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Variability of morphological traits of the rare plant species Angelica palustris (Apiaceae) in managed and abandoned meadows: effect of mowing

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Kostrakiewicz-Gieralt K., Stachurska-Swakon A., Towpasz K.

Polish Journal of Ecology

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2018

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tom 66

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nr 1

The effect of meadow management type on selected population traits of the rare plant Angelica palustris was examined. The study was carried out in a regularly mown meadow (Plot I), an abandoned meadow with medium high plants (Plot II) and an abandoned meadow with high plants (Plot III) situated in southern Poland (Proszowice Plateau). Observations conducted in the years 2010 and 2011 showed greater abundance of A. palustris in Plot I than in Plots II and III. This pointed to the significance of disturbance caused by mowing, which creates gaps in the plant cover and litter layer that become safe sites for A.palustris seedling recruitment and their subsequent growth. In the abandoned meadows a diminishing share of vegetative individuals and a reduction in the number of flowering stems in generative individuals were found. The height of generative stems in the abandoned meadows was higher than in the mown one as a response to the height of neighbouring plants. The number of umbels per stem and number of umbellets per umbel were positively correlated with the height of the stem. In light of our investigations, it can be stated that regular mowing has a beneficial effect on the state of populations of A. palustris. On the other hand, the formation of highly productive generative stems with substantial numbers of inflorescences and infructescences in abandoned meadows may promote successful seed dispersal and an escape from an unfavourable site.

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Test flights of meadow communites by Apidae insects

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Kaczmarek Z., Kozlowski S.

Łąkarstwo w Polsce

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2011

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tom 14

The performed investigations were carried out on meadow complexes situated in the region of Wielkopolska recognised for its long traditions of meadow management and bee-keeping. The results of our investigations and observations show that permanent meadows exhibit sufficient floristic diversity to make them attractive for Apidae. However, flights of Apidae to visit meadow communities in order to collect nectar vary. The attractiveness of Cirsium oleraceum communities is evidently higher than that of Alopecurus pratensis, while communities with Trifolium repens and Taraxacum officinale occupy intermediate positions. All the above-mentioned plant communities are more attractive for Apoidae than Brassica napus cultivations. In addition, visits paid to individual species of plant communities also vary. Apoidae appear to favour in particular the following plant species: Vicia cracca, Trifolium sp., Taraxacum officinale, Cirsium sp., Leontodon autumnalis, Melilotus sp., Polygonum bistorta, Euphrasia rostkoviana and Lychnis flos-cuculi. Another advantage of permanent meadows is the presence in their sward of plants which blossom during the entire period of vegetation. Therefore, if we want to enhance meadow floristic diversity, it is necessary to introduce (by oversowing) into their communities plant species which are visited by Apidae most readily. In addition, it can be concluded on the basis of the performed experiments that the Apoidae population in our region is very poor and is limited to the following little species: Apis mellifera, Bombus terrestris and B. lapidaries, B. sylvarum, B. pascuorum and Halictus sp.

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Ekologiczna gospodarka na lakach i pastwiskach

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Grzegorczyk S.

Agrochemia

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1995

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nr 05

3-4

Ograniczanie wyników

1 Agrochemia

1 Polish Journal of Ecology

1 Łąkarstwo w Polsce

1 Grzegorczyk S.

1 Kaczmarek Z.

1 Kostrakiewicz-Gieralt K.

1 Kozlowski S.

1 Stachurska-Swakon A.

1 Towpasz K.

1 2018

1 2011

1 1995

Variability of morphological traits of the rare plant species Angelica palustris (Apiaceae) in managed and abandoned meadows: effect of mowing

Test flights of meadow communites by Apidae insects

Ekologiczna gospodarka na lakach i pastwiskach