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International Research Collaborations


International Research Collaborations:

1. Department of International Development (DFID):      ICZOMAT Programme

     The Department of International Development (DFID), United Kingdom, has sanctioned the "Integrated Coastal Management Training" project to IOM in the year 1999. For this purpose, the DFID has allocated £ 810,850 (Rs.550 lakhs) from the bilateral TC funds for a four-year period (1999-2003). The main purpose of this project is to establish the capability to train key Indian personnel in Integrated Coastal Management (ICM) and the capacity to provide relevant advice to GOI on ICM issues. The goal of this programme is to achieve habitat conservation and sustainable use of coastal resources in India during the past two years. Already IOM has trained more than 30 senior level government officers from various maritime states of India. The first phase of the training was conducted at the University of Newcastle, U.K and the second phase of training was conducted at Institute for Ocean Management, Anna University.

Erossion and Accretion Zones of the North Chennai Coast:

Ersoion and Accretion in North Chennai Coast

     The Ministry of Environment and Forests, Government of India is coordinating this programme. Integrated Coastal Management (ICM) is based on a rapidly evolving set of concepts, principles and decision support tools designed to provide guidance for the planning and management of human activities in coastal areas. The module examines the objectives, concepts and principles of ICM, and the available guidelines and associated tools for use in integrating social economic and environmental factors into the successful implementation of ICM initiatives with emphasis on Indian ICM.

Aims:

  •  To assess critically the objectives, concepts, principles and practice  of  ICM and their use in the assessment of options for sustainable use  of  coastal ecosystems and their resources.

  •  To gain an understanding of the planning and management of human  activities seeking to utilize coastal locations and resources.

  •  To emphasize the contribution of Economics, Law and Sociology, in  supporting the ICM process.
Intended Knowledge Outcome:
     Participants would have gained an understanding of the principles and concepts of integrated management of coastal areas, and the economic, legal, environmental, physical, biological and sociological framework of coastal area management. By means of a variety of lectures and group discussions, participants will gain insights into the potential areas of conflict between stakeholders and the role that integrated management may play in solving conflicts and promoting sustainable use of coastal resources.

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 2.  Indo-UK Link Project on "Management of Coastal      Environment in North Chennai, Tamil Nadu for      livelihood security of coastal communities"

     Lagoons provide nursery and breeding grounds for many species of marine fauna. Pulicat Lake, which is a backwater lagoon, serves as a nursery for fish and prawns and supports commercial fishing with major fish landing centers at Pulicat and Arambakkam. Recently lagoons of this type are experiencing an accelerated decline in water quality & siltation and a possible solution to this has been the focus of an integrated approach for the cause and effects of this degradation. Approximately more than one lakh people depend on the Pulicat Lake ecosystem. This study has focused on the social aspects for the sustainable livelihood security of the fishing communities through the INDO-UK link program by transferring the social policies developed by the UK collaborators through the Indian collaborators.
             During the first year (April 2001- March 2002), primary data such as socio-economic status, secondary data on demography of Pulicat Lake and activity impact analyses and land use pattern of Pulicat Lake. The second year of the project is currently underway. Research outputs in the first year of the UK-Link Programme have achieved the identification of the key environmental and social problems facing the North Chennai coast. Preliminary base training of appropriate stakeholders and coastal managers has built capacity for accumulating ICM skills enabling local managers to formulate Integrated Coastal Zone Management for this region.

Influence of the Ennore Thermal Power Plant:

Influence of the Ennore Thermal plant on the surface water temperature of Ennore Creek

     The next stage to the development of improved coastal management is the further development of integrated framework for ICM using both proposed and previous research outputs that considers social, economic, political, cultural and environmental influences on sustainable resource management of the area. This can only be achieved through the formulation and activation of an interdisciplinary team of scientists working alongside local stakeholders and policy makers. The collaboration between the Universities in the UK and India has made much headway in achieving such team dynamics, however further research is needed in order to breakdown barriers between policy makers, academia and stakeholders in order to facilitate understanding of the problems on the Chennai coast.

