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LİKENLERİN KAYA PARÇALANMASI VE AYRIŞMASINDAKİ İŞLEVLERİ

FUNCTIONS OF LICHENS ON DISINTEGRATION AND WEATHERING OF ROCKS

Journal Name:

  • İstanbul Üniversitesi Orman Fakültesi Dergisi

Publication Year:

  • 2005

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Lichens are the effective agencies on disintegration and weathering processes of rocks. These effects mainly depend on the kind of rocks and site characteristics. The steps of the disintegration process is; 1) penetration hyphae of lichens into the rocks 2) expansion and contraction of lichen thallus 3) freezing and thaving of lichen thallus 4) incorporation of mineral fragments into lichen thallus. Weathering process also goes on together with all these disintegration effects, and include two steps. First step is C02 emission by respiration of lichens, lichen acids and other lichen compounds change the rock structure. Second step is; lichens constitute new compounds on their own bodies or contact points on rock accompanied by changed structure, and lichens use the minerals of rock in this step.
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Abstract (Original Language): 
Likenler kayaların parçalanması ve ayrışması süreçlerine etkili bir şekilde katılmaktadırlar. Bu etki, likenin ve etkilediği kayanın türü ile bunların bulunduğu ortama göre değişmektedir. Likenlerin kayaları parçalayıcı etkileri; 1) liken hüflerinin kayanın içine girmesi 2) Likenin büzülmesi ve genişlemesi, 3) Likenin donması ve çözülmesi, 4) Likenlerin mineralleri sarması şeklinde olur. Tüm bu parçalayıcı etkilerle ayrışma süreçleri beraber işler. Ayrışma süreci iki aşamadadır. Birinci aşamada; likenlerin solunum yoluyla ortama verdikleri C02, liken asitleri ve diğer bileşiklerle ortamın yapısı değiştirilir. İkinci aşamada ise; değişen bu yapıyla birlikte likenler bünyelerinde veya kayayla temas ettiği yerde kayalardaki mineralleri de kullanarak yeni bileşikler oluştururlar.
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  • 2
75-83
  • Turkish

REFERENCES

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