| Yazarlar |
Prof. Dr. Erol AKKUZU
Kastamonu Üniversitesi |
S. Guner
|
| Özet |
| A study concerning the effects of elevation and exposure of the spruce forests on defoliation levels of oriental spruce (Picea orientalis (L.) Link.) by lps typographus L. was carried out during 2005 and 2006 in Artvin-Hatila National Park, Turkey. Nine spruce stands were selected at 3 zones of elevations (1000-1350 m, 1350-1700 m and 1700-2000 m) and at different aspects to assess the role of elevation and exposure in the crown defoliation level and body length of beetles. Influence of bark thickness and trunk diameter at 1.3 m on the damage caused by the pest was investigated as well. The results of the study were as follows: (1) The mean defoliation level was highest at 1700-2000 m following by 1350-1700 m and 1000-1350 m. (2) The highest defoliation levels occurred on southern slopes following by eastern and northern slopes at 1700-2000 m. (3) No statistical differences were found in the mean bark thickness between tree defoliation levels 1, 2, 3 and 4. (4) Mean trunk diameters of dead trees (level 4) were significantly greater than those with defoliation levels 0, 1 and 2. (5) Mean body length of I. typographus at upper zones was significantly higher than those at middle and lower zones. © Triveni Enterprises. |
| Anahtar Kelimeler |
| Defoliation | Elevation | Exposure | lps typographus (L.) | Picea orientalis (L.) |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | ESCI dergilerinde yayımlanan tam makale |
| Dergi Adı | JOURNAL OF ENVIRONMENTAL BIOLOGY |
| Dergi ISSN | 0254-8704 |
| Makale Dili | İngilizce |
| Basım Tarihi | 03-2008 |
| Cilt No | 29 |
| Sayı | 2 |
| Sayfalar | 223 / 226 |
