The habitat effect on the diversity of pollen resources in severalCampanulaspp. – an implication for pollinator conservation

Autor: Małgorzata Wrzesień, Bożena Denisow
Rok vydání: 2015
Předmět:
Zdroj: Journal of Apicultural Research. 54:62-71
ISSN: 2078-6913
0021-8839
DOI: 10.1080/00218839.2015.1030243
Popis: Lack of pollen, a main protein source, is widely regarded as one of the causes of pollinator decline. This study investigated the potential mass of Campanula patula L., Campanula persicifolia L., Campanula glomerata L., Campanula bononiensis L., and Campanula trachelium L. pollen that can serve as food for insect visitors. Observations and measurements were made during the period 2006–2008 on two separate sites for each species (in natural or semi-natural vs. man-made habitats). The study site was situated in the agricultural landscape on the Lublin Upland, south-eastern Poland (51°18ʹ27ʹʹN, 22°26ʹ05ʹʹE). The total pollen yield was restricted by various biotic parameters (anther size and pollen viability) and abiotic factors (habitat and/or meteorological conditions). Therefore, the pollen production may differ considerably among species and the reward of the same species can be variable among habitats and growing seasons. The total pollen yield was higher on natural and semi-natural habitats (3.7–12.7 g ...
Databáze: OpenAIRE