MSc Aquatic Ecosystem Management 2004

 

 

Sustainable Catchment Management: comparing urbanised with semi-pristine catchments

Site Pictures 2: Creran Catchment

Click on the thumbnails for a full-scale picture

The river Creran lies on the west coast of Scotland, between Oban and Fort William, in the Appin area.

 
 

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The catchment is sparsely populated, a major part of it being mountainous.

The flatter parts of the strath are in agricultural use..
but futher up the catchment the ground is wet and boggy, with birch scrub.
There is some mixed deciduous woodland and some conifer plantation, as well as some native Scots pine on the slopes


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The party set out from the main road bridge, where the river is still tidal,
and walked up the course of the River Creran

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There is a track alongside most of the flatter section of the river 
The first sampling point is the bridge at Taraphocain
Too many people at that end!
View from the bridge

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Sampling strategy was discussed;
Invertebrate (kick) samples were taken.
Filamentous algae cover many of the stones with a green film. 3 smaller stones were collected from each site for chlorophyll analysis.
A small tributary of the river Creran was also sampled




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Gary gets the boot in again
Marginal vegetation along the river bank
This is a main tribuary of the river. The river Ure drains a very mountainous part of the catchment, but this section is near the farm at Glenure




Looking downstream
Potential source of nutrients?
Glenure farm is on flat ground dissected by numerous ditches

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The final sample is of the main river again:
Kick sampling,
dissolved oxygen readings,
water samples taken for nutrients and chlorophyll,

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and flow velocity was measured,
and the readings recorded: these people are working really hard. 
Wildlife spotted included buzzards and these deer. There are also red squirrels, pine marten and otter in the area
Adjacent to the mouth of the river is a nature reserve



Most of the party were quite glad to reach the end of the walk,
and settled down happily in the minibus,
but a few minutes later the bus was very quiet...