Lake Eğirdir Under Global Climate Change and Local Pressures

Öz

This study offers a comprehensive bibliometric analysis of Lake Eğirdir—a vital freshwater resource in Turkey—by examining the impacts of global climate change and anthropogenic activities. It aims to address key questions about bibliometric trends in lake-related research, particularly concerning global warming and other human-driven factors. The analysis draws on the Web of Science (WoS) database and was visualized through VOSviewer software to uncover publication trends and thematic clusters related to Lake Eğirdir. The results reveal a significant increase in scholarly attention and publication volume on Lake Eğirdir, particularly after 2014. Although climate change is a major contributor, anthropogenic pressures—such as agricultural expansion, pesticide use, and deforestation—play an equally substantial role in the lake’s degradation. These findings highlight the need for sustained scientific monitoring and evidence-based policy actions to mitigate adverse impacts and safeguard Lake Eğirdir’s ecological and economic roles. Beyond illuminating the specific challenges confronting Lake Eğirdir, this study contributes to a broader understanding of how similar freshwater systems globally are impacted by the interplay of climatic and human-induced factors. The insights gained here are essential for formulating strategies aimed at ensuring the long-term sustainability and conservation of Lake Eğirdir amid ongoing environmental pressures.

Anahtar Kelimeler

• bibliometric analysis
• climate change
• Lake Eğirdir
• water balance
• VOSviewer

Küresel İklim Değişikliği ve Yerel Baskılar Altında Eğirdir Gölü

Öz

Bu çalışma, küresel iklim değişikliğinin ve antropojenik faaliyetlerin etkilerini inceleyerek Türkiye'deki hayati bir tatlı su kaynağı olan Eğirdir Gölü'nün kapsamlı bir bibliyometrik analizini sunmaktadır. Özellikle küresel ısınma ve diğer insan kaynaklı faktörlerle ilgili olarak gölle ilgili araştırmalardaki bibliyometrik eğilimler hakkında temel soruları ele almayı amaçlamaktadır. Analizde, Web of Science (WoS) veritabanından yararlanılmıştır ve Eğirdir Gölü ile ilgili yayın eğilimlerini ve tematik kümeleri ortaya çıkarmak için VOSviewer yazılımı aracılığıyla görselleştirilmiştir. Sonuçlar, özellikle 2014'ten sonra Eğirdir Gölü'ne yönelik akademik ilgi ve yayın hacminde önemli bir artış olduğunu ortaya koymaktadır. İklim değişikliği önemli bir katkıda bulunsa da, tarımsal genişleme, pestisit kullanımı ve ormansızlaşma gibi antropojenik baskılar da gölün bozulmasında eşit derecede önemli bir rol oynamaktadır. Bu bulgular, olumsuz etkileri azaltmak ve Eğirdir Gölü'nün ekolojik ve ekonomik rollerini korumak için sürdürülebilir bilimsel izleme ve kanıta dayalı politika eylemlerine olan ihtiyacı vurgulamaktadır. Eğirdir Gölü'nün karşı karşıya olduğu belirli zorlukları aydınlatmanın ötesinde, bu çalışma küresel olarak benzer tatlı su sistemlerinin iklimsel ve insan kaynaklı faktörlerin etkileşiminden nasıl etkilendiğine dair daha geniş bir anlayışa katkıda bulunmaktadır. Burada elde edilen içgörüler, devam eden çevresel baskılar arasında Eğirdir Gölü'nün uzun vadeli sürdürülebilirliğini ve korunmasını sağlamayı amaçlayan stratejiler formüle etmek için önemlidir.

