
Conservation trainee Josie stood with a chainsaw
After all of the trainees successfully passed the crosscutting and chainsaw maintenance assessment, we looked forward to our next challenge - preparing for our small felling assessment.
In small felling, you cut trees that are below 380mm. With Andy B, we began our preparation by running through how to do a standard cut that are used on straight trees, along with getting to grips with the various names for cuts (gob/face cut, back cut...). After running through some theory, it was time to put our newly acquired knowledge into practice. To start, we assessed trees for lean, weight or any dead wood and hanging broken branches before felling – a great opportunity to hone our tree assessment skills! We practiced our cuts on long logs strapped to stumps before advancing to felling an area of birch trees that are to be halo thinned. Halo thinning consists of selecting a well-established, mature tree and felling some of the younger trees around it. This allows the kept tree, which is already providing great habitat for wildlife, to grow better due to less competition from neighbouring trees. In addition, where we were felling was a very dense area and therefore these trees were shading out a lot of the understory. By thinning the canopy, more light will reach the woodland floor, which will allow not only mature trees but also ground flora to thrive.
What do we do with the felled material? In this case, squirrel damage in the birch canopies meant that the trees were no good for timber. Instead, this material will stay in the woods to do its thing for wildlife. For example, brash matts will help to reduce deer feeding on the valuable flora growing underneath. These logs also offer deadwood habitat, which will soon be used by bugs for shelter and, over time, nutrients from the logs will be reabsorbed by the soil.