What are the Tundra ecological concerns?

1. Oil and gas development-->global warming: only 6 months left of natural oil; permafrost melts and tundra ecosystems collapse: as permafrost begins to decay, (dead plants) release more carbon dioxide and accelerate global warming

2. Ozone depletion in North/South poles: stronger UV rays destroy tundra

3. Air pollution: poisons lichen, which feeds many animals

4. Buildings and roads: put heat on permafrost and cause it to melt

5. Invasive species: push aside native vegetation and reduce diversity of plant cover

6. Oil spills can kill wild life and significantly damage tundra ecosystems.

Hope this helps