Multivariate and geo-spatial approach for seawater quality of Chidiyatappu Bay, south Andaman Islands, India
| Autor: | Apurba Kumar Das, Dilip Kumar Jha, P.S. Dheenan, Mehmuna Begum, Nambali Valsalan Vinithkumar, Marimuthu Prashanthi Devi, Biraja Kumar Sahu, Ramalingam Kirubagaran |
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| Rok vydání: | 2014 |
| Předmět: |
Pollution
Chlorophyll Chlorophyll a Multivariate statistics Salinity media_common.quotation_subject Oceans and Seas India Aquatic Science Oceanography chemistry.chemical_compound Humans Ecosystem Seawater Nitrites media_common Islands Analysis of Variance Principal Component Analysis Chlorophyll A Sampling (statistics) chemistry Bays Principal component analysis Multivariate Analysis Environmental science Bay Environmental Monitoring |
| Zdroj: | Marine pollution bulletin. 96(1-2) |
| ISSN: | 1879-3363 |
| Popis: | Chidiyatappu Bay is one of the least disturbed marine environments of Andaman & Nicobar Islands, the union territory of India. Oceanic flushing from southeast and northwest direction is prevalent in this bay. Further, anthropogenic activity is minimal in the adjoining environment. Considering the pristine nature of this bay, seawater samples collected from 12 sampling stations covering three seasons were analyzed. Principal Component Analysis (PCA) revealed 69.9% of total variance and exhibited strong factor loading for nitrite, chlorophyll a and phaeophytin. In addition, analysis of variance (ANOVA-one way), regression analysis, box-whisker plots and Geographical Information System based hot spot analysis further simplified and supported multivariate results. The results obtained are important to establish reference conditions for comparative study with other similar ecosystems in the region. |
| Databáze: | OpenAIRE |
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