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3 Biuletyn Szadkowski

3 2012

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Mszaki rezerwatu „Jamno”

100%

Wolski G. J. , Woziwoda B. , Pawicka K.

Biuletyn Szadkowski

2012

nr 12

159-170

The 39 bryophytes species – seven liverworts and 32 mosses belonged to 21 families have been noted in “Jamno” nature reserve in 2011. Hypnaceae, Brachytheciaceae and Dicranaceae are families represented by the highest number of species (see table 1). Bryophytes grow on various type of habitat: epigeic – mineral soil, humus and litter, epiphytic – bark of trees, epixylic – tree stumps and epilithic – stones. The highest number of mosses was found on bark of silver firs Abies alba, pedunculate oaks Quercus robur, silver birches Betula pendula and Scots pines Pinus sylvestris. Five valuable protected species Dicranum scoparium, Leucobryum glaucum, Pleurozium schreberi, Pseudoscleropodium purum and Thuidium tamariscinum were noted in this small forest reserve. The occurrence of one mountain species Hypnum pallescens is also interesting and noteworthy.

Charakterystyka lasu grądowego z jodłą w rezerwacie „Jamno”

100%

Woziwoda B. , Pawicka K. , Wolski G. J.

Biuletyn Szadkowski

2012

nr 12

127-143

The “Jamno” nature reserve was established to protect the forest community with European silver fir Abies alba Mill. on the northern border of natural occurrence of this tree species in Poland. The results of current phytosociological studies (done in 2011) show that the oak-hornbeam forest – Tilio-Carpinetum calamagrostietosum association with Abies alba, exist within reserve. The present structure and species composition of studied community is determined by spontaneous changes of tree stand. The different proportion of silver fir in shrub and tree stand layers indicate the dynamic changes within this species population.

Flora roślin naczyniowych rezerwatu „Jamno”

100%

Pawicka K. , Woziwoda B. , Wolski G. J.

Biuletyn Szadkowski

2012

nr 12

145-157

The 96 Vascular plant species belonging to 36 families have been identiﬁed in “Jamno” nature reserve during ﬁeld investigations which were done in 2011. The species represent different types of growth (= life forms in Raunkiaer”s classiﬁcation system), With hemicryptophytes being the dominant form. The ﬁora contains plants from Various ecological groups depending on light requirements, moisture of the soil, soil acidity and soil trophy. Most of the plants tolerates shaded and semi-shaded sites, fresh and moderately acid or nearly neutral soils of intermediate fertility. The indigenous forest species are the most valuable components of flora. Among them Convallaria majalis, Frangula alnus and Viburnum opulus are protected by law. The parasite plant Monotropa hypopitis and half-parasites: Viscum abietis, Malampyrum nemorosum and Melampyrum pratense, are “botanical curiosities” of the reserve.