Ratola, Nuno and Amigo, José Manuel and Oliveira, Monica and Araújo, Rita and Silva, José A. and Alves, Arminda (2011) Differences between Pinus pinea and Pinus pinaster as bioindicators of polycyclic aromatic hydrocarbons. Environmenal and Experimental Botany, 72 (2). pp. 339-347. ISSN 0098-8472
|PDF - Draft Version |
Download (1565Kb) | Preview
The potential of Univariate and Multivariate Analysis and specifically Principal Components Analysis (PCA), has been employed to assess the performance of pine needles as bioindicators of polycyclic aromatic hydrocarbons (PAHs) and particularly emphasize the crucial importance of making a distinction between different pine species if more than one is sampled. Four sampling sessions were done in 29 sites and needles of two common pine species (Pinus pinaster Ait. in 19 sites and Pinus pinea L. in 12) were collected and analysed using gas chromatography–mass spectrometry (GC–MS) and PCA. The results obtained indicated significant differences between species, attributed to their different morphology. The mean total PAH concentration of the P. pinaster needles are over two times higher than P. pinea’s. This difference is lower when the results are presented in lipid weight, but still statistically significant. Samples from the two sites with adjacent trees reinforce these conclusions, showing significant differences in terms of PAH mean concentration and aromatic ring patterns.
|Keywords:||pine needles, biomonitoring, PAHs, principal components analysis, Mechanical engineering and machinery, Botany|
|Subjects:||Technology > Mechanical engineering and machinery|
Science > Botany
|Department:||Faculty of Engineering > Mechanical and Aerospace Engineering|
?? 118 ??
|Depositing user:||Pure Administrator|
|Date Deposited:||10 Oct 2012 10:59|
|Last modified:||13 Jun 2013 13:39|
Actions (login required)