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India

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Freelance Editor, Expert on paleo-climate and Environment research, Estuaries - Bioavailability and Bioaccumulation

Profile Summary

Dr. Ganapati Narayan Nayak (G.N. Nayak) Born on June 10th, 1957, in Ankola Taluka, Karnataka State, India. Education: B.Sc. in Geology, 1979 M.Sc. in Applied Geology, 1982 Ph.D. in Geology, 1986 Thesis Title: Studies on Morphology, Texture and Mineralogy of the Beaches along North Karnataka Coast around Karwar, India Academic Career: Goa University (1986 - 2019): Roles held include Lecturer, Reader, Professor, and Senior Professor. Courses Taught: Marine Geology, Sedimentology, and Marine Geochemistry to Master of Marine Sciences. Administrative Positions at Goa University: Chairman Board of Studies, Head of the Department, Dean of the Faculty. Member of University Executive Council, Academic Council, and Senate. Post-superannuation (2019-2022): CSIR Emeritus Scientist at Goa University. Professional Affiliations & Roles: President, Indian Association of Sedimentologists (IAS), since 2013. Expert, Goa State Wetland Authority (GSWA), since 2017. Member, Goa Environmental Protection Council (2007-2010). Expert Member, Goa State Climate Change (2017-2020). Several roles in academic and governmental organizations related to Marine Sciences and Oceanography. Research Accomplishments: Completed 20 externally funded projects (14 public, 6 private). Organized 6 National seminars/workshops. Supervision: 2 post-doctoral fellows, 16 Ph.D. students, 1 M.Phil. student, and several M.Sc. Dissertation students. Publications: Numerous research papers in international and national journals, book chapters, and conference proceedings. Conferences: Presented multiple papers nationally and internationally. Attended conferences in England (2010), USA (2012), and Germany (2019). Awards: Received accolades for research contributions, including The Rekha Nandi and Bhupesh Nandi Prize (2010) and The Shrimati Saroma Sanyal Memorial Prize (2007). Five research papers received Best Presentation Awards. Metrics: Google Scholar - 1538 citations, h-index 22, i10 index 51. ResearchGate - 1306 citations, h-index 20, score 865.9, 50860 reads. Research Expertise: Areas of speciality include Climate Science, Environmental Science, Coastal Geomorphology, Coastal and Estuarine Sedimentology, Sediment geochemistry, and the Bioavailability and Bioaccumulation of metals. Reviewer Activities: Peer reviewer for multiple international and national journals including Environmental Monitoring & Assessment, Environmental Earth Sciences, Toxicology & Environmental Chemistry, Ecotoxicology & Environmental Safety, Arabian Journal of Geosciences, Journal of Coastal Research, Journal of Asian Earth Sciences, Geo-Marine Letters, Journal of Oceanography and Marine Science, The Holocene, Limnology and Oceanography, Current Science, Indian Journal Marine Sciences, Journal of Geological Society of India, and Journal of Indian Association of Sedimentologists. Evaluated technical reports for the Ministry of Environment, CSIR, DST, and DOD, Govt. of India, primarily on Mining and Environment and Coastal zone projects. Assessed over 24 Ph.D. theses for various Indian universities.

Subject Matter Expertise

• ☆ Trace Elements
• ☆ Marine Chemistry
• ☆ Earth & Atmospheric Science
• ☆ Geochemistry
• ☆ Geology
• ☆ Sedimentology
• ☆ Lakes/Limnology
• ☆ Oceanography & Marine Science
• ☆ Climate Science
• ☆ Environmental Science
• ☆ Pollution Control & Waste Management
• ☆ Environmental Remediation

Services

• Writing
• Research
• Consulting

Writing Technical Writing, General Proofreading & Editing

Research Scientific and Technical Research

Consulting Scientific and Technical Consulting

Work Experience

Former Senior Professor - Teaching and Research; Former CSIR Emeritus Scientist

Goa University

December 1986 - June 2022

Faculty - Senior Professor and CSIR Emeritus Scientist

Goa University

December 1986 - June 2022

Education

M.Sc. Applied Geology; Ph.D Geology

karnatak university

July 1982 - July 1986

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Trishala Bhutia, Maheshwar R. Nasnodkar, Ganapati N. Nayak(2023). Speciation of metals in sediments and their bioaccumulation by edible bivalves (Cassosstrea spp. and Polymesoda spp.) in the aquatic bodies of Goa, west coast of India . Arabian Journal of Geosciences. 16. (6). Springer Science and Business Media {LLC}

