Habitat characteristics and the effect of various nutrient solutions on growth and mineral nutrition ofArnica montana L. grown on natural soil

Pegtel, D. M.

doi:10.1007/bf00048391

Cited by 19 publications

(8 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A causal relationship between population size and offspring fitness seems unlikely. It has been shown that other factors, such as increased habitat acidification and eutrophication, which are possibly negatively correlated with population size, influence the growth of A. montana as well (Dueck & Elderson 1992;Pegtel 1994;de Graaf et al 1998).…”

Section: Reproductive Success and Offspring Fitnessmentioning

confidence: 99%

Population Size, Genetic Variation, and Reproductive Success in a Rapidly Declining, Self-Incompatible Perennial (Arnica montana) in The Netherlands

Luijten¹,

Dierick²,

Gérard³

et al. 2000

Conservation Biology

162

100

View full text Add to dashboard Cite

Arnica montana is a rare and rapidly declining, self-incompatible plant species. In 26 populations in The Netherlands we investigated the relationship between population size and genetic variation using allozyme markers. Genetic variation was low in A. montana ( H e ϭ 0.088). There were positive correlations between population size and the proportion of polymorphic loci, the number of effective alleles, and expected heterozygosity, but not with observed heterozygosity. There was a significantly positive correlation between population size and the inbreeding coefficient. Generally, small populations showed heterozygote excess, which decreased with increasing population size. Possibly, the heterozygous individuals in small populations are survivors from the formerly larger populations with relatively high fitness. The F statistics showed a moderately high level of differentiation among populations ( F ST ϭ 0.140 Ϯ 0.02), implying a low level of gene flow. For three out of four allozyme loci, we found significant inbreeding ( F IS ϭ 0.104 Ϯ 0.03). Only 14 of 26 populations were in Hardy-Weinberg equilibrium at all four polymorphic loci. In a subset of 14 populations of various size, we investigated natural seed production and offspring fitness. Population size was positively correlated with seed set, seedling size, number of flowering stems and flowerheads, adult survival, and total relative fitness, but not with the number of florets per flowerhead, germination rate, or the proportion of germination. Offspring performance in the greenhouse was not associated with genetic diversity measured on their mothers in the field. We conclude that the fitness of small populations is significantly reduced, but that there is as yet no evidence that this was caused by inbreeding. Possibly, the self-incompatibility system of A . montana has been effective in reducing selfing rates and inbreeding depression.

show abstract

Section: Reproductive Success and Offspring Fitnessmentioning

confidence: 99%

Population Size, Genetic Variation, and Reproductive Success in a Rapidly Declining, Self-Incompatible Perennial (Arnica montana) in The Netherlands

Luijten¹,

Dierick²,

Gérard³

et al. 2000

Conservation Biology

162

100

View full text Add to dashboard Cite

show abstract

“…The high dark diversity on low-pH soils could be explained by low-pH environments generally exhibiting quite restrictive environments, where it may be hard for plants to establish and persist even under generally suitable conditions. For example, nitrogen becomes a limiting factor in more acidic soils causing low growth rates (e.g., Nordbakken et al 2004; Pegtel 1994) and hence acididophilic communities could be more sensitive to human disturbance (for example drainage), possibly resulting in a higher plant dark diversity. Many plants adapted to low-pH soils such as carnivorous plants or heathland plants are adapted to natural disturbances (e.g., fire), and have poor establishment success when disturbances are absent or the competition from fast-growing plants is high (Brewer 1998; Nordbakken et al 2004; Paniw et al 2017; Pegtel 1994).…”

Section: Discussionmentioning

confidence: 99%

“…For example, nitrogen becomes a limiting factor in more acidic soils causing low growth rates (e.g., Nordbakken et al 2004; Pegtel 1994) and hence acididophilic communities could be more sensitive to human disturbance (for example drainage), possibly resulting in a higher plant dark diversity. Many plants adapted to low-pH soils such as carnivorous plants or heathland plants are adapted to natural disturbances (e.g., fire), and have poor establishment success when disturbances are absent or the competition from fast-growing plants is high (Brewer 1998; Nordbakken et al 2004; Paniw et al 2017; Pegtel 1994). For conservation projects in low-pH sites, this suggests that focus on natural processes facilitating successful establishment of characteristic plant species is central.…”

Section: Discussionmentioning

confidence: 99%

“…We foresee that future research and new possibilities both with point clouds and artificial intelligence and in other areas of remote sensing (i.e., fine spatial and spectral resolution data) could potentially bridge this gap. The pH in soil or in water The low-pH environment is more restrictive than neutral or calcareous settings in the sense that it is harder for plants to establish, grow and persist in these sites (e.g., Pegtel 1994).…”

