Modify aquaculture practices in watershed to reduce pollution
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
View assessment score
Hide assessment score
How is the evidence assessed?
Background information and definitions
Nutrients from aquaculture stock can spill over into focal marshes or swamps, causing pollution problems. This includes nutrients in excretory products from the animals themselves, as well as in excess food (Dauda et al. 2019). An excess of nutrients in marshes and swamps can affect the plant community composition, plant diversity and distribution of plant species (Verhoeven et al. 2006; Bromberg Gedan et al. 2009). Extreme excesses can cause algal blooms.
This action includes a range of specific management techniques, other than changes in fertilizer or herbicide use, that might reduce pollution in focal marshes or swamps from aquacultural facilities elsewhere in the catchments. These interventions include: completely excluding or removing stock, reducing aquacultural intensity (by reducing frequency and/or degree of stocking), or better management of feed (altering the amount and/or timing).
Related actions: Abandon aquaculture facilities within focal wetlands (freshwater – brackish/saline).
Bromberg Gedan K., Silliman B.R. & Bertness M.D. (2009) Centuries of human-driven change in salt marsh ecosystems. Annual Review of Marine Science, 1, 117–141.
Dauda A., Ajadi A., Tola-Fabunmi A.S. & Akinwole A.O. (2019) Waste production in aquaculture: sources, components and managements in different culture systems. Aquaculture and Fisheries, 4, 81–88.
Verhoeven J.T.A., Arheimer B., Yin C. & Hefting M.M. (2006) Regional and global concerns over wetlands and water quality. Trends in Ecology and Evolution, 21, 96–103.
Where has this evidence come from?
List of journals searched by synopsis
All the journals searched for all synopses
This Action forms part of the Action Synopsis:Marsh and Swamp Conservation
Marsh and Swamp Conservation - Published 2021
Marsh and Swamp Synopsis