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From resource variation to habitat loss: how changing environment shapes the plant-pollinator interactions
AKTER, Asma
Annotation: Akter, A. and Klecka, J. 2020. Interactive effects of temperature, water, and nitrogen availability on the growth, floral traits, and pollination of white mustard, Sinapis alba. This was an experimental approach where Sinapis alba (white mustard), an economically beneficial crop was grown under different environmental conditions. Here, we assess how different growing conditions affected the growth of S. alba and the impact of different climate changing drivers on pollination and seed production. Akter, A., Biella, P., Klecka, J. 2017. Effects of small-scale clustering of flowers on pollinator foraging behaviour and flower visitation rate. PLoS ONE 12(11): e0187976. In this part of research, we experimentally changed the spatial structure of flower in small patches and assessed the impact on the foraging behaviour of pollinators, particularly, A. mellifera. Akter, A., Biella, P., Klecka, J. 2020. Introduction of new floral resources into plant-pollinator communities: impact on flower visitation mediated by species traits. This field-based experiment showed the impact of experimentally introduced floral resources in a plant community and how the response of the pollinator communities towards the new resources were mediated by the floral traits. Biella, P., Akter, A., Pajares, A.J.M., Federici, G., Galimberti, A., Jersáková, J., Labra, M., Mangili, F., Tommasi N. and Mangili, L. 2020. Pollination strategies of a plant in an unstable habitat: the case of the narrow-endemic toadflax Linaria tonzigii (Plantaginaceae). In this field-based research we assessed the pollination and reproduction strategies of an endemic plant, Linaria tonzigii, and the relation between the genetic variation and distribution. Akter, A., Biella, P., Batáry, P., Klecka, J. 2020. Changing pollinator communities along a disturbance gradient in the Sundarbans mangrove forest: a case study on Acanthus ilicifolius and Avicennia officinalis. Global Ecology and Conservation 24: e01282. This study was carried out in the Sundarbans mangrove forest, where we assessed the impact of human disturbances and forest loss on the plant-pollinator communities.
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Effect of floral rewards on specialization of hoverflies (Diptera, Syrphidae) in meadows of Železné hory
Filip, Jan ; Tropek, Robert (advisor) ; Keil, Petr (referee)
Traditionally managed temperate semi-natural meadows are generally considered as one of the most diverse habitats worldwide. During the past decades, management changes and abandonment of meadows pose serious threats to communities of both flowering plants and pollinators. However, the extent to which are pollinators affected by changes in floral resources still remain unknown. To investigate the effect of floral resources on visitation specialization, species richness and abundance of hoverflies, pollination networks from 13 meadows in the Železné hory PLA were constructed and analysed. Moreover, patterns were recorded on two spatial scales, in transects and in the whole meadows. To specify the specialization of hoverfly pollinators, unvisited plant species and all resources present on a site (transect/meadow), offered by plants as floral abundance and nectar rewards, was added in the networks. Relationships between plant species richness, floral abundance and nectar sugar production were positively correlated with visitation specialization of hoverflies on the meadow scale. Species richness and abundance of hoverflies was affected by floral resources on the transect scale, unlike the specialization of hoverflies. The usage of extended network indices may act as an improvement towards the better...
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