The Relationship between Macrophyte Assemblages and Selected Environmental Variables in Reservoirs of Slovakia Examined for the Purpose of Ecological Assessment

Baláži, Peter; Hrivnák, Richard; Oťaheľová, Helena

doi:10.3161/104.062.0313

Cited by 12 publications

(9 citation statements)

References 23 publications

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“…Laboratory analyses were carried out by the staff of the Slovak Water Management Enterprise according to methods included in ISO and EN standards (cf. Baláži et al 2014). Mean values of physico-chemical variables were subsequently used for statistical analyses.…”

Section: Environmental Variablesmentioning

confidence: 99%

The relationship between macrophyte assemblages and environmental variables in drainage and irrigation canals in Slovakia

Baláži

Hrivnák

2016

Biologia

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Our study provides new knowledge about macrophyte assemblages and environmental variables of Slovak drainage and irrigation canals. The canal system, comprising ca. 15% of all flows in Slovakia, is one of the oldest in Central Europe. This information represents a first step toward exploitation of macrophytes as an obligatory biological quality element for the assessment of ecological potential according to the requirements of the Water Framework Directive. Among 61 canals studied, a total of 85 aquatic plant species (35 hydrophytes, 16 amphiphytes and 34 helophytes) were recorded during the years 2012-2014, including three neophytes and 18 threatened species. Physico-chemical variables explained the highest proportion of species variability, whilst hydromorphological variables and landscape variables were much less significant. Chemical oxygen demand, ammonium nitrogen, electrical conductivity, water pH, flow velocity and water depth were identified as most important drivers of species composition of aquatic macrophytes and explained 21.1% of the variability. The CCA results revealed differences in species composition of canals reflecting the geographical origin and environmental conditions as well, relating to South-Eastern and South-Western Slovakia. In conclusion, macrophytes in drainage and irrigation canals are able to reflect several environmental variables and might provide valuable information for bioindication in assessing the ecological potential.

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Section: Environmental Variablesmentioning

confidence: 99%

The relationship between macrophyte assemblages and environmental variables in drainage and irrigation canals in Slovakia

Baláži

Hrivnák

2016

Biologia

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“…In addition, shallow water reservoirs are exposed to rapid heating and an increase in water temperature. As reported by Baláži et al [24], the strongest factors influencing the composition of macrophyte communities are associated with water temperature.…”

Section: Discussionmentioning

confidence: 57%

“…Human activity has a significant impact on the species richness of aquatic ecosystems, directly and indirectly causing the loss of aquatic vegetation and/or limiting their diversity [59]. Reduction of heterogeneous habitats eliminates sensitive plant communities and species of the varied littoral zone, resulting in the appearance of anthropogenic communities with numerous synanthropic and invasive species [24,60,61]. On the other hand, reservoirs built on rivers may provide new artificial habitats for macrophytes [18].…”

Section: Discussionmentioning

confidence: 99%

“…Reservoirs have asymmetrical basins: they are the deeper at the dam, and shallow at the inflow. Their hydrological regime is intermediate between rivers and lakes, which causes instability and the disturbance of ecosystems occurring there [24]. The small depth and large area make the reservoirs particular habitats, where abiotic factors determine the functioning of the ecosystem, and in which homeostatic processes are poorly developed, given their artificiality [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Phytosociological Data in Assessment of Anthropogenic Changes in Vegetation of Rzeszów Reservoir

2021

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Phytosociological research on aquatic and marsh vegetation was conducted in Rzeszów Reservoir (SE Poland): 134 relevés according to the Braun-Blanquet method were collected there in 2016 and compared to 91 relevés published in 1994 (225 relevés in total). Changes in vegetation type, diversity measures, species composition, and Ellenberg Indicator Values (EIVs) for light, moisture, reaction, and nitrogen were analysed. Over the 22 years (1994–2016), the greatest changes were noted in communities of the classes Lemnetea and Potametea and the alliance Salicion albae. The long-term observations demonstrated the disappearance of 14 phytocoenoses and the occurrence of 12 new ones. An expansion of marsh communities (Typhetum latifoliae, Typhetum angustifoliae, Glycerietum maximae, Leersietum oryzoidis) was noted, causing a decline of several species and vegetation types. According to canonical correspondence analysis (CCA), four environmental variables (light, moisture, nitrogen, and pH) were related to plant distribution. The strong disturbances reflected in intensive eutrophication were due to human activity, which is the main factor shaping the ecological succession and overgrowing of the reservoir.

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“…The main causes are burial, erosion, pollution, water characteristics variation (i.e., flow regimes, functionality, physical and chemical changes); together with water bodies, land forms, dynamics artificialization; and biodiversity regression (i.e., Suominen, 1968;Bolpagni et al, 2013;SosseyAlaoui and Rosillon, 2013;Cianfaglione, 2014;Szoszkiewicz et al, 2014;Baláži et al, 2014;Bolpagni andPiotti, 2015, 2016).…”

Section: Introductionmentioning

confidence: 99%

A new multi-criteria method for the ecological assessment of lakes: A case study from the Transboundary Biosphere Reserve ‘West Polesie’ (Poland)

et al. 2017

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A new multi-criteria method of evaluation and assessment of the ecological status of lakes is proposed. It is based on macrophytes analysis integrated with geomorphological, landscape and catchment sources of threats. A total of 22 lakes in the Transboundary Biosphere Reserve 'West Polesie' (Poland) were investigated along trophic (available nutrients) and human pressure gradients, testing the proposed method with ESMI and TRS indices. Therefore, the present indexation included 22 criteria (i.e., catchment land use, phytolittoral area, number of plant species) concerning three different assessing zones (lakeshore, littoral and surrounding area), and provided a five-class ecological classification. The proposed index, in addition to the general ecological conditions assessment of lakes, allows to point out a zonal evaluation, identifying the most critic zones in terms of ecological status. The proposed method can be universally adapted for any type of lakes, regardless of their geographical characteristics. It can be applied to system monitoring, and to support lakes biodiversity, functionality, conservation, restoration, water protection and uses, as well as water, territory and landscape management actions.

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The Relationship between Macrophyte Assemblages and Selected Environmental Variables in Reservoirs of Slovakia Examined for the Purpose of Ecological Assessment

Cited by 12 publications

References 23 publications

The relationship between macrophyte assemblages and environmental variables in drainage and irrigation canals in Slovakia

The relationship between macrophyte assemblages and environmental variables in drainage and irrigation canals in Slovakia

Phytosociological Data in Assessment of Anthropogenic Changes in Vegetation of Rzeszów Reservoir

A new multi-criteria method for the ecological assessment of lakes: A case study from the Transboundary Biosphere Reserve ‘West Polesie’ (Poland)

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