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Epilithic diatom community shows a higher vulnerability of the River Sava to pollution during the winter
ID
Zelnik, Igor
(
Author
),
ID
Sušin, Tjaša
(
Author
)
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https://www.mdpi.com/1424-2818/12/12/465
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Abstract
The aim of the research was to investigate the influence of environmental factors on the structure of epilithic diatom communities in the Sava River from the source to the state border 220 km downstream. The river had numerous human influences along its course, such as municipal and industrial wastewater, agriculture, hydroelectric power plants, etc. The main objective of the research was to find out the influence of human pressure on the structure of the epilithic diatom community under winter and summer conditions. Winter and summer samples were taken at nine sites. At each sampling site, a set of abiotic factors was measured and another set of environmental parameters was evaluated. The analyses showed that nitrogen and phosphorus concentrations increased downstream. We identified 118 different species of diatoms. The most common taxa were Achnanthidium minutissimum and A. pyrenaicum. Planktonic species Cyclotella meneghiniana was only found in the samples of the lower part of the Sava, which is unusual for the epilithic community. The composition of the epilithic diatom community was significantly influenced by conductivity and water temperature, pH and distance from the source. The similarity between diatom communities closer to the source of the river was higher than between communities from the lower part of the Sava River. The values of the trophic and saprobic indices increased downstream and showed that the pollution of the river with nutrients and organic matter increases with the distance from the source. Both indices were significantly higher in winter and showed a more impaired river ecosystem during the winter.
Language:
English
Keywords:
periphyton
,
diatoms
,
Sava River
,
Slovenia
,
saprobic index
,
pollution of the rivers
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Year:
2020
Number of pages:
17 str.
Numbering:
Vol. 12, iss. 12, art. 465
PID:
20.500.12556/RUL-134832
UDC:
502
ISSN on article:
1424-2818
DOI:
10.3390/d12120465
COBISS.SI-ID:
41384707
Publication date in RUL:
03.02.2022
Views:
702
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136
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Record is a part of a journal
Title:
Diversity
Shortened title:
Diversity
Publisher:
MDPI
ISSN:
1424-2818
COBISS.SI-ID:
517523737
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:
05.12.2020
Secondary language
Language:
Slovenian
Keywords:
perifiton
,
diatomeje
,
kremenaste alge
,
onesnaževanje rek
,
saprobni indeks
,
reka Sava
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0212
Name:
Biologija rastlin
Funder:
ARRS - Slovenian Research Agency
Project number:
L4-9305
Name:
Lokalno pridelana ajda kot surovina za proizvodnjo kakovostnih živil
Funder:
Other - Other funder or multiple funders
Funding programme:
Slovenia, Ministry of Agriculture, Forestry and Food
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