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Integrating demographic and genetic approaches in plant conservation
Population structure of the rare, long-lived perennial Gentiana pneumonanthe in relation to vegetation and management in The Netherlands
The structure of the surrounding vegetation appears to be very important in determining the populationructure of the marsh gentian, and the percentage of bare soil surface and the cover of the litter layer explain most of the variation in the density and proportion of different age states in the populations.
Population structure of Salvia pratensis in relation to vegetation and management of Dutch dry floodplain grasslands
Although recently established populations on the young river dunes formed during ecological restoration projects would be dynamic, most sampled plots were of the regressive type, which suggests that either site conditions were not yet optimal or Allee effects limited further expansion of the small founder populations.
Temporal and spatial variation in the demography of Gentiana pneumonanthe, a rare perennial herb
The observed variation is very large in comparison with that previously observed either between or within other iteroparous herbs from open habitats, even showing some overlap with demographic patterns normally characteristic of woody plants.
Invasive behaviour of Lactuca serriola (Asteraceae) in the Netherlands: Spatial distribution and ecological amplitude
Demographic variation and population viability in Gentianella campestris: effects of grassland management and environmental stochasticity
Traditional grassland management is more favourable for G. campestris than the methods that prevail in Scandinavia today, and this indicates a serious conservation problem, because grazing has replaced traditional management in many of the remaining semi-natural grasslands throughout Europe.
Offspring fitness in relation to population size and genetic variation in the rare perennial plant species Gentiana pneumonanthe (Gentianaceae)
It is concluded that progeny from small populations of Gentiana pneumonanthe show reduced fitness and may be phenotypically more variable, and one of the possible causes is a combination of unfavourable environmental circumstances for maternal plants in small populations and increased inbreeding.
Reproductive success and clonal genetic structure of the rareArnica montana (Compositae) in The Netherlands
- S. Luijten, J. Oostermeijer, N. C. V. Leeuwen, H. D. Nijs
- BiologyPlant Systematics and Evolution
- 1 March 1996
Analysis of the genotype of all mapped rosettes in a plot of 100 m2 indicated that dense clusters often consist of identical genotypes, suggesting a clonal structure in this population of Arnica montana.
Does the presence of ant nests matter for oviposition to a specialized myrmecophilous Maculinea butterfly?
- H. Dyck, J. Oostermeijer, W. Talloen, Vivian Feenstra, Anne van der Hidde, I. Wynhoff
- BiologyProceedings of the Royal Society of London…
- 7 May 2000
This work provides evidence for ant–related oviposition patterns in Maculinea alcon in relation to the distribution of specific host–ant nests (i.e.Myrmica ruginodis) based on repeated egg counts during the flight period in two populations and shows that ant-related Oviposition can be counterbalanced by intraspecific competition and ovipposition deterrency when host plants already carry several eggs.
Genetic factors in threatened species recovery plans on three continents
An international standard, similar to the IUCN Red List framework, is recommended that requires explicit consideration of genetic aspects of long-term viability in threatened species recovery planning.