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253
datasets available to search
ShareScore release 0.9.0
Dataset results
253 results for “Calluna”
Calluna vulgaris (L.) Hull (BR0000011925941)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011925927)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000015255112V)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000024656122)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Data and code for the publication "Dieback of Calluna vulgaris in a coastal heathland after the 2018 extreme drought"
<p>Original data and code for the publication "Dieback of Calluna vulgaris in a coastal heathland after the 2018 extreme drought"</p>
Wildfire impacts on seedbank and vegetation dynamics in Calluna heath
Moorlands dominated by Calluna vulgaris (hereafter Calluna) are globally rare and under increasing threat of wildfires due to climate change. The soil seedbank is important for community resilience, but research on its contribution to regenerating vegetation after moorland fires has, to date, focused on prescribed fire or on the short-term (≤ 2 year) impacts of wildfire. To address the role of the seedbank in long-term vegetation regeneration, we studied a chronosequence of six wildfire sites within a Scottish moorland catchment, ranging from 2 to 64 years since burning. We recorded vegetation composition and sampled the seedbank. Calluna and Erica spp. comprised 66 % and 27 % of germinated seeds, respectively, and the majority of vegetation species were not represented in the seedbank. Canonical Correspondence Analysis (CCA) revealed that time since fire was a strong predictor of vegetation species composition, but it had no effect on seedbank composition, suggesting that the same species dominate the seedbank regardless of burning. Whilst total seed density was not affected by time since wildfire, the effect on the non-Calluna seedbank was more notable. The proportion of non-Calluna species decreased with time in both vegetation and seedbank as Calluna cover was re-established and the seedbank of other species became gradually depleted. Whilst relative non-Calluna cover in the vegetation was at a maximum in recently burnt areas and then declined with time since fire, the species richness and proportion of non-Calluna in the seedbank followed a unimodal pattern after fire and reached a peak after approximately 35 years. Our results contribute to the knowledge of how moorland ecosystems regenerate after severe disturbances, which are likely to become more common as the climate changes.
Wildfire impacts on seedbank and vegetation dynamics in Calluna heath
Open the record for dataset details and reuse information.
Evaluating the performance of fire rate of spread models in northern-European Calluna vulgaris heathlands - Supplemental Material
<p>Supplemental Data analysis tables and raw data from the publication submitted to the journal "Fire" (MDPI) "Evaluating the performance of fire rate of spread models in northern-European Calluna vulgaris heathlands".</p>
Data from: Impacts of drought and nitrogen addition on Calluna-heathlands differ with plant life-history stage
1. Climate change and atmospheric deposition of nitrogen (N) affect the biodiversity patterns and functions of ecosystems worldwide. While many single-factor studies have quantified ecosystem responses to single global change drivers, less is known about the interaction effects of these drivers on ecosystem functions. 2. Here, we present the results of a three-year field and a two-year greenhouse experiment, in which we assessed responses of Calluna vulgaris-heathlands to the single and combined effects of drought events (D) and N fertilisation (D: 25% precipitation reduction in the field experiment and 20-50% soil water content reduction in the greenhouse experiment; N fertilisation: 35 kg N ha−1 yr−1). 3. We examined the effects of D and N treatments on growth responses of the dominant dwarf shrub Calluna vulgaris (in terms of biomass production and allocation, tissue δ13C signatures and C:N ratios) in relation to two plant life-history stages and different 'ecotypes' (sub-Atlantic vs. subcontinental heathlands). 4. Plant responses varied strongly with life-history stage, and the interaction of N and D showed lower effects than would be expected based on additive responses to single factors. While D treatments had no effects on Calluna in the building phase (ca. ten-year-old plants), seedlings (particularly one-year-old plants) were highly susceptible to drought. Differences in response patterns were attributable to the high shoot-root ratios typical of young Calluna plants. These ratios decreased with progressing life-history as a result of increasing below-ground biomass investments. Below-ground biomass production and shoot-root ratios differed between plants from the different heathland sites. 5. Tissue δ13C signatures decreased and C:N ratios increased with plant age as a result of decreasing evaporative demands (per unit root biomass). N fertilisation increases the shoot-root ratios and thereby the drought susceptibility of Calluna plants. 6. Synthesis. Our findings suggest that plant responses to global change are difficult to anticipate by means of single-factor studies or by focusing on a single life-history stage. This highlights the need for global change research to include multiple factors and life-history stages when assessing an ecosystem's susceptibility to shifts in environmental conditions.
Calluna vulgaris (L.) Hull (BR0000011926191)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011926214)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011926870)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000012364466)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011926931)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011926177)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011922810)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011927471)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011924968)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011925835)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Calluna vulgaris (L.) Hull (BR0000011926450)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
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