Characterisation of spatial variability in water quality in the Great Barrier Reef catchments using multivariate statistical analysis

MARINE POLLUTION BULLETIN

卷:137

Article

Liu, S.¹  Ryu, D.¹  Webb, J. A.¹  Lintern, A.^1,2  Waters, D.³  Guo, D.¹  Western, A. W.¹ 

[1] Univ Melbourne, Dept Infrastruct Engn, Parkville, Vic 3010, Australia

[2] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

[3] Queensland Dept Nat Resources Mines & Energy, Toowoomba, Qld 4350, Australia

关键词: Water quality;    Great Barrier Reef catchments;    Multivariate analysis;    Catchment characteristics;    Land use;   

DOI  :  10.1016/j.marpolbul.2018.10.019

来源: Elsevier

【 摘 要 】

Water quality monitoring is important to assess changes in inland and coastal water quality. The focus of this study was to improve understanding of the spatial component of spatial-temporal water quality dynamics, particularly the spatial variability in water quality and the association between this spatial variability and catchment characteristics. A dataset of nine water quality constituents collected from 32 monitoring sites over a 11-year period (2006-2016), across the Great Barrier Reef catchments (Queensland, Australia), were evaluated by multivariate techniques. Two clusters were identified, which were strongly associated with catchment characteristics. A two-step Principal Component Analysis/Factor Analysis revealed four groupings of constituents with similar spatial pattern and allowed the key catchment characteristics affecting water quality to be determined. These findings provide a more nuanced view of spatial variations in water quality compared with previous understanding and an improved basis for water quality management to protect nearshore marine ecosystem.

【 授权许可】

Free