Tag: Tumamoc Hill

Conceptual illustration of a Sonoran Desert hillside after rain, with scattered seedlings above a cutaway of soil containing dormant seeds and a few germinating seeds with roots. Seeds are enlarged to make the hidden seed bank visible; saguaros and mountains stand in the background.

Why Don’t All Desert Seeds Wake Up When It Rains?

Desert annual seeds can remain dormant even after good rain. Experiments and long-term models show why spreading germination across years can pay.

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