Why Are Cones Serotinous?
Some Tree Species Delay Seed Fall Because Their Cones Are Dependent on a Brief Blast of Heat to Release Seed. This Dependency on Heat During the Seed...
Some tree species delay seed fall because their cones are dependent on a brief blast of heat to release seed. This dependency on heat during the seed production cycle is called "serotiny" and becomes a heat trigger for seed drop that may take decades to occur.
Why are serotinous cones important?
Serotinous cones.
Only when a fire sweeps through, melting the resin, do these heat-dependent cones open up, releasing seeds that are then distributed by wind and gravity. ... Lodgepole pines, ubiquitous across much of the West, are one of the first species to grow after a fire because of their serotinous cones.
What is a serotinous species?
Serotiny is the behaviour of some plant species that retain their non-dormant seeds in a cone or woody fruit for up to several years, but release them after exposure to fire. ... Such survival strategies allow for seeds to be released after fires which signal the clearance of competitor plants from the environment.