Future research objectives are to:

  •  Identify optimal methods for the dissemination of research findings  about the problems at the Chennai coast and to gain wider input of  appropriate management strategies that are required which will be  achieved through improving research results dissemination,  communication and discussion between stakeholder groups, NGOs,  involved academic institutions and key policy makers of that area.

  •   Identify gaps in knowledge and expertise at all levels of coastal   management application in that area.

  •  Identify barriers to develop an integrated approach to reduce knowledge gaps
     Reaching these objectives will provide the basis on which effective implementation of developed coastal management options can be built. Development of an ICM framework for the North Chennai coast is an ongoing initiative between the UK and India and currently ICZM is being developed using existing models, including the ICMAM coastal management plan for Chennai City.
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3. Volkswagen Research Project on "Methane Cycling in     Tropical Mangrove Ecosystems of India"

Funding Agency : Volkswagen Foundation, Hannover, Germany
Amount : DM. 100,000 (Approx. Rs. 20.00 Lakhs)
Duration : April 1998 - June 2001

Background:

     The research project on "Methane cycling in tropical mangrove ecosystems of India", funded by the Volkswagen Research Foundation, was started in April 1998 for a period of two years. The achievements and advantages of the collaboration between the Max-Planck-Institut für terrestrische Mikrobiology, Marburg, Germany and the Institute for Ocean Management, Anna University is dealt with individually below.
   India, being a dominant rice growing country in Asia, was believed to emit significant quantities of methane (CH4) to the atmosphere. Based on this, the Indian National IGBP initiated a "Methane Campaign" to quantify the actual emission characteristics from rice paddy in India. Their aim was to quantify the basic fluxes of CH4 to the atmosphere. On the other hand, natural wetlands, which are particularly known for high CH4 emissivity characteristics were less studied and understood. For the first time in India, coastal wetlands were studied for their CH4 emission characteristics. Being salt-dominant wetlands, one would expect low or no emission scenario from these coastal wetlands. The emission of such greenhouse gases almost doubled due to the higher temperature regimes in the tropics, in addition to severe anthropogenic stress. It is important to state that CH4 flux is a difference between the total CH4 produced and that oxidized. The flux measurements in general has a very little predictive power as far as the emission scenario is concerned and this project was designed in such way that process-oriented studies was the primary foci of this research work, as shown diagrammatically below.

Methane Campaign


     The group at Anna University made extensive seasonal and monthly collection of samples from the mangrove area and analysis of parameters identified for this project was made on a regular basis.
These include:
  • Flux measurements in the three different salinity zone.
  • Estimation of CH4 concentration from Gas bubbles and the pneumatophores.
  • Quantification of CH4 production rates in a vertical sediment profile (ca. 24 cm).
  • In vitro oxidation and production measurement of mangrove roots (cable root, fine root, Pneumatophores)(above water level and below water level).
  • Inhibition of production using Bromoethane sulfonic acid. Water and sediment physical and chemical characteristics, which include analysis of sulfate, salinity, sediment organic matter content etc.
  • Sequential reduction of Fe in mangrove sediment.
  • Estimation of rooting depth in different salinity zones of the mangrove ecosystem

     Apart from these routine measurements, specialized analyses were made at the Max-Planck-Institut fur terrestrische Mikrobiologie, Marburg during our exchange visits. Experiment on the effect of trimethyl amine (TMA) on these coastal sediments was successfully performed. These aspects were very critical in understanding the major processes involved in the production and emission of methane to the atmosphere.
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4. NERC Research Project on "Nitrification, Denitrification     and  Nitrous Oxide in Indian Mangrove Ecosystems"

Funding Agency : Natural Environmental Research Council, (NERC), U.K.
Amount : £ 275,000 (~2.0 Crores)
Duration : September 2002 - August 2005

