Lifting of biogenic compounds by a riverbed from a municipal drainage basin on a day scale

Fortuniak, Anna; HaŁas, Krzysztof; Górecki, Michał; Szewczyk, Krzysztof W.; Wojtania, Angelika; Ziułkiewicz, Maciej

doi:10.1051/e3sconf/20184400042

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Its physical and chemical parameters, i.e., dissolved oxygen, pH, DOC 5 , total nitrogen, ammonium, nitrate, total phosphorus and phosphate content, confirms that from its origin, the stream is heavily polluted ( Table S1 ). The poor water condition of the stream has also been confirmed by other hydrobiological and physical and chemical analyses ( Bagrowicz et al, 2017 ; Fortuniak et al, 2018 ; Ziułkiewicz et al, 2019 ). Previous research using diatom indices also found both the spring section and the downstream range to be in poor ecological condition ( Szczepocka, Nowicka-Krawczyk & Kruk, 2018 ).…”

Section: Discussionmentioning

confidence: 54%

“…Due to its location, at the outskirts of the city, the stream was characterized by a high diversity of fish species and macroinvertebrates compared to other streams in Łódź. In addition, the hydrochemical conditions of the stream were also investigated in 2015 –2018 to determine the state of the stream using chemical markers ( Bagrowicz et al, 2017 ; Fortuniak et al, 2018 ; Ziułkiewicz et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

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Response of diatom assemblages to the disruption of the running water continuum in urban areas, and its consequences on bioassessment

Szczepocka

Nowicka-Krawczyk

Olszyński

et al. 2021

PeerJ

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Transformation of river and stream channels disrupts their natural ecological cycles and interrupts the continuum of their ecosystems. Changes in natural hydromorphological conditions transform lotic communities into those atypical of flowing waters, resulting in bioassessment procedures yielding incorrect results. This study shows how hydromorphological transformations of ecosystems affect the ecological status bioassessment results by disturbing diatom communities typical for rivers. Moreover, the article presents a new biological assessment procedure for urban transformed rivers including the verification of the community structure based on autecology and quantity of species. The ecological status of the ecosystem was assessed using benthic diatom assemblages and supported with results of hydrochemical analysis. The structure of the assemblages and their relationships between individual sampling sites were clarified by shade plot and multivariate data analyses. The analysis of dominant species vitality at sampling sites and their autecology gave the foundation for modification of taxa data matrix and recalculation the diatom indices. Biological assessment showed that one of the artificial ponds constructed at the stream channel was characterized by good ecological status, and its presence strongly affected the state of the downstream ecosystem following the development of a unique assemblage of diatoms that prefer oligosaprobic and oligotrophic waters. The presence of these species was also noted in the downstream sections, but most of the cells were dead. As the indicator values of these taxa are high, their presence artificially increased the ecological status of the stream, resulting in the hydrochemical assessment not being in line with the bioassessment. Therefore, a new procedure was adopted in which non-characteristic taxa for the downstream sections were excluded from analysis. This approach corrected the results of bioassessment characterizing the ecological status of the stream as poor along its entire course, with the exception of this unique pond. For hydromorphologically transformed streams and rivers with disturbed channel continuity, the correct result of an incorrect diatom-based bioassessment may be retrieved after excluding species unusual for the type of ecosystem from the studied assemblages, i.e., the species which are unable to reproduce in that area and are only carried into it by the water flow. Assessment of the ecological status of aquatic ecosystems based on biotic factors is an essential tool of aquatic ecosystems monitoring in many countries. This type of assessment requires a multifaceted approach, in particular, to identify factors that may disrupt this assessment. Standardization of biomonitoring methods is an important step in correct assessment; thus, the findings of this paper will be useful in routine biomonitoring around the world.

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Section: Discussionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Response of diatom assemblages to the disruption of the running water continuum in urban areas, and its consequences on bioassessment

Szczepocka

Nowicka-Krawczyk

Olszyński

et al. 2021

PeerJ

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24-hour nutrient mass balance of small storage reservoir included in municipal rainwater drainage system

et al. 2019

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The paper presents the results of research, which aimed at tracing the quantitative and qualitative effect of the ”Tomaszowska” urban retention reservoir (located in the Łódź city) on the Olechówka River flowing through it over a period of one day. For this purpose, two measurement-control points were established located directly above the inflow of river to the reservoir, and below the weir. Hydrological and hydrochemical measurements were performed every two hours. Results obtained in this research present the reservoir as an object that in terms of the inflowing river, among others, in a daily balance of pollutants retains mineral and biogenic compounds, and releases dissolved and suspended organic compounds, and also changes the structure of pollution (in the case of total dissolved solids and total nitrogen, increasing the contribution of their organic forms).

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Lifting of biogenic compounds by a riverbed from a municipal drainage basin on a day scale

Cited by 2 publications

References 6 publications

Response of diatom assemblages to the disruption of the running water continuum in urban areas, and its consequences on bioassessment

Response of diatom assemblages to the disruption of the running water continuum in urban areas, and its consequences on bioassessment

24-hour nutrient mass balance of small storage reservoir included in municipal rainwater drainage system

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