High resolution vegetation assessment with beta-diversity – a moving window approach

Bartha, Sándor; Zimmermann, Zita; Horváth, András; Szentes, Szilárd; Sutyinszki, Zsuzsanna; Szabó, Gábor; Házi, Judit; Komoly, Cecília; Penksza, Károly

doi:10.17700/jai.2011.2.1.47

Cited by 4 publications

(4 citation statements)

References 37 publications

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“…This sampling protocol has been tested and applied successfully in many grasslands ecosystems [32,33,[35][36][37]. The large number and small size of microquadrats ensure the precise estimation of frequency and spatial patterns of species and species combinations.…”

Section: Standardized Sampling Protocolmentioning

confidence: 99%

“…We applied an established methodology of spatial scaling and analyses [30][31][32][33]37,38]. For representing beta diversity (i.e.…”

Section: Data Processingmentioning

confidence: 99%

“…This methodology (cf. [30,31] has been proposed recently for vegetation monitoring [32,36,37]. By distinguishing all realized species combinations (instead of using mean composition) we receive a very detailed record about local coexistence relations.…”

Section: Figurementioning

confidence: 99%

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Grazed Pannonian grassland beta-diversity changes due to C4 yellow bluestem

Szentes

Sutyinszki

Szabó³

et al. 2012

Open Life Sciences

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This study investigates how yellow bluestem affects biodiversity in a typical Pannonian grassland. Beta diversity (i.e. the finescale spatial variability of species compositions), was estimated by the realized number of species combinations sampled at various scales. Sampling was performed by a standard protocol. Presences of plant species were recorded along 52.2 m long belt transect of 1044 units of 0.05x0.05 m contiguous microquadrats. According to the results the massive presence of tested C4 grass significantly reduced species richness of the grassland. Beta diversity assessment revealed that 90% of species combinations were lost due to yellow bluestem invasion. Fine-scale spatial pattern analyses showed complete local extinctions of other species from microsites dominated by yellow bluestem. This local extinction is enhanced by the specific clonal architecture of this species and by the accumulation of litter. Other dominant grasses had no effect on fine scale diversity, i.e. they could coexist well with other elements of the local flora. This study presents currently developed microhabitat types, forecasts and also draws attention to the danger that climate warming will probably enhance the spread of this detrimental C4 species.

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Section: Standardized Sampling Protocolmentioning

confidence: 99%

“…We applied an established methodology of spatial scaling and analyses [30][31][32][33]37,38]. For representing beta diversity (i.e.…”

Section: Data Processingmentioning

confidence: 99%

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Grazed Pannonian grassland beta-diversity changes due to C4 yellow bluestem

Szentes

Sutyinszki

Szabó³

et al. 2012

Open Life Sciences

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“…Therefore, we used 26 m long circular transect were lay down around each selected conifer canopy. Every transect consists of 520 units of 5 cm × 5 cm continuous microquadrats (Bartha et al 2011b). The presence of plant and lichen species were recorded in every 5 cm × 5 cm microquadrat along each transect (Bartha 2008) (Fig.…”

Section: Experimental Designmentioning

confidence: 99%

Beta diversity differences between native and alien conifer understorey vegetation in dry grassland: a multiscale methodology approach

Bakacsy

Szepesi

2023

Preprint

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Alien woody species are one of the most succesful invaders in the world, despite of these species are frequently used for afforestations in several regions such as semi-arid lands. Shrubs and trees can form important patches, creating microhabitats in the open area of arid lands. These vegetations have unique species composition and coexistence of species modes. However, effects of solitary conifer species on the understory vegetation are lacking. This study evaluated the effects of the solitary native and invasive conifer species, Juniperus communis and Pinus nigra on the beta diversity of the surrounding vegetations. To determine the impacts of the conifer invasion on species richness and structure in this habitat, a field study was conducted in Pannonic dry sand grassland in the growing season of 2018. The presence of plant and lichen species were recorded in the vegetation around each six selected solitary conifers. 26 m long circular transects, which consist of 520 units of 5 cm × 5 cm contiguous microquadrats were used for beta diversity estimation. Two information theory models were calculated the baseline transect data, in order to describing the fine-scale spatial structure of each understorey community. The results showed significant differences (p ≤ 0.05) between the two types of understory vegetation functions and these parameters. Our result show, the native conifer J. communis creates a more complex, highly organized microhabitats compared to the invasive, P. nigra. Thus, can conclude that native conifer species has positive effect on the beta diversity of understorey vegetation. Based on our study, the removal of the invasive woody species is required in order to sustain diversity of these habitat and reducing the risk of the introduction of other alien species.

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A case study on the early stage of Pinus nigra invasion and its impact on species composition and pattern in Pannonic sand grassland

Bakacsy,

Szepesi

2024

Sci Rep

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Alien woody species are successful invaders, frequently used for afforestation in regions like semi-arid lands. Shrubs and trees create important microhabitats in arid areas. Understorey vegetation in these habitats has unique species composition and coexistence. However, the impact of solitary woody species on understorey vegetation is less understood. This study evaluated the effect of native (Juniperus communis) and invasive solitary conifers (Pinus nigra) on surrounding vegetation, where individuals were relatively isolated (referred to as solitary conifers). The field study conducted in Pannonic dry sand grassland in 2018 recorded plant and lichen species presence around six selected solitary conifers. Composition and pattern of understorey vegetation were assessed using 26 m belt transects with 520 units of 5 cm × 5 cm contiguous microquadrats. Compositional diversity (CD) and the number of realized species combinations (NRC) were calculated from the circular transects. Results showed native conifer J. communis created more complex, organized microhabitats compared to alien P. nigra. CD and NRC values were significantly higher under native conifers than invasive ones (p = 0.045 and p = 0.026, respectively). Native species also had more species with a homogeneous pattern than the alien species. Alien conifers negatively affected understorey vegetation composition and pattern: some species exhibited significant gaps and clusters of occurrences along the transects under P. nigra. Based on our study, the removal of invasive woody species is necessary to sustain habitat diversity.

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High resolution vegetation assessment with beta-diversity – a moving window approach

Cited by 4 publications

References 37 publications

Grazed Pannonian grassland beta-diversity changes due to C4 yellow bluestem

Grazed Pannonian grassland beta-diversity changes due to C4 yellow bluestem

Beta diversity differences between native and alien conifer understorey vegetation in dry grassland: a multiscale methodology approach

A case study on the early stage of Pinus nigra invasion and its impact on species composition and pattern in Pannonic sand grassland

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