Shabnam Choudhary, Ganapati N. Nayak, Neloy Khare(2022). Sedimentary processes, metal enrichment and potential ecological risk of metals in lacustrine sediments of Svalbard, Arctic . Environmental Science and Pollution Research. Springer Science and Business Media {LLC}

Ankita Kanetkar, Maheshwar R. Nasnodkar, Ganapati N. Nayak(2022). Metal enrichment and toxicity assessment through total and speciation of metals in lower and middle regions of tropical (Mandovi) Estuary, western coast of India . Environmental Science and Pollution Research. 29. (46). p. 69949--69966. Springer Science and Business Media {LLC}

Ganapati Narayan Nayak(2021). Changing Tropical Estuarine Sedimentary Environments with Time and Metals Contamination, Cest Coast of India . Journal of The Indian Association of Sedimentologists. 38. (2). p. 63--78. Indian Association of Sedimentologists

Janhavi Kangane, Ganapati Narayan Nayak, Anoop Kumar Tiwari, Maheshwar R. Nasnodkar(2021). Physical/chemical weathering and climate fluctuations during last ~6000 years—investigation through a sediment core, off Mahanadi River mouth, western Bay of Bengal . Arabian Journal of Geosciences. 14. (16). Springer Science and Business Media {LLC}

Janhavi Kangane, Ganapati N. Nayak, Anoop Kumar Tiwari, Maheshwar R. Nasnodkar(2021). Physical/chemical weathering and climate fluctuations during last ~6000 years—investigation through a sediment core, off Mahanadi River mouth, western Bay of Bengal . Arabian Journal of Geosciences. 14. (16). Springer Science and Business Media {LLC}

Priyanka P. Bhangle, Ganapati Nayak, S. Choudhary(2021). Processes and metal enrichment of adjacent mudflat and mangrove environments in the middle estuarine regions of tropical Mandovi Estuary, Goa, west coast of India . Environmental Earth Sciences. 80. (16). Springer Science and Business Media {LLC}

Priyanka P. Bhangle, Ganapati Nayak, S. Choudhary(2021). Processes and metal enrichment of adjacent mudflat and mangrove environments in the middle estuarine regions of tropical Mandovi Estuary, Goa, west coast of India . Environmental Earth Sciences. 80. (16). Springer Science and Business Media {LLC}

Racheal J. Rodrigues, Maheshwar R. Nasnodkar, Ganapati N. Nayak, Anoop Kumar Tiwari(2021). Bioaccumulation of metals by edible bivalve Saccostrea cucullata and its application as a bioindicator of metal pollution, tropical (Zuari) estuary, Goa, India . Arabian Journal of Geosciences. 14. (12). Springer Science and Business Media {LLC}

Ratnaprabha Siraswar, Ganapati Narayan Nayak, Cheryl Noronha D’Mello(2021). Metals bioavailability and toxicity in sediments of the main channel and subchannel of a tropical (Mandovi) estuary, Goa, India . Arabian Journal of Geosciences. 14. (11). Springer Science and Business Media {LLC}

Ratnaprabha Siraswar, Ganapati Narayan Nayak, Cheryl Noronha D’Mello(2021). Metals bioavailability and toxicity in sediments of the main channel and subchannel of a tropical (Mandovi) estuary, Goa, India . Arabian Journal of Geosciences. 14. (11). Springer Science and Business Media {LLC}

Maheshwar R. Nasnodkar, Ganapati N. Nayak, Priyanka P. Bhangle, Anoop Kumar Tiwari(2021). Spring-neap tides influence on bioavailability of metals and bioaccumulation in edible biota of the Zuari (tropical) Estuary . Environmental Monitoring and Assessment. 193. (4). Springer Science and Business Media {LLC}

Samida Prabhakar Volvoikar, Ganapati Narayan Nayak, Anant Pande, Chakka PrakashBabu(2021). Changes in depositional environment of the Savitri (tropical) estuary, central west coast of India . Arabian Journal of Geosciences. 14. (2). Springer Science and Business Media {LLC}

