Now showing items 1-19 of 19

    • Comparative studies on trace metal geochemistry in Indian and Chinese rivers 

      Alagarsamy, R.; Zhang, J. (Indian Academy of Sciences, 2005)
      The trace metal geochemistry in Indian and Chinese rivers in the Asian region was studied to understand its variation on a global scale in terms of climate, geological conditions and anthropogenic impact. The average ...
    • Connecting land use-land cover and precipitation with organic matter biogeochemistry in a tropical river-estuary system of western peninsular India 

      Pradhan, U.K.; Wu, Y.; Shirodkar, P.V.; Kumar, H.S.; Zhang, J. (Academic Press, 2020)
      Organic matter (OM) composition changed due to land use - land cover (LULC) and hydrology modification, has distinctive linkage towards sustainable environment management in tropical river systems. It is crucial in small ...
    • Effects of natural and human-induced hypoxia on coastal benthos 

      Levin, L.A.; Ekau, W.; Gooday, A.J.; Jorissen, F.; Middelburg, J.J.; Naqvi, S.W.A.; Neira, C.; Rabalais, N.N.; Zhang, J. (European Geosciences Union, 2009)
      Coastal hypoxia (defined here as <1.42 ml L sup(-1); 62.5 mew M; 2 mg L sup(-1), approx. 30% oxygen saturation) develops seasonally in many estuaries, fjords, and along open coasts as a result of natural upwelling or from ...
    • Geochemical characterisation of major and trace elements in the coastal sediments of India 

      Alagarsamy, R.; Zhang, J. (Springer, 2010)
      Thirty-five surface sediment samples from the Indian continental shelf were recovered offshore from the mouths of the major rivers (Brahmaputra, Ganges, Narmada, Tapti, Godavari, Krishna and Cauvery) discharging into the ...
    • Geochemistry of the suspended sediment in the estuaries of the Mandovi and Zuari rivers, central west coast of India 

      Kessarkar, P.M.; Shynu, R.; Rao, V.P.; Chong, F.; Narvekar, T.; Zhang, J. (Springer, 2013)
      The geochemistry of the suspended particulate matter (SPM) collected during the monsoon was determined to identify the sources of SPM and to understand the physicochemical processes in the Mandovi and Zuari river estuaries. ...
    • Historical records of coastal eutrophication-induced hypoxia 

      Gooday, A.J.; Jorissen, F.; Levin, L.A.; Middelburg, J.J.; Naqvi, S.W.A.; Rabalais, N.N.; Scranton, M.; Zhang, J. (European Geosciences Union, 2009)
      Under certain conditions, sediment cores from coastal settings subject to hypoxia can yield records of environmental changes over time scales ranging from decades to millennia, sometimes with a resolution of as little as ...
    • Hypoxia in the changing marine environment 

      Zhang, J.; Cowie, G.; Naqvi, S.W.A. (IOP Publishing, 2013)
      The predicted future of the global marine environment, as a combined result of forcing due to climate change (e.g. warming and acidification) and other anthropogenic perturbation (e.g. eutrophication), presents a challenge ...
    • Investigations of the spatial and temporal variations of Sr and Nd isotopes in sediments from two Indian Rivers: Implications to source identification 

      Pradhan, S.; Zhang, J.; Baskaran, M.; Shirodkar, P.V.; Wu, Y.; Pradhan, U.K. (Wiley, 2017)
      Radiogenic isotopes of Sr and Nd provide crucial information on chemical and physical erosion processes, therefore used as tracers for fingerprinting the sources of fluvial sediments. Moreover, elemental geochemistry, ...
    • Marine hypoxia/anoxia as a source of CH4 and N2O 

