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1

Nowe stanowisko ozorka debowego Fistulina hepatica [Schaeff.]:Fr. w okolicach Koszalina

100%
Zolkos K.
Chrońmy Przyrodę Ojczystą
|
2006
|
tom 62
|
nr 4
103-105
2

Rozmieszczenie, wymagania ekologiczne i udzial Empetrum nigrum L. w zbiorowiskach Slowinskiego Parku Narodowego

100%
Zolkos K.
Parki Narodowe i Rezerwaty Przyrody
|
1994
|
tom 13
|
nr 2
79-95
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

What to divide leaves into ten parts for? The proposition of shape indices of leaf blade

63%
Meissner W., Zolkos K.
Dendrobiology
|
2008
|
tom 60
29-33
In this paper the method of creating indices for description leaf blade roundness and asymmetry, based on division of the leaf into 10 equal parts perpendicularly to the long axis was proposed. Along each division line the distance between the midrib and the leaf edge was measured separately for the left and right site of the blade. Sum of all 18 measurements, 9 on each side, may be treated as an index of the roundness of the leaf blade. Differences between sums of all measurements of the left and right leaf site could be a base for calculations of various asymmetry indices, including indicators of fluctuating asymmetry. Indices obtained by this method are quite sensitive and may be analysed using standard statistical methods.
4

Does the Magpie Pica pica (L.) prefer poplars as a nesting tree in the urban environment?

63%
Meissner W., Zolkos K.
Polish Journal of Ecology
|
2010
|
tom 58
|
nr 2
This paper aims to verify the hypothesis that magpies in urban environments favour poplars as nesting trees, as suggested by previous authors. The fieldwork was conducted in a 180 ha area in a district of Gdańsk (North Poland). The study area held 5294 trees and high shrubs, where 124 magpie nests were found in 10 species of trees. Results of log-linear analysis showed that the magpies chose particular tree species rather than types of spatial tree organization. The lombardy poplar (Populus nigra “Italica”) is the species most frequently chosen as a nest tree, however – the magpies showed a significant preference for trees growing separately or in pairs. The choice index (the ratio of expected to observed frequency) confirmed the magpies’ strong preference for black poplar cultivars and for birches, regardless of the trees’ grouping. The magpies preferred lombardy poplar when they had the choice of two poplar cultivars. This cultivar has a crown suitable for the magpie’s nest construction because of the small angle between the trunk and the branches. The thin, almost vertical branches probably also limit predators from penetrating the crown because these branches do not provide much support for tree climbers. The large-scale planting of lombardy poplars in Polish towns in the 1960s and 1970s has probably contributed to the significant increase of the magpie population in the urban environment.
5

A simple technique of random leaf collecting for biometric studies in a tree stand

63%
Zolkos K., Meissner W.
Biodiversity: Research and Conservation
|
2009
|
tom 15
6

Aktualna ocena populacji Anthericum lilago L. w Wolinskim Parku Narodowym

63%
Zolkos K., Rutkowski P.
Parki Narodowe i Rezerwaty Przyrody
|
1996
|
tom 15
|
nr 2
41-45
7

The effect of Grey Heron [Ardea cinerea L.] colony on the surrounding vegetation and the biometrical features of three undergrowth species

63%
Zolkos K., Meissner W.
Polish Journal of Ecology
|
2008
|
tom 56
|
nr 1
Bird breeding colonies are known to influence the habitats and phytocoenoses they occupy in different ways. Most papers concern long-lasting colonies, in which floristic composition of phytocoenoses have been already altered largely. This research was aimed to estimate the changes in the floristic composition of the forest phytocoenosis after three years of the existence of the Grey Heron (Ardea cinerea L.) breeding colony as well as to examine the influence of nutrient enrichment on the size and shape of leaves and inflorescences of three plant species Rumex acetosella L., Anthoxanthum odoratum L. and Moehringia trinervia (L.) Clairv., which have different habitat requirements. The number of vascular plant species within the colony area (0.4 ha) increased almost double and appearance of new, mostly nitrophilous, taxa like Sambucus racemosa L., Galeopsis pubescens Besser and Stellaria media (L.) Vill. were observed. The vertical structure of phytocoenosis has also changed. The undergrowth appeared and dense moss layer was mostly eliminated. In case of all investigated species, the enlargement of leaf surface was found. The greatest relative increase concerned leaf width of Moehringia trinervia and Rumex acetosella – 67 and 73%, respectively. The leaf blade of Anthoxanthum odoratum increased largely in length (99%). The enlargement of the surface of assimilative apparatus was not only due to the increase of linear dimensions, but also to rounding of the leaf blade. This was not observed in case of Rumex acetosella which is characterized by elongated, lanceolate leaf blade. Differences observed among the species are probably due to differentiated leaf blade structure. Only Moehringia trinervia can be found in well-established Grey Heron colonies, while Rumex acetosella and Anthoxanthum odoratum are known to be suppressed by heavy input of nitrogen fertilizer. Thus, it seems that after few years of benefits at least Rumex acetosella and Anthoxanthum odoratum withdraw from the area altered by Grey Heron colony, because the change in root absorption and capacity in highly fertile habitat leads to toxic accumulation of nutrients.
8
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Problems of metaplantation of protected species - a case study of sea holly (Eryngium maritimum L.) and dark red helleborine (Epipactis atrorubens (Hoffm.) Besser)

51%
Zolkos K., Afranowicz R., Bloch-Orlowska J., Minasiewicz J.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
2010
|
tom 14
In June 2005 metaplantation of Eryngium maritimum and Epipactis atrorubens, from the build area of the Gdańsk Container Terminal into Sobieszewska Island was carried out. The reason for that immediate action was the unreliable report of the influence of investment on the environment, in which the mentioned above species have not been included. Metaplantation was conducted during one day time, by 21 volunteers. Altogether, 146 individuals of Sea Holly and 184 ones of Dark Red Helleborine have been translocated. Detailed measurements of each individual were made. On the new site, all planted individuals were permanently labelled. The newly constituted populations have been taken under monitoring. With regard to species of special concern, metaplantation of threatened populations seems to be the most beneficial form of nature compensation expected from the investors. Still, there are no unambiguous procedures for its executing.
9

Walory przyrodnicze terenu projektowanego Nadmorskiego Ogrodu Botanicznego (Gdynia) (komunikat)

51%
Bloch J., Zolkos K., Szlachetko D. L.
Biuletyn Ogrodów Botanicznych, Muzeów i Zbiorów
|
2002
|
tom 11
10

Kruszczyk ostry Epipactis leptochila nowy dla Polski gatunek storczyka

51%
Zolkos K., Minasiewicz J., Szlachetko D. L.
Chrońmy Przyrodę Ojczystą
|
1998
|
tom 54
|
nr 2
91-94
11

Nowe stanowisko Corallorhiza trifida Chat. w Slowinskim Parku Narodowym

51%
Zolkos K., Majewska I., Kukwa M.
Badania Fizjograficzne nad Polską Zachodnią. Seria B
|
1998
|
tom 47
265-268
12

Liczebność i rozmieszczenie kolonii czapli siwej Ardea cinerea w północnej Polsce

39%
Zolkos K., Meissner W., Kalisinski M., Gorska E., Mellin M., Ibron I., Wysocki D.
Ornis Polonica
|
2010
|
tom 51
|
nr 1
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