Articles on Ecology

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Tree canopy like in this Wyoming forest affects stream flow, the climate and life on land. Elyna Grapstein/BLM

Ancient forests took 100,000 years to recover from the last global warming period similar to today – Wyoming fossils reveal what happened

Understanding what happened in these forests 56 million years ago may help humanity recognize similar thresholds before we cross them again, the lead author of a new study writes.
Chinook salmon try to jump a closed gate at a fish hatchery. Supercaliphotolistic/iStock Images Plus via Getty Images

California’s salmon fishery is reopening after a population crash led to a 3‑year closure, but that doesn’t mean all is well

Salmon have faced a boom-bust cycle for years. Making their recovery last longer will require some big changes, including how hatcheries produce fish.
Don’t mess with my territory. Male northern parulas sing and get physically aggressive when intruders invade their space. Pranav Gokhale

It’s a sing‑off! Myth‑busting about birds and sex when it comes to defending the nest

Males aren’t the only angry birds defending their territory. A clever test finds which songbirds step up to fight off intruders and the role monogamy plays.

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