      Naqvi, S.W.A.; Bange, H.W.; Farias, L.; Monteiro, P.M.S.; Scranton, M.I.; Zhang, J. (European Geosciences Union, 2010)
      We review here the available information on methane (CH sub(4)) and nitrous oxide (N sub(2)O) from major marine, mostly coastal, oxygen (O sub(2))-deficient zones formed both naturally and as a result of human activities ...
    • Multi-proxy evidence for compositional change of organic matter in the largest tropical (peninsular) river basin of India 

      Pradhan, U.K.; Ying Wu; Shirodkar, P.V.; Zhang, J.; Zhang, G. (Elsevier, 2014)
      The distribution and compositional changes of organic matter (OM) within the Godavari river system is increasingly influenced by reduced monsoon rainfall and an increased number of damming. To track these changes stable ...
    • Natural and human-induced hypoxia and consequences for coastal areas: Synthesis and future development 

      Zhang, J.; Gilbert, D.; Gooday, A.J.; Levin, L.; Naqvi, S.W.A.; Middelburg, J.J.; Scranton, M.; Ekau, W.; Pena, A.; Dewitte, B.; Oguz, T.; Monteiro, M.S.; Urban, E.; Rabalais, N.N.; Ittekkot, V.; Kemp, W.M.; Ulloa, O.; Elmgren, R.; Escobar-Briones, E.; Van der Plas, A.K. (European Geosciences Union, 2010)
      Hypoxia has become a world-wide phenomenon in the global coastal ocean and causes a deterioration of the structure and function of ecosystems. Based on the collective contributions of members of SCOR Working Group 128, the ...
    • Response of a natural Phytoplankton community from the Qingdao coast (Yellow Sea, China) to variable CO<sub>2</sub> levels over a short-term incubation experiment 

      Biswas, H.; Jie, J.; Li, Y.; Zhang, G.; Zhu, Z.-Y.; Wu, Y.; Zhang, G.-L.; Li, Y.-W.; Liu, S.M.; Zhang, J. (Current Science Association, 2015)
      Since marine phytoplankton play a vital role in stabilizing earth’s climate by removing significant amount of atmospheric CO<sub>2</sub>, their responses to increasing CO<sub>2</sub> levels are indeed vital to address. The ...
    • Seasonal nutrient chemistry in mountainous river systems of tropical Western Peninsular India 

      Pradhan, U.K.; Wu, Y.; Shirodkar, P.V.; Zhang, J. (Taylor and Francis, 2015)
      Nutrient chemistry was studied in three mountainous rivers (Mandovi, Zuari and Netravati), across western peninsular India (WPI) during south-west monsoon (SWM), post-monsoon and pre-monsoon seasons of year 2011-2012. ...
    • Sources and distribution of organic matter in thirty five tropical estuaries along the west coast of India-a preliminary assessment 

      Pradhan, U.K.; Wu, Y.; Shirodkar, P.V.; Zhang, J.; Zhang, G. (Elsevier, 2014)
      Studies characterizing the sources of organic matter (OM) to the west coast of India (WCI) and its continental shelf are limited. This study examined sedimentary OM in 35 estuaries along the WCI using molecular biomarkers ...
    • Sources and implications of particulate organic matter from a small tropical river-Zuari River, India 

      Fernandes, Dearlyn; Wu, Y.; Shirodkar, P.V.; Pradhan, U.K.; Zhang, J. (Springer Verlag, 2020)
      Transitional ecosystems, estuaries and the coastal seas, are distinctively affected by natural and anthropogenic factors. Organic matter (OM) originating from terrestrial sources is exported by rivers and forms a key ...
    • Sources and preservation dynamics of organic matter in surface sediments of Narmada River, India - Illustrated by amino acids 

      Fernandes, D.; Wu, Y.; Shirodkar, P.V.; Pradhan, U.K.; Zhang, J.; Limbu, S.M. (2020)
      The preservation process of organic matter (OM) in estuarine environments determines the recycling and sinking of nutrients. This process requires the identification of sources, degradation states and the main processes ...
    • Spatial and temporal variations in source, diagenesis, and fate of organic matter in sediments of the Netravati River, India 

