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Risk Assessment

Risk Assessment

Sea Water Quality Criteria

  • Collection, transportation, acclimation and maintenance of marine organisms for toxicity bioassay experiments.
  • Toxicity bioassay experiments on marine organisms for metals(Cd, Cu, Pb, Zn, Hg, As, Cr, Ni, Se), organics (monocrotophos, chlorpyrifos) and hydrocarbons (Anthracene and Benzo-a-pyrene)
  • Derivation of toxicity values: Median lethal Concentration (LC50), Lowest Observed Effect Concentration (LOEC), No Observed Effect Concentration (NOEC) and Chronic values (CV).
  • Measurements of the metals and pesticide of the experimental samples using the analytical instruments like Gas Chromatography (GC) fitted with FPD and FID Detectors, Atomic Absorption spectrophotometer.
  • Histology: Histological observations in the tissue sections of the matine organisms after exposure to the sublethal concentrations of the selected metal/pesticide/hydrocarbons
  • Biochemistry: Biochemical enzyme activities by using Multimode Reader and Native PAGE (Polyacrylamide Gel Electrophoresis).
  • Derivation of Sea Water Quality Criteria based on the Acute and Chronic toxicity values of marine organisms.

 

Ecological Risk Assessment

  • Monitoring of metals, PAHs, TPH in water and sediment samples of Ennore, Uppanar, and Vellar Estuaries
  • Monitoring of water quality parameters and nutrients from the samples of Ennore, Uppanar, and Vellar Estuaries
  • Qualitative and quantitative analysis of the benthos from the sediment samples of selected estuarine transects.
  • Comprehensive sediment quality assessment through integrated approach by using sediment toxicity bioassay, measurement of contaminants and benthic biodiversity assessment.
  • Collection and optimization of monoculture of diatoms, copepods, Polychaete larvae and barnacles from mixed culture for toxicity bioassays.
  • Microcosm experiments on marine diatoms, copepods, and larvae of polychaete and barnacles for toxicity sediment extracts collected from Ennore, Uppanar, and Vellar Estuaries.
  • Derivation of environmental quality indices for the assessment of extent of damage due to metal/TPH/PAH pollutants.
  • Field based in situ mesocosm experiments on selected marine organisms at Ennore estuary for the risk assessment of metals of concern.

 

  • Developed seawater quality criteria for SW-III (Industrial cooling, Recreation – non-contact and Aesthetics – dissolved manganese) and SW-V (Navigation and Controlled Waste Disposal) for 7 heavy metals (Cu, Hg, Cd, Pb, Zn, As, Cr) and pesticide (Monochrotophos).
  • Draft gazette notification has been issued by MoEF&CC based on the reports submitted by NCCR.

 

Prescribing numerical Sea Water Quality Criteria (SWQC) for priority toxic chemicals in the form of Standards as ‘Safe limits’ for protection, survival, and perpetuation of marine life for the benefit of all.

 

Implementation of MEERA- Programme is to ensure a regulatory action for control and abatement of toxic and hazardous chemicals into the coastal and marine environment for best use classes of seawater.

Ecological risk assessment is an scientific strategy for developing environmentally reliable quality standards for the sustainable management of coastal and marine environment .

Comprehensive risk assessment is to identify environmental risk from trace and emerging toxic chemicals for deriving environmental quality indices and standards through an integrated approach.

 

  • Marigoudar, S. R., A. Nagarjuna, P. Karthikeyan, D. Mohan, and K. V. Sharma (2018). Comparative toxicity of chlorpyrifos: Sublethal effects on enzyme activities and histopathology of Mugil cephalus and Chanos chanos. Chemosphere 211, 89-101.
  • Marigoudar, S.R., Mohan, D., Nagarjuna, A. and Karthikeyan, P., 2018. Biomarker and histopathological responses of Lates calcarifer on exposure to sub lethal concentrations of chlorpyrifos. Ecotoxicology and environmental safety, 148, pp.327-335
  • Nagarjuna, A., Karthikeyan, P., Mohan, D. and Marigoudar, S.R., 2018. Effect of selenium on Penaeus monodon and Perna viridis: Enzyme activities and histopathological responses. Chemosphere.
  • Panneerselvam, K., Marigoudar, S.R. and Dhandapani, M., 2018. Toxicity of Nickel on the Selected Species of Marine Diatoms and Copepods. Bulletin of environmental contamination and toxicology, 100(3), pp.331-337.

S.No Name Designation Specialization E-mail
1 Mr. K. Venkatarama Sharma Scientist F & Group Head Microbiology   venkat[at]nccr[dot]gov[dot]in
2 Dr.S.R.Marigoudar Scientist D Marine biology - Ecotoxicology srmarigoudar[at]nccr[dot]gov[dot]in
3 Dr. P. Karthikeyan Project Scientist C Marine biology – Plankton biology and toxicology karthi[at]nccr[dot]gov[dot]in
4 Dr. A. Nagarjuna Project Scientist C Zoology – Histopathology and Biochemistry nagarjuna[at]nccr[dot]gov[dot]in
5 Dr. P. Raja Project Scientist B Coastal Aquaculture – Ornamental fishes, Plankton ecology raja[at]nccr[dot]gov[dot]in
6

Mr. M. Savurirajan

Project Scientist B Marine biology- Benthic ecology & Sea grass ecosystem savurirajan[at]nccr[dot]gov[dot]in
7 Mr.Barath Kumar Project Scientist B Marine Biotechnology- Ecotoxicology barath[at]nccr[dot]gov[dot]in
8 Ms. M. Kunguma Kannika Ph.D - Research Scholar Triclosan impact on marine organisms  
9 Mr. V. Satheeshkumar Field Assistant Assisting in laboratory & field activities satheesh288@gmail.com
10 Mr. Pasala Munimohan Field Attendant Assisting in laboratory & field activities pmunimohan@gmail.com


National Dialogue on Marine Ecotoxicology  and Ecological Risk Assessment (ND-MEERA)

Brainstorming workshop on ‘Ecological Risk assessment for heavy metals

Sampling at Adyar estuary

 

Ennore-mixing zone near ETS

Fisherman collecting Polychaete

Surface sediment samples of Ennore estuary

Diversity of Cerithidea-Ennore estuary

 

Swarming of Crabs-Ennore estuary

Ennore estuary Barmouth

Ennore estuary 

Seagull Bird at Ennore estuary

 

Acclimation of Green Mussel

Green Mussle collection on rocky shore

Analytical activities for Trace metals

Electrophoresis Gel Analysis

 

Laboratory activities for bio-chemical analysis

Algal culture experiments

Growth inhibition bioassay

Laboratory activity for standard preparation

 

 Flow through experiment for hydrocarbon

Laboratory Interaction

Animal ethical committee meeting

Customized flow through bioassay system