Tropical Asian mega-delta ponds:Important and threatened socio-ecological systems

Moorhouse, H.L. and Roberts, L.R. and McGowan, S. and Panizzo, V.N. and Barker, P. and Salehin, M. and Do, T.N. and Nguyen Thanh, P. and Rahman, M.F. and Ghosh, T. and Das, S. and Hackney, C. and Salgado, J. and Roy, M. and Opel, A. and Henderson, A.C.G. and Large, A.R.G. (2021) Tropical Asian mega-delta ponds:Important and threatened socio-ecological systems. Geo: Geography and Environment, 8 (2).

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Abstract

This paper uses multimedia to showcase the narratives and lived experiences of those who live and work in tropical Asian mega-deltas, and as such is the first journal article of its kind in the field of Regional Geography. Using videos, photography and audio this paper describes the characteristics of ponds and their place in the intrinsically connected human-environmental fabric of these delta regions. The aim is to bring to life descriptive inventories and provide greater weight in support of our conclusion that tropical Asian mega-delta ponds are important and threatened systems. River deltas comprise just 1% of land cover worldwide but support the livelihoods of more than 500 million people. Delta research has historically focused on the major river channels and the socio-ecological role of ponds has been overlooked despite their large number and surface area. Ponds are intrinsically linked to daily life (potable water, sanitation, bathing, washing), industry (aquaculture, agriculture) and the natural-cultural heritage (religion, folklore) of deltas. In contrast to the larger river channels, ponds are likely to be significant stores and processors of nutrients, including carbon, and pollutants at annual to decadal scales, on account of their heavy anthropogenic use and smaller individual sizes. Consequently, they are severely polluted water sources and pose significant public health risks. In this review, we use case studies from three Asian mega-deltas (the Red River Delta and the Mekong River Delta, Vietnam, and the Ganges-Brahmaputra-Meghna Delta, India and Bangladesh) to highlight the importance of Asian mega-delta ponds as important socio-ecological systems in their own right. We discuss future environmental challenges, knowledge gaps on the ecological function and biodiversity of these habitats, management and policy practices, and the capacity of ponds to achieve the UN Sustainable Development Goals. The information, practices and views in this article are those of the author(s) and do not necessarily reflect the opinion of the Royal Geographical Society (with IBG).

Item Type:
Journal Article
Journal or Publication Title:
Geo: Geography and Environment
ID Code:
164183
Deposited By:
Deposited On:
06 Jan 2022 15:05
Refereed?:
Yes
Published?:
Published
Last Modified:
18 Jan 2022 06:54