Anahtar Kelimeler

• Bibliyometrik analiz
• iklim değişikliği
• Eğirdir Gölü
• su bütçesi
• VOSviewer

Kaynakça

1. Beyhan, M., Kacıkoc, M., (2014). Evaluation of water quality from the perspective of eutrophication in Lake Eğirdir, Turkey. Water, Air, & Soil Pollution, Vol. 225, pp. 1-13, 2014. https://doi.org/10.1007/s11270-014-1994-x
2. Carpenter, S.R., Stanley. E.H., Vander Zanden, M.J., (2011). State of the world's freshwater ecosystems: physical, chemical, and biological changes. Annual Review of Environment and Resources, Vol. 36 (1), pp. 75-99. https://doi.org/10.1146/annurev-environ-021810-094524
3. Ceylan, M., Cetinkaya, O., Uysal, R., Yegen, V., (2023). Medicinal leech habitats: important biodiversity hotspots for fish species conservation. Biodiversity and Conservation, Vol. 32(14), pp. 4719-4731. https://doi.org/10.1007/s10531-023-02722-8
4. De León, M. E., Fox, E. G., Dunaj, S., Jenner, R. A., Keiser, C. N., Macrander, J., ... & Colston, T. J. (2025). A review of the venom microbiome and its utility in ecology and evolution including future directions for emerging research. Symbiosis, 1-25.
5. Davraz, A., Sener, E., Sener, S., (2008). Temporal variations of fluoride concentration in Isparta public water system and health impact assessment (SW-Turkey). Environmental Geology, Vol. 56, pp. 159-170. https://doi.org/10.1007/s00254-007-1148-1
6. Davraz, A., Sener, E., Sener, S., Varol, S., (2014). Water Balance of the Eğirdir Lake and the Influence of Budget Components, Isparta, Turkey. Suleyman Demirel University Journal of Natural and Applied Science, Vol. 18(2), pp. 27-36.
7. Donthu, N., Kumar, S., Mukherjee, D., Pandey, N., Lim, W.M., (2021). How to conduct a bibliometric analysis: An overview and guidelines. Journal of Business Research, Vol. 133, pp. 285-296, 2021. https://doi.org/10.1016/j.jbusres.2021.04.070
8. Ghorbani, M.A., Deo, R.C., Khosrowshahi, V. K., Yaseen, Z.M., Terzi, O., (2018). Implementation of a hybrid MLP-FFA model for water level prediction of Lake Egirdir, Turkey. Stochastic Environmental Research and Risk Assessment, Vol. 32, pp. 1683–1697, 2018. https://doi.org/10.1007/s00477-017-1474-0

