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Wyszukujesz frazę "chorology" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Chorology of Juniperus thurifera (Cupressaceae) in Morocco
Autorzy:
Romo, A
Boratynski, A.
Powiązania:
https://bibliotekanauki.pl/articles/41020.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Morocco
plant geography
plant ecology
Juniperus thurifera ssp.africana
geographic distribution
occurrence condition
wood exploitation
Opis:
The geographic distribution and occurrence conditions of Juniperus thurifera subsp. africana in Morocco were studied. The literature and herbaria data, together with field observations formed the basis of detailed maps of distribution of the species in the Middle and High Atlas and allow us to analyze its vertical distribution. The taxon occurs in the sub-arid and arid zones of the Middle and High Atlas with a separate population in the Anti-Atlas, mostly between altitudes 2000 and 2700 m, with an altitudinal maximum at 3400 m and a minimum at 1700 m. It forms forests in the area of about 30 000 ha. In many places of the High Atlas it is the only wood source for local populations. It is strongly endangered because of over exploitation of the wood, over pasturing and lack of seedlings and young specimens.
Źródło:
Dendrobiology; 2005, 54; 41-50
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chorological and synanthropodynamical analysis of trees and shrubs of the Stołowe Mts. (Middle Sudety)
Autorzy:
Swierkosz, K
Boratynski, A.
Powiązania:
https://bibliotekanauki.pl/articles/41383.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Silesian region
Stolowe Mountains
biodiversity
plant protection
tree
flora
chorology
shrub
Opis:
The 153 taxa of trees and shrubs were reported from the Stołowe Mts. Two species (Betula nana and Erica tetralix) were reported probably by mistake,and 7 are now extinct (Arctostaphylos uva-ursi, Chamaecytisus ratisbonensis, Genista pilosa, Lembotropis nigricans, Rosa agrestis, Salix lapponum, Salix myrtilloides). The other 144 taxa of trees and shrubs were found in the natural and semi-natural site conditions. The 110 native taxa and 34 anthropophytes are forming the contemporary woody flora. The 44 native taxa belong to various local red data book categories (including extinct),the 63 are not endangered and next 10 are apophytes. A few altitudinal groups of species can be distinguished,which are characterized with specific reaction to the growth of the altitude of localities. The distinct limit in the altitudinal ranges of the woody species occur at elevation of 580-600 m. This altitude was considered as the limit between submontane and montane belts in the Stołowe mountains.
Źródło:
Dendrobiology; 2002, 48
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pinus mugo Turra (Pinaceae) in the Ukrainian Carpathians
Autorzy:
Tsaryk, I
Didukh, Y.P.
Tasenkevich, L.
Waldon, B.
Boratynski, A.
Powiązania:
https://bibliotekanauki.pl/articles/41214.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Carpathians Mountains
Ukraine
chorology
plant geography
mountain
plant-exposure interaction
plant elevation interaction
Pinus mugo
Pinaceae
Pinetum mugo association
Opis:
Pinus mugo occurs only in the highest mountain chains of the Ukrainian East Carpathians. The largest part of the species area covers the Chornokhora ridge and the highest ridges of the Gorgany. In the other mountains of Ukraine it does not form thicket on so large terrains. Vertically, most of localities are placed at an elevation between 1400 and 1900 m, with maximum at 2010 m in the Chornokhora and with minimum about 700–800 m. The latter stands were reported from the peat bogs, however, the most of them have been destroyed and do not exist now. The dwarf mountain pine forms the community of Pinetum mugo, formed exclusively on the substrata not containing calcium dioxide. The species is connected with northern exposures. The area of distribution of Pinus mugo has been strongly reduced during centuries and association Pinetum mugo transformed into pastures.
Źródło:
Dendrobiology; 2006, 55; 39-49
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chorological and conservation status of the endemic cypress, Cupressus atlantica Gaussen, in the High Atlas (Morocco)
Autorzy:
Sekiewicz, K.
Sekiewicz, M.
Romo, A.
Didukh, Y.
Fennane, M.
Boratynski, A.
Powiązania:
https://bibliotekanauki.pl/articles/41144.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
chorology
conservation status
endemic plant
cypress
Cupressus atlantica
Cupressaceae
forest ecosystem
degraded ecosystem
High Atlas Mountains
plant conservation
plant geography
Morocco
Opis:
We present a study of the distribution, ecology and conservation status of Cupressus atlantica, an endemic tree of the High Atlas (Morocco). The main populations of this species grow in a reduced area along the N’Fiss valley in the Central High Atlas and are gradually receding. Particular populations are increasingly fragmented and the total area covered by the cypress woodland has decreased to less than a third of the surface occupied in the 1930s. Overgrazing reduces the woodlands’ regenerative capacity, and the exploitation of the wood, linked to traditional uses by the rural society of the N’Fiss valley, directly reduces the number of trees. Great efforts being made to protect the species by the Haut Commissariat aux Eaux et Forêts are having some effect in recent years.
Źródło:
Dendrobiology; 2014, 71
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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