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- Title
Evaluation of spatial and temporal variations in marine sediments quality using multivariate statistical techniques.
- Authors
Alvarez, Odalys; Tagle, Margarita; Pascual, Jorge; Marín, Ma.; Clemente, Ana; Medina, Miriam; Palau, Raiza; Alfonso, Mario
- Abstract
Spatial and temporal variations of sediment quality in Matanzas Bay (Cuba) were studied by determining a total of 12 variables (Zn, Cu, Pb, As, Ni, Co, Al, Fe, Mn, V, CO, and total hydrocarbons (THC). Surface sediments were collected, annually, at eight stations during 2005-2008. Multivariate statistical techniques, such as principal component (PCA), cluster (CA), and lineal discriminant (LDA) analyses were applied for identification of the most significant variables influencing the environmental quality of sediments. Heavy metals (Zn, Cu, Pb, V, and As) and THC were the most significant species contributing to sediment quality variations during the sampling period. Concentrations of V and As were determined in sediments of this ecosystem for the first time. The variation of sediment environmental quality with the sampling period and the differentiation of samples in three groups along the bay were obtained. The usefulness of the multivariate statistical techniques employed for the environmental interpretation of a limited dataset was confirmed.
- Subjects
HEAVY metal content of marine sediments; MARINE sediment quality; PRINCIPAL components analysis; MULTIVARIATE analysis; MARINE sediment sampling; SPATIO-temporal variation
- Publication
Environmental Monitoring & Assessment, 2014, Vol 186, Issue 10, p6867
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-014-3895-2