9. Governorship of Isparta. (2023). Eğirdir Gölü’nün Önemi ve Geleceği. Retrieved July 5, 2025, from http://www.isparta.gov.tr/21524
10. Guldal, V., Tongal, H., (2010). Comparison of Recurrent Neural Network, Adaptive Neuro-Fuzzy Inference System and Stochastic Models in Eğirdir Lake Level Forecasting. Water Resource Management, Vol. 24, pp. 105–128. https://doi.org/10.1007/s11269-009-9439-9
11. Gunes, K., (2008). Point and nonpoint sources of nutrients to lakes–ecotechnological measures and mitigation methodologies–case study. Ecological Engineering, Vol. 34(2), pp. 116-126. https://doi.org/10.1016/j.ecoleng.2008.07.004
12. Kacıkoç, M., Beyhan, M., (2014). Hydrodynamic and water quality modeling of Lake Eğirdir. CLEAN–Soil, Air, Water, Vol. 42(11), pp. 1573-1582, 2014. https://doi.org/10.1002/clen.201300455
13. Kaçıkoç, M., Mesta, B., Karaaslan, Y., (2025). Evaluating changes in water levels during periods of normal flow and drought with a specific emphasis on water withdrawal. Journal of Water and Climate Change, 16 (3): 1073–1097. https://doi.org/10.2166/wcc.2025.666.
14. Kazancı, N., Ekingen, P., Dügel, M., Turkmen G., (2015). Hirudinea (Annelida) species and their ecological preferences in some running waters and lakes. Int. J. Environ. Sci. Technol. 12, 1087–1096 (2015). https://doi.org/10.1007/s13762-014-0574-3
15. Keskin, M.E., Terzi, O., (2006). Evaporation estimation models for lake Eğirdir, Turkey. Hydrological Processes: An International Journal. Vol. 20(11), pp. 2381-2391. https://doi.org/10.1002/hyp.6049
16. Keskin, M.E., Terzi, O., (2006). Evaporation estimation models for lake Eğirdir, Turkey. Hydrological Processes: An International Journal, Vol. 20(11), pp. 2381-2391. https://doi.org/10.1002/hyp.6049
17. Keskin, M.E., Terzi, O., Kuçuksille, E.U., (2009). Data mining process for integrated evaporation model. Journal of Irrigation and Drainage Engineering. Vol. 135(1), pp. 39-43. https://doi.org/10.1061/(ASCE)0733-9437(2009)135:1(39)
18. Kisi, O., (2009). Neural network and wavelet conjunction model for modelling monthly level fluctuations in Turkey. Hydrol. Process. 23, 2081–2092. https://doi.org/10.1002/hyp.7340
19. Li, X., Nan, R., (2017). A bibliometric analysis of eutrophication literatures: an expanding and shifting focus. Environmental Science and Pollution Research, Vol. 24(20), pp. 17103-17115. https://doi.org/10.1007/s11356-017-9294-9
20. Liu, Z., Yang, Z., Chen, M., Xu, H., Yang, Y., Zhang, J., Wu, Q., Wang, M., Song, Z., Ding, F., (2023). Research hotspots and frontiers of mountain flood disaster: Bibliometric and visual analysis. Water, Vol. 15(4), pp. 673. https://doi.org/10.3390/w15040673
21. Mbao, E.O., Odinga, E.S., Nyika, J., Ochieng, B., Kitaka, N., (2022). A bibliometric study on the use of diatoms in water quality monitoring and bioassessment in Africa across 10-year (2012–2022) period. Aquatic Sciences, Vol. 84(4), pp. 58. https://doi.org/10.1007/s00027-022-00891-2
22. Sekercioglu, C.H., Anderson, S., Akcay, E., Bilgin, R., Can, O.E., Semiz, G., Tavsanoglu, C., Soyumert, A., Yokes, M.B., Ipekdal, K., Sağlam, I.K., Yucel, M., Dalfes, N., (2011). Turkey’s globally important biodiversity in crisis. Biological Conservation, Vol. 144(12), pp. 2752-2769, 2011. https://doi.org/10.1016/j.biocon.2011.06.025
23. Sener, E., (2021). Effects of global climate change on Lake Eğirdir Basin and drought analysis. PhD Thesis, Süleyman Demirel University, Isparta, Turkiye, 2021.
24. Sener, E., Davraz, A., (2013). Assessment of groundwater vulnerability based on a modified DRASTIC model, GIS and an analytic hierarchy process (AHP) method: the case of Egirdir Lake basin (Isparta, Turkey). Hydrogeology Journal, Vol. 21, pp. 701–714. https://doi.org/10.1007/s10040-012-0947-y
25. Sener, E., Davraz, A., (2024). Comparison of drought indices in the analysis of temporal and spatial changes of climatic drought events: a case study in the Egirdir Lake basin (Isparta/Turkey). Natural Hazards, Vol. 63(15–16), pp. 2005–2019. https://doi.org/10.1007/s11069-024-06711-0
