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Marine water quality of a densely populated Pacific atoll (Tarawa, Kiribati): cumulative pressures and resulting impacts on ecosystem and human health
Graves, C.A.; Powell, A.; Stone, M.; Redfern, F.; Biko, T.; Devlin, M. (2021). Marine water quality of a densely populated Pacific atoll (Tarawa, Kiribati): cumulative pressures and resulting impacts on ecosystem and human health. Mar. Pollut. Bull. 163: 111951. https://dx.doi.org/10.1016/j.marpolbul.2020.111951
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, more
Peer reviewed article  

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Keywords
    Vibrio Pacini, 1854 [WoRMS]
    Marine/Coastal
Author keywords
    Coastal pollution; Monitoring; Eutrophication; Faecal contamination; Antimicrobial resistance (AMR); Vibrio

Authors  Top 
  • Graves, C.A.
  • Powell, A.
  • Stone, M.
  • Redfern, F.
  • Biko, T.
  • Devlin, M.

Abstract
    The resilience of coastal ecosystems and communities to poor environmental and health outcomes is threatened by cumulative anthropogenic pressures. In Kiribati, a developing Pacific Island country where human activities are closely connected with the ocean, both people and environment are particularly vulnerable to coastal pollution. We present a survey of environmental and human health water quality parameters around urban South Tarawa, and an overview of their impacts on the semi-enclosed atoll. Tarawa has significant water quality issues and decisions to guide improvements are hindered by a persistent lack of appropriate and sufficient observations. Our snapshot assessment identifies highest risk locations related to chronic focused and diffuse pollution inputs, and where mixing and dilution with ocean water is restricted. We demonstrate the importance of monitoring in the context of rapidly changing pressures. Our recommendations are relevant to other atoll ecosystems where land-based activities and ocean health are tightly interlinked.

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