Detailed text transcripts for TV channel - DW - 20190506:07:55:00
Six imported varieties for their viability. but the idea of introducing foreign species is a controversial one the douglas fir for example is considered an adequate substitute for the spruce but conservation groups say it reduces biodiversity and carries the risk of becoming invasive concerns that apply for all imported species. forest as stephan filthy guy is aware of that potential threat but the prospect of losing his forest to climate change is in his eyes the greater danger. if we keep an eye on survey results but regenerating the next generation is something that can't wait until the res...
Source: archive.org