Functional diversity analysis helps to identify filters affecting community assembly after fen restoration by top-soil removal and hay transfer

Hedberg, Petter; Kozub, Łukasz

doi:10.1016/j.jnc.2013.08.004

Cited by 32 publications

(19 citation statements)

References 43 publications

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“…Hedberg et al . () found that CWM of SLA was negatively correlated with groundwater level, which is consistent with our results, however we used only a proxy for water – the moisture EIV. Thus, the negative relationships between leaf mass and size and SLA CWMs, and natural regeneration of P. sylvestris , may indicate that light availability is crucial for the first phases of P. sylvestris seedling development.…”

Section: Discussionsupporting

confidence: 91%

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Do understorey or overstorey traits drive tree encroachment on a drained raised bog?

et al. 2017

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One of the most important threats to peatland ecosystems is drainage, resulting in encroachment of woody species. Our main aim was to check which features - overstorey or understorey vegetation - are more important for shaping the seedling bank of pioneer trees colonising peatlands (Pinus sylvestris and Betula pubescens). We hypothesised that tree stand parameters will be more important predictors of natural regeneration density than understorey vegetation parameters, and the former will be negatively correlated with species diversity and richness and also with functional richness and functional dispersion, which indicate a high level of habitat filtering. The study was conducted in the 'Zielone Bagna' nature reserve (NW Poland). We assessed the structure of tree stands and natural regeneration (of B. pubescens and P. sylvestris) and vegetation species composition. Random forest and DCA were applied to assess relationships between variables studied. Understorey vegetation traits affected tree seedling density (up to 0.5-m height) more than tree stand traits. Density of older seedlings depended more on tree stand traits. We did not find statistically significant relationships between natural regeneration densities and functional diversity components, except for functional richness, which was positively correlated with density of the youngest tree seedlings. Seedling densities were higher in plots with lower functional dispersion and functional divergence, which indicated that habitat filtering is more important than competition. Presence of an abundant seedling bank is crucial for the process of woody species encroachment on drained peatlands, thus its dynamics should be monitored in protected areas.

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Section: Discussionsupporting

confidence: 91%

“…; Hedberg et al . ). Nevertheless, at this time there is no information about the relationship between functional diversity of vegetation and risk of tree species encroachment, which may be helpful in explaining ecological success of woody species encroachment on drained peatlands.…”

Section: Introductionmentioning

confidence: 97%

Do understorey or overstorey traits drive tree encroachment on a drained raised bog?

et al. 2017

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“…D'Astous et al . ; Hedberg, Kozub & Kotowski ; Laughlin ). The functional consequences of restoration measures can be assessed by directly measuring the functions in question, such as nutrient supply after rewetting (Van Bodegom et al .…”

Section: Introductionmentioning

confidence: 99%

“…A less explored, though complementary, way of assessing restoration success is by applying a functional perspective (e.g. D'Astous et al 2013; Hedberg, Kozub & Kotowski 2014;Laughlin 2014).…”

Section: Introductionmentioning

confidence: 99%

Functional community ecology meets restoration ecology: Assessing the restoration success of alluvial floodplain meadows with functional traits

Engst

Baasch

Erfmeier

et al. 2016

Journal of Applied Ecology

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1. Species-rich grasslands are highly endangered habitats in Central Europe. To halt their ongoing loss, many sites have become subjects of restoration efforts. Traditionally, restoration success is measured using target species or by comparing similarity in species composition. Here, we suggest to additionally use functional community composition to assess restoration success as functional traits might offer mechanistic insights into restoration processes. 2. In a 5-year restoration experiment, we annually evaluated the responses of (i) floristic composition and species diversity, (ii) number and cover of target species, (iii) functional identity and (iv) functional diversity to four different methods of assisted recolonization through species introduction: hay transfer and application of threshing material from a local provenance, combined with and without addition of regional seed mixtures of target species, as well as to a control treatment. 3. Across all treatments, floristic composition, species diversity, and number and cover of target species approached the values of reference sites. In the last observation year, Shannon diversity was still lower in all treatment plots than in the reference plots, while the number of target forb species had reached or exceeded the reference levels. We demonstrated that the community was also restored functionally in many aspects, but not in all studied traits. Calculated community-weighted means (CWMs), specific leaf area (SLA) and leaf dry matter content (LDMC) in experimental plots did not differ significantly from the reference plots, thereby indicating that productivity of restored sites had reached target values. In contrast, CWMs of strategy types and pollination modes revealed significant differences, showing that biotic interactions among plant species and with other trophic levels have not yet been fully restored. However, almost all CWMs showed a trajectory towards the reference, thus giving a positive prospect for the future development. With respect to functional diversity (FD), we found steadily increasing FD values for almost all traits analysed. 4. Synthesis and applications. We demonstrated that all applied restoration measures were appropriate to achieve the restoration aim in terms of species composition of a given community and the establishment of target species. With respect to many functional traits, the restored meadows were already as functional as communities from the reference sites. Hence, including functional criteria did not only corroborate traditional criteria of restoration success but also allowed identifying those floodplain meadow's functions that can be quickly and less quickly restored.

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“…Ma et al (2010a) found that, for the perennial herbaceous plants, the reproductive outputs decrease, fine roots increase and leaf fractions remain constant along an increasing elevation gradient in the Central Tibetan Plateau. Differences in functional traits or groups can also provide useful clues to understanding plant community reassembly at different spatial scales and evolutional stages (Hedberg et al 2014). The types of plant-to-plant interactions (competition or facilitation) mainly shape SAR at the community level because different plant functional groups have evolved specific strategies to survive in a given habitat (Leps and Stursa 1989).…”

Section: Tablementioning

confidence: 99%

Species-area relationship within and across functional groups at alpine grasslands on the northern Tibetan Plateau, China

Zhou

Shen

et al. 2016

J. Mt. Sci.

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Functional diversity analysis helps to identify filters affecting community assembly after fen restoration by top-soil removal and hay transfer

Cited by 32 publications

References 43 publications

Do understorey or overstorey traits drive tree encroachment on a drained raised bog?

Do understorey or overstorey traits drive tree encroachment on a drained raised bog?

Functional community ecology meets restoration ecology: Assessing the restoration success of alluvial floodplain meadows with functional traits

Species-area relationship within and across functional groups at alpine grasslands on the northern Tibetan Plateau, China

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