Environmental geochemistry of the Pichavaram mangrove ecosystem (tropical), southeast coast of India

Ramanathan, Alagappan; Subramanian, V.; Ramesh, R.; Chidambaram, S.; James, A.

doi:10.1007/s002540050380

Cited by 141 publications

(66 citation statements)

References 16 publications

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“…Nitrate and phosphate are contributed by fertiliser input from adjoining agricultural fields (Ramanathan et al 1999). This study also showed that the Pichavaram mangrove seems to be relatively unpolluted, since the anthropogenic signal observed is small and acts as a sink for heavy metals contributed from a multitude of sources without an adverse effect.…”

Section: Pichavaram Mangrove Wetlandmentioning

confidence: 79%

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Ecology and the Environment

Trivedi¹

2013

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Section: Pichavaram Mangrove Wetlandmentioning

confidence: 79%

“…The Pichavaram mangrove wetland (latitude 11°22'N to 11°30'N and longitude 79°45'E to 79°52'E), is located in the northernmost end of the Cauvery delta (Ramanathan et al 1999). This is interconnected with the estuaries of the Vellar River in the north, the Coleroon River in the south and the Uppanar River in the west.…”

Section: Pichavaram Mangrove Wetlandmentioning

confidence: 99%

Ecology and the Environment

Trivedi¹

2013

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“…The mean value of 45.6  51.4% obtained in this study is higher than that reported by Ezekiel et al (2011) The drainage scheme within the shores of the study area that houses the artisanal refining must have also drained organic matter down the river bed. It could also be due to the presence of mangrove and terrestrial detritus in the suspended matter and also due to the fine nature of sediments, high rate of sedimentation, decomposition of mangrove foliage and other vegetative remains in the sediments (Ramanathan, 1997). As reported by Saravana kumar et al (2008) and Sawant et al (2011) the distribution of TOC/TOM closely followed distribution of sediment type i.e., sediment low in clay content was low in TOC/TOM value and as the clay content increased, the TOC/TOM also increased.…”

Section: Resultsmentioning

confidence: 99%

Investigation on impacts of artisanal refining of crude oil on river bed sediments

Clinton¹,

Azuatola²,

Abiodun³

2017

Our Nature

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The impact of artisanal refining of crude oil on the river bed sediments of the study area was investigated by assessing some quality properties. The result showed some consistency across the stations of the study area; however there were some differences between the values of the test stations and control station indicating some level of impacts on the quality of the sediments. .383 and 0.2610.128, respectively. The result indicated that the said activities affected the pH, PO4 3-, SO4 2-, NO 3-, Cl -etc. of the study area; as these values were consistently lower than that of the control station. Again some of the quality properties were higher or lower than those of the control station and some related studies within and outside the region of the study area indicating some impacts which could be mostly anthropogenic. These impacts if not checked and the makeshift refining of the crude oil stopped by the appropriate regulatory bodies could have some adverse effects on the aquatic life quality of the ecosystem.

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“…This indicates that heavy metal pollution is serious due probably to the higher degree of industrialization during the last two decades in the Pearl River delta region. Ramanathan et al (1999) observed high concentration of Fe in mangrove sediments. This might be the result of the textural and mineralogical characteristics of the mangrove sediments.…”

Section: +mentioning

confidence: 96%

Statistical Perspective and Pollution Indicator in Mengkabong Mangrove Sediment Sabah

Radojević¹,

Praveena²,

Abdullah³

2008

MAS

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The role of tidal processes on intertidal surface sediments is frequently stated but rarely investigated due to the methodological restrictions. This study provides a basis for describing the tidal effects on the mangrove sediment. It reports investigations into the chemical composition of mangrove surface sediment in Mengkabong lagoon, Sabah, Malaysia. The levels of 16 parameters were determined in 33 surface sediment samples at high and low tides. The studied parameters showed high values at high tide compared to low tide. The tidal process showed there is a high contribution of seawater that brings additional ions such as Na, Mg and K into the mangrove system at high tide whereas at low tide, lower contribution of seawater was observed.Spearman correlation coefficient was used for the statistical characterizations of mangrove surface sediment at high and low tides.Relationships between physicochemical parameters, metals, granulometric fractions, organic matter and base cations at high and low tides were observed. Geoaccumulation Index calculations showed current sediment quality of Mengkabong mangrove sediments could be classified as having background concentrations of Al, Cu, Fe, and Zn, and as unpolluted with regard to Pb. These findings are important for future research which will explain the chemistry that lies in mangrove sediment.

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Environmental geochemistry of the Pichavaram mangrove ecosystem (tropical), southeast coast of India

Cited by 141 publications

References 16 publications

Ecology and the Environment

Ecology and the Environment

Investigation on impacts of artisanal refining of crude oil on river bed sediments

Statistical Perspective and Pollution Indicator in Mengkabong Mangrove Sediment Sabah

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