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1

Ogolnopolskie Seminarium nt. Biologia i ekologia populacji roslin: skad przychodzimy - dokad zmierzamy? [Zwierzyniec, 23-26 czerwca 2008]

100%
Franczak M.
Wiadomości Botaniczne
|
2008
|
tom 52
|
nr 3-4
119-123
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Necromass as seed reservoir in macroforb meadows with varied moisture conditions

63%
Franczak M., Czarnecka B.
Acta Agrobotanica
|
2016
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tom 69
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nr 4
Necromass, i.e., dead plant parts, has a great impact on the spatial patterns of populations and communities. Depending on its thickness and the degree of decomposition, it may constitute a space-blocking physical barrier and impede recruitment of individuals due to, e.g., autotoxication. The aim of the study was to determine the role of the necromass layer in formation of the soil seed bank of variously moist meadow communities and its influence on the efficiency of generative reproduction. The authors paid special attention to the possibility of capture and storage of seeds of species occurring in the vegetation cover by necromass. Additionally, selected features of seeds of species present on the necromass were analyzed in order to identify species that can potentially contribute to formation of the necromass seed bank. The plant cover comprised 52 species in total. Seedlings of 21 taxa appeared on the necromass and their number ranged from 10 to 13, depending on the patch. The density of the seedlings ranged from 339 to 4923 m−2. In all patches, Lythrum salicaria and Lysimachia vulgaris seedlings were most numerous. These two species were characterized by the highest frequency as well. The low values of Jaccard’s index (0.28–0.36) imply a low share of taxa that are common for the necromass and the vegetation cover. This result should be explained by the occurrence of large disproportions in the number of all species identified on the necromass and among the vegetation. The seeds are typically characterized by small sizes and usually have smooth or finely striated and/or ribbed surface texture. The presence of additional structures, e.g., pappus and hairs, in the largest and heaviest seeds (Crepis paludosa, Geum rivale, and Cirsium spp.) may help seeds capture in the necromass.
3
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Funkcjonowanie niewielkich obiektów hydrogenicznych w krajobrazie rolniczym na przykładzie zagłębień bezodpływowych obszaru Kotliny Chodelskiej

63%
Franczak L., Franczak M.
Problemy Ekologii Krajobrazu
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2012
|
tom 33
4

Forming the structure and dynamics of clonal species populations under water stress

63%
Franczak M., Czarnecka B.
Acta Societatis Botanicorum Poloniae
|
2010
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tom 79
|
nr Suppl.1
5

Seed bank and vegetation in a closed depression in agricultural landscape: relation to moisture conditions and soil properties

63%
Franczak M., Franczak L.
Polish Journal of Ecology
|
2020
|
tom 68
|
nr 3
6
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Changes in vegetation and soil seed bank of meadow after waterlogging caused by Castor fiber

63%
Franczak M., Czarnecka B.
Acta Societatis Botanicorum Poloniae
|
2015
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tom 84
|
nr 2
Soil waterlogging is among abiotic stresses that influence species composition and productivity in numerous plant communities. The aim of the study was to find answer to the question of how waterlogging caused by beavers’ activity induces quantitative and qualitative changes of vegetation and soil seed bank levels of variable-moist meadows. An immediate effect of the waterlogging at the level of vegetation was the decline in species richness and a decrease in the values of the biodiversity index. Water stress inhibited growth and development of plants already present and, primarily, impeded recruitment of new individuals of species characteristic of variable-moist meadows, e.g. Cirsium rivulare, Filipendula ulmaria and Lythrum salicaria, which were replaced by Carex acutiformis. Prolonged waterlogging did not induce equally substantial changes in the soil seed bank as in the vegetation. Both in the waterlogged and control patches, slightly decreased species richness and biodiversity index were recorded. After waterlogging withdrawal, the reserves of the soil seed bank were slightly higher than the initial values. The differences were not statistically significant. In the waterlogged patch, the qualitative floristic similarity between taxa identified in the soil seed bank and vegetation cover declined, which was evidenced by the value of Jaccard’s index decreasing from 0.46 to 0.36. A reverse relationship was found in control patch, where the value of the similarity index slightly increased from 0.41 to 0.48.
7
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Temporal changes of meadow and peatbog vegetation in the landscape of a small-scale river valley in Central Roztocze

