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Assessing the ecological impact of banana farms on water quality using aquatic macroinvertebrate community composition

Svensson, Ola; Bellamy, Angelina Sanderson; Van den Brink, Paul J.; Tedengren, Michael; Gunnarsson, Jonas S.

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Authors

Ola Svensson

Paul J. Van den Brink

Michael Tedengren

Jonas S. Gunnarsson



Abstract

In Costa Rica, considerable effort goes to conservation and protection of biodiversity, while at the same time agricultural pesticide use is among the highest in the world. Several protected areas, some being wetlands or marine reserves, are situated downstream large-scale banana farms, with an average of 57 pesticide applications per year. The banana industry is increasingly aware of the need to reduce their negative environmental impact, but few ecological field studies have been made to evaluate the efficiency of proposed mitigation strategies. This study compared the composition of benthic macroinvertebrate communities up- and downstream effluent water from banana farms in order to assess whether benthic invertebrate community structure can be used to detect environmental impact of banana farming, and thereby usable to assess improvements in management practises. Aquatic invertebrate samples were collected at 13 sites, using kick-net sampling, both up- and downstream banana farms in fast flowing streams in the Caribbean zone of Costa Rica. In total, 2888 invertebrate specimens were collected, belonging to 15 orders and 48 families or taxa. The change in community composition was analysed using multivariate statistics. Additionally, a biodiversity index and the Biological Monitoring Working Party (BMWP) score system was applied along with a number of community composition descriptors. Multivariate analyses indicated that surface waters immediately up- and downstream large-scale banana farms have different macroinvertebrate community compositions with the most evident differences being higher dominance by a single taxa and a much higher total abundance, mostly of that same taxon. Assessment of macroinvertebrate community composition thus appears to be a viable approach to detect negative impact from chemical-intensive agriculture and could become an effective means to monitor the efficacy of changes/proposed improvements in farming practises in Costa Rica and similar systems.

Journal Article Type Article
Acceptance Date Dec 12, 2016
Online Publication Date Jan 23, 2017
Publication Date May 1, 2018
Deposit Date May 28, 2021
Publicly Available Date May 28, 2021
Journal Environmental Science and Pollution Research
Print ISSN 0944-1344
Electronic ISSN 1614-7499
Publisher Springer (part of Springer Nature)
Peer Reviewed Peer Reviewed
Volume 25
Issue 14
Pages 13373-13381
DOI https://doi.org/10.1007/s11356-016-8248-y
Public URL https://uwe-repository.worktribe.com/output/7197601

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