Data from: The effect of feeding time on dispersal of Virola seeds by toucans determined from GPS tracking and accelerometers

When using this dataset, please cite the original article.

Kays R, Jansen PA, Knecht EMH, Vohwinkel R, Wikelski R (2011) The effect of feeding time on dispersal of Virola seeds by toucans determined from GPS tracking and accelerometers. Acta Oecologica 37(6), 625–631. doi:10.1016/j.actao.2011.06.007

Additionally, please cite the Movebank data package:

Kays R, Jansen PA, Knecht EMH, Vohwinkel R, Wikelski M (2016) Data from: The effect of feeding time on dispersal of Virola seeds by toucans determined from GPS tracking and accelerometers. Movebank Data Repository. doi:10.5441/001/1.f32gn841
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Package Identifier doi:10.5441/001/1.f32gn841  
 
Abstract Seed dispersal is critical to understanding forest dynamics but is hard to study because tracking seeds is difficult. Even for the best-studied dispersal system of the Neotropics, Virola nobilis, the dispersal kernel remains unknown. We combined high-resolution GPS/3D-acceleration bird tracking, seed-retention experiments, and field observations to quantify dispersal of V. nobilis by their principal dispersers, Ramphastos toucans. We inferred feeding events from movement data, and then estimated spatiotemporally explicit seed-dispersal kernels. Wild toucans moved an average of 1.8 km d^-1 with two distinct activity peaks. Seed retention time in captive toucans averaged 25.5 min (range 4-98 min). Estimated seed dispersal distance averaged 144 +/- 147 m, with a 56% likelihood of dispersal >100 m, two times further than the behaviour-naive estimate from the same data. Dispersal was furthest for seeds ingested in the morning, and increased with seed retention time, but only up to 60 min after feeding. Our study supports the long-standing hypothesis that toucans are excellent dispersers of Virola seeds. To maximize seed dispersal distances trees should ripen fruit in the morning when birds move the most, and produce fruits with gut-processing times around 60 min. Our study demonstrates how new tracking technology can yield nuanced seed dispersal kernels for animals that cannot be directly observed.
Keywords accelerometer, animal tracking, chestnut-mandibled toucan, collared aracari, GPS tracking, keel-billed toucan, Myristicaceae, Panama, Pteroglossus torquatus, Ramphastos sulfuratus, Ramphastos swainsonii, regurgitation time, seed dispersal, seed dispersal kernel, Soberanía National Park, Swainson’s toucan, tropical forests, Virola nobilis,

Toucan movement and seed dispersal, Gamboa, Panama (data from Kays et al. 2011)-acc.csv View File Details
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Toucan movement and seed dispersal, Gamboa, Panama (data from Kays et al. 2011)-gps View File Details
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Toucan movement and seed dispersal, Gamboa, Panama (data from Kays et al. 2011)-reference-data View File Details
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