Review of the vertebrate-mediated dispersal of the Date Palm, Phoenix dactylifera
2018
Spennemann, Dirk R.
As a major agricultural crop in the semi-arid and arid zone of North Africa and the Middle East, drupes (“fruits”) of the Date Palm Phoenix dactylifera form with their high carbohydrate content of the flesh and oils in the seed a major part of the diet of resident and migratory bird species and fruit bats. This paper reviews the range of known instances of drupe predation by volant and non-volant vertebrate vectors. While documented dispersal distances range from tens of metres to about 50 km, the efficacy of that dispersal has not been assessed in any of the papers under review. While volant animals, primarily birds, make up the greatest number of dispersal vectors and also account for the greatest number of seeds dispersed, long distance dispersal of a larger quantity of seeds per dispersal event seems to rely on terrestrial animals, primarily canids, but also bears and flightless birds, such as the Emu (Dromaius novaehollandiae).
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