Spar trees? LOL, you Brits and your spar trees. So, leaving the top alone is worse for the habitat?
Spar tree is a yank term, its the tree that holds the skyline cable in the air. the tail spar is the tree the skyline is terminated / tied off too.
Leaving the top on would mean it continues to broadcast seed over a wide area, not really what you want when your trying to remove the invasive species from a nature reserve.
I wasn't trying to show off by using the latin name, BTW, I simply couldn't remember what the tree was called in english.
sort of - The ground we are working on is ancient peat bog. Traditionally bogs were drained and planted, but they found that lots of rare species were loosing their habitat as a result. The trees dry out the bog, and its usually your pioneer species that cover the ground Common BirchBetula pendula, and Scots pine Pinus sylvestris