I'm a recreational tree climber. The majority of trees I have access to are Sitka Spruce and Doug Fir. I've be scouting out trees in my area to "groom" for climbing and have a question about removing dead limbs. Would there be any adverse effects to the tree if dead limbs are removed? I've attached a picture of a 160' Sitka that I climb regularly and as illustrated, there are an abundance of dead limbs. My intention is to create climbing routes to the upper part of the tree but the ascent is difficult because of a high density of limbs, dead and living. I've already removed several smaller, old limbs (that are more like spears) as the softer outer material of the limb has eroded away leaving the very dense and sappy core of the limb. I don't normally cut any living branches or limbs unless they seem to be causing a wound to another part of the tree. I'd appreciate any comments or insights about this.