63%
Czarnecka B., Franczak M.
Acta Agrobotanica
|
2015
|
tom 68
|
nr 2
The Szum is a right-side tributary of the Tanew River crossing the southern escarpment zone of the Central Roztocze region (SE Poland). Downstream of the strict river break in a section between the 10th and 12th km of the river course in the Szum valley, meadow and peatbog complexes have developed, associated with semi-hydrogenic and marshy soils. In an area of approx. 13 ha of the most valuable non-forest habitats, a variety of plant communities have been identified, including habitats of the Natura 2000 network and habitats that are protected under the Regulation of the Minister of the Environment (2001). These are, for instance, meadow associations Lysimachio vulgaris-Filipenduletum, Lythro-Filipenduletum, Filipendulo ulmariae-Menthetum longifoliae, Angelico-Cirsietum oleracei, and Cirsietum rivularis. The moss–sedge and sphagnum bog communities comprise noteworthy associations Caricetum limosae, Rhynchosporetum albae, Caricetum lasiocarpae, Caricetum paniceo-lepidocarpae, Caricetum davallianae, and Sphagnetum magellanici. These communities are composed of ca. 160 vascular plant species and 40 moss and liverwort species. In 1999–2014, the greatest changes occurred within macroforb meadows, i.e. small Angelico-Cirsietum oleracei and Cirsietum rivularis patches have been transformed into Lysimachio vulgaris-Filipenduletum, while some patches of the latter association have been transformed into a Caricetum acutiformis rush. Several patches of bog-spring associations Caricetum paniceo-lepidocarpae and Carici canescentis-Agrostietum caninae have been irretrievably destroyed. Sphagnetum magellanici appears to be the least stable community among the preserved peatbogs. The changes of meadow and peatbog vegetation observed for the last 15 years are a consequence of natural processes that take place in the river valley and to a large extent human activity connected with the so-called small-scale water retention as well as the presence of a beaver colony in the area and later the abandonment of this area by beavers. Despite the multidirectional changes, the peatbogs of the Szum valley have retained their high species and phytocoenotic diversity, which indicates a substantial degree of naturalness.
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Reproductive effort as an element of life strategy of Lythrum salicaria L. populations

51%
Czarnecka B., Franczak M., Nowak K.
Acta Agrobotanica
|
2007
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tom 60
|
nr 2
The aim of the study was to compare some life strategy traits of individuals of Purple Loosestrife Lythrum salicaria within three meadow populations existing under various habitat conditions. The study attempted to answer the following questions: Do different habitat conditions affect the biomass allocation between particular organs of individuals? Can the individuals belonging to different populations of the same species realise their own unique reproductive strategy, in other words, can their reproductive effort represent various levels? In the case of L. salicaria the reproductive effort, measured by the participation of inflorescence biomass in the biomass of aboveground parts of genets, exhibits similar values (14.2-15.1%) in all the study populations, despite their habitat conditions. This fact proves that at the population level, the reproductive effort is relatively stable. Great differences are visible in the case of particular individuals within each of the populations. Specific genets in a population, depending on the habitat microstructure and the biotic relations with other individuals both of their own and other species, may realise their own reproductive strategies, being a part of their life strategies.
9

Wpływ warunków socjoekonomicznych na sposób żywienia i zwyczaje żywieniowe młodzieży 13–15-letniej z Wrocławia i okolic

39%
Piotrowska E., Broniecka A., Franczak M., Bronkowska M., Wyka J., Biernat J.
Bromatologia i Chemia Toksykologiczna
|
2014
|
tom 47
|
nr 2
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