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Distribution of the macrophyte communities in the Danube reflects river serial discontinuity
ID
Janauer, Georg A.
(
Author
),
ID
Germ, Mateja
(
Author
),
ID
Holcar, Matej
(
Author
),
ID
Zelnik, Igor
(
Author
),
ID
Gaberščik, Alenka
(
Author
), et al.
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MD5: DBF490DAABBFB2D7448E5F6CB7BB2944
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https://www.mdpi.com/2073-4441/13/7/918
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Abstract
The Danube is the second-longest river in Europe that is subjected to various man-made alterations, including those related to hydro-power plants. We surveyed and analyzed the presence and abundance of macrophytes in the main channel from 2582 river kilometers (rkm) to 171 rkm. We also assessed selected habitat parameters in the sampled river stretches. Sixty-eight different plant species were recorded along the entire course. Among neophytes, we found Elodea nuttallii, E. canadensis, Vallisneria spiralis and Azolla filiculoides. Based on similarity analysis, we distinguished 15 plant communities, most of which were defined as associations, which were classified into 5 alliances and represented three vegetation classes, namely vegetation of rooted hydrophytes Potamogetonetea, the vegetation of pleustophytes Lemnetea and vegetation of marshes Phragmitetea. The number and abundance of plant species, as well as plant communities recorded in single stretches, varied along the course. Canonical correspondence analysis (CCA) revealed that environmental parameters explained 21% of plant species composition. CCA runs with neophytes explained 41% of the variance, and current velocity, water transparency, species number and bank structure were significant variables. The present study revealed that the free-running sections of the river are poor in number and abundance of plant species, whereas impounded reaches mainly show an opposite result.
Language:
English
Keywords:
Danube
,
large river
,
macrophytes
,
neophytes
,
plant communities
,
distribution
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Year:
2021
Number of pages:
24 str.
Numbering:
Vol. 13, iss. 7, art. 918
PID:
20.500.12556/RUL-135011
UDC:
574
ISSN on article:
2073-4441
DOI:
10.3390/w13070918
COBISS.SI-ID:
58377987
Publication date in RUL:
17.02.2022
Views:
742
Downloads:
146
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Record is a part of a journal
Title:
Water
Shortened title:
Water
Publisher:
Molecular Diversity Preservation International - MDPI
ISSN:
2073-4441
COBISS.SI-ID:
36731653
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
01.04.2021
Secondary language
Language:
Slovenian
Keywords:
Donava
,
velike reke
,
makrofiti
,
neofiti
,
rastlinske združbe
,
razširjenost
Projects
Funder:
Other - Other funder or multiple funders
Funding programme:
Austrian Federal Ministry of Education, Sciences and Culture
Acronym:
MIDCC
Funder:
Other - Other funder or multiple funders
Funding programme:
Austrian Committee of the International Association for the Danube Research
Acronym:
MIDCC
Funder:
Other - Other funder or multiple funders
Funding programme:
Landesanstalt für Umweltschutz Baden-Württemberg
Funder:
Other - Other funder or multiple funders
Funding programme:
Regierungspräsidium Tübingen
Funder:
Other - Other funder or multiple funders
Funding programme:
Free State of Bavaria, Government
Funder:
Other - Other funder or multiple funders
Funding programme:
Austria, Agency for Water Management
Funder:
Other - Other funder or multiple funders
Funding programme:
VERBUND Hydro Power AG
Funder:
Other - Other funder or multiple funders
Funding programme:
Slovak Academy of Sciences, Grant Agency
Project number:
1/0004/11
Funder:
Other - Other funder or multiple funders
Funding programme:
Hungarian Scientific Research Grant—OTKA
Project number:
K106177
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0212
Name:
Biologija rastlin
Funder:
MESTD - Ministry of Education, Science and Technological Development of Republic of Serbia
Funding programme:
Integrated and Interdisciplinary Research (IIR or III)
Project number:
43002
Name:
Biosensing Technologies and Global System for Long-Term Research and Integrated Management of Ecosystems
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