USGS - Science for a changing world

Timing is Everything: Understanding Natural Cycles ts

This Science Feature can be found at: http://www.usgs.gov/blogs/features/usgs_top_story/timing-is-everything-understanding-natural-cycles/
salmon

Salmon swimming in a river.

The timing of animal migration and reproduction, and observing when plants send out new leaves and bear fruit, is increasingly important in understanding how climate change affects biological and hydrologic systems. Photo credit Copyright C Brandon Cole.

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