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Tundra covers a tenth of the world's land area and is an important ecology, locally and with benefits for the entire world. Around one third of the world's soil-bound carbon is held in the frozen tundra, retaining a huge volume of carbon dioxide that would be released into the atmosphere if the tundra permafrost thaws. The tundra is a fragile environment that can easily be damaged or destroyed. Global warming is the most important threat on a large scale, since this has the potential to melt the ice in the tundra and thus release the carbon dioxide. Another important threat comes from tailings spills and oil spills from mining operations and oil drilling or pipeline leaks. Ozone depletion is gradually damaging tundra plantlife and impacting the already limited biodiversity. Even vehicle tracks and roads can have an inordinate harmful impact on the tundra.

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What are the environmental threats in the arctic tundra?

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What has the author J Todd Kemper written?

J. Todd Kemper has written: 'Vegetation changes on seismic lines from recent (2000-2001) and historic (1970-1986) seismic programs in the Mackenzie Delta area' -- subject(s): Ecology, Environmental aspects, Environmental aspects of Seismic prospecting, Environmental aspects of Tundra plants, Seismic prospecting, Tundra plants