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Module Figure 16 Possible impact pathway diagram for a change in lake water quality
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9-12 December, 2013
Example
CASE EXAMPLE
Potential impacts due to increasing nutrient concentration in the Tubli Bay.
Increases in total nitrogen and phosphorus in the Tubli Bay, as previously described, can
affect ecosystem services and human well-being in the around the Bay. There is the fear that
massive and rapid eutrophication occurred (Al-Sayed et al., 2005), the last was in 2007 due
to those changes in nutrient loads.
The ability of Tubli Bay to provide human food through fish negatively affected because of the
change happened in the numbers and composition of fish species under the high nutrient
levels and the physiochemical altration in the bay ecosystems.
The impact on human well-being can be through changes to the livelihood of local fishers,
degraded recreational opportunities and tourism revenue, as well as human health impacts
through ingestion of water while swimming etc (Abahussain and Alsabbagh, 2009).
58 Integrated Analysis of Environmental Trends and Policies