      Fernandes, D.; Wu, Y.; Shirodkar, P.V.; Pradhan, U.K.; Zhu, Z.Y.; Zhang, J.; Limbu, S.M. (2019)
      Organic matter (OM) such as organic nitrogen plays a substantial role in the global biogeochemical cycling of bio-reactive components-amino acids (AA) in aquatic environments. Spatial and temporal variations in source, ...
    • The GEOTRACES Intermediate Data Product 2017 

      Schlitzer, R.; Anderson, R.F.; Dodas, E.M.; Lohan, M.; Geibert, W.; Tagliabue, A.; Bowie, A.; Jeandel, C.; Maldonado, M.T.; Landing, W.M.; Cockwell, D.; Abadie, C.; Abouchami, W.; Achterberg, E.P.; Agather, A.; Aguliar-Islas, A.; van Aken, H.M.; Andersen, M.; Archer, C.; Auro, M.; DeBaar, H.J.; Baars, O.; Baker, A.R.; Bakker, K.; Basak, C.; Baskaran, M.; Bates, N.R.; Bauch, D.; VanBeek, P.; Behrens, M.K.; Black, E.; Bluhm, K.; Bopp, L.; Bouman, H.; Bowman, K.; Bown, J.; Boyd, P.; Boye, M.; Boyle, E.A.; Branellec, P.; Bridgestock, L.; Brissebrat, G.; Browning, T.; Bruland, K.W.; Brumsack, H.-J.; Brzezinski, M.; Buck, C.S.; Buck, K.N.; Buesseler, K.; Bull, A.; Butler, E.; Cai, P.; Mor, P.C.; Cardinal, D.; Carlson, C.; Carrasco, G.; Casacuberta, N.; Casciotti, K.L.; Castrillejo, M.; Chamizo, E.; Chance, R.; Charette, M.A.; Chaves, J.E.; Cheng, H.; Chever, F.; Christl, M.; Church, T.M.; Closset, I.; Colman, A.; Conway, T.M.; Cossa, D.; Croot, P.; Cullen, J.T.; Cutter, G.A.; Daniels, C.; Dehairs, F.; Deng, F.; Dieu, H.T.; Duggan, B.; Dulaquais, G.; Dumousseaud, C.; Echegoyen-Sanz, Y.; Edwards, R.L.; Ellwood, M.; Fahrbach, E.; Fitzsimmons, J.N.; Russell Flegal, A.; Fleisher, M.Q.; VanDe Flierdt, T.; Frank, M.; Friedrich, J.; Fripiat, F.; Frollje, H.; Galer, S.J.G.; Gamo, T.; Ganeshram, R.S.; Garcia-Orellana, J.; Garcia-Solsona, E.; Gault-Ringold, M.; George, E.; Gerringa, L.J.A.; Gilbert, M.; Godoy, J.M.; Goldstein, S.L.; Gonzalez, S.R.; Grissom, K.; Hammerschmidt, C.; Hartman, A.; Hassler, C.S.; Hathorne, E.C.; Hatta, M.; Hawco, N.; Hayes, C.T.; Heimburger, L.-E.; Helgoe, J.; Heller, M.; Henderson, G.M.; Henderson, P.B.; van Heuven, S.; Ho, P.; Horner, T.J.; Hsieh, Y.-T.; Huang, K.-F.; Humphreys, M.P.; Isshiki, K.; Jacquot, J.E.; Janssen, D.J.; Jenkins, W.J.; John, S.; Jones, E.M.; Jones, J.L.; Kadko, D.C.; Kayser, R.; Kenna, T.C.; Khondoker, R.; Kim, T.; Kipp, L.; Klar, J.K.; Klunder, M.; Kretschmer, S.; Kumamoto, Y.; Laan, P.; Labatut, M.; Lacan, F.; Lam, P.J.; Lambelet, M.; Lamborg, C.H.; LeMoigne, F.A.C.; LeRoy, E.; Lechtenfeld, O.J.; Lee, J.