Forest Declie Evidence in Southern Turkey and its possible dependence on ozone trends

Güllü, Gülen
Şirin, Gürel
Tuncel, Süleyman Gürdal
During the period between 1991 and 1997, crown condition was monitored at an experimental forest located in Southern Turkey, near Antalya. In order to determine the nutritional status of the stands in the study area, in the years 1992, 1993 and 1998, young and old needles were collected from the labelled trees and nutrient contents (N, P, K, Ca, Mg) of the needles were determined. Between the years 1991 and 1997, the degree of defoliation of the canopies, according to the damage indexes, changes from 10–25% to 25–60%. Between the years 1992 and 1998, examination of nutrition condition of the stands reveal that, sufficient and balanced nutrition status of the trees in the year 1992, becomes insufficient or unbalanced for P, K, and N in 1998.From October 1994 to January 1996, a continuous hourly ozone sampling was performed on the Mediterranean coast of Turkey (30.34°E, 36.47°N) near Antalya. The survey carried out in the summer of 1995 reveals that AOT40f index is 14.612 ppm.h, which exceeds the critical level of 10 ppm.h. As the measured ambient ozone levels are higher than critical level, it has been proposed that ozone may be one of the anthropogenic stress factors causing the forest decline in Southern Turkey observed within this study.
Water Air and Soil Pollution


Atmospheric nutrient inputs to the northern levantine basin from a long-term observation: sources and comparison with riverine inputs
Koçak, Mustafa; TUĞRUL, SÜLEYMAN; Mihalopoulos, N (2010-01-01)
Aerosol and rainwater samples have been collected at a rural site located on the coastline of the Eastern Mediterranean, Erdemli, Turkey between January 1999 and December 2007. Riverine sampling was carried out at five Rivers (Ceyhan, Seyhan, Goksu, Berdan and Lamas) draining into the Northeastern Levantine Basin (NLB) between March 2002 and July 2007. Samples have been analyzed for macronutrients of phosphate, silicate, nitrate and ammonium (PO43-, Sidiss, NO3- and NH4+). Phosphate and silicate in aerosol ...
Chemical characteristics of atmospheric aerosols in a rural site of northwestern Anatolia
Yenisoy-Karakas, S; Tuncel, Süleyman Gürdal (1997-09-01)
Aerosol samples were collected daily at a rural mountainous site of northwestern Anatolia during September 1993-April 1994. Concentrations of SO42-, NO3-, Cl-, NH4+, Na+, K+, Ca2+ and Mg2+ have been determined. Sulfate made up the 30% analyzed aerosol mass with a 2.14 mu gm(-3) average concentration. Measured concentrations were comparable with other rural area data except Ca2+ which was higher in our station with an average concentration of 1.12 mu gm(-3). Monthly concentrations of major ions fluctuate dep...
Investigation of short and long term trends in the eastern mediterranean aerosol composition
Öztürk, Fatma; Tuncel, Süleyman Gürdal; Department of Environmental Engineering (2009)
Approximately 2000 daily aerosol samples were collected at Antalya (30°3430.54” E, 36°47’30.54”N) on the Mediterranean coast of Turkey between 1993 and 2001. High volume PM10 sampler was used for the collection of samples on Whatman41 filters. Collected samples were analyzed by a combination of analytical techniques. Energy Dispersive X-Ray Fluorescence (EDXRF) and Inductively Coupled Plasma Mass Spectrometry (ICPMS) was used to measure trace element content of the collected samples from Li to U. Major ions...
Ozone concentrations at a rural mountain site of northwestern Turkey
Ozer, U; Tuncel, Süleyman Gürdal (1996-03-29)
Average ozone concentrations at a remote site in the Uludag Mountain of Northwestern Turkey was 29 ppb for a 12 month period. Only 11% of the time 1-h average values exceed 50 ppb. The US Air Quality Standard of 0.12 ppm was not exceeded. The diurnal variations of O3 and NO2 were 27 and 2.3 ppb respectively, during summer 1993, indicating the impact of urban and industrial sources. Highest O3 concentrations were observed under southerly and northerly winds, suggestive of the transport of photochemically pro...
Concentration and chemical composition of PM2.5 and PM10-2.5 in the Northeastern Mediterranean
Kubilay, Nilguen; Koçak, Mustafa; Mihalopoulos, Nikos (2006-09-01)
Two stage aerosol samples (PM10-2.5 and PM2.5) were collected at a rural site (Erdemli) located on the coast of the Northeastern Mediterranean, between April 2001 and April 2002. A total of 581 aerosol samples were analysed for trace elements (Fe, Ti, Mn, Ca, V, Ni, Zn, Cr) and water soluble ions (Na+, NH4+, K+, Mg2+, Ca2+, Cl-, Br-, NO3-, SO42-, C2O42- and MS-). The annual mean PM10 and PM2.5 levels were 36.4 +/- 27.8 mu g m(-3) and 9.7 +/- 5.9, respectively. The highest levels of PM10 were observed during...
Citation Formats
G. Güllü, G. Şirin, and S. G. Tuncel, “Forest Declie Evidence in Southern Turkey and its possible dependence on ozone trends,” Water Air and Soil Pollution, pp. 175–192, 2003, Accessed: 00, 2021. [Online]. Available: