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A study of the Yesilirmak River catchment in Northern Turkey: spatial patterns and temporal trends in water quality

Jin, Li, Whitehead, Paul and Hadjikakou, Michalis 2013, A study of the Yesilirmak River catchment in Northern Turkey: spatial patterns and temporal trends in water quality, Journal of environmental protection, vol. 04, no. 07, pp. 104-120, doi: 10.4236/jep.2013.47A013.

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Title A study of the Yesilirmak River catchment in Northern Turkey: spatial patterns and temporal trends in water quality
Author(s) Jin, Li
Whitehead, Paul
Hadjikakou, MichalisORCID iD for Hadjikakou, Michalis orcid.org/0000-0002-3667-3982
Journal name Journal of environmental protection
Volume number 04
Issue number 07
Start page 104
End page 120
Total pages 17
Publisher Scientific Research Publishing
Place of publication Irvine, Calif.
Publication date 2013
ISSN 2152-2197
2152-2219
Keyword(s) nutrients
nitrate
orthophosphate
agriculture
wastewater
waste water treatment plants
Summary This paper presents a comprehensive study of spatial and temporal patterns of water chemistry (1995-2008) in the YesilirmakRiver catchment in Northern Turkey. Biological oxygen demand (BOD), dissolved oxygen (DO) and nutrientconcentrations (nitrogen and phosphorus) are variable across the catchment because the upland areas are relatively undisturbed,and the lower catchment is dominated by urban, industrial and agricultural inputs. Seasonally, high nutrientconcentrations occur in winter possibly due to flushing from the soil zone. Low summer flow and reduced dilution leadto high orthophosphate concentrations. However, denitrification seems to be more significant than dilution processesand this generates low nitrate concentrations in summer. Nutrient levels since 1995 do not show a significant upwardtrend. The current water quality status indicates that the river system is in poor condition. The majority of sites fall inthe Turkish water classification class II-III and more than half fail the EU standards because of high nutrient concentrations.In order to improve the status of water quality to achieve good chemical and ecological status, there is clearly aneed to improve pollution control within the river system by installing waste water treatment plants, while keeping theagricultural pollution to a minimum in the system.
Language eng
DOI 10.4236/jep.2013.47A013
Field of Research 070108 Sustainable Agricultural Development
070102 Agricultural Land Planning
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2013, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30102927

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.