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Improving lake water quality in Slapton Ley National Nature Reserve, South Devon, UK: amelioration by wetlands or drainage basin source management?
Research output: Contribution in Book/Report/Proceedings › Conference contribution
Published
| Publication date | 1997 |
|---|---|
| Host publication | Freshwater contamination: International symposium of the Fifth Scientific Assembly of the International Association of Hydrological Sciences |
| Place of publication | Rabat, Morocco |
| Publisher | International Association of Hydrological Sciences |
| Pages | 299-311 |
| Number of pages | 13 |
| Volume | 243 |
| ISBN (Print) | 1-901502-20-1 |
| Original language | English |
Abstract
The efficiency of wetlands in reducing nutrient and sediment
concentrations in runoff from agricultural areas can be used as an argument
for not tackling nutrient and sediment losses at source within the basin.
However, evidence from the Slapton basin shows that this efficiency varies
seasonally and is much less marked in the winter than in the summer,
pointing to the need for basin management during winter flows. In addition,
while wetlands may reduce nutrient and sediment concentrations, thus
improving downstream water quality, the accumulation of nutrients and
sediments in the wetland can lead to progressive eutrophication and, in
addition, terrestrialization of valued wetland habitats, further reinforcing the
need for basin source control.
concentrations in runoff from agricultural areas can be used as an argument
for not tackling nutrient and sediment losses at source within the basin.
However, evidence from the Slapton basin shows that this efficiency varies
seasonally and is much less marked in the winter than in the summer,
pointing to the need for basin management during winter flows. In addition,
while wetlands may reduce nutrient and sediment concentrations, thus
improving downstream water quality, the accumulation of nutrients and
sediments in the wetland can lead to progressive eutrophication and, in
addition, terrestrialization of valued wetland habitats, further reinforcing the
need for basin source control.