Insect Types that May Affect Tree Species
ın the Botanical Gardens ın Future Years

Kaya.N.Ö¹           Özkaya.S.M¹              Aksu.Y¹

¹Forestry department directorate-Artvin

Abstract

Although Dendroctonus micans, Ips typographus, Ips sexdentatus, Pityokteines curvidens and Cryphalus picea  that making significantly damages, disrupting the ecological balance and causing economic losses in Picea, Abies and Pinus forestes located around of the Botanical Garden of Batum City in Republic of Georgia in the past years  become the border of ecological balance today, these insects may affect the health of species of coniferous tree in Botanical Garden all the time in the future. D. micans has damaged in Picea forestes of Georgia for many years and ıt has endangered the future of the presence of Picea. Against to this bark insect, Rhizophagus grandis has been produced in laboratory conditions and it has been placed in the field that insect damaged. Dispet of  reprovision of distrupted ecological balance as a result of this biological struggle, the trees that weakened by D. micans has become an ideal environment where Ips specieses can easily proliferate.  Ips typographus which both continuing the development in fields that D. micans has damaged and being the most dangerous bark insect of world continues to damage Picea forests as of today. Biotechnical struggle works are being continued against to this insect. Biotechnical struggle has been made against to Ips typographus in Artvin Picea forestes since 1997. Biological struggle has been made since 2006. Ips typographus caused the death of one million m³ Picea trees in between 2001-2004. D. micans caused the death of 350,000 m³ Picea forestes in Artvin in between 1972-1997. Against to D. micans in laboratory  conditions,  3.650.175 R.grandis were produced in between 1985-2012. These produced insects were used in biological struggle. Thus ecological balance was provided. In struggle with Ips typographus, 136.422 pheromone traps were hanged in fields that being intensive insect harm in between 1998-2012. 386.343.053 Ips typographus were catched and were destroyed. 46.421 Thanasimus formicarius were produced in laboratory contitions in between 2006-2012 and  biological struggle has been continued. Ecological balance has been provided in the vast majority of our fields against to Ips typographus. Ips typographus caused the death of more than 750,000 m³ Picea trees in Hatila Valley National Park Area. 34430 Rhizophagus depressus were produced with biotechnical struggle in laboratory conditions in between 2007-2012 and thus biological struggle has been made. Against to P. curvidens ve C. Picea that continuing the existence in the Batumi Abies forestes and which is below the level of harm for now, precautions should be taken in advance. Against to the bark insectes that continuing the existence in the Batumi Abies, Pinus, Picea forestes and which is above the level of harm, pheromone traps should be hanged to control every year. Furthermore, density determination needs to be done. Biotechnical and biological struggles need to be done against to species that above the level of harm. The bark insectes make more harm in the protected areas and national parks. The protection precautions should be maximized for the species can continue their existence in the Botanical Garden in long years. This is very important for the future of Botanical Garden.

Yayın yeri: 63- Kaya, N,Ö.; Özkaya,S,M.; Aksu,Y.; “The Role of Botanical Gardens in Conservation of Plant Diversity” Proceedings of the Anniversary International Scientific Practical Conference to 100 year Anniversary of Batumi Botanical Garden, 8-10 May, 2013 Batumi, Georgia , Cilt 2, Sayfa 168