Section: Field-vs Lidar-based Measuresmentioning

confidence: 99%

See 1 more Smart Citation

The characteristics of high-dark-diversity habitats derived from lidar

Moeslund

Clausen

Dalby

et al. 2022

Preprint

View full text Add to dashboard Cite

A key aspect of nature conservation is knowledge of which aspects of nature to conserve or restore to favor the characteristic diversity of plants in a given area. Here, we used a large plant dataset with > 40.000 plots combined with airborne laser scanning (lidar) data to reveal the local characteristics of habitats having a high plant dark diversity - i.e., absence of suitable species - at national extent (> 43.000 km2). Such habitats have potential for reaching high realized diversity levels and hence are important in a conservation context. We calculated 10 different lidar based metrics (both terrain and vegetation structure) and combined these with 7 different field-based measures (soil chemistry and species indicators). We then used Integrated Nested Laplace Approximation for modelling plant dark diversity across 33 North European habitat types (open landscapes and forests) selected by the European communities to be important. In open habitat types high-dark-diversity habitats had relatively low pH, high nitrogen content, tall homogenous vegetation and overall relatively homogenous terrains (high terrain openness) although with a rather high degree of local microtopographical variations. High-dark-diversity habitats in forests had relatively tall vegetation, few natural-forest indicators, low potential solar radiation input and a low cover of small woody plants. Our results highlight important vegetation, terrain and soil related factors that managers and policymakers should be aware of in conservation and restoration projects to ensure a natural plant diversity, for example low nutrient loads, natural microtopography and open forests with old-growth elements such as dead wood and rot attacks.

show abstract

“…Therefore, it can be assumed that A. montana tolerates nutrient poverty and acidic soil conditions. In contrast, A. montana seems to be less competitive in habitats with only slightly acidic soils (Dueck and Elderson, 1992;Pegtel, 1994;Hollmann et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Soil and Vegetation Drive Sesquiterpene Lactone Content and Profile in Arnica montana L. Flower Heads From Apuseni-Mountains, Romania

et al. 2022

View full text Add to dashboard Cite

Arnica montana L. (AM, Asteraceae) is a perennial, herbaceous vascular plant species of commercial importance. The flower heads’ pharmacological properties are attributed mainly to sesquiterpene lactones (SLs), with phenolic acids and flavonoids also considered of relevance. The botanical drug is still partly collected in different European mountain regions. The SL content can be influenced by genetic factors and environmental conditions (altitude, temperature and rainfall). Surprisingly, the influence of the soil on SL-content have rarely been investigated. However, the soil determines the occurrence, distribution and overall fitness of AM. Equally, environmental factors are crucial determinants for the biosynthesis and fluctuations in plant secondary metabolites. Therefore, different abiotic (pH, C/N ratio, base saturation, cation exchange capacity) and biotic (species richness, vegetation cover) parameters need to be assessed as potential drivers of the variable content of AM’s secondary metabolites. Consequently, we developed an in situ experimental design aiming to cover a wide range of soil pH conditions. We detected and investigated different AM populations growing in grassland on acidic soils, on siliceous as well as calcareous geologies within the same geographical region and altitudinal belt. The total SL content and most single SL contents of the AM flower heads differed significantly between the two geologies. AM flower heads of plants growing on loam on limestone showed a significant higher total SL content than the flower heads of plants growing in siliceous grasslands. Furthermore, the SL contents were significantly correlated with geobotanical species richness and vegetation cover pointing toward an effect of species interactions on the production of SLs. Moreover, the ratios of the main SLs helenalin to dihydrohelenalin esters were significantly correlated to environmental parameters indicating that SL composition might be a function of habitat conditions. The findings of this study shed light upon the often ignored, complex interactions between environmental conditions and plant secondary metabolites. We highlight the importance of both abiotic and biotic habitat parameters for SLs in AM.

show abstract

Habitat characteristics and the effect of various nutrient solutions on growth and mineral nutrition ofArnica montana L. grown on natural soil

Cited by 19 publications

References 23 publications

Population Size, Genetic Variation, and Reproductive Success in a Rapidly Declining, Self-Incompatible Perennial (Arnica montana) in The Netherlands

Population Size, Genetic Variation, and Reproductive Success in a Rapidly Declining, Self-Incompatible Perennial (Arnica montana) in The Netherlands

The characteristics of high-dark-diversity habitats derived from lidar

Soil and Vegetation Drive Sesquiterpene Lactone Content and Profile in Arnica montana L. Flower Heads From Apuseni-Mountains, Romania

Contact Info

Product

Resources

About