Praha: Česká botanická společnost při AV ČR, 2021, roč.~93, č.~3, s.~203-235. ISSN~0032-7786. Dostupné z: https://dx.doi.org/10.23855/preslia.2021.203.

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