To gauge impact of nitrogen pollution, Sri Lanka project looks to lichens

Mongabay
May 6, 2022, 4:18 am347 pts
COLOMBO — When a study published in January flagged the risks to Himalayan forests from excessive atmospheric nitrogen pollution, it relied on an often-overlooked member of the ecosystem to assess the level of the threat: lichens. A composite organism of algae and fungi, lichens, like plants, need nitrogen in…

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