scholarly journals Meadows with dandelions of the section Palustria in Pogórze Dynowskie, S Poland

2017 ◽  
Vol 70 (2) ◽  
Author(s):  
Krzysztof Oklejewicz ◽  
Mateusz Wolanin ◽  
Krzysztof Szubart ◽  
Paweł Marciniuk ◽  
Jolanta Marciniuk
Keyword(s):  
Field Studies ◽  
Habitat Conditions ◽  
Ecological Characteristics ◽  
S Poland

The paper presents ecological characteristics of meadows with <em>Taraxacum</em> sect. <em>Palustria</em> in Pogórze Dynowskie. Field studies were carried out using the patrol method. Floristic description was made, methods of meadow use were evaluated and habitat conditions were determined based on Ellenberg’s bioindication method on every meadow with marsh dandelions. Analyses were performed in eight sites with <em>T. mendax</em>, <em>T. paucilobum</em>, <em>T. polonicum</em>, <em>T. portentosum</em>, and <em>T. vindobonense</em>.

scholarly journals Equisetum ×moorei Newman (Equisetaceae) – a ‘new’ nothotaxon in the Polish flora

2016 ◽  
Vol 41 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Paweł Kalinowski ◽  
Elwira Sliwinska ◽  
Jerzy Kruk
Keyword(s):  
Content Analysis ◽  
Dna Content ◽  
Nuclear Dna ◽  
Nuclear Dna Content ◽  
Field Studies ◽  
Habitat Requirements ◽  
Triploid Hybrid ◽  
Historical Distribution ◽  
Diploid Taxon ◽  
S Poland

Abstract To investigate present and historical distribution of Equisetum ×moorei in Poland and its habitat requirements, field studies at sites of potential occurrence of this hybrid taxon as well as literature and herbarium search were performed. As a results of these investigations, E. ×moorei was found at five contemporary and at a few historical localities in the present territory of Poland. Since the Equisetum populations near Olkusz (S Poland) showed phenotype similar, to some extent, to triploid hybrid E. ×ascendens, we performed nuclear DNA content analysis of these populations. However, it turned out that the investigated individuals belonged to a diploid taxon that can be ascribed to E. ×moorei.

scholarly journals A new lowland locality for the mountain plant Streptopus amfexifolius (L.) DC. (Silesian voivodeship, Southern Poland)

2013 ◽  
Vol 1 (2) ◽  
pp. 22-28
Author(s):  
Adam Rostański ◽  
Stanisław Cabała ◽  
Jarosław Mielczarek
Keyword(s):  
Main Part ◽  
Good Condition ◽  
Field Studies ◽  
Current Status ◽  
Habitat Conditions ◽  
Forest Department ◽  
Metal Mesh ◽  
Related Factors ◽  
Mountain Plant ◽  
Forest District

Abstract The occurrence of mountain plant species in the Polish lowlands has been at the centre of attention of many botanists. In 2008-2011 we carried out field studies aimed at describing a new lowland population of White Twisted-stalk S. amplexifolius discovered in 2008. We focused on the following aims: to determine the current status of the lowland population of S. amplexifolius; to characterize phytocenoses and habitat conditions in which the species occur; to identify factors that can potentially pose a threat on the population and to propose guidelines for its protection. The newly discovered population is located in the Trójca Forest District (50º 38.737’ N; 18º 48.945’ E), forest department 61L. The main part of the population (ca. 70%) occupies an area of approximately 100 m2. Currently, to protect the population from grazing, the whole area (about 0.25 ha) has been surrounded by metal mesh fence. The population occurs within a poorly developed patch of Fraxino- Alnetum. It contains 107 branched and fruiting individuals of S. amplexifolius and 83 smaller plants (branchless and sporadically fruiting). The number of fruits per plant varies between 6 and 20. One fruit contains an average of 5 seeds (a maximum of 12 seeds and a minimum of 3 seeds per fruit). The occurrence of numerous Padus serotina seedlings and young plants is recorded within the site. Human-related factors have caused substantial changes in the water relations and, subsequently, also in the species composition of these plant communities. The population of S. amplexifolius within the described site seems to be in good condition and develops normally.

scholarly journals Distribution and habitat properties of Carex pulicaris and Pedicularis sylvatica at their range margin in NW Poland

2016 ◽  
Vol 85 (3) ◽  
Author(s):  
Zofia Sotek ◽  
Małgorzata Stasińska ◽  
Ryszard Malinowski ◽  
Edward Meller ◽  
Grzegorz Grzejszczak ◽  
...  
Keyword(s):  
Field Studies ◽  
Historical Records ◽  
Small Community ◽  
Habitat Conditions ◽  
Distribution Dynamics ◽  
Different Types ◽  
Habitat Properties ◽  
Caricion Davallianae ◽  
Nw Poland ◽  
Pedicularis Sylvatica

