Gradients, species richness and biogeographical links of steppe grasslands in Western Podolia (Ukraine)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F19%3A00521726" target="_blank" >RIV/67985939:_____/19:00521726 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/19:43899765 RIV/00216224:14310/19:00112639 RIV/00027073:_____/19:N0000022

Výsledek na webu

<a href="http://hdl.handle.net/11104/0306317" target="_blank" >http://hdl.handle.net/11104/0306317</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1127/phyto/2019/0255" target="_blank" >10.1127/phyto/2019/0255</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gradients, species richness and biogeographical links of steppe grasslands in Western Podolia (Ukraine)

Popis výsledku v původním jazyce

Western Podolia is one of several regions in the Eurasian forest-steppe zone where diverse steppe vegetation has been relatively well preserved. Our aims were to describe compositional turnover of steppe vegetation along different environmental gradients, to identify the patterns of species richness and evenness across complete compositional gradients and to outline biogeographical links of Western Podolian forest-steppe, with the emphasis on the generally rare mesic steppe types. Study area: Western Podolia and adjacent regions of Western Ukraine. Methods: Two independent datasets of vegetation plots and environmental variables were classified using modified TWINSPAN and ordinated using DCA and CCA. Diagnostic, constant and dominant species were identified. Ecological elements were quantified using Didukh indicator values. Biogeographical analysis was based on an extensive review of literature and NMDS of species frequency data sourced from studies covering a large part of Central and Eastern Europe. Results: The main gradients in species composition correspond to ecological gradients of 1) topographically controlled moisture and nutrient availability and 2) disturbance and human impact. The first gradient ranges from low-productive dry stands dominated by narrow-leaved tufted grasses, through dry-mesic stands co-dominated by broad-leaved grasses and herbs, to highproductive dry-mesic to mesic stands co-dominated by tall herbs and broad-leaved grasses. The second gradient tends towards communities altered by intensive human use. Species richness of steppe grasslands may be extremely high and has a unimodal relationship with estimated productivity. It peaks at mesic sites, in places with high evenness of species abundances. Conclusions: The remaining steppe fragments in Western Podolia are nowadays partly burnt, partly grazed, rarely mown and partly unmanaged. They harbour a number of rare light-demanding species and species reaching their distributional limits within the study area. Exceptional diversity of the grasslands may originate from Early Holocene or Pleistocene forest-steppe communities.

Název v anglickém jazyce

Gradients, species richness and biogeographical links of steppe grasslands in Western Podolia (Ukraine)

Popis výsledku anglicky

Western Podolia is one of several regions in the Eurasian forest-steppe zone where diverse steppe vegetation has been relatively well preserved. Our aims were to describe compositional turnover of steppe vegetation along different environmental gradients, to identify the patterns of species richness and evenness across complete compositional gradients and to outline biogeographical links of Western Podolian forest-steppe, with the emphasis on the generally rare mesic steppe types. Study area: Western Podolia and adjacent regions of Western Ukraine. Methods: Two independent datasets of vegetation plots and environmental variables were classified using modified TWINSPAN and ordinated using DCA and CCA. Diagnostic, constant and dominant species were identified. Ecological elements were quantified using Didukh indicator values. Biogeographical analysis was based on an extensive review of literature and NMDS of species frequency data sourced from studies covering a large part of Central and Eastern Europe. Results: The main gradients in species composition correspond to ecological gradients of 1) topographically controlled moisture and nutrient availability and 2) disturbance and human impact. The first gradient ranges from low-productive dry stands dominated by narrow-leaved tufted grasses, through dry-mesic stands co-dominated by broad-leaved grasses and herbs, to highproductive dry-mesic to mesic stands co-dominated by tall herbs and broad-leaved grasses. The second gradient tends towards communities altered by intensive human use. Species richness of steppe grasslands may be extremely high and has a unimodal relationship with estimated productivity. It peaks at mesic sites, in places with high evenness of species abundances. Conclusions: The remaining steppe fragments in Western Podolia are nowadays partly burnt, partly grazed, rarely mown and partly unmanaged. They harbour a number of rare light-demanding species and species reaching their distributional limits within the study area. Exceptional diversity of the grasslands may originate from Early Holocene or Pleistocene forest-steppe communities.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Phytocoenologia

ISSN

0340-269X

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

19

Strana od-do

349-367

Kód UT WoS článku

000505180300002

EID výsledku v databázi Scopus

2-s2.0-85077707562