ORIGINAL RESEARCH
Temporal and Spatial Variations of Trophic Status
of a Small Lowland River
| 1 | Department of Ecology and Environmental Protection, Poznań University of Life Sciences Piątkowska 94 Gate C, 60-649 Poznań, Poland |
| 2 | Institute of Land Improvement, Environmental Development and Geodesy, Poznań University of Life Sciences Piątkowska 94 Gate E, 60-649 Poznań, Poland |
| 3 | CEH Wallingford, Maclean Building, Crowmarsh Gifford, Wallingford, Oxfordshire OX10, 8BB UK |
CORRESPONDING AUTHOR
Ryszard Staniszewski
Dept. of Ecology and Environmental Protection, Poznań University of Life Sciences, Department of Ecology and Environmental Protection, Piątkowska 94 Gate C, 60-649 Poznań, Piątkowska 94 gate C, 60-649 Poznan, Poland
Dept. of Ecology and Environmental Protection, Poznań University of Life Sciences, Department of Ecology and Environmental Protection, Piątkowska 94 Gate C, 60-649 Poznań, Piątkowska 94 gate C, 60-649 Poznan, Poland
Submission date: 2017-08-24
Final revision date: 2017-10-24
Acceptance date: 2017-10-29
Online publication date: 2018-07-31
Publication date: 2018-11-20
Pol. J. Environ. Stud. 2019;28(1):329–336
KEYWORDS
TOPICS
ABSTRACT
The research area was situated in Kujawskie Lakeland (central Poland), where agricultural landscape,
arable lands, and improved grasslands prevail. River water samples for physico-chemical analyses were
collected in the years 1999, 2006, and 2010, together with macrophyte data. All studied sites were localised
in the rural landscape with insignificant impact of shading on the structure of aquatic taxa. The analysis
of temporal changes in the taxonomic composition of macrophytes was performed with linear indirect
PCA ordination. Evaluation of the trophic status of the Noteć River was performed using different
macrophyte metrics and the chemical index of trophy. There were not significant temporal shifts of the
trophic level of studied sites evaluated both using macrophyte metrics and hydrochemical index, but
particular physico-chemical parameters like total phosphorus, soluble reactive phosphates, conductivity,
and pH reaction showed statistically significant temporal changes. Significant difference of trophic states
between sites localised below lakes and the others was observed for all years.
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