Factors Affecting Composition of Gravel Bar Vegetation in Middle Reach of a Lowland River

• Autorzy: Škornik S. , Meznarič M. , Kaligarič M.

Identyfikatory

DOI

10.3161/15052249PJE2017.65.2.003

• Języki publikacji: EN

Abstrakty

EN

In this study, we investigated plant communities in relation to site-specific morphological properties and sediment structure on gravel bars along the middle Drava River in Slovenia. We sampled 143 plots of 5 × 5 m using species cover-abundance estimates. In addition, we considered the following habitat physical variables: elevation above the water line, texture of the substrate (silt, sand, gravel content) and bar age. Based on TWINSPAN method, we distinguished four vegetation types: (G1) xerophilic and thermophilic ruderal stage; (G2) stage with sparse and herb-rich ruderal vegetation with species of semi-dry grasslands; (G3) initial vegetation stage of frequently disturbed mesotrophic and eutrophic sites and (G4) tall-willow stage. The most important factors determining a bar's vegetation were elevation and gravel content. Our study shows that gravel bars of the middle Drava river system form a suitable habitats for species-rich plant communities. Their diversity is a function of high spatial heterogeneity coupled with the opposing forces of stress and disturbance.

Słowa kluczowe

EN

river ecosystems; plant diversity ordination; flood disturbance

PL

ekosystem rzeczny; różnorodność roślin; anomalie powodziowe

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2017
• Tom: Vol. 65, nr 2
• Strony: 194--210
• Opis fizyczny: Bibliogr. 57 poz., fot., rys., tab., wykr.

Twórcy

autor

Škornik S.

• Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, SI-2000 Maribor, Koroška 160, Slovenia

autor

Meznarič M.

• Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, SI-2000 Maribor, Koroška 160, Slovenia

autor

Kaligarič M.

• Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, SI-2000 Maribor, Koroška 160, Slovenia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).