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Ryszard Staniszewski
Department of Ecology and Environmental Protection, Poznan University of Life Sciences, Piatkowska 94C, 60-649 Poznan, Poland

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Journal article
Published: 03 August 2021 in Energies
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Financial liquidity and profitability are two critical phenomena present in the financial economy of a company, whose relations depend on each other and may course in different directions. At the same time, they are an example of the complexity of the problem, which demands a proper approach, allowing one to reconcile two opposing objectives of any enterprise, i.e., maximizing the benefits for the owners and minimizing the risk of losing financial liquidity. Until now, the relationship between liquidity and profitability has not been examined explicitly, using multidimensional methods in particular. Nevertheless, the links between profitability and financial liquidity maintenance ensure the sustainable development of enterprises in different branches. This paper formulates two aims: scientific and practical. The scientific one concerns adopting the canonical variate analysis method to visualize the differences and relationships between food industry companies regarding financial liquidity and profitability. The practical one relates to indicating the relationship between financial liquidity and profitability in different groups of food industry companies. To study the relationships between the selected groups of enterprises and describe them, the liquidity and profitability ratios were utilized, involving canonical variate analysis based on transformation by linear combination and singular value decomposition. The analysis found that the most important feature highlighting the group of the examined entities regarding financial liquidity was the cash conversion cycle. The research results showed the existence of multidirectional relationships between liquidity and profitability. The research indicates that they depend on indicators describing financial dependencies and the industries in which they operate. This led to a much deeper and broader interpretation of the assessment of the financial situation of companies to support their sustainable development.

ACS Style

Dorota Czerwińska-Kayzer; Joanna Florek; Ryszard Staniszewski; Dariusz Kayzer. Application of Canonical Variate Analysis to Compare Different Groups of Food Industry Companies in Terms of Financial Liquidity and Profitability. Energies 2021, 14, 4701 .

AMA Style

Dorota Czerwińska-Kayzer, Joanna Florek, Ryszard Staniszewski, Dariusz Kayzer. Application of Canonical Variate Analysis to Compare Different Groups of Food Industry Companies in Terms of Financial Liquidity and Profitability. Energies. 2021; 14 (15):4701.

Chicago/Turabian Style

Dorota Czerwińska-Kayzer; Joanna Florek; Ryszard Staniszewski; Dariusz Kayzer. 2021. "Application of Canonical Variate Analysis to Compare Different Groups of Food Industry Companies in Terms of Financial Liquidity and Profitability." Energies 14, no. 15: 4701.

Journal article
Published: 15 June 2021 in Energies
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Open-pit mines can cause environmental changes, such as alterations of landscape structure, hydrology, air quality, and river sediments; they can also generate cones of depression. We propose a new method for surveys of mine waters using the example of an open-pit mine in central Poland. This study examines the correlations between bioluminescence and the color of brown coal mine waters and tests whether values of the three-color coordinate system reflected the physicochemical quality of mine waters measured in real-time and in the field. Our results show that alkalinity, pH reaction, and conductivity are higher in surface drainage, while values of trophic parameters (soluble reactive phosphates, total phosphorus, nitrates) are greater in samples representing subsurface drainage. Correlation analysis of bioluminescence with mine water quality parameters showed that only water color had a strong association with bioluminescence. This correlation is stronger for surface drainage, than for mine waters from subsurface drainage. Direct measurement of bioluminescence, resulting from adenosine 5`-triphosphate (ATP) using a luminometer, is a fast and reliable method for evaluation of the characteristics of mine waters in real-time.

ACS Style

Ryszard Staniszewski; Dorota Cais-Sokolińska; Łukasz Kaczyński; Paulina Bielska. Use of Bioluminescence for Monitoring Brown Coal Mine Waters from Deep and Surface Drainage. Energies 2021, 14, 3558 .

AMA Style

Ryszard Staniszewski, Dorota Cais-Sokolińska, Łukasz Kaczyński, Paulina Bielska. Use of Bioluminescence for Monitoring Brown Coal Mine Waters from Deep and Surface Drainage. Energies. 2021; 14 (12):3558.

Chicago/Turabian Style

Ryszard Staniszewski; Dorota Cais-Sokolińska; Łukasz Kaczyński; Paulina Bielska. 2021. "Use of Bioluminescence for Monitoring Brown Coal Mine Waters from Deep and Surface Drainage." Energies 14, no. 12: 3558.