Samida Prabhakar Volvoikar, Ganapati Narayan Nayak, Anant Pande, Chakka PrakashBabu(2021). Changes in depositional environment of the Savitri (tropical) estuary, central west coast of India . Arabian Journal of Geosciences. 14. (2). Springer Science and Business Media {LLC}

Janhavi Kangane, Ganapati Nayak, Anoop Kumar Tiwari, S. M. Saalim(2021). Changing the paleo-depositional environment in the last 2300 years: a study through sedimentology and geochemistry of a sediment core, western Bay of Bengal . Environmental Earth Sciences. 80. (1). Springer Science and Business Media {LLC}

Tancy C. Cruz, Ganapati N. Nayak, Anoop Kumar Tiwari, Maheshwar R. Nasnodkar(2020). Assessment of metal pollution and bioaccumulation of metals by edible bivalve Polymesoda erosa in the Zuari Estuary, west coast of India . Marine Pollution Bulletin. 158. p. 111415. Elsevier {BV}

Maria C. Fernandes, Ganapati N. Nayak(2020). Depositional environment and metal distribution in mangrove sediments within middle region of tropical estuaries, Karnataka, west coast of India . Regional Studies in Marine Science. 39. p. 101473. Elsevier {BV}

Maria C. Fernandes, Ganapati N. Nayak(2020). Depositional environment and metal distribution in mangrove sediments within middle region of tropical estuaries, Karnataka, west coast of India . Regional Studies in Marine Science. 39. p. 101473. Elsevier {BV}

Shabnam Choudhary, Ganapati N. Nayak, Neloy Khare(2020). Source, mobility, and bioavailability of metals in fjord sediments of Krossfjord-Kongsfjord system, Arctic, Svalbard . Environmental Science and Pollution Research. 27. (13). p. 15130--15148. Springer Science and Business Media {LLC}

Ganapati N. Nayak(2020). Processes and factors regulating the growth of an intertidal mudflat within a middle estuarine region of Zuari tropical estuary, west coast of India . Arabian Journal of Geosciences. 13. (2). Springer Science and Business Media {LLC}

Maheshwar R. Nasnodkar, Ganapati N. Nayak(2019). Geochemical speciation of selected metals to understand source, bioavailability and toxicity in mudflat core sediments of a tropical (Vaghotan) estuary, India . Regional Studies in Marine Science. 31. p. 100803. Elsevier {BV}

Nikita S. Gadkar, Ganapati N. Nayak, Maheshwar R. Nasnodkar(2019). Assessment of metal enrichment and bioavailability in mangrove and mudflat sediments of the tropical (Zuari) estuary, west coast of India . Environmental Science and Pollution Research. 26. (24). p. 24998--25011. Springer Science and Business Media {LLC}

Maheshwar R. Nasnodkar, Ganapati N. Nayak(2019). Clay Minerals and Associated Metals in Mudflat Core Sediments of the Vaghotan Estuary, India: Implications of Metal Sorption . Journal of the Geological Society of India. 93. (4). p. 466--470. Springer Science and Business Media {LLC}

Purnima Bejugam, G. N. Nayak(2019). Tracing source–sink processes and productivity from trace metals (Ba, Zn, Pb, Cd) of the surface sediments off Mahanadi to Pennar, western Bay of Bengal . Environmental Earth Sciences. 78. (4). Springer Science and Business Media {LLC}

Shabnam Choudhary, G.N. Nayak, Anoop Tiwari, N. Khare(2018). Source, processes and productivity from distribution of surface sediments, Prydz Bay, East Antarctica . Polar Science. 18. p. 63--71. Elsevier {BV}

G. N. Nayak, S. P. Volvoikar, T. Hoskatta(2018). Changing depositional environment and factors controlling the growth of mudflat in a tropical estuary, west coast of India . Environmental Earth Sciences. 77. (21). Springer Science and Business Media {LLC}

Joel E. Diniz, G. N. Nayak, Cheryl A. Noronha-D’Mello, Ravi Mishra(2018). Reconstruction of palaeo-depositional environment in North-Eastern Arabian Sea . Environmental Earth Sciences. 77. (19). Springer Science and Business Media {LLC}

Maheshwar R. Nasnodkar, G. N. Nayak(2018). Assessment of sediment quality using total and bioavailable concentration of metals in intertidal mudflats of a tropical (Vashishti) estuary, west coast of India . Arabian Journal of Geosciences. 11. (17). Springer Science and Business Media {LLC}

