Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 35

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Murawy kserotermiczne w planie ochrony Ojcowskiego Parku Narodowego

100%
Baba W.
Przegląd Przyrodniczy
|
1999
|
tom 10
|
nr 1-2
129-136
2

Carex michelii [Cyperaceae] w otulinie Ojcowskiego Parku Narodowego

100%
Baba W.
Fragmenta Floristica et Geobotanica Polonica
|
2000
|
tom 07
354-356
3

Zbiorowiska roślinne rezerwatu krajobrazowego "Dolina Eliaszówki"

100%
Baba W.
Prądnik. Prace i Materiały Muzeum im. Prof. Wł. Szafera
|
2002-2003
|
tom 13
4

Ekologiczne podstawy ochrony aktywnej i ksztaltowania ekosystemow muraw kserotermicznych w Ojcowskim Parku Narodowym i otulinie.

100%
Baba W.
Działalność Naukowa PAN. Wybrane Zagadnienia
|
2002
|
tom 14
59-61
5

Nowe naturalne stanowisko zawilca wielkokwiatowego Anemone sylvestris w Ojcowskim Parku Narodowym

100%
Baba W.
Chrońmy Przyrodę Ojczystą
|
2013
|
tom 69
|
nr 1
Nowe stanowisko zawilca wielkokwiatowego Anemone sylvestris L., gatunku uznanego dotąd za wymarły na terenie Ojcowskiego Parku Narodowego, znaleziono w północnej części Parku, w masywie Skał Wdowich. Populacja licząca zaledwie 26 osobników jest silnie zagrożona ocienieniem przez rozrastające się krzewy oraz podatna na stochastyczne zmiany środowiska. W celu jej zachowania należy koniecznie rozszerzyć dotychczasowe zabiegi ochronne
6

Ekologiczne podstawy ochrony aktywnej i kształtowania ekosystemów muraw kserotermicznych w Ojcowskim Parku Narodowym i otulinie. II. Zmiany składu florystycznego badanych poletek

100%
Baba W.
Prądnik. Prace i Materiały Muzeum im. Prof. Wł. Szafera
|
2002-2003
|
tom 13
7

Zmiany w populacji wisienki stepowej Cerasus fruticosa Pall. w Ojcowskim Parku Narodowym

100%
Baba W.
Ochrona Przyrody
|
2000
|
tom 57
73-84
8

Ekologiczne podstawy ochrony aktywnej i kształtowania ekosystemów muraw kserotermicznych w Ojcowskim Parku Narodowym i otulinie. III. Zmiany struktury zbiorowisk pod wpływem zastosowanych zabiegów

100%
Baba W.
Prądnik. Prace i Materiały Muzeum im. Prof. Wł. Szafera
|
2002-2003
|
tom 13
9

Ekologiczne podstawy ochrony aktywnej i kształtowania ekosystemów muraw kserotermicznych w Ojcowskim Parku Narodowym i otulinie. I. Wprowadzenie

100%
Baba W.
Prądnik. Prace i Materiały Muzeum im. Prof. Wł. Szafera
|
2002-2003
|
tom 13
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Changes in the structure and floristic composition of the limestone grasslands after cutting trees and shrubs and mowing

100%
Baba W.
Acta Societatis Botanicorum Poloniae
|
2003
|
tom 72
|
nr 1
The calcareous grasslands belong to the species-rich plant communities in Poland. Most of them are of anthropogenic origin and they need specific management (i.e. periodical cutting suckers of trees and shrubs, grazing or mowing) in order to protect their floristic diversity. Many of calcareous grasslands have been overgrown by shrubs as a result of cessation of traditional management. The aim of this study was to compare the structure and dynamics of xerothermic hazel shrub patches, which were undergoing secondary succession with patches where different management practices aiming at restoration of species-rich limestone grassland were applied. The managed plots had a significantly higher species richness than the control one. However, they strongly differed in their floristic composition from well-preserved limestone grasslands. There were also significant differences observed between both the managed plots. Too intensive management, particularly frequent mowing of herbs resulted in expansion of grass species such as Brachypodium pinnatum and Calamagrostis arundinacea and caused a sharp decline in species richness. The species composition and turnover rate strongly depended on succesional stage (soil layer thickness) of plots at the start of the experiment. The deeper was the soil, the higher was the rate of species turnover and the smaller was the share of xerothermic and thermophilous species. The last mentioned group was dominated by species with a persistent seed bank in the soil, frequently colonizing anthropogenic habitats.
11
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The small-scale species mobility in calcareous grasslands - example from Southern Poland

100%
Baba W.
Acta Societatis Botanicorum Poloniae
|
2005
|
tom 74
|
nr 1
In this paper I use the different measures of species mobility to describe the fine small-scale dynamics of calcareous grassland built mainly by perennial species and developed in the highly heterogeneous habitat of calcareous rocks. The community showed the low dynamics on a plot-scale (100 m2) and a high one on the scale of 1 m2. However, the studied species differed greatly in calculated indices: turnover rate, (T; 6-64), residence time (RT; 0.5-21.8 y) and carousel time (CT; 4-420 y) as well as the observed tendency to persistence on the spots (PERSIST) and their re-colonisation (AGAIN). This allowed to distinguish the three groups of species: (1) "core species" characterized by high frequency and low T and high CT and RT values, which determine the low dynamics of a community on the plot scale, (2) species with intermediate mobility rate and (3) the group with high mobility rate. The observed cumulative frequencies of all the studied species (CFobs) were much lower than expected under the random re-assignation model (CFRR). Moreover, they were also lower than those predicted by random immigration model (CFRI). The results showed that the "complex carousel" model rather than "single carousel" one explained better the small-scale dynamics of calcareous grasslands.
12

