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1

Diversity of ancient forest plant species in country parks

100%
Fornal-Pieniak B., Wysocki C.
Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture
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2009
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tom 30
2

Ancient forest species and the diversity of vegetation and seed bank indicate the aptitude of transformed thermophilous oak wood patches for restoration

84%
Kwiatkowska-Falinska A. J., Panufnik-Medrzycka D., Wodkiewicz M., Sondej I., Jaroszewicz B.
Polish Journal of Ecology
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2013
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tom 61
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nr 1
Thermophilous oak wood is the most species-rich forest habitat in the zone of mixed deciduous forests. A very limited amount of it has been saved in good condition. We investigated the principal hypothesis that the vegetation and seed banks, especially of the ancient forest species, are good indicators of habitat naturalness and its aptitude for restoration. Vegetation and seed bank sampling were carried out in fragments of forest with a known management and disturbance history over the past 80 years. We predicted that natural and anthropogenic transformations of tree stands would be significant factors shaping species composition and similarity of vegetation and seed banks. The closest similarity was observed between the seed banks of plots which were never logged. The least related to others was the seed bank of the logged site, whose soil was ploughed prior to tree replantation. The highest number of ancient forest species was recorded in the vegetation (33 species) and in the soil seed bank (21 species) of the least transformed patch of thermophilous oak forest. It was decreasing gradually with increase of the tree canopy cover on the research plots. Our results indicate also that the higher the coefficient of similarity between seed bank and vegetation, especially of the ancient forest species, the higher the forest’s naturalness. We conclude that restoration of thermophilous oak wood has the highest chances for success in patches with well preserved seed banks and vegetation.
3
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Vascular plants of the Maly Borek Nature Reserve in the Augustow Forest (NE Poland)

84%
Pawlikowski P., Wolkowycki D., Zaniewski P., Dembicz I., Torzewski K., Zarzecki R., Cakala A., Kotowska K., Galus M., Topolska K., Kozub L.
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
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2013
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tom 17
During the survey of the Mały Borek nature reserve (Augustów Forest, NE Poland) 236 species of vascular plants were recorded, including 10 plant species red-listed in Poland and 19 species protected under the Polish law. The most valuable species were sedges typical of the boreal coniferous forests: Carex vaginata, C. globularis and C. loliacea. The presence of neophytes was very limited (1,3% of the flora) in the area studied. The principal aim of the establishment of the reserve was the conservation of old-growth coniferous forests with long ecological continuity. Since the reserve studied consists mainly of old-growth coniferous forests, the number of species regarded as ancient forest indicators is lower (54 species) than in the well-preserved reserves with deciduous stands in north-east Poland, but still rather high. The most valuable, threatened species are bound to wetland forests that are presently disturbed due to drainage. Restoration of the former hydrological conditions is essential for the preservation of the vascular plants in the reserve.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Genetic diversity and spatial genetic structure of Stellaria holostea populations from urban forest islands

84%
Wodkiewicz M., Gruszczynska B.
Acta Biologica Cracoviensia. Series Botanica
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2014
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tom 56
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nr 1
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Soil acid phosphomonoesterase activity and phosphorus forms in ancient and post-agricultural black alder [Alnus glutinosa (L.) Gaertn.] woodlands

67%
Orczewska A., Piotrowska A., Lemanowicz J.
Acta Societatis Botanicorum Poloniae
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2012
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tom 81
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nr 2
Black alder, an N-fixing tree is considered to accelerate the availability of phosphorus in soils due to the increased production of phosphatase enzymes, which are responsible for the P release from the litter. Acid phosphatase activity plays a pivotal role in organic P mineralization in forest soils and in making P available to plants. In order to check whether Alnus glutinosa stimulates acid phosphomonoesterase (PHACID) activity, we compared enzyme activities, total P concentration (PTOT), plant-available P (PAVAIL), organic P (PORG) and inorganic P (PINORG), and organic matter content in 27 ancient and 27 post-agricultural alder woods (the latter ones representing different age classes: 11-20, 21-40 and 41-60 years) of soil samples taken from the litter and the mineral layers. Phosphomonoesterase activity, organic matter, PTOT, PINORG and PORG concentrations were significantly higher in ancient alder woods than in the soils of post-agricultural forests. Significant differences in the acid phosphatase activity, organic matter and PAVAIL concentration were noted between the litter and mineral layers within the same forest type. In recent stands the amount of organic matter and phosphatase activity increased significantly with the age of alder stands, although only in the mineral layer of their soils. Phosphomonoesterase activity, organic matter and PAVAIL content were higher in a litter layer and decreased significantly at a mineral depth of the soil. The acid phosphatase activity was significantly correlated with organic matter content in both ancient and recent stands. There was no significant relationship between PHACID activity and any P forms.
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