Journal article
Published: 06 May 2021 in Applied Sciences
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According to regulations in some European countries, peat is treated as a fossil fuel or soil for mushroom horticulture and its management is subject to the law for mining activities. As a result of the exploitation of peat bogs, the cutaway or pit lakes remain, which when properly prepared can be local water resources. Such post-peat water bodies can be used for recreation and they can be particularly important in areas struggling with water deficiency in the rural landscape. Maintaining good water quality in such reservoirs requires a number of preparatory works, including the removal of the remaining organic matter that would rest at the bottom of the new pit lake, affecting the water quality. Studies of water quality and aquatic plant communities in the studied post-peat lake were carried out during the period 2012–2014 in order to determine the changes in water quality and the usefulness of water for cyprinids. Aquatic plant communities identified in the reservoir showed a simplified species composition, characteristic of initial communities, and they occupied small areas in the water and on the banks. It has been shown that water quality parameters of the studied water body were stable and corresponded to thresholds established for cyprinids.

ACS Style

Ryszard Staniszewski; Przemysław Frankowski; Dariusz Kayzer; Janina Zbierska; Krzysztof Achtenberg. Reconstruction of Ancient Lake after Peat Excavation—A Case Study about Water Quality. Applied Sciences 2021, 11, 4213 .

AMA Style

Ryszard Staniszewski, Przemysław Frankowski, Dariusz Kayzer, Janina Zbierska, Krzysztof Achtenberg. Reconstruction of Ancient Lake after Peat Excavation—A Case Study about Water Quality. Applied Sciences. 2021; 11 (9):4213.

Chicago/Turabian Style

Ryszard Staniszewski; Przemysław Frankowski; Dariusz Kayzer; Janina Zbierska; Krzysztof Achtenberg. 2021. "Reconstruction of Ancient Lake after Peat Excavation—A Case Study about Water Quality." Applied Sciences 11, no. 9: 4213.

Journal article
Published: 28 May 2019 in Polish Journal of Environmental Studies
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The paper presents an assessment of the effect of three water reservoirs near the Nienawiszcz village (Western Poland) on the improvement of landscape structure and stability. The reservoirs were reconstructed in the years 1999-2012 in places where ponds and post-glacial lake were present in the past. A number of works were also carried out to organise and enrich the landscape around studied area, which is a part of real estate. The research carried out in the years 2013-2015 included valorisation of the natural environment, determination of the ecological and spatial model of the landscape and assessment of landscape stability according to the criterion of the connection network. Valorisation of the natural environment has shown the dominance of areas with outstanding and high natural values (class I and II). Regenerated water reservoirs and wood plantings increased the number and diversity of landscape islands and the connections between them, which additionally improved the stability of the landscape. Water reservoirs and numerous landscape activities in this area significantly influenced the increase of biological diversity as well as the diversity and functionality of the landscape.

ACS Style

Przemysław Frankowski; Janina Zbierska; Ryszard Staniszewski; Dariusz Kayzer. Effect of Newly Created Water Reservoirs on Agricultural Landscape Stability. Polish Journal of Environmental Studies 2019, 28, 3173 -3178.

AMA Style

Przemysław Frankowski, Janina Zbierska, Ryszard Staniszewski, Dariusz Kayzer. Effect of Newly Created Water Reservoirs on Agricultural Landscape Stability. Polish Journal of Environmental Studies. 2019; 28 (5):3173-3178.

Chicago/Turabian Style

Przemysław Frankowski; Janina Zbierska; Ryszard Staniszewski; Dariusz Kayzer. 2019. "Effect of Newly Created Water Reservoirs on Agricultural Landscape Stability." Polish Journal of Environmental Studies 28, no. 5: 3173-3178.

Journal article
Published: 28 January 2019 in Polish Journal of Environmental Studies
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Studies of the impact of river shading on biological diversity of aquatic plants were carried out in central and western parts of the Polish Lowlands. Data was collected during field surveys in 2003 to 2010. Studied rivers represented watercourses with small and average watershed areas according...

ACS Style

Szymon Jusik; Ryszard Staniszewski. Shading of River Channels as an Important Factor Reducing Macrophyte Biodiversity. Polish Journal of Environmental Studies 2019, 28, 1215 -1222.

AMA Style

Szymon Jusik, Ryszard Staniszewski. Shading of River Channels as an Important Factor Reducing Macrophyte Biodiversity. Polish Journal of Environmental Studies. 2019; 28 (3):1215-1222.

