Vernal pool flowers, with different species occurring in bands related to soil moisture and temperature gradients formed as the pool dries out. Sacramento National Wildlife Refuge, Calif.
Obtained from
http://geochange.er.usgs.gov/sw/impacts/biology/vernal/
Vernal pool flowers, with different species occurring in bands related to soil moisture and temperature gradients formed as the pool dries out. Sacramento National Wildlife Refuge, Calif.<br> Obtained from http://geochange.er.usgs.gov/sw/impacts/biology/v
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