Udział traw (Poaceae) w zbiorowiskach roślinnych wykształcających się w nieużytkach hutnictwa żelaza występujących na obszarze Wyżyny Śląskiej

63%
Kompala-Baba A., Baba W.
Fragmenta Floristica et Geobotanica Polonica
|
2013
|
tom 20
|
nr 2
13

The influence of standing vegetation height on the reproductive allocation In populations of Serratula tinctoria L. (Asteraceae)

63%
Kostrakiewicz-Gieralt K., Baba W.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 1
The advantage of the clonal plants over the nonclonal species in colonization of all biomes and biogeographical regions primarily is due to occurrence of two modes of reproduction. The creating of vegetative propagules with high vitality and survivability, enables the spread in the newly colonized site, while seed production increases the chances for successful recruitment of seedlings, ensuring the genetic diversity of the population. The differences in allocation into vegetative reproduction and generative propagation in relation to rising height of adjacent plants was investigated in populations of Serratula tinctoria L., occurring in Molinietum caeruleae meadows localized in Southern Poland. Each locality was represented by randomly established three permanent study plots: dominated by small meadow species (LOW), prevailed by large-tussock grasses (INTER) and overgrown by shrubs and trees (HIGH). In the years 2009–2011 the number of leaf rosettes and length of the longest leaf in rosette (as a measure of allocation in vegetative propagation), as well as height of generative stems, number of capitula per stem and number of seeds per capitulum (as indicators of investment in generative reproduction) were observed. The allocation in vegetative reproduction decreased along the gradient of vegetation height. The gradually decline of number of rosettes might be caused by lack of free space suitable for establishment of new ramets, whereas the small leaf size could be due to drastically augmentation of shading. The allocation in generative reproduction increased along the gradient of vegetation height. The placement of structures necessary for generative propagation in higher layers of herbaceous canopy, as well as considerable number of capitula and seed production might increase the chances for successful recruitment of seedlings. On the basis of obtained results combining with published data it should be assumed, that the substantial allocation in vegetative reproduction and the slight investment in generative propagation seems to be sufficient for persistence of Serratula tinctoria populations in patches dominated by small meadow species, while the considerable allocation in generative reproduction could be crucial for maintenance of population viability under competitive conditions.
14

Chlorophyl fluorescence in evaluation of habitat preferences of alien species Solidago graminifolia

63%
Baba W., Kompala-Baba A.
Acta Physiologiae Plantarum
|
2016
|
tom 38
|
nr 01-10th International Conference Plant Functioning under Environmental Stress...
15

Piaskownie jako centra bioroznorodnosci

63%
Baba W., Kompala A.
Środowisko i Rozwój
|
2003
|
nr 07(1)
16

Rośliny naczyniowe rezerwatu "Wąwóz Bolechowicki"

63%
Michalik S., Baba W.
Prądnik. Prace i Materiały Muzeum im. Prof. Wł. Szafera
|
2002-2003
|
tom 13
17

The spontaneous succession in a sand-pit: the role of life history traits and species habitat preferences

63%
Kompala-Baba A., Baba W.
Polish Journal of Ecology
|
2013
|
tom 61
|
nr 1
The prediction of species response to human activity is of great interest in contemporary restoration ecology. The purpose of the article was to analyse which species life history traits and species habitat preferences are important during succession after the abandonment of mining activity in a sand-pit. During a 15-year period (1996–2010), 176 phytosociological relevés were placed within vegetation patches of different ages and divided according to soil moisture, thus forming two series of chronosequences that ranged from 0 to ca. 50 years. The datasets were analysed using both DCA/CCA ordinations and regression trees. The successional gradient, apart from the theoretically predicted replacement R by C strategists, revealed the occurrence of stresstolerant ruderals and competitive ruderals in the early successional stages. However, differences were observed between the wet and dry series. On dry soils the ruderals, anemochorous and windpollinated species dominated in the early phases. In the middle successional phases, a preponderance of anemochorous species (nanophanerophytes, light or semi-shade demanding species), nitrogen-poor and competitive ruderals or species typical for nitrogen-rich soils was recorded. In the late successional stages, species with both the ability of vegetative and generative reproduction appeared. On the other hand, on wet sites in the early successional phases, species with vegetative growth, hydrophytes, chamaephytes and stresscompetitors prevailed. Later in the succession, they were replaced by insect-pollinated species in nitrogen rich habitats and stress-tolerant ruderals on less fertile habitats. Finally, competitors started to prevail. Knowledge of the environmental conditions of a given site, the ecological processes and species biology can assist in achieving the desired goals or in initiating or enhancing succession on some disturbed sites.
18

Aktywna ochrona polnaturalnej murawy kserotermicznej na Skale Krukowskiego w Ojcowskim Parku Narodowym

63%
Michalik S., Baba W.
Ochrona Przyrody
|
1999
|
tom 56
51-59
19

Udział traw w zbiorowiskach roślinnych wykształcających się na obszarze wybranych kamieniołomów Wyżyny Śląskiej

63%
Kompala-Baba A., Baba W.
Fragmenta Floristica et Geobotanica Polonica
|
2011
|
tom 18
|
nr 2
20

Zbiorowiska roślinne rezerwatu "Wąwóz bolechowicki" na Wyżynie Krakowskiej

63%
Baba W., Michalik S.
Prądnik. Prace i Materiały Muzeum im. Prof. Wł. Szafera
|
2002-2003
|
tom 13
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.