In reply to Saor Alba:
Yup, no problem, I've had a look at it and read through the thread. You've asked me a short question with only a long answer and even that will be incomplete.
My history is that I spent 4 years at Mar Lodge Estate as a ghillie, and spent four long summers there and two winters at the hinds. It was a great time, where my love for the hills deepened and I saw them in a different way from that I had before. While every time I go there, I feel like I am at home; I also had to face troubling thoughts and situations that led me to think of land ownership in different ways.
At Mar Lodge in my time, the 1980s to 1990's, we shot 300 stags and 500 hinds and calves each year. The deer population grew steadily and herds of 500 stags in summer and early autumn were commonly seen. This is a fantastic sight to behold when they are still, but to see them running took the breath away. However, there was no new tree growth and as we've known since Frank Fraser Darling's time the hill environment was almost sterile, so denuded was it. We did winter feed our deer at that time and this helped to keep the deer population healthier. I was lucky to work with stalkers who appreciated that selective culling was proper, and I never worked in a place where any stag was shot, despite inducements of huge financial reward from guests who wanted to take a "trophy" home. My diaries of that time reveal that on the day of the sale from Kluge to the National Trust, I walked over Creag Bhalg and saw golden eagles, buzzards, hen harriers, red and black grouse and a plethora of other birds. I saw huge herds of deer, we used to call the flat top of Creag Bhalg the rose garden, so many antlers did we see on the stages. I saw no new tree growth except in little fenced off areas.
Now the National Trust owns the estate and the deer numbers have been hammered. the head keeper at Mar Lodge resigned in protest at the drastic culling of the deer, and this was reported in the Shooting Times and the Scottish press. I was in Glen Lui at the weekend, walked up Glen Derry and into the upper reaches of Glen Luibeg. I saw no deer whatsoever, and one buzzard. I did see plenty of new tree growth, Scots Pines, and marvelled at one little island in the Lui that was festooned with new Scots Pines. I don't know how to include the link to my flickr site to show a picture of that little island.
I really like that in 50 years or so, the environment of those glens will be transformed. I get the feeling that the empty acres of heather and stones of the last fifty, hundred years will be changed to healthy, new forest of trees. But, I worry about the access to the Cairngorms and the freedom of people to go where and when they like. I wonder what the people who do there will see. The National Trust has clearly decided that deer numbers had to be dramatically reduced. I wonder how long before they decide that the numbers of human visitors also has to be dramatically reduced. This leads to the age old debate about a community's access to land belonging to someone else which is part of all ours community. I wonder how long before we need to buy tickets to go to the southern Cairngorms, dressed up as protection of the land.
Where I lived, a large portion of that population was employed by the estates. Most were involved in forestry and only a few in deerstalking. The rest of the population depended on tourism for their income. My worry is that owners like the NTS will create better environments, with fewer people living there and fewer amenities so that the areas truly become parks with dependent facilities only during the tourist season.
So a long answer to a short question. It is clear from my experience that significantly reducing the number of deer allows real regeneration of the environment. The question of what happens next needs considered now too. My preference is for local communities to own their land and decide how they want to go forward with this precious resource that they will ever only hold in trust for their children and grandchildren.