Change is the natural order of things. We cannot put the forest on freeze frame. To have a forest with big trees, it is necessary to cut big trees to make room for little trees. Single species management results in creating optimum conditions for one species and ignoring the needs of all other species. An ecosystem cannot be sustained in this way because sooner or later you start to loose some of the parts.
Ecosystems have many different processes, some of which take very long times to come to fruition.
Some of our actions may appear to be inappropriate on short time frames but may be necessary to the long term sustainability of the ecosystem. Some of our actions may appear to be very good in the short term but may inhibit long term processes necessary to a sustainable ecosystem. An example of what I mean by a wild swing is the Dude Fire. This area probably would meet the needs of a functioning ecosystem, biodiversity and sustainability, but it does not provide for continued production of goods and services. On the other hand, we could mimic many of the effects of the fire through timber cutting and thus provide for all four of the New Perspective values and do it on a scale more pleasing to human beings.