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Wyświetlanie 1-3 z 3
Tytuł:
Ekologiczne uwarunkowania występowania bluszczu pospolitego (Hedera helix L.)
Ecological determinants of the occurrence of Hedera helix L.
Autorzy:
Koziarz, M.
Powiązania:
https://bibliotekanauki.pl/articles/973523.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
bluszcz pospolity
Hedera helix
rozmieszczenie geograficzne
uwarunkowania klimatyczne
uwarunkowania ekologiczne
pnącza
pochodzenie roślin
ekologia roślin
rozwój roślin
występowanie
uwarunkowania środowiskowe
ivy
ecology
habitat requirements
host trees
Opis:
Ivy (Hedera helix L.) is the only native evergreen climber and exclusive representative of Araliaceae in Poland's flora. It occurs in all forests across Poland, mainly in the western and the southern part of the country. It is a shade−tolerant species, preferring mild climate as well as moist and fertile soils. In favourable conditions ivy climbs up the various supports, and it blooms when it has sufficient access to the light. The study synthesises dispersed information on the ivy ecology and identifies areas for further research. The occurrence of ivy is determined mainly by environmental conditions. Plantings and uncontrolled penetration into the forest environment plays also an important role in this species spread. Gaps, which have arisen in the stand, increase the chances of intensive growth of ivy population. The possibility of colonization of this species is limited mainly to secondary forests. Most studies suggest that ivy is influenced, indifferently or preferably, on tree support, provided that they are not weak. There are some disturbances such as storms or timber harvest that can contribute to the creation of favourable conditions for the mass colonization of forest habitats by ivy. The data concerning dynamics of ivy growth comes from research conducted in the Rhine valley and the Mediterranean region i.e. areas which have the most favourable conditions for the development of the species. Such research have not been carried out in the Central and Eastern Europe, where less favourable conditions for the development of ivy occur.
Źródło:
Sylwan; 2015, 159, 02; 168-176
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endofity bakteryjne drzew leśnych - stan wiedzy i sposoby wykorzystania
Endophytic bacteria of the forest trees - state of the art and possible applications
Autorzy:
Siebyła, M.
Szyp-Borowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/979123.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
endophytic bacteria
forest trees
host plant
symbiosis
Opis:
The interaction of endophytic microorganisms with plants are a common occurrence that brings mutual benefits to partners. Plants are the main habitat of bacteria that live inside their tissues and do not cause disease symptoms, but affect the growth and development of plants by producing substances that promote their development. Research on the diversity of endophytic bacteria associated with forest trees is insufficient – little is known about the diversity of endophytic bacteria, and especially their function in tree tissues. Bacteria positively affecting the host tree, among others, increase biomass growth by supporting tree health. The species diversity of endophytic bacteria in plants is influenced by the plant genotype, tissue type, development phase and environmental conditions. So far, bacteria that develop in root, stem, and leaf tissues have been best known. Among the forest trees in which the occurrence and diversity of endophytic bacteria have been studied, there are species such as pine, spruce, birch and oak. The presented paper is a review of the latest literature on the subject.
Źródło:
Sylwan; 2020, 164, 06; 497-504
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanizm zasiedlania drzew przez kornikowate
Autorzy:
Jonkisz, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/1019683.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zasiedlanie
szkodniki roslin
kornikowate
Scolytidae
entomologia lesna
lesnictwo
bark beetle
host plant chemical
pheromone
process of infesting trees
Opis:
Bark beetles (order Coleoptera, family Scolitydae) comprise a taxonomic group of species that look similar although they differ widely in their ecology and biochemical adaptations to host tees. This diversity of bark beetle biology in which each species is adapted to only one or a few host species, has probably resulted from natural selection due to the great variety of trees and their biochemicals. It also is likely that each species of tree has coevolved various chemicals to defend against the herbivorous selection pressures of bark beetles and other insects. Host plant chemicals can be attractive, repellent, toxic or nutritious to bark beetles and have effects on: (1) finding and accepting the host tree (host selection and suitability), (2) feeding stimulation and deterrence, (3) host resistance, (4) pheromone/allomone biosynthesis and communication, and (5) attraction of predators, parasites and competitors of bark beetles. There are two theories on how bark beetles find suitable host trees. The first is that they locate such trees by orienting over several metres to volatile chemicals usually released by damaged or diseased trees (called "primary attraction"). The second theory is that beetles fly about and encounter suitable host trees at random, whereupon they land and test them by short−range olfaction or gestation.
Źródło:
Sylwan; 2005, 149, 07; 57-60
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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