Speciation of nitrogen in the coral reef sedimentary environment of Lakshadweep archipelago, Indian ocean

Gopinath, Anu; Kumar, N. C.; Padmalal, D.; Nair, Swapna S.

doi:10.1080/02757540410001689759

Cited by 6 publications

(1 citation statement)

References 9 publications

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“…Detritus formation and release during death and decay from the macrophytes have been viewed as a significant source of organic carbon in the reef areas particularly in the lagoon environment. Further, aggregation of migrating fishes, crustaceans and molluscs and their excretory products could also seem to serve as another 158 Distributional characteristics in fractionation of phosphorus in a coral reef sedimentary environment Gopinath et al, 2004;Vinithkumar et al, 1999). In the lagoon as well as seaside transect stations of Kiltan, Agathy and Kadamath, organic carbon exhibited poor co-variability with (Organic þ Residual) P. This was also observed in the core profile of Kavaratti (northern as well as southern cores) beyond 60 cm depth.…”

Section: Discussionmentioning

confidence: 99%

Distributional characteristics in fractionation of phosphorus in a coral reef sedimentary environment

Gopinath

Chandramohanakumar

Padmalal

et al. 2008

Chemical Speciation & Bioavailability

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This paper focuses on the distribution of an important micronutrient element, phosphorus in the various coral reef sedimentary environments of the Lakshadweep Archipelago, in the Indian Ocean. One of the salient features observed is the high concentration of organic and residual phosphorous compared to inorganic phosphorous. This is particularly evident at stations characterised by higher total phosphorous concentrations. The concentrations of total phosphorous decrease with depth because of the upward migration of phosphate produced by mineralization of organic phosphorous and also as a result of the reduction of iron oxides to which phosphate is adsorbed. Among the inorganic forms, the major contribution towards total phosphorous pool was from calcium bound phosphorous. Sedimentary pH was not found to be a decisive factor in the distributional features of phosphorous forms in the surficial stations as well as in the core profile. In this study, organic carbon displayed co-variability with silty clay or fine sandy texture of the sediment. In most of the stations, organic carbon showed poor co-variance with organic and residual phosphorous form. This shows that major contribution towards organic and residual phosphorous form is from the residual fraction comprising biologically resistant or nonavailable phosphorous form composed of refractory materials.

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Section: Discussionmentioning

confidence: 99%

Distributional characteristics in fractionation of phosphorus in a coral reef sedimentary environment

Gopinath

Chandramohanakumar

Padmalal

et al. 2008

Chemical Speciation & Bioavailability

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Environmental characteristics of tropical coral reef-seagrass dominated lagoons (Lakshadweep, India) and implications to resilience to climate change

Nobi

Kumar

2013

Environ Earth Sci

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Erratum to: Environmental characteristics of tropical coral reef-seagrass dominated lagoons (Lakshadweep, India) and implications to resilience to climate change

Nobi

Kumar

2014

Environ Earth Sci

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In the original article, the value of pH (7.6-8.6) and the subsequent sentence given in the Abstract are an accidental typographical error and not representing the actual result of the study. It must read as ''The pH of sediment was relatively high in the coral reef compared to the seagrass area, indicating that the coral reefs of this area are not currently under the threat of ocean acidification''.The online version of the original article can be found under

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Speciation of nitrogen in the coral reef sedimentary environment of Lakshadweep archipelago, Indian ocean

Cited by 6 publications

References 9 publications

Distributional characteristics in fractionation of phosphorus in a coral reef sedimentary environment

Distributional characteristics in fractionation of phosphorus in a coral reef sedimentary environment

Environmental characteristics of tropical coral reef-seagrass dominated lagoons (Lakshadweep, India) and implications to resilience to climate change

Erratum to: Environmental characteristics of tropical coral reef-seagrass dominated lagoons (Lakshadweep, India) and implications to resilience to climate change

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