Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1111/j.1469-8137.2007.02179.x
Title (Primary) A spatially explicit analysis of seedling recruitment in the terrestrial orchid Orchis purpurea
Author Jacquemyn, H.; Brys, R.; Vandepitte, K.; Honnay, O.; Roldán-Ruiz, I.; Wiegand, T.
Source Titel New Phytologist
Year 2007
Department OESA
Volume 176
Issue 2
Page From 448
Page To 459
Language englisch
Keywords microsite limitation; Orchidaceae; Orchis purpurea; seed germination; seed limitation; spatial point pattern analysis
Abstract Seed dispersal and the subsequent recruitment of new individuals into a population are important processes affecting the population dynamics, genetic diversity and spatial genetic structure of plant populations.Spatial patterns of seedling recruitment were investigated in two populations of the terrestrial orchid Orchis purpurea using both univariate and bivariate point pattern analysis, parentage analysis and seed germination experiments.Both adults and recruits showed a clustered spatial distribution with cluster radii of c. 4-5 m. The parentage analysis resulted in offspring-dispersal distances that were slightly larger than distances obtained from the point pattern analyses. The suitability of microsites for germination differed among sites, with strong constraints in one site and almost no constraints in the other.These results provide a clear and coherent picture of recruitment patterns in a tuberous, perennial orchid. Seed dispersal is limited to a few metres from the mother plant, whereas the availability of suitable germination conditions may vary strongly from one site to the next. Because of a time lag of 3-4 yr between seed dispersal and actual recruitment, and irregular flowering and fruiting patterns of adult plants, interpretation of recruitment patterns using point patterns analyses ideally should take into account the demographic properties of orchid populations.
Persistent UFZ Identifier
Jacquemyn, H., Brys, R., Vandepitte, K., Honnay, O., Roldán-Ruiz, I., Wiegand, T. (2007):
A spatially explicit analysis of seedling recruitment in the terrestrial orchid Orchis purpurea
New Phytol. 176 (2), 448 - 459 10.1111/j.1469-8137.2007.02179.x