tPhenological relationships among entomophilous species for pollination may play an important role instructuring natural plant communities.The main aim of this work was to test whether in dry grassland communities there is a non-randomflowering pattern and if the pattern influences the species richness, and the richness of subordinate andcommon species.Field sampling was carried out in temperate dry grasslands in NE Italy. Species composition and theflowering phenology were monitored in 45 2 m × 2 m plots randomly placed over dry grasslands.To quantify the degree to which insect-pollinated species overlap in their flowering time we developeda “co-flowering index” (CF-index). The significance of the observed flowering pattern was tested using anull model.A positive correlation was found between the synchronic flowering and the number of subordinatespecies. Subordinate species showed shorter flowering length than the common species and a mostlyspecialized pollination system.Our findings suggest that flowering synchrony might be a key characteristic which may contribute toshape dry grassland composition by favouring the long lasting maintenance of rare species populationswithin the community.The comprehension of such functional relationships between species of different trophic levels is ofgreat importance for the conservation of dry grasslands and the maintenance of the ecosystem servicesthat pollination provides.
|Titolo:||Does flowering synchrony contribute to the sustainment of drygrassland biodiversity?|
|Data di pubblicazione:||2016|
|Appare nelle tipologie:||2.1 Articolo su rivista |
File in questo prodotto:
|2016_Fantinato_etal_Does-flowering-synchrony-contribute-to-dry-grassland-biodiversity.pdf||Articolo principale||Versione dell'editore||Licenza non definita||Open Access Visualizza/Apri|