Believe it or not, 99.9% of the species on Earth have gone extinct. Now, not all of these were caused by Humans, some were caused by MAJOR cataclysmic events such as the extinction of dinosaurs or other prehistoric animals that make up a large amount of the species on Earth. And remember that all the prehistoric plants are also included, because every plant organism is ALSO a species.
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Deforestation is one major concern with harvesting wood. There are also all types of organisms that lose their habitats.
It's likely to have a Solid Grey color.
If there where a decrease in the number of decomposers there would be a increase in the number of producers and consumers.