Abstract
The growth of brackish water aquaculture globally and in India is driven by a discourse that naturalizes salinity and sees aquaculture as an alternate livelihood and a good source of food and nutrition in coastal areas. In this paper, we take issue with such a discourse and argue in particular that brackish water shrimp aquaculture is as much a cause of increased salinity as it is a response to it. We also highlight, through a case study of two villages in south India, that aquaculture farmers are relatively influential in political and economic capital and are mostly not small farmers. The paper further claims the growth of shrimp farms in the region has resulted in a declining area under productivity of paddy cultivation and pollution of fishing grounds and drinking water as well. Our findings suggest the need for policy makers to take a more critical look at brackish water aquaculture and the possible irreversible costs that they might have on coastal lands and rural livelihoods.
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Notes
We use the terms aquaculture, brackish water aquaculture and brackish water shrimp aquaculture. Aquaculture includes fresh water aquaculture, brackish water aquaculture and mariculture, and brackish water shrimp aquaculture is a subset of brackish water aquaculture.
Our use of the word “natural” here is to highlight policy makers’ assumption that since coastal areas are saline, it is only logical (or natural) to promote brackish water aquaculture.
In India, development activities in the coastal zone are regulated by the Coastal Zone Regulation (CRZ) notification which has been amended and redrawn on a number of occasions since its first enactment in 1991. The original notification emphasized the precautionary principle with regard to allowing industrial activities in the coastal zone (upto 500 ms from the High Tide Line (HTL).
The search for wild seed or brood stock can result in by-catch.
The first author met scientists at CIBA on February 23, 2021.
This is the last year for which official population data is available.
In India and Tamil Nadu, caste is an important social category. Castes are divided into SCs, STs, backward castes (BCs), most backward castes (MBCs), and forward castes (FCs). BCs, OBCs, SCs, and STs are the socially disadvantaged castes. SCs or Dalits are the most excluded and in Tamil Nadu often inhabit separate “colonies.” STs are Adivasis or tribals. While Vanniyars are MBCs, they often own considerable amounts of agricultural land.
Crops cultivated by canal irrigation water will have a minimum concentration of salt in them. Crops use up the irrigated water in the process of evapo-transpiration and leave behind salt in their roots. However, this negligible amount of salt is removed by the process of leaching wherein the salts are leached into the soil by addition of fresh water.
There are 2.47 acres to a hectare. Hectare is the unit used more commonly, for example to classify farmers as marginal, small etc. However, farmers provided details in acres.
By this, we mean that choices about livelihoods and meeting basic needs are influenced by the salinity of water and land.
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Acknowledgements
We would like to thank all the people in Pichavaram and T.S. Pettai who found time to discuss at length with us regarding the growth of aquaculture in the region. Thanks are also due to Ragulkanth G. and team for preparing the maps and figures. Finally, we benefited from discussions with our colleagues and friends within the FISHERCOAST team.
Funding
The research was funded by the Agence Nationale de Recherche (ANR) and the Indian Council for Social Science Research (ICSSR) via the Economic and Social Science Research Council (ESRC) and the EU-India Platform for Social Sciences and Humanities (EqUIP) Program (ES/R010404/1) in the frame of the FISHERCOAST project (Coastal Transformation in Fisher Wellbeing- Synthesized Perspective for India and Europe).
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Menon, A., A. S., A., K., N. et al. Salinizing livelihoods: the political ecology of brackish water shrimp aquaculture in South India. Maritime Studies 22, 6 (2023). https://doi.org/10.1007/s40152-023-00294-5
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DOI: https://doi.org/10.1007/s40152-023-00294-5