This paper presents the distribution dynamics, soil and phytocoenotical conditions of the occurrence of <em>Carex pulicaris</em> and <em>Pedicularis sylvatica</em> at the margin of their range in NW Poland. Dynamic cartograms of these species were made on the basis of our field studies and available contemporary and historical records. The studies showed that the plants grow on organic hemic-muck soils, mucky soils and typical muckous soils. The occurrence of these two species on different types of soils proves that they are able to adapt easily to varying habitat conditions of post-bog areas. Populations of <em>C. pulicaris</em> and <em>P. sylvatica</em> were most frequently not numerous and occurred in small community patches. Analyzed phytocoenoses with <em>C. pulicaris</em> have been classified as the community of the alliance <em>Caricion davallianae</em> or the alliance <em>Molinion</em>. Phytocoenoses with <em>P. sylvatica</em> are represented by the association <em>Nardo-Juncetum squarrosi</em> and the community of the class <em>Molinio-Arrhenatheretea</em>. The distribution dynamics of these species shows that they are disappearing from some parts of this region, which proves the recessive trends. This process is more intensive for <em>P. sylvatica</em>, which should be included in the red list of Polish plants like <em>C. pulicaris</em>. The disappearance of the populations of both species has been caused by worsening habitat conditions (insufficient moisture, eutrophication), expansion of competitive plant species and land abandonment.

scholarly journals Population structure of Liparis loeselii (L.) Rich. in relation to habitat conditions in the Warta River valley (Poland)

2016 ◽  
Vol 43 (1) ◽  
pp. 41-52 ◽  
Author(s):  
Agnieszka Błońska ◽  
Dariusz Halabowski ◽  
Agnieszka Sowa
Keyword(s):  
Population Structure ◽  
Plant Height ◽  
River Valley ◽  
Peat Bog ◽  
Habitat Conditions ◽  
Demographic Structure ◽  
Percentage Cover ◽  
Liparis Loeselii ◽  
S Poland

Abstract The paper presents results of a study on the population structure of the orchid Liparis loeselii growing in the Warta River valley peat bog in Myszków (Woźnicko-Wieluńska Upland, S. Poland). Individuals of L. loeselii occurred in patches of Menyantho trifoliatae-Sphagnetum teretis and Eleocharitetum pauciflorae – associations. The demographic structure of L. loeselii populations was described by variations in plant height, the length and width of leaves and the number of flowers of the constituting individuals. It was observed that habitat conditions such as conductivity, pH and the percentage cover of tall perennials had the strongest effect on the structure of L. loeselii populations.

Empty visual field studies: Some effects of corrective lenses, filters, and structure.

1964 ◽  
Author(s):  
Milton S. Katz ◽  
Paul A. Cirincione ◽  
William Metlay
Keyword(s):  
Visual Field ◽  
Field Studies

Vocal signaling among male northern elephant seals: Behavioral field studies of honesty vs. associative learning

2012 ◽  
Author(s):  
Colleen Reichmuth ◽  
Caroline Casey ◽  
Isabelle Charrier ◽  
Nicolas Mathevon ◽  
Brandon Southall
Keyword(s):  
Associative Learning ◽  
Field Studies ◽  
Elephant Seals ◽  
Northern Elephant Seals ◽  
Vocal Signaling

Penggunaan Media Pembelajaran Berbasis Android untuk Meningkatkan Hasil Belajar Kognitif Siswa

2019 ◽  
Vol 5 (2) ◽  
pp. 104-111
Author(s):  
Dian Puspita Eka Putri
Keyword(s):  
High School Students ◽  
Learning Outcomes ◽  
Multimedia Learning ◽  
Cognitive Learning ◽  
Field Studies ◽  
Research Subjects ◽  
School Students ◽  
Increase Student Achievement ◽  
Post Test ◽  
Test Result

This study aims to review  the effectiveness of using android-based multimedia learning  to improve achievement cognitive learning outcome of students. The research method is the analysis of field studies. The focus in this research is Multimedia which can influence cognitive learning outcomes of students. data obtained in this study from the literature and direct field observations. The research subjects were high school students in Yogyakarta. The result of analysis and discussion of research indicate that there is the influence of multimedia learning to increase student achievement, which is indicated by increasing post-test result  than before  not using multimedia learning. Posttest value is greater than pretest.

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