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Effect of ecological factors on the zonation of wetland vegetation

100%

Hrivnak R.

Acta Societatis Botanicorum Poloniae

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2005

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tom 74

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nr 1

The influence of some ecological factors to aquatic and marsh vegetation was studied during 1998-2000. Three basic vegetation units (Caricetum buekii, Typhetum latifoliae and Ceratophylletum submersi) and three transitional communities were defined in the belt transect, which was established along the moisture gradient. The content of available soil nutrients in individual vegetation types differed only in case of the Ceratophyllum submersum community, where a higher magnesium and nitrogen content accumulated due to specific environmental conditions. Water and marsh vegetation is usually characterised by a pronounced spatial and temporal dynamics. In the studied area, its zonation was dependent from the terrain morphology, and both depth and duration of floods. The fluctuation of ground and surface water table during a three-year period caused changes in the occurrence and cover of several species (e.g. Carex buekii, Typha latifolia, aquatic macrophytes). Pronounced changes in the cover of some species occurred even within a single vegetation season due to the long-term sink of water table below the ground surface.

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Contemporary floristic changes in the Karkonosze Mts

100%

Fabiszewski J., Wojtun B.

Acta Societatis Botanicorum Poloniae

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2001

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tom 70

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nr 3

3

Contemporary habitat and floristic changes in the Sudeten Mts.

100%

Fabiszewski J., Brej T.

Acta Societatis Botanicorum Poloniae

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2000

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tom 69

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nr 3

4

The relative abundance and importance of some grass species in the weed flora in cultivated fields in the Wysoczyzna Siedlecka [Central Poland]

80%

Skrzyczynska J., Ciosek M. T.

Fragmenta Floristica et Geobotanica

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1997

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tom 42

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nr 2

5

Przekształcenia flory roślin naczyniowych Uroczyska Szczawin po 35. latach (Polska Środkowa)

71%

Daraz I., Grzelak P., Zielinska K., Grzelak A.

Acta Botanica Silesiaca

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2011

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tom 07

The vascular flora of the Szczawin forest complex was studied from 2007 to 2011. The results were compared to those of a previous study carried out from 1971 to 1976. The Szczawin forest complex is located north-east of Zgierz in central Poland. It contains the Grądy nad Moszczenicą nature reserve, which was established to preserve the oak-hornbeam forests with their rare protected plant species. There have been large changes in the 35 years since the first study. Currently, 307 plant species are found in the area. However, only 68% of the species found in the first study were found again in the second study. Of 22 protected species found in the first study, only 10 were found in the second. The share of alien species has also increased. With regards to native species, the share of non-forest native species has increased.

6

Trwałość i plonowanie traw pastewnych w fenologicznie zróżnicowanych mieszankach łąkowych

61%

Wrobel B., Jankowska-Huflejt H., Zastawny J.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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2003

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tom 225

53-64

Badania prowadzono w latach 1990–1998 w Falentach na glebie mineralnej o odczynie obojętnym. Doświadczenie założono w układzie podbloków z dwoma czynnikami: mieszanka (4 typy fenologiczne) i nawożenie (3 poziomy nawożenia azotem: 120, 180 i 240 kg/ha, na tle jednolitego nawożenia P i K). Komponentami poszczególnych mieszanek były: Dactylis glomerata L., Festuca arundinacea Schreb., F. pratensis Huds., Arrhenatherum elatius (L.) P.B., Phleum pratense L., Bromus inermis Leyss., Poa pratensis L., F. rubra L. i Trifolium pratense L. Najlepiej średnio w całym okresie plonowała mieszanka średnio wczesna (12,2 t s.m. z ha), nieco słabiej mieszanka późna (11,6 t s.m. z ha) i średnio późna (11,3 t s.m. z ha), najsłabiej zaś mieszanka wczesna (10,8 t/ha). Największe plony, bo około 20 t s.m. z ha, uzyskano w pierwszym roku badań. W następnych latach obserwowano systematyczny spadek plonowania aż do poziomu 6–7 t s.m. z ha (lata 1997–1998) niezależnie od poziomu nawożenia azotem. Udział gatunków i odmian w mieszankach odbiegał od założonego przy wysiewie. W 9. roku użytkowania w mieszance wczesnej dominowała wiechlina łąkowa (ponad 40%). Licznym gatunkiem w mieszance średnio późnej (30,1%) i w mieszance późnej (44,6%) była stokłosa bezostna, a w mieszance średnio wczesnej kostrzewa trzcinowa (41,7%). Stwierdzono całkowity zanik koniczyny łąkowej i jednocześnie pojawianie się gatunków obcych traw i ziół, w tym w dużych ilościach mniszka lekarskiego.

7

Zmiany we florze i roślinności rezerwatu leśnego „Las Mariański” (okolice Bydgoszczy)

61%

Waldon B.

Acta Botanica Silesiaca

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2011

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tom 07

180 vascular plant taxa are found in the Las Mariański forest reserve, including 21 protected and endangered species. In the last 40 years, the total number of species has increased, including the number of anthropophytes. Spontaneous forest succession has taken place on previously open terrain, resulting in a slight increase in the share of species typical for the class Querco-Fagetea and a 9% decrease in the share of thermophilic species typical of the classes Festuco-Brometea, Trifolio-Geranietea and Koelerio-Corynephoretea. There was an increase in the cover coefficients for the tree layer (Acer pseudoplatanus and A. platanoides) in patches of Tilio-Carpinetum. There are fluctuations in the cover of Carpinus betulus, Tilia cordata, Fraxinus excelsior, Ulmus glabra and U. minor. Species that once formed the understory, such as Acer campestre and Fagus sylvatica, now appear in the higher layers. Comparison of present-day phytosociological relevés with those collected in the 1960s and 1990s did not reveal any significant directional changes in the oak-hornbeam woodland vegetation. Symptoms of degeneration were recorded in all of the forest communities in the reserve. For example, the cover of shrubs on the forest floor as increased. Foreign species are spreading throughout the biochore are of the oak-hornbeam woodland, which constitutes a serious threat to the flora of the nature reserve.

Ograniczanie wyników

3 Acta Societatis Botanicorum Poloniae

2 Acta Botanica Silesiaca

1 Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

1 Fragmenta Floristica et Geobotanica

2 Fabiszewski J.

1 Brej T.

1 Ciosek M. T.

1 Daraz I.

1 Grzelak A.

1 Grzelak P.

1 Hrivnak R.

1 Jankowska-Huflejt H.

1 Skrzyczynska J.

1 Waldon B.

1 Wojtun B.

1 Wrobel B.

1 Zastawny J.

1 Zielinska K.

2 2011

1 2005

1 2003

1 2001

1 2000

1 1997

Effect of ecological factors on the zonation of wetland vegetation

Contemporary floristic changes in the Karkonosze Mts

Contemporary habitat and floristic changes in the Sudeten Mts.

The relative abundance and importance of some grass species in the weed flora in cultivated fields in the Wysoczyzna Siedlecka [Central Poland]

Przekształcenia flory roślin naczyniowych Uroczyska Szczawin po 35. latach (Polska Środkowa)

Trwałość i plonowanie traw pastewnych w fenologicznie zróżnicowanych mieszankach łąkowych

Zmiany we florze i roślinności rezerwatu leśnego „Las Mariański” (okolice Bydgoszczy)