26. Sener, E., Sener, S., Davraz, A., (2009). Assessment of aquifer vulnerability based on GIS and DRASTIC methods: a case study of the Senirkent-Uluborlu Basin (Isparta, Turkey). Hydrogeology Journal, Vol. 17, pp. 2023–2035. https://doi.org/10.1007/s10040-009-0497-0
27. Sener, S., Davraz, A. Karaguzel, R., (2013). Evaluating the anthropogenic and geologic impacts on water quality of the Eğirdir Lake, Turkey. Environmental Earth Sciences, Vol. 70, pp. 2527–2544, 2013. https://doi.org/10.1007/s12665-013-2296-0
28. Sener, S., Sener, E., Davraz, A., (2017). Assessment of groundwater quality and health risk in drinking water basin using GIS. Journal of Water and Health, Vol. 15(1), pp. 112-132. https://doi.org/10.2166/wh.2016.148
29. Song, A.M., Hickey, G.M., Temby, O., Krantzberg, G., (2016). Assessing transboundary scientific collaboration in the Great Lakes of North America. Journal of Great Lakes Research, Vol. 42(1), pp. 156-161, 2016. https://doi.org/10.1016/j.jglr.2015.10.014
30. Sibandze, P., Kalumba, A. M., H. Aljaddani, A., Zhou, L., & Afuye, G. A. (2025). Geospatial mapping and meteorological flood risk assessment: A global research trend analysis. Environmental Management, 75(1), 137-154.
31. Sonmez, N.K., Onur, I., Altunbas, S., (2015). Determining natural and cultural changes around wetlands by means of remote sensing techniques: A case study in Egirdir Lake. Fresenius Environmental Bulletin, Vol. 24(1A), pp. 244-249, 2015.
32. Soyaslan, I.I., Karaguzel, R., (2008). Investigation of water pollution in the Yalvac basin into Egirdir Lake, Turkey. Environmental Geology, Vol. 55, pp. 1263-1268, 2008. https://doi.org/10.1007/s00254-007-1074-2
33. van Eck, N.J., Waltman, L. Software survey: VOSviewer, a computer program for bibliometric mapping. Scientometrics 84, 523–538 (2010). https://doi.org/10.1007/s11192-009-0146-3
34. Wang, J., Zhang, S., Mu, X., Hu, X., Ma, Y., (2022). Research characteristics on cyanotoxins in inland water: insights from bibliometrics, Water, Vol. 14(4), pp. 667. https://doi.org/10.3390/w14040667
35. Wang, W., Wang, Z., (2022). Retrospecting the researches and efforts on Lancang-Mekong water issues: a bibliometric perspective. Water Policy, Vol. 24(12), pp. 1930-1950. https://doi.org/10.2166/wp.2022.170
36. Williams‐Subiza, E.A., Epele, L.B., (2021). Drivers of biodiversity loss in freshwater environments: A bibliometric analysis of the recent literature. Aquatic Conservation: Marine and Freshwater Ecosystems, Vol. 31(9), pp. 2469-2480. https://doi.org/10.1002/aqc.3627
37. Yan, J., Qu, Z., Li, F., Li, H., (2021). Heavy metals in the water environment of Yangtze River Economic Belt: Status, fuzzy environmental risk assessment and management. Urban Climate, Vol. 40, pp. 100981. https://doi.org/10.1016/j.uclim.2021.100981
38. Yao, J., Xu, N., Wang, M., Liu, T., Lu, H., Cao, Y., ... & Xu, H. (2025). SWOT satellite for global hydrological applications: Accuracy assessment and insights into surface water dynamics. International Journal of Digital Earth, 18(1), 2472924.
39. Yerel Iklim, (2024). Yerel Iklim Website. https://yereliklim.org/en/homepage/. (Accessed 28 May 2025)
40. Yilmaz, O.S., (2023). Spatiotemporal statistical analysis of water area changes with climatic variables using Google Earth Engine for Lakes Region in Türkiye. Environmental Monitoring and Assessment, Vol. 195(6), pp. 735, 2023. https://doi.org/10.1007/s10661-023-11327-1
41. Yucel, A., Markovic, M., Atilgan, A., Rolbiecki, R., Ertop, H., Jagosz, B., Ptatch, W., Łangowski, A., Jakubowski, T., (2022). Investigation of Annual Lake Water Levels and Water Volumes with Şen Innovation and Mann-Kendall Rank Correlation Trend Tests: Example of Lake Eğirdir, Turkey. Water, Vol. 14(15), pp. 2374, 2022. https://doi.org/10.3390/w14152374
42. Zhang, Y., Zou, C., Peng, C., Lan, X., Zhang, H., (2023). Geophysics in Antarctic Research: A Bibliometric Analysis. Remote Sensing, Vol. 15(16), pp. 3928. https://doi.org/10.3390/rs15163928