     Nitrous oxide (N2O) is an important climatically active trace gas whose tropospheric concentration is currently growing at about 0.3 % yr-1, with implications for future global temperatures and stratospheric ozone. Known global sources are several but their combined magnitude cannot account for the observed tropospheric growth, implying the existence of additional unknown N2O sources. Soils and the oceans are the largest of the currently recognised tropospheric N2O sources and for both; microbially mediated nitrification and denitrification contribute to net N2O production. Current data indicate that tropical soils and coastal seas are particularly important sites in this respect but relevant data are few and for the latter are dominated by studies in temperate latitudes. Regions likely to make a disproportionately large contribution to the coastal N2O source are the mangroves that dominate tropical coasts and are an interface between N-rich tropical soils and coastal seas. Mangroves are very sensitive to global change and anthropogenic disturbance is linked to enhanced N cycling, with the clear implication of increased N2O fluxes. Therefore, accurate projections of tropospheric N2O growth may be problematic in the absence of relevant data from both pristine and anthropogenically impacted mangrove sites. The need to improve our understanding of mangrove N cycling and to evaluate its contribution to the global flux of tropospheric N2O is therefore paramount and should be a high research priority.
     We will examine the mangrove contribution to global N2O using detailed studies of N fluxes, nitrification and denitrification rates and associated N2O production and atmospheric flux at carefully selected contrasting mangrove sites. Using these data we will develop a generic model of mangrove N cycling and N2O flux that should be of value in aiding future predictions of tropospheric N2O growth. These outputs will allow identification of the climatic consequences of mangrove exploitation, information that will aid strategies for sustainable coastal development.

Approach to the Project and Specific Scientific Objectives:
     We propose to study the N biogeochemistry and to quantify the resultant atmospheric N2O fluxes at selected tropical mangrove sites around the Bay of Bengal, principally along the East Coast of India. Our rationale for selecting this region has several aspects. It is globally significant, accounting for more than 7% of the global mangrove area. A consequence of this is that a diversity of mangrove sites can be readily identified, ranging from pristine to heavily anthropogenically impacted and hence involving a spectrum of DIN inputs, both in terms of quality and quantity. In these respects the region can be considered a microcosm of mangrove environments worldwide. Our overarching hypothesis is that tropical mangroves are globally important sites of N cycling, the implications of which involve both the modification of inorganic N fluxes to coastal waters and the production and atmospheric flux of climatically active N2O. These implications are disproportionate to the geographic extent of mangroves and are likely exacerbated by anthropogenic activities including direct nutrient discharges and changes in land management strategy. By specifically focusing on DIN fluxes, rates of nitrification and denitrification and associated N2O production and atmospheric flux at carefully selected contrasting sites, we hope to develop a generic model of nitrogen cycling in mangroves. In doing so we should begin to more adequately appreciate their contribution to the global N cycle and climate.

Typical nutrient source
     Using such knowledge it should be possible to predict the consequences of continued mangrove exploitation and to incorporate this into strategies for sustainable coastal management.

Within this context we identify the following specific scientific objectives:
  •  To use a grid survey approach to make large spatial scale estimates of  seasonal DIN inputs and distribution and of nitrification and  denitrification rates and dissolved N2O concentrations in four (pristine  and anthropogenically impacted) mangrove ecosystems along the E.  coast of India and in the Andaman & Nicobar islands (Bay of Bengal).

  •  To use the output from objective 1 and to identify specific sampling  sites for detailed seasonal measurements of DIN concentrations and  fluxes, nitrification / denitrification rates, dissolved N2O concentrations  and N2O atmospheric fluxes.

  •  To use objective 1 and 2 outputs to construct and calibrate a coupled  hydrodynamic/mass transport model to simulate nitrification,  denitrification and N2O production and flux for tropical mangrove  systems.

