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- Title
Pollinator limitation affects low reproductive success in populations of nectarless orchid in the Biebrza National Park.
- Authors
Brzosko, Emilia; Ostrowiecka, Beata; Mirski, Paweł; Jermakowicz, Edyta; Tałałaj, Izabela; Wróblewska, Ada
- Abstract
The deficiency of pollinators is indicated as the main factor limiting fruit set in orchids. Nectariferous species are more successful in setting fruits than nectarless species. In the present study, we tested whether pollinator limitation lowers reproductive success in populations of Cypripedium calceolus on environmental islands in the Biebrza National Park, NE Poland. Moreover, we analyzed how population size and structure affect pollination success. Our observations and results of experiments document the low level of fruiting in populations of nectarless C. calceolus (9.2% on average) and strong pollen limitation. Generally, we noted a positive relationship between pollination success and all parameters of population size (measured by both occupied area and number of clumps or shoots) and parameters measuring floral display (number of flowers in population, number of flowers in clumps, spatial structure of flowering shoots). We suggest that information about factors influencing the reproductive success of this endangered species may be useful for planning appropriate conservation actions.
- Subjects
BIEBRZANSKI Park Narodowy (Poland); ORCHIDS; PLANT reproduction; POLLINATION; FLORAL morphology; FRUIT development
- Publication
Acta Agrobotanica, 2017, Vol 70, Issue 1, p1
- ISSN
0065-0951
- Publication type
Article
- DOI
10.5586/aa.1706