-M.; Lherminier, P.; Little, S.; Lopez-Lora, M.; Lu, Y.; Masque, P.; Mawji, E.; Mcclain, C.R.; Measures, C.; Mehic, S.; Barraqueta, J.-L.M.; van der Merwe, P.; Middag, R.; Mieruch, S.; Milne, A.; Minami, T.; Moffett, J.W.; Moncoiffe, G.; Moore, W.S.; Morris, P.J.; Morton, P.L.; Nakaguchi, Y.; Nakayama, N.; Niedermiller, J.; Nishioka, J.; Nishiuchi, A.; Noble, A.; Obata, H.; Ober, S.; Ohnemus, D.C.; vanOoijen, J.; OSullivan, J.; Owens, S.; Pahnke, K.; Paul, M.; Pavia, F.; Pena, L.D.; Peters, B.; Planchon, F.; Planquette, H.; Pradoux, C.; Puigcorbe, V.; Quay, P.; Queroue, F.; Radic, A.; Rauschenberg, S.; Rehkamper, M.; Rember, R.; Remenyi, T.; Resing, J.A.; Rickli, J.; Rigaud, S.; Rijkenberg, M.J.A.; Rintoul, S.; Robinson, L.F.; Roca-Marti, M.; Rodellas, V.; Roeske, T.; Rolison, J.M.; Rosenberg, M.; Roshan, S.; RutgersVan-derLoeff, M.M.; Ryabenko, E.; Saito, M.A.; Salt, L.A.; Sanial, V.; Sarthou, G.; Schallenberg, C.; Schauer, U.; Scher, H.; Schlosser, C.; Schnetger, B.; Scott, P.; Sedwick, P.N.; Semiletov, I.; Shelley, R.; Sherrell, R.M.; Shiller, A.M.; Sigman, D.M.; Singh, S.K.; Slagter, H.A.; Slater, E.; Smethie, W.M.; Snaith, H.; Sohrin, Y.; Sohst, B.; Sonke, J.E.; Speich, S.; Steinfeldt, R.; Stewart, G.; Stichel, T.; Stirling, C.H.; Stutsman, J.; Swarr, G.J.; Swift, J.H.; Thomas, A.; Thorne, K.; Till, C.P.; Till, R.; Townsend, A.T.; Townsend, E.; Tuerena, R.; Twining, B.S.; Vance, D.; Velazquez, S.; Venchiarutti, C.; Villa-Alfageme, M.; Vivancos, S.M.; Voelker, A.H.L.; Wake, B.; Warner, M.J.; Watson, R.; VanWeerlee, E.; Weigand, A.M.; Weinstein, Y.; Weiss, D.; Wisotzki, A.; Woodward, E.M.S.; Wu, J.; Wu, Y.; Wuttig, K.; Wyatt, N.; Xiang, Y.; Xie, R.C.; Xue, Z.; Yoshikawa, H.; Zhang, J.; Zhang, P.; Zhao, Y.; Zheng, L.; Zheng, X.-Y.; Zieringer, M.; Zimmer, L.A.; Ziveri, P.; Zunino, P.; Zurbrick, C. (Elsevier, 2018)
      The GEOTRACES Intermediate Data Product 2017 (IDP2017) is the second publicly available data product of the international GEOTRACES programme, and contains data measured and quality controlled before the end of 2016. The ...
    • Threshold effects in semi-enclosed marine systems 

      Koppel, J. van de; Tett, P.; Naqvi, S.W.A.; Oguz, T.; Perillo, G.M.E.; Rabalais, N.N.; d'Alcalae, M.R.; Su, J.; Zhang, J. (Island Press, 2009)
      The natural history of the twentieth century documents dramatic changes in many ecological systems, mostly due to the influence of the expansion of human civilization. Semi-enclosed marine systems (SEMSs) are no exception ...