What a tree! Perspective is nice though. We need a bunch of these beauties, to show our kids what they can be, but a really mature redwood forest is almost barren of wildlife and other plant species.
Redwood tree's have a way of directing rain downward to their own roots, (leaving the other area's rather dry), and the thick duff they drop to the forest floor, inhibits other plants from growing.
The herbivores leave, because there is so little food for them. The birds leave because the plants and the seeds they eat - even the worms - are more scarce or harder to find. The predators leave because their prey has left.
That's why the Indians burned the forests, periodically. If it wouldn't burn, they had to move on, or get other food to supplement the lean pickings available in the forest.
You don't want to do a survival course in a mature growth Redwood forest. There's very little to eat. Water is no problem, but food is. Here's a documentary on one outdoorsman, that tried it, in the Canadian wilderness:
http://www.fastpasstv.com/tv/alone-in-the-wild/
In a mature coniferous forest.
Mature evergreen forests are nice, but they aren't the epitome of Mother Earth at her most bountiful - far from it.