Long Term Trends And Seasonal Trends On Phosphorus At The Bosherston Lakes, South West, Wales
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Data analysis of long term trends and seasonal trends in Phosphorus at the Bosherston Lakes, South West, Wales.
The Bosherston Lakes are man- made water bodies own by the National Trust, Stackpole National Nature Reserve and the lakes are made up of four hallow lakes (about -2.5m deep) and is formed by frowning and damming three valleys in the Carboniferous Limestone of coastal Pembrokeshire valleys in the eighteenth and nineteenth centuries. (Overleaf figure 1.). And Bosherston lakes is managed by the National Trust in partnership with the Country Council of Wales and have been classified under the EC Habitat Directive as a Special Area of Conservation (SAC) .(Ree et al., 1991). In (figures 2 overleaf) which shows…show more content… (Davies et al., 1992). The eastern arm which is the largest arm is fed by two (merrion and Stackpole) which drain the sandstone ridge, while the western, central arms and the central lake are fed predominantly by groundwater which flows from the limestone aquifer. And about two third of the catchments is use for gazing while the other is use for arable farming. (Holman and Vale., 2009). And the lakes can be level lowered through evapotranspiration and groundwater which discharge to the sea.
The geology of Pembrokeshire is well known for the coastal display of diversity of rocks and scenery over 250 miles exposure than any equivalent area in Britain. It has ancient landscape which was formed many years ago (290 million) at the end of Carboniferous period. The geological process and action such as river weathering, glaciations and marine erosion on this variety of rock is as a result of diversity of coastal landscape.
To assess and analysis the long term trends and seasonal trends of Phosphorus in relation to the lakes system within the catchments.
Figure 1 Bosherston lakes and lily pond, Stackpole , National Nature Reserve, Pembrokeshire, 2007, Chris Baker
Figure 2 Map, catchments and geology of Pembrokeshire
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