Theory 84/Coastal & Estuary/Mangroves
Mangroves Stop at Frost
The claim
Mangrove range limits are set by the ratio of frost frequency to propagule supply, so a single cold event can set a boundary that propagules cannot cross.
01Mechanism
Establishment requires propagules to survive to maturity; frost kills them, and supply determines how often the attempt is made.
02Prediction
Range limit should track the ratio.
03Refutation
Range tracking temperature alone would remove supply.