Chicago/Turabian Style

Szymon Jusik; Ryszard Staniszewski. 2019. "Shading of River Channels as an Important Factor Reducing Macrophyte Biodiversity." Polish Journal of Environmental Studies 28, no. 3: 1215-1222.

Journal article
Published: 20 November 2018 in Polish Journal of Environmental Studies
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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.

ACS Style

Ryszard Staniszewski; Szymon Jusik; Klaudia Borowiak; Jerzy Bykowski; F. Hugh Dawson. Temporal and Spatial Variations of Trophic Status of a Small Lowland River. Polish Journal of Environmental Studies 2018, 28, 329 -336.

AMA Style

Ryszard Staniszewski, Szymon Jusik, Klaudia Borowiak, Jerzy Bykowski, F. Hugh Dawson. Temporal and Spatial Variations of Trophic Status of a Small Lowland River. Polish Journal of Environmental Studies. 2018; 28 (1):329-336.

Chicago/Turabian Style

Ryszard Staniszewski; Szymon Jusik; Klaudia Borowiak; Jerzy Bykowski; F. Hugh Dawson. 2018. "Temporal and Spatial Variations of Trophic Status of a Small Lowland River." Polish Journal of Environmental Studies 28, no. 1: 329-336.

Conference paper
Published: 07 November 2018 in ITM Web of Conferences
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Wielkopolska region has precipitation below country average and water shortage is especially visible during spring and summer, thus regeneration of water bodies play important role in saving of water reserves in rural areas. The newly built water reservoir is located in Nienawiszcz, Rogoźno commune, Poland. The aim of study was to compare experimental sites according to parameters describing water trophy like chlorophyll a, dry mass of seston, total organic carbon, biochemical oxygen demand and according to concentrations of nitrogen and phosphorus compounds. Sites were compared using location in reservoir and year season. In the year 2014 (after connection of both parts of lake) part A and B of reservoir had similar trophic conditions, thus confirming stabilisation of the reservoir as an initial freshwater ecosystem. Water table level was also stable, thus low average water depth was not affected water quality Based on canonical variates analysis it was showed, that changes of nitrates and total nitrogen concentrations strongly affected the variability of experimental objects in comparison to concentrations of nitrites and total phosphorus. In the year 2014, after connection of both parts A and B the reservoir start to stabilise in case of similarity of water quality parameters in surveyed sites.

ACS Style

Dariusz Kayzer; Przemysław Frankowski; Janina Zbierska; Ryszard Staniszewski. Evaluation of trophic parameters in newly built reservoir using canonical variates analysis. ITM Web of Conferences 2018, 23, 00019 .

AMA Style

Dariusz Kayzer, Przemysław Frankowski, Janina Zbierska, Ryszard Staniszewski. Evaluation of trophic parameters in newly built reservoir using canonical variates analysis. ITM Web of Conferences. 2018; 23 ():00019.

Chicago/Turabian Style

Dariusz Kayzer; Przemysław Frankowski; Janina Zbierska; Ryszard Staniszewski. 2018. "Evaluation of trophic parameters in newly built reservoir using canonical variates analysis." ITM Web of Conferences 23, no. : 00019.

Journal article
Published: 01 January 2017 in Acta Scientiarum Polonorum Formatio Circumiectus
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ACS Style

Ryszard Staniszewski; Uniwersytet Przyrodniczy W Poznaniu. WATER QUALITY PARAMETERS OF A SMALL MIDFOREST WATERCOURSE RECEIVING DOMESTIC SEWAGE AFTER TREATMENT. Acta Scientiarum Polonorum Formatio Circumiectus 2017, 1, 161 -171.

AMA Style

Ryszard Staniszewski, Uniwersytet Przyrodniczy W Poznaniu. WATER QUALITY PARAMETERS OF A SMALL MIDFOREST WATERCOURSE RECEIVING DOMESTIC SEWAGE AFTER TREATMENT. Acta Scientiarum Polonorum Formatio Circumiectus. 2017; 1 ():161-171.

Chicago/Turabian Style

Ryszard Staniszewski; Uniwersytet Przyrodniczy W Poznaniu. 2017. "WATER QUALITY PARAMETERS OF A SMALL MIDFOREST WATERCOURSE RECEIVING DOMESTIC SEWAGE AFTER TREATMENT." Acta Scientiarum Polonorum Formatio Circumiectus 1, no. : 161-171.

