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Wyszukujesz frazę "tree diversity" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Zróżnicowanie florystyczne wybranych alei gmin: Namysłów, Świerczów oraz Domaszowice na Dolnym Śląsku
Floristic Diversity of Selected Tree Alleys in Lower Silesian Communes: Namysłów, Świerczów and Domaszowice
Autorzy:
Tomaszewska, K.
Bogdańska, A.
Powiązania:
https://bibliotekanauki.pl/articles/1188063.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
zróżnicowanie
flora
Dolny Śląsk
aleja
drzewo
floristic diversity
alley
tree
Lower Silesia
Opis:
One of the functions of roadside tree planting is biodiversity protection. The analysis often alleys from Lower Silesia region confirmed their floristic wealth. Nineteen tree species and five shrub species were recognized. Planted species forming alleys are predominant among sites was different, but two alleys attract an attention with their compositional arrangement: chestnut lane in Staroscin ended with a group of old, monumental oaks surrounding a historic figure, and two-part lane in Biestrzykowice. The cherry alley in Dąbrowa Namysłowska should be covered by a special care since there are less and less alleys of this type. Floristic diversity may be seen especially clearly in the case of roadside herbaceous plants. In all analysed sites 123 species of herbaceous plant belonging to 32 families were recognised. The number of individuals from particular families was varied. The most abundant were aster family (Asteraceae), blue grass family (Poaceae) and pea family (Fabaceae). High diversity is also confirmed by the fact that only two species were present in all ten alleys, while as much as 49% of species were observed once only. Among recognized species, the predominant are those characteristic for roadsides, however also another ones from neighbouring areas may be found. The alleys may also be a place of protected species occurrence bear's-garlic ( Allium ursinum) or ones characteristic for quite other kinds of sites triangle pink (Dianthus deltoides).
Źródło:
Architektura Krajobrazu; 2011, 1; 27-31
1641-5159
Pojawia się w:
Architektura Krajobrazu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odnowienie naturalne drzew w Puszczy Białowieskiej
Natural regeneration of trees in the Bialowieza Forest
Autorzy:
Brzeziecki, B.
Andrzejczyk, T.
Żybura, H.
Powiązania:
https://bibliotekanauki.pl/articles/985949.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Bialowieska
odnowienia naturalne
drzewa lesne
topola osika
Populus tremula
brzoza brodawkowata
Betula pendula
brzoza omszona
Betula pubescens
olsza czarna
Alnus glutinosa
sosna zwyczajna
Pinus sylvestris
dab szypulkowy
Quercus robur
jesion wyniosly
Fraxinus excelsior
klon pospolity
Acer platanoides
wiaz gorski
Ulmus glabra
swierk pospolity
Picea abies
lipa drobnolistna
Tilia cordata
grab pospolity
proces dorastania
ekosystemy lesne
dynamika lasu
active approach
deer browsing
long−term study
multifunctional forest management
natural recruitment
nature conservation
silvicultural treatment
strict protection
tree competition
tree diversity
Opis:
Since several years already, a massive infestation of bark beetle has taken place in the Białowieża Forest, decimating a local Norway spruce population. In consequence, many open areas appeared, practically deprived of trees and other forest vegetation. The existence of such areas has a very negative impact on multiple values of the Białowieża Forest: natural, social, economical and landscape−aesthetic values. The local forest administration prepared a strategy aimed at active restoration of diverse woodland communities typical for the Białowieża Forest in all places, where bark beetle infestation wiped up the spruce stands. Those plans were criticized by representatives of the environmental organizations who blamed the foresters for transforming the Białowieża Forest into ‘plantation’ and claiming that such measures are inconsistent with the existing forest management and protection plan. The postulate of environmentalists is that the recovery of woodland communities should proceed completely naturally. Taking into account the above mentioned controversies, in this paper we examine the issue of natural regeneration in the Białowieża Forest in detail. In particular, we try to determine to which extent this method of forest reproduction enables re−establishment of compositionally diverse woodland communities, distinguished by a high level of biological diversity and able to provide a wide range of commodities and benefits important for today’s society. Based