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Pinus mugo Turra geographic differentiation based on needle characters

100%

Boratynska K., Muchewicz E., Drojma M.

Dendrobiology

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2004

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tom 51

9-17

The needles of 17 samples representing 15 populations of Pinus mugo Turra from the Alps, Apennines, Sudethians, Carpathians and Rhodopes were analysed in respect to 15 morphological and anatomical characters. The results of measurements were analysed statistically. The variation of the samples was generally not to large. Populations from the East Carpathians appeared different from all other examined. Two formed groups of analysed populations are separated mainly by thickness of epidermal cells, width/thickness of epidermal cell ratio, needle width and needle thickness. The differences between two groups of populations suggest their longer separation during Pleistocene.

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Parietaria pensylvanica Muhlenb.ex Willd. - mozliwosci migracji z siedlisk parkowych do zbiorowisk segetalnych

80%

Sawilska A. K., Misiewicz J.

Acta Agrobotanica

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2000

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tom 53

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nr 1

65-74

Parietaria pensvlvanica Mühlenb ex. Willd is a species nalive to North America, whose occurrence in Poland was first reported in Bydgoszcz in 1991. Its biology and ecology has been researched since 1996. The present paper discusses measurements and phenological observations carried out on four selected populations during the vegetation season in 1997. The aim of the research was to determine potentialities of the migration of P. pensylvanica from park habitats to segetal communities, on the basis of a defined life strategy of the examined populations. The analysis focused on the dynamics of density and bipniiiss as well as on the weight of 1000 nucules, against the habitat conditions. The findings demonstrated that the investigated species was characterised by a set of life strategy properties referred lo as C-S-R or S-R, and was subject to the "r"-type selection. P. pensylvanica has become an integral pari of the Bydgoszcz flora and is likely to expand into segetal communities of agricultural and vegetable crops.

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Podstawy teorii metazbiorowisk rolinnych

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Szymura T. H., Szymura M.

Acta Botanica Silesiaca

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2015

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tom 11

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Alien plants in Poland: research directions and putting the results into practice

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Tokarska-Guzik B., Bzdega K., Nowak T., Lewandowska A., Gancarek M., Frelich M.

Biodiversity: Research and Conservation

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2014

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tom 35

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Seed dispersal by the Rook Corvus frugilegus L. in agricultural landscape - mechanisms and ecological importance

80%

Czarnecka J., Kitowski I.

Polish Journal of Ecology

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2010

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tom 58

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nr 3

The study aimed to evaluate the role of the Rook Corvus frugilegus in the long-distance seed dispersal in agricultural landscape. According to the literature, Rooks feed in the distance 0.3–1 km from the breeding colonies and 10–40 km from winter communal roosts, and these can be also the potential seed dispersal distances. We concentrated on the dispersal of diaspores of ornitochorous species and weeds (called non-ornitochorous) taken probably incidentally during foraging for other edible plant material. The contents of 528 pellets was analysed, 304 were collected at six sites of breeding colonies located in five rural parks and in one park on the city outskirts, and 224 under three winter roosts in the cities. Seeds representing 45 taxa were found, the most important groups among them are: ornitochorous species (10 taxa), non-ornitochorous (27 taxa, mainly weeds and ruderal species) and cereals (4 species). The mean number of seeds varied between 221 and 442 seeds per 100 pellets in the case of breeding colonies, and between 102 and 347 for wintering roosts. Fruits of ornitochorous species are an important element of the diet of the Rook: Cerasus avium and Fragaria sp. during breeding season and Vitis sp., Sorbus aucuparia and Sambucus nigra during winter. Nonornitochorous species are present in pellets in lower numbers and frequencies than ornitochorous ones and they can be divided into two groups: those transported during breeding season (mainly Stellaria media) and those during winter (Setaria sp. and Echinochloa crus-galli). We estimated that the number of non-ornitochorous seeds transported by birds from the biggest observed winter roosts can exceed 400 thousands seeds per month. The value is much lower in the case of the biggest breeding colony: approximately 16 thousands of propagules. We also checked if species found in pellets can germinate in natural conditions under the studied colonies. Viable individuals of 15 nonornitochorous and of one ornitochorous species were found there, and it was observed that disturbances of soil surface promote germination of some analysed species.

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Migracja gatunkow roslin w dolinie rzeki Warty u ujscia Noteci

71%

Gamrat R.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2006

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tom 515

89-96

W pracy przedstawiono porównawcze wyniki badań florystycznych dwóch odcinków doliny rzeki Warty położonej w województwie lubuskim: rezerwatu „Zakole Santockie” na lewym brzegu (o powierzchni 150 ha) oraz doliny pomiędzy wsiami Santok a Starym Polichno w części prawobrzeżnej (o powierzchni 15 ha). Na prawym brzegu rzeki badania przeprowadzono w latach 2003 - 2005, a dokumentację części lewobrzeżnej wykonał Janyszek w 1993 roku. Flora rezerwatu okazała się bardziej różnorodną (314 gatunków). Na obu obszarach stwierdzono 345 gatunków głównie siedlisk łąkowych i związanych z wodą oraz ruderalnych i segetalnych (chociaż wskaźnik synantropizacji był niski). Na obu terenach dominowały byliny, szczególnie gatunki rodzime, trwałe i będące pod zasięgiem jednego obszaru geograficznego.

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Flora naczyniowa antropogenicznych stawów w rezerwacie „Polder” (Dolny Śląsk)

61%

Klupak M., Szczesniak E.

Acta Botanica Silesiaca

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2010

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tom 05

The object of the research was flora of four anthropogenic ponds formed in the Polder nature reserve. Flora consists of 172 taxa, including 3 pteridophytes and 1 gymnosperm. 97% are native species classified as apophytes. 154 taxa are species of diagnostic value of 18 phytosociological classes; species of the Molinio- Arrhenatheretea and Phragmitetea australis classes dominate. 23 species (13% of flora) are undoubtedly new on researched area and their propagules were transported by birds. 5 species are protected by low, 2 are threatened of extinction in Poland and 9 are included into a regional red list of Lower Silesia. Ponds forming had the small influence on the local biodiversity, but new species are valuable and should be actively protected.

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Problem roslinnych gatunkow inwazyjnych w Polsce

61%

Miklaszewska K., Pagowska E.

Progress in Plant Protection

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2007

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tom 47

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