Journal article
Published: 19 December 2015 in Nauka Przyroda Technologie
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Przemysław Frankowski; Afirma Sp. Z O.O. W Wojnowie; Janina Zbierska; Ryszard Staniszewski; Dariusz Kayzer; Uniwersytet Przyrodniczy W Poznaniu Katedra Ekologii I Ochrony Środowiska; Uniwersytet Przyrodniczy W Poznaniu Katedra Metod Matematycznych I Statystycznych. Impact of water reservoirs in Nienawiszcz on improve of the visual values of landscape. Nauka Przyroda Technologie 2015, 12, #18 .

AMA Style

Przemysław Frankowski, Afirma Sp. Z O.O. W Wojnowie, Janina Zbierska, Ryszard Staniszewski, Dariusz Kayzer, Uniwersytet Przyrodniczy W Poznaniu Katedra Ekologii I Ochrony Środowiska, Uniwersytet Przyrodniczy W Poznaniu Katedra Metod Matematycznych I Statystycznych. Impact of water reservoirs in Nienawiszcz on improve of the visual values of landscape. Nauka Przyroda Technologie. 2015; 12 (2):#18.

Chicago/Turabian Style

Przemysław Frankowski; Afirma Sp. Z O.O. W Wojnowie; Janina Zbierska; Ryszard Staniszewski; Dariusz Kayzer; Uniwersytet Przyrodniczy W Poznaniu Katedra Ekologii I Ochrony Środowiska; Uniwersytet Przyrodniczy W Poznaniu Katedra Metod Matematycznych I Statystycznych. 2015. "Impact of water reservoirs in Nienawiszcz on improve of the visual values of landscape." Nauka Przyroda Technologie 12, no. 2: #18.

Journal article
Published: 01 January 2014 in Polish Journal of Environmental Studies
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ACS Style

Ryszard Staniszewski. Heavy Metals in Waters and Sediments of Rivers Affected by Brown Coal Mine Waters. Polish Journal of Environmental Studies 2014, 23, 1 .

AMA Style

Ryszard Staniszewski. Heavy Metals in Waters and Sediments of Rivers Affected by Brown Coal Mine Waters. Polish Journal of Environmental Studies. 2014; 23 ():1.

Chicago/Turabian Style

Ryszard Staniszewski. 2014. "Heavy Metals in Waters and Sediments of Rivers Affected by Brown Coal Mine Waters." Polish Journal of Environmental Studies 23, no. : 1.

Journal article
Published: 02 September 2012 in Journal of Elementology
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ACS Style

Ryszard Staniszewski; Jean Diatta; Barbara Andrzejewska. Impact of lignite mine waters from deep seated drainage on water quality of the Noteć River. Journal of Elementology 2012, 1 .

AMA Style

Ryszard Staniszewski, Jean Diatta, Barbara Andrzejewska. Impact of lignite mine waters from deep seated drainage on water quality of the Noteć River. Journal of Elementology. 2012; (3/2014):1.

Chicago/Turabian Style

Ryszard Staniszewski; Jean Diatta; Barbara Andrzejewska. 2012. "Impact of lignite mine waters from deep seated drainage on water quality of the Noteć River." Journal of Elementology , no. 3/2014: 1.

Journal article
Published: 01 December 2009 in Oceanological and Hydrobiological Studies
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The study aimed at estimating the reliability of river classification based on macrophytes under differentiated habitat conditions. The studies were carried out between 2002 and 2005, within the EU STAR project and two other local projects. Factors taken into consideration included: shading, habitat modification, and lengths of the survey sections. Polish lowland watercourses were surveyed. The analyzed streams represented a wide range of degradation. Several macrophyte-based metrics were evaluated, including major European systems (MTR, IBMR, TIM, MI, RI) and diversity metrics (number of species, Shannon diversity index, total cover). The reaction of the macrophyte-based metrics examined to habitat factors was compared. It was proved that some of the metrics appeared to be resistant to different sources of variability, thus confirming their usefulness for river monitoring.

ACS Style

Krzysztof Szoszkiewicz; Janina Zbierska; Ryszard Staniszewski; Szymon Jusik. The variability of macrophyte metrics used in river monitoring. Oceanological and Hydrobiological Studies 2009, 38, 117 -126.

AMA Style

Krzysztof Szoszkiewicz, Janina Zbierska, Ryszard Staniszewski, Szymon Jusik. The variability of macrophyte metrics used in river monitoring. Oceanological and Hydrobiological Studies. 2009; 38 (4):117-126.

