Keleş, Ahmet FarukAkçalı, AyşenurAlagözlü, BegümKaraytuğ, DenizEliçelik, Mert Ali2020-12-032020-12-032020http://hdl.handle.net/11693/54744Ankara : İhsan Doğramacı Bilkent Üniversitesi İktisadi, İdari ve Sosyal Bilimler Fakültesi, Tarih Bölümü, 2020.This work is a student project of the Department of History, Faculty of Economics, Administrative and Social Sciences, İhsan Doğramacı Bilkent University.The History of Turkey course (HIST200) is a requirement for all Bilkent undergraduates. It is designed to encourage students to work in groups on projects concerning any topic of their choice that relates to the history of Turkey. It is designed as an interactive course with an emphasis on research and the objective of investigating events, chronologically short historical periods, as well as historic representations. Students from all departments prepare and present final projects for examination by a committee, with 10 projects chosen to receive awards.Includes bibliographical references (pages 15-17).Bu makale, Havran Ovası'ndaki zeytin yetiştiriciliğini bu bölgedeki zeytinin kalitesinin zamanla neden değiştiğini anlatmaktadır. Zeytin ağaçlarının yetiştirildiği bölgelerde, bu ağaçlara zeytin sinekleri gelir ve bu sinekler zeytine zarar verir. Çiftçiler de zeytin sineklerinden zeytinleri korumak için ilaçlama yaparlar. Fakat, Havran Ovası'nda yaşayan yarasa kolonisi bu zeytin sinekleri ile beslenerek bölgede ilaçsız tarıma olanak sağlar. Yarasalar, zeytinciliği olumlu etkilemelerine rağmen su kıtlığı sebebiyle ihtiyaç duyulan barajın yapımıyla birlikte bulundukları mağaralardan taşınmak zorunda bırakıldı. Bu nedenle, bir kısmı yeni mağaralara alışamadı, öldü ya da göç etti. Yarasa popülasyonunun sayıca azalmasından dolayı zeytin ağaçları sineklendi ve ilaçlı tarıma başlandı. Bu yüzden, zeytinin kalitesi bozulmaya başladı.In this article, the reason why the quality of olives in Havran region had diminished over time is explained. In the olive farms, the olive fruit flies (Bactrocera oleae) infest these trees and damage the olives. Therefore, farmers use pesticides in order to protect and preserve the olives. However, the bat colonies in the Havran plain, eats these flies and therefore, enables chemicalfree agriculture. Although the bat colony had a positive effect on the ongoing olive cultivation, they were forced to move out of their habitat due to the construction of Havran dam. Some of the bats were not able to adapt to this new environment and therefore, they either died or migrated. The bat population decreased and consequently, the olive trees were infested by the fruit flies; therefore chemicals came into use in agriculture. Hence, the quality of the olives has started to deteriorate.25 pagesTurkishCreative Commons Attribution-NonCommercial-ShareAlikehttp://creativecommons.org/licenses/by-nc-sa/4.0/HavranZeytinZeytin sineğiYarasaBarajOliveOlive fruit flyBatWater reservoirÖZER HIST 200-1/2 2019-20Student ProjectSPB3198