Shabnam Choudhary, Ganapati Nayak, Anoop Kumar Tiwari, Neloy Khare(2018). Sediment composition and its effect on the productivity in Larsemann Hills, East Antarctica . Arabian Journal of Geosciences. 11. (15). Springer Science and Business Media {LLC}

Shabnam Choudhary, Anoop Tiwari, G.N. Nayak, Purnima Bejugam(2018). Sedimentological and geochemical investigations to understand source of sediments and processes of recent past in Schirmacher Oasis, East Antarctica . Polar Science. 15. p. 87--98. Elsevier {BV}

Maheshwar R. Nasnodkar, G. N. Nayak(2017). Chemical speciation and bio-availability of selected trace metals in the mudflat core sediments of the tropical estuaries, India . Environmental Earth Sciences. 76. (21). Springer Science and Business Media {LLC}

Purnima Bejugam, G.N. Nayak(2017). Source and depositional processes of the surface sediments and their implications on productivity in recent past off Mahanadi to Pennar River mouths, western Bay of Bengal . Palaeogeography, Palaeoclimatology, Palaeoecology. 483. p. 58--69. Elsevier {BV}

Lina L. Fernandes, G.N. Nayak(2016). Geochemical assessment and fractionation of trace metals in estuarine sedimentary sub-environments, in Mumbai, India . Environmental Nanotechnology, Monitoring & Management. 6. p. 14--23. Elsevier {BV}

Cheryl A. Noronha-D'Mello, G.N. Nayak(2016). Assessment of metal enrichment and their bioavailability in sediment and bioaccumulation by mangrove plant pneumatophores in a tropical (Zuari) estuary, west coast of India . Marine Pollution Bulletin. 110. (1). p. 221--230. Elsevier {BV}

Cheryl A. Noronha-D'Mello, G.N. Nayak(2016). Assessment of metal enrichment and their bioavailability in sediment and bioaccumulation by mangrove plant pneumatophores in a tropical (Zuari) estuary, west coast of India . Marine Pollution Bulletin. 110. (1). p. 221--230. Elsevier {BV}

Purnima Bejugam, G. N. Nayak(2016). Changing depositional environment revealed from sediment components, west of “Swatch of No Ground”, northern Bay of Bengal . Arabian Journal of Geosciences. 9. (9). Springer Science and Business Media {LLC}

Heidy Q. Dias, G.N. Nayak(2016). Geochemistry and bioavailability of mudflats and mangrove sediments and their effect on bioaccumulation in selected organisms within a tropical (Zuari) estuary, Goa, India . Marine Pollution Bulletin. 105. (1). p. 227--236. Elsevier {BV}

Maria C. Fernandes, G. N. Nayak(2016). Role of sediment size in the distribution and abundance of metals in a tropical (Sharavati) estuary, west coast of India . Arabian Journal of Geosciences. 9. (1). Springer Science and Business Media {LLC}

G. N. Nayak, Cheryl A. Noronha-D’Mello, Anant Pande, Samida P. Volvoikar(2016). Understanding sedimentary depositional environments through geochemical signatures of a Tropical (Vaghotan) estuary, West Coast of India . Environmental Earth Sciences. 75. (2). Springer Science and Business Media {LLC}

G. N. Nayak, Cheryl A. Noronha-D’Mello, Anant Pande, Samida P. Volvoikar(2016). Understanding sedimentary depositional environments through geochemical signatures of a Tropical (Vaghotan) estuary, West Coast of India . Environmental Earth Sciences. 75. (2). Springer Science and Business Media {LLC}

Maria C. Fernandes, G.N. Nayak(2015). Speciation of metals and their distribution in tropical estuarine mudflat sediments, southwest coast of India . Ecotoxicology and Environmental Safety. 122. p. 68--75. Elsevier {BV}

Cheryl A. Noronha-D'Mello, G.N. Nayak(2015). Geochemical characterization of mangrove sediments of the Zuari estuarine system, West coast of India . Estuarine, Coastal and Shelf Science. 167. p. 313--325. Elsevier {BV}

Maheshwar R. Nasnodkar, G. N. Nayak(2015). Processes and factors regulating the distribution of metals in mudflat sedimentary environment within tropical estuaries, India . Arabian Journal of Geosciences. 8. (11). p. 9389--9405. Springer Science and Business Media {LLC}