on an extensive literature review we show that a combination of different (abiotic and biotic) factors, influencing establishment and subsequent growth of seedlings and saplings in the Białowieża Forest has long been strongly unfavorable for many tree species. In this regard, one should particularly emphasize the negative role of large herbivores, especially red deer, which is present in the Białowieża Forest since the end of 19th century, when it became a private hunting ground for Russian tzars. The devastating effect of deer browsing on natural regeneration is a well−documented phenomenon and widely recognized problem in the forestry practice. The fencing of young forest generation against game pressure is an indispensable measure, needed to secure the continuous existence of several tree species (first of all those palatable and vulnerable to browsing). Very strong arguments for an active approach to the described problem delivers also a long−term study on natural forest dynamics conducted since 1936. It shows that under conditions of strict protection the regeneration capacity of the Białowieża tree species is very variable. These differences lead to the compositional simplification and impoverishment of many tree stands, with numerous negative consequences for local biodiversity. We underline that an active management strategy is a basic prerequisite for maintaining a diverse character of the Białowieża stands and their ability to provide all important ecosystem services on a sustainable basis. Such a strategy should include, beside of the phase of establishment, also the subsequent developmental stages of new forest generations. The general goal of such a strategy should be to secure a possibly high diversity of tree composition and to enable the development of tree species representing a full range of life−history strategies and playing different successional roles: from typical pioneer species, through intermediate, to climax species.
Źródło:
Sylwan; 2018, 162, 11; 883-896
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zebra, Opowieści spod oliwnego drzewa i Bahar znaczy wiosna jako nowe propozycje lekturowe o wielokulturowości
The Zebra, Bahar Means Spring, Tales Under the Olive Tree – new possibilities of reading about multiculturalism
Autorzy:
Sadzikowska, Lucyna
Powiązania:
https://bibliotekanauki.pl/articles/511005.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
children’s and youth literature multiculturalism
diversity
respect for otherness
The Zebra
Bahar Means Spring
Tales Under the Olive Tree
multicultural education
Opis:
The article aims at presenting children’s and youth books published in 2013, 2014 and 2015 by the publishing house called ‘Poławiacze Pereł’. The author analyses the content of three short stories: The Zebra by Ifi Ude, Bahar Means Spring by Agnieszka Aysen Kaim and Tales Under the Olive Tree by Aida Amer. The article author presents her considerations on multiculturalism as a subject of Polish education. The students’ comprehension of ‘otherness’ may enable them to respect and accept the differences in race, appearance, religion, behaviour, culture, clothing and preferences.
Źródło:
Postscriptum Polonistyczne; 2018, 2 (22) Glottodydaktyka wśród dzieci i młodzieży wobec wyzwań wielo-, transkulturowości i ruchów migracyjnych; 225-238
1898-1593
2353-9844
Pojawia się w:
Postscriptum Polonistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany struktury genetycznej pomiędzy populacją rodzicielską a potomną w drzewostanie nasiennym sosny zwyczajnej (Pinus sylvestris L.)
Changes of genetic structure between parental and offspring populations in a seed stand of Scots pine [Pinus sylvestris L.]
Autorzy:
Dzialuk, A.
Burczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/1018561.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany nasienne
sosna zwyczajna
lesnictwo
zmiany struktury genetycznej
populacje rodzicielskie
populacje potomne
Pinus sylvestris
drzewa lesne
genetic diversity
genetic erosion
seed tree stand
scots pine
Opis:
Eight isozyme gene loci were used to compare genetic structure and variation of parental and offspring populations of Scots pine (Pinus sylvestris L.) in the seed tree stand located in the Woziwoda Forest District of the Tuchola Forest. Although, the estimated parameters indicate small reduction of heterozygosity in offspring populations, the stand may be considered as a valuable seed source for reforestation.
Źródło:
Sylwan; 2006, 150, 10; 30-38
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
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