Wet meadows of the alliance Molinion and their environmental gradients in Slovenia

Zelnik, Igor; Čarni, Andraž

doi:10.2478/s11756-008-0042-y

Cited by 30 publications

(17 citation statements)

References 32 publications

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“…It needs to be emphasized that pH is important determinant of species composition in grasslands [11] while potassium is an important soil variable limiting or colimiting vegetation growing on soils that can dry out [73]. It can be interpreted that P sampling overestimated the role of potassium due to the constant avoidance of sites invaded by Calamagrostis epigejos or Solidago gigantea.…”

Section: Environment-vegetation Relationshipsmentioning

confidence: 99%

“…With this approach, only homogenous and well-developed patches of vegetation are sampled, while those considered "atypical" are simply omitted by the researcher [7,8]. Accordingly, discrete vegetation types are recognized and the researcher aims to explore the environmental differences among these types [9][10][11][12]. In preferential sampling, the researcher's perception of the vegetation and the scale of the study can influence the way in which the environment-vegetation relationships are analyzed [13].…”

Section: Introductionmentioning

confidence: 99%

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A performance comparison of sampling methods in the assessment of species composition patterns and environment–vegetation relationships in species-rich grasslands

et al. 2017

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The influence that different sampling methods have on the results and the interpretation of vegetation analysis has been much debated, but little is yet known about how the spatial arrangement of samples affect patterns of species composition and environment-vegetation relationships within the same vegetation type. We compared three data sets of the same sample size obtained by three standard sampling methods: preferential, random, and systematic. These different sampling methods were applied to a study area comprising of 36 ha of intermittently wet Molinia meadows. We compared the performance of the three methods under two management categories: managed (extensively mown) and unmanaged (abandoned for 10 years). A total of 285 vegetation-plots were sampled, with 95 plots recorded per sampling method. In preferential sampling, we sampled only patches of vegetation with an abundance of indicator species of the habitat type, while random and systematic plots were positioned independently from the researcher by using GIS. The effect of each sampling method on the patterns of species composition and species-environment relationships was explored by redundancy analysis and the significance of effects was tested by the randomization test. Preferential sampling revealed different patterns of species composition than random and systematic sampling methods. Random and systematic sampling methods have resulted in broader vegetation variability than with preferential sampling method. Preferential sampling revealed different relationship between soil parameters and species composition in contrast to random and systematic sampling methods. Although we have not found significant differences in vegetation-environment relationships between random and systematic sampling methods, random sampling revealed a more robust correlation of species data to soil factors than preferential and systematic sampling methods. Intentional restriction of vegetation variation sampled preferentially may be detrimental to statistical inference in studies of species composition patterns and vegetation-environment relationships.

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Section: Environment-vegetation Relationshipsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A performance comparison of sampling methods in the assessment of species composition patterns and environment–vegetation relationships in species-rich grasslands

et al. 2017

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“…In this study, we used the Ellenberg's indicator values (soil moisture, N content, pH) to assess the habitat conditions that are associated with particular types of plant communities. These indicators are widely used to describe habitat conditions and changes and are considered by many authors to be the most important factors determining wet grassland species composition [53,[61][62][63][64]. Presumably, the changes in moisture conditions documented for our study area induced changes in the vegetation and encouraged the development of plant communities of the Filipendulion alliance.…”

Section: Discussionmentioning

confidence: 99%

Conservation status and trends in the transformation of Molinia meadows in the Łąki w Komborni Natura 2000 site, SE Poland

2017

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The aim of this study was to provide a phytosociological and ecological characterization of meadow communities in the Łąki w Komborni Natura 2000 site (SE Poland), assess the trends in their transformation, and indicate the major threats impacting on their conservation. The study was conducted in 2015-2016. Three types of meadow communities were distinguished (alliances Molinion, Arrhenatherion, Filipendulion), due to the absence of the species characteristic for associations. The species richness noted per relevé differed significantly between the types of meadows (Kruskal-Wallis test: H = 21.65, p < 0.05). The highest floristic biodiversity (H' = 2.99) was noted for the meadow patches classified as in the Molinion alliance and the lowest (H' = 2.50) was found for the patches from the Filipendulion alliance. Mean values of the ecological indicators (F, R, N) differed between the meadow communities. The greatest disparity was noted for the mean values of the soil moisture indicator (from 6.42 to 7.45). Patches classified in the Filipendulion alliance were developed on the wettest soil substratum, whereas the patches classified in the Arrhenatherion alliance were predominant on a relatively dry substratum. The abandonment of traditional management practices (grazing, mowing) has contributed to transformation of the Molinia meadows, disappearance of characteristic species and succession of shrubs. The Molinia meadow habitat should be conserved by improvement of protection measures (appropriate mowing regime and removal of biomass) to conserve a high species richness and the rare and protected plant species.

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“…2002). In order to understand better the ecological circumstances in the studied vegetation, DCA was performed in the CANOCO 4.5 program; values of micro-topography (relative height in cm) and altitude were passively projected onto the diagram plot and the correlation between these values and the main ordination axes was calculated (ter Braak & Šmilauer 2002;Zelnik & Čarni 2008a). Life forms and lifespan traits were determined according to Davis (1965Davis ( -1985, Davis et al (1988) and Pils (2006) and the number of plants with an individual life form in an individual cold hole was correlated with the micro-topography using a nonparametric Kendall coefficient in STATISTICA version 8.0 (Anon.…”

Section: Area and Methodsmentioning

confidence: 99%

Vegetation of temporary ponds in cold holes in the Taurus mountain chain (Turkey)

et al. 2010

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Abstract:The work deals with vegetation zonation in temporary ponds within cold holes in the Western Taurus mountain chain. There are two main factors that cause differentiation within the studied vegetation: one relates to the microtopography, the other to altitude. In the bottom of temporary ponds, marsh vegetation of Ranunculo argyrei-Tanacetea argentei (Sedo nani-Convolvuletalia galactici) appears (an endemic class vicariant to Scheuchzerio-Caricetea fuscae); in the intermediate zone, the vegetation is dominated by therophytes of Stellarietea mediae (Thero-Brometalia) and in the upper part, there is vegetation of hygrophilous grassland communities of Molinio-Arrhenatheretea (Potentillo-Polygonetalia). This zonation of communities can be found at lower altitudes (up to 1600 m); whereas at higher altitudes, the intermediate zone dominated by therophytes gradually disappears and then also the hygrophilous grasslands. The work also provides a description of new syntaxa, to wit: Ranunculo argyrei-Tanacetea argentei, Sedo nani-Convolvuletalia galactici, Rorippo aureae-Eleocharidion quinqueflorae, Sedo nani-Ranunculetum argyrei, Trifolio caudati-Hordeion geniculati, Taeniathero caput-medusae-Hordeetum geniculati, Alopecuro vaginati-Trifolion resupinati and Ornithogalo lanceolati-Elymetum repentis.

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Wet meadows of the alliance Molinion and their environmental gradients in Slovenia

Cited by 30 publications

References 32 publications

A performance comparison of sampling methods in the assessment of species composition patterns and environment–vegetation relationships in species-rich grasslands

A performance comparison of sampling methods in the assessment of species composition patterns and environment–vegetation relationships in species-rich grasslands

Conservation status and trends in the transformation of Molinia meadows in the Łąki w Komborni Natura 2000 site, SE Poland

Vegetation of temporary ponds in cold holes in the Taurus mountain chain (Turkey)

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