Effect of the pest Marchalina hellenica Gennadius (Homoptera, Margarodidae) on the growth parameters of Pinus brutia Ten. in Muğla Region (Turkey)

• Autorzy: Yeşil A. , Gürkan B. , Saraçoğlu Ö. , Zengin H.
• Języki publikacji: EN

Abstrakty

EN

Marchalina hellenica Gennadius is a common pest prevalent in Pinus brutia Ten. forests in Muğla province of Mediterranean Region of Turkey (28°20'03'' E; 37°12'18'' N). The pest is known to suck sap from a number of pine tree species, especially Pinus brutia. The goal of this research is to determine whether the pest has a negative effect on the volume increments of Pinus brutia trees and forests. Two areas with identical site conditions are selected for study: one non-infested and one infested with Marchalina hellenica. The effects of site quality and age on the sampled trees have been eliminated. The diameter growth at breast height, basal area (the cross-sectional area of a tree at breast height) and the increment of tree volume are determined separately for both study areas. A t-test applied to volume increments of both infested and non-infested trees of all ages proves that infestation causes significant negative impacts on trees between the ages of 40 and 80 years. The greatest loss of increment in single trees is 2.0% (of the volume of non-infested tree) which occurs at the age of 70 years old. When considering the entire stand, the greatest loss of increment is 3.4% (of the volume of non-infested stand) which occurs at the age of approximately 45 years.

Słowa kluczowe

EN

Marchalina hellenica Gennadius; Pinus brutia Ten.; tree growth; volume increment

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2005
• Tom: Vol. 53, nr 3
• Strony: 451--458
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Yeşil A.

• Istanbul University, Faculty of Forestry, Department of Forest Management Planning 80895 Bahçeköy-Istanbul, Turkey

autor

Gürkan B.

• Hacettepe University, Faculty of Science, Department of Biology 06532 Beytepe-Ankara, Turkey

autor

Saraçoğlu Ö.

• Istanbul University, Faculty of Forestry, Department of Forest Yields and Biometry 80895 Bahçeköy-Istanbul, Turkey

autor

Zengin H.

• Abant Izzet Baysal University, Faculty of Forestry Department of Forest Management Planning, 81623 Konuralp-Düzce, Turkey

Bibliografia

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