Multivariate analysis of watershed health and sustainability in Turkey

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dc.authoridEvrendilek, Fatih/0000-0003-1099-4363
dc.contributor.authorOdemis, Berkant
dc.contributor.authorEvrendilek, Fatih
dc.date.accessioned2024-09-18T20:16:39Z
dc.date.available2024-09-18T20:16:39Z
dc.date.issued2008
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractNational hydrological network data between 1970 and 2002 for 96 stations across 25 watersheds were used to monitor annual trends in 13 variables: streamflow rates, water temperature, pH, electrical conductivity (EC), sediment concentration and eight nutrient levels (Na, K, Ca+Mg, CO3, HCO3, Cl, SO4 and boron). The dataset was analysed with multiple linear regression (MLR) models, principal components analysis (PCA) and hierarchical cluster analysis (CA). The Turkish watersheds have experienced a significant increase in pH, K, CO3 and a significant decrease in streamflow rate and sediment concentration between 1970 and 2002, with considerable spatial variations. There was also an increasing trend in streamwater temperature, at a rate of 0.05 degrees C yr(-1) (p > 0.05). The MLR models had high r(2) values of 69.6% to 99.9% at p <= 0.001 for 12 out of the 13 variables, with r(2) of 42% for boron (p < 0.05). PCA reduced the dimensionality of the dataset to four principal components that explain most (81.7%) of the variance. CA was able to distinguish six geographically associated groupings of watersheds with similar attributes in concordance with the climate zones of Turkey, despite the use of different clustering methods (complete, McQuitty, average, centroid and single linkage methods). Multivariate analyses of dynamic watershed characteristics provide the basis on which preventive and mitigative measures can be tailored to secure and enhance watershed health and sustainability.en_US
dc.identifier.doi10.3843/SusDev.15.3:9
dc.identifier.endpage272en_US
dc.identifier.issn1350-4509
dc.identifier.issn1745-2627
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-47549089856en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage265en_US
dc.identifier.urihttps://doi.org/10.3843/SusDev.15.3:9
dc.identifier.urihttps://hdl.handle.net/20.500.12483/9664
dc.identifier.volume15en_US
dc.identifier.wosWOS:000257579600009en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Incen_US
dc.relation.ispartofInternational Journal of Sustainable Development and World Ecologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectecosystem healthen_US
dc.subjectenvironmental degradationen_US
dc.subjectmultivariate statisticsen_US
dc.subjectwatershed sustainabilityen_US
dc.subjectwatershed managementen_US
dc.titleMultivariate analysis of watershed health and sustainability in Turkeyen_US
dc.typeArticleen_US

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