Samida P. Volvoikar, G.N. Nayak(2015). Impact of industrial effluents on geochemical association of metals within intertidal sediments of a creek . Marine Pollution Bulletin. 99. (1-2). p. 94--103. Elsevier {BV}

Samida P. Volvoikar, G.N. Nayak(2015). Impact of industrial effluents on geochemical association of metals within intertidal sediments of a creek . Marine Pollution Bulletin. 99. (1-2). p. 94--103. Elsevier {BV}

Anant Pande, G. N. Nayak, Vandana Prasad, C. PrakashBabu(2015). Geochemical and diatom records of recent changes in depositional environment of a tropical wetland, central west coast of India . Environmental Earth Sciences. 73. (9). p. 5447--5461. Springer Science and Business Media {LLC}

Samida P. Volvoikar, G. N. Nayak(2014). Factors controlling the distribution of metals in intertidal mudflat sediments of Vaitarna estuary, North Maharashtra coast, India . Arabian Journal of Geosciences. 7. (12). p. 5221--5237. Springer Science and Business Media {LLC}

M. C. Fernandes, G. N. Nayak, A. Pande, S. P. Volvoikar, D. R. G. Dessai(2014). Depositional environment of mudflats and mangroves and bioavailability of selected metals within mudflats in a tropical estuary . Environmental Earth Sciences. 72. (6). p. 1861--1875. Springer Science and Business Media {LLC}

Ksh. Tomchou Singh, G.N. Nayak, Lina L. Fernandes, D.V. Borole, N. Basavaiah(2014). Changing environmental conditions in recent past — Reading through the study of geochemical characteristics, magnetic parameters and sedimentation rate of mudflats, central west coast of India . Palaeogeography, Palaeoclimatology, Palaeoecology. 397. p. 61--74. Elsevier {BV}

Lina L. Fernandes, G.N. Nayak(2014). Characterizing metal levels and their speciation in intertidal sediments along Mumbai coast, India . Marine Pollution Bulletin. 79. (1-2). p. 371--378. Elsevier {BV}

Samida P. Volvoikar, G.N. Nayak, Aninda Mazumdar, Aditya Peketi(2014). Reconstruction of depositional environment of a tropical estuary and response of δ13Corg and TOC/TN signatures to changing environmental conditions . Estuarine, Coastal and Shelf Science. 139. p. 137--147. Elsevier {BV}

BOOK CHAPTER

Shabnam Choudhary, G. N. Nayak, Neloy Khare(2022). Biogenic Silica Indicator of Paleoproductivity in Lacustrine Sediments of Svalbard, Arctic . Climate Change in the Arctic. p. 83--92. {CRC} Press

Shabnam Choudhary, G. N. Nayak, Neloy Khare(2022). Nutrient Cycling and Productivity in Antarctic Lakes . Earth and Environmental Sciences Library. p. 141--152. Springer International Publishing

Shabnam Choudhary, G. N. Nayak, Neloy Khare(2022). Nutrient Cycling and Productivity in Antarctic Lakes . Earth and Environmental Sciences Library. p. 141--152. Springer International Publishing

Ganapati N. Nayak, Purnima Bejugam, Janhavi Kangane(2022). Reading source, Holocene climate change and monsoon signatures in surface and core sediments from western Bay of Bengal . Holocene Climate Change and Environment. p. 197--229. Elsevier

G. N. Nayak, K. T. Singh(2022). Source, Processes, and Depositional Environments of Estuarine Mudflat Core Sediments, Central Western Coast of India . Geochemical Treasures and Petrogenetic Processes. p. 123--152. Springer Nature Singapore

Shabnam Choudhary, G.N. Nayak, Neloy Khare(2021). Lakes and fjords of Polar regions—potential indicators of climate change . Understanding Present and Past Arctic Environments. p. 31--47. Elsevier

Lina L. Fernandes, G. N. Nayak(2017). Assessing Metal Contamination in Recent Creek Sediments Using Fractionation Technique Along Mumbai Coast, India . Marine Pollution and Microbial Remediation. p. 1--13. Springer Singapore

Lina L. Fernandes, G. N. Nayak(2013). Assessment of Metal Pollution in Ulhas Estuary, Mumbai, India . On a Sustainable Future of the Earth's Natural Resources. p. 395--409. Springer Berlin Heidelberg