for: climate change - impacts, extinction, biodiversity loss, fish kill, salmon dieoff, stats, stats - salmon, logging, human activity

paraphrase

stats

• None of the 28 streams Cunningham and his colleagues studied hit summertime highs warmer than 25.9 C,
• the point where warming water can become lethal.
• But in four rivers, temperatures climbed past 20.3 C,
  • the threshold where some have found juvenile coho stop growing.
• In some watersheds, deforestation rates climbed to 59 per cent.

comment

• deforestation may be a contributing factor but there are also other variables like changes in glacial melt water