Tuesday 7 May 2013

Otter Holt Completion

The second phase of the otter holt build is now complete, and all that is left is to pin the structure down in-case the flood waters rise. The hexagonal, chambered structure was roofed with brash, waste timber and turf to create a non-intrusive holt for any resident otters – Lois, David and Dan are pictured standing outside the holt. A camera-trap was placed near the entrance so any subsequent use can be monitored – check back to the blog to see if the otter’s occupy their fancy new home!
 
In addition, students carried out some water quality testing by ‘kick-sampling’ a gravel riffle and identifying macro-invertebrates found (pictured). Some species are more tolerant of pollution than others, but thankfully clean water indicators including stoneflies were present.
 


 
 

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