Chicago/Turabian Style

Krzysztof Szoszkiewicz; Janina Zbierska; Ryszard Staniszewski; Szymon Jusik. 2009. "The variability of macrophyte metrics used in river monitoring." Oceanological and Hydrobiological Studies 38, no. 4: 117-126.

Journal article
Published: 01 August 2006 in Hydrobiologia
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The application of macrophytes in freshwater monitoring is still relatively limited and studies on their intercalibration and sources of variation are required. Therefore, the aim of the study was to compare selected indices and metrics based on macrophytes and to quantify their variability. During the STAR project, several aspects influencing uncertainty in estimation of the ecological quality of river were assessed. Results showed that several metrics based on the indicative value of plant species can be used in evaluation of the ecological status of rivers. Among estimated sources of variance in metric values the inter-surveyor differences had the lowest effect and slightly stronger were the influences of temporal variation (years and seasons) and shading. The impact of habitat modification was the most important factor. Analysis showed that some of macrophyte-based metrics (notably MTR and IBMR) are of sufficient precision in terms of sampling uncertainty, that they could be useful for estimating the ecological status of rivers in accordance with the aims of the Water Framework Directive.

ACS Style

Ryszard Staniszewski; Krzysztof Szoszkiewicz; Janina Zbierska; Jacek Leśny; Szymon Jusik; Ralph T. Clarke. Assessment of sources of uncertainty in macrophyte surveys and the consequences for river classification. Hydrobiologia 2006, 566, 235 -246.

AMA Style

Ryszard Staniszewski, Krzysztof Szoszkiewicz, Janina Zbierska, Jacek Leśny, Szymon Jusik, Ralph T. Clarke. Assessment of sources of uncertainty in macrophyte surveys and the consequences for river classification. Hydrobiologia. 2006; 566 (1):235-246.

Chicago/Turabian Style

Ryszard Staniszewski; Krzysztof Szoszkiewicz; Janina Zbierska; Jacek Leśny; Szymon Jusik; Ralph T. Clarke. 2006. "Assessment of sources of uncertainty in macrophyte surveys and the consequences for river classification." Hydrobiologia 566, no. 1: 235-246.

Journal article
Published: 01 August 2006 in Hydrobiologia
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River Habitat Survey (RHS) data collected for the EU-funded STAR project was used to identify hydromorphological characteristic features of rivers in four European regions namely: lowlands; mountain; the Alps; and the Mediterranean. Using RHS attributes, Habitat Quality Assessment (HQA) – a measure of natural habitat diversity, and Habitat Modification Score (HMS) – a measure of anthropogenic modification, we identified considerable differences in frequency, diversity and evenness of features between the regions. A relatively small subset of features clearly distinguish the hydromorphological characters of lowland, Alpine and southern European rivers. It was more difficult to distinguish mountain rivers from Alpine rivers. The highest statistical differences are observed between Lowland and Mountain region. Within the four regions studied the RHS attributes that most strongly influence the HQA and HMS indices were identified. We conclude that specific effort should be made to ensure these are recorded properly as part of the quality control of RHS data. \ud Electronic supplementary material Electronic supplementary material is available for this article at http://dx.doi.org/10.1007/s10750-006-0090-7 and accessible for authorised user

ACS Style

Krzysztof Szoszkiewicz; Andrea Stefano Buffagni; John Davy-Bowker; Jacek Lesny; Bogdan Chojnicki; Janina Zbierska; Ryszard Staniszewski; Tomasz Zgola. Occurrence and variability of River Habitat Survey features across Europe and the consequences for data collection and evaluation. Hydrobiologia 2006, 566, 267 -280.

AMA Style

Krzysztof Szoszkiewicz, Andrea Stefano Buffagni, John Davy-Bowker, Jacek Lesny, Bogdan Chojnicki, Janina Zbierska, Ryszard Staniszewski, Tomasz Zgola. Occurrence and variability of River Habitat Survey features across Europe and the consequences for data collection and evaluation. Hydrobiologia. 2006; 566 (1):267-280.

Chicago/Turabian Style

Krzysztof Szoszkiewicz; Andrea Stefano Buffagni; John Davy-Bowker; Jacek Lesny; Bogdan Chojnicki; Janina Zbierska; Ryszard Staniszewski; Tomasz Zgola. 2006. "Occurrence and variability of River Habitat Survey features across Europe and the consequences for data collection and evaluation." Hydrobiologia 566, no. 1: 267-280.