  • To exploit the model outputs to evaluate the tropical mangrove contribution to global N2O, to examine its future evolution in response to global environmental change and to facilitate formulation of these outputs into sustainable strategies for coastal management.

Relevance to NERC Mission: National and International needs, achievements and outputs
    This work is relevant to key areas of NERC scientific strategy identified as priorities. It will directly address biogeochemical fluxes (i.e. N) between the terrestrial, oceanic and atmospheric reservoirs and examine the role of anthropogenic perturbation in such interactions.

 Relavencce to NERC  Mission


There are clear implications regarding the impact of the coupled ocean-atmosphere physical and biogeochemical system on climate and other aspects of global change, both natural and anthropogenic. The study will also contribute to developing debates on the sustainable management of coastal resources, including the implications of accelerated nutrient fluxes through human intervention. Hence there is a strong international relevance in the context of both the IGBP IGAC and LOICZ programmes and the emerging international and UK SOLAS initiatives.
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5. DST-DAAD Research Project on "Assessment of Pollutant Loadings on River Adyar and River Elbe and their    Environmental Impacts"

Funding Agency : Deutscher Akademischer Austauschdienst (DAAD), Germany & Department of Science and Technology, India
Amount : DM. 40,000 (Approx. 8 Lakhs)
Duration : April 2001 - March 2003

     The impact of urban pollution on river and groundwater quality is the primary foci of this research work.

Assessment of Pollutant loading

The Adyar River flows through the city of Chennai (Madras), India for a distance of 14 km, before it joins the Bay of Bengal. The total length of the river is 40 km with a water-spread area of 850 km2. Urban pollution, mainly contributed by wastewater disposal from within the city limits and industrial effluents enter the river through several outlets. We studied the river surface water and the adjacent groundwater quality with reference to pollution by organic wastes, trace metals and other major elements. We have identified and quantified "system controls" and "import-export dynamics" in addition to estimating the effects of pollution and its possible feedback on the Adyar river system.

We have identified the following to be the principal sources of urban pollution causing degradation to the river system:

  •  Domestic wastes from urban settlements.
  •  Heavy metals and chemicals from industrial sources.
  •  High suspended solids from domestic sources.
  •  Nutrients and organic matter load from industries and other land-based  activities.
  •  High pathological content from hospital wastes.
  •  Stagnation of the water body due to sand bar formation and lack of  freshwater inflow.
  •  Minimized tidal fluxes.
Thus, as it can be observed from the results, there has been a continuous degradation in the riverine environment mainly due to increasing population and encroachments on the banks of the River Adyar. Attempts are being made to model (MODFLOW) the river and groundwater flow, pollutant migration and their changes over a period of time using primary and secondary data.

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6.  International Foundation for Science Research Project on  "Aquaculture Site Selection in Tamil Nadu Coast through GIS and Remote Sensing"

Funding Agency : International Foundation for Science, Sweden
Amount : SEK 70,000 Swedish Crowns
Duration : April 1993 - March 1995

     This study was designed to demonstrate that the date collected from diverse sources such as land use, geomorphology, drainage, water quality, soil physical and chemical factors, meteorology, and socioeconomic data can be compiled and merged in a Geographic Information System (GIS). An integration of all these parameters is interpreted to evaluate opportunities for aquaculture development in terms of the most promising locations. In other words, GIS and remote sensing are applied to demonstrate and quickly identify the locations, which are suitable, marginal or unsuitable for aquaculture development in two sites viz., Vedaranyam and Tuticorin in Tamil Nadu. Based on the integration of ground truth and laboratory analyses of water and sediment properties with various thematic maps and other logistic parameters, an area of 34 km2 and 27 km2 have been found to be highly suitable for brackish water aquaculture in the Vedaranyam and Tuticorin areas respectively. Suggestions for promoting environmentally sound aquaculture in wastelands and protecting the ecologically sensitive areas from aquaculture development is highlighted.

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