Skip to main content
padlock icon - secure page this page is secure

Commonness and Long-Term Survival in Fragmented Habitats: Primula elatior as a Study Case

Buy Article:

$47.00 + tax (Refund Policy)

Abstract:

In Flanders (northern Belgium), populations of Primula elatior ( Primulaceae), an obligately outcrossing long-lived perennial herb, are widely distributed in fragmented ancient deciduous forests. We used 15 allozyme loci to investigate population genetic variation and structure of P. elatior and quantified reproductive success in the form of fruit and seed production. Based on a sample of nine populations from Flemish forests, we related these variables to population size, density (interplant spacing within populations), and isolation. With only four polymorphic loci, the levels of genetic variation within populations were low compared with those of other species with similar life-history traits. Small populations had significantly fewer alleles per locus than large populations but maintained high levels of heterozygosity. No effect of plant density was found on genetic variation within populations. Genetic differentiation among populations was low, indicating moderate levels of gene flow. Isolation by distance was observed, however, and small populations appeared to be more differentiated than large populations. These findings suggest genetic drift as a cause of loss of variation and divergence. Population size and plant density were correlated but affected fruit and seed production differently. A reduced seed production was found in small populations. Fruit abortion increased at high plant densities as a result of biparental inbreeding and neighborhood genetic structure. Our results indicate that being common is not a guarantee of long-term survival in fragmented habitats. Conservation efforts must include widely distributed species so as to prevent population collapses and consequent species decline. Forest management has to take into consideration the preservation of the herbaceous layer and avoid logging practices that damage populations of forest herbs.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: Plant Science and Nature Management, Vrije Universiteit Brussel, Pleinlaan 2, B -1050 Brussels, Belgium

Publication date: October 1, 2002

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more