Waves of seed propagation induced by delayed animal dispersion

JOURNAL OF THEORETICAL BIOLOGY

卷:436

Article

Kazimierski, Laila D.^1,2  Kuperman, Marcelo N.^1,2  Wio, Horacio S.^3,4,5,6  Abramson, Guillermo^1,2 

[1] Consejo Nacl Invest Cient & Tecn, Ctr Atom Bariloche, R8402AGP, San Carlos De Bariloche, Rio Negro, Argentina

[2] Inst Balseiro, R8402AGP, San Carlos De Bariloche, Rio Negro, Argentina

[3] UC, Inst Fis Cantabria, Avda Castros S-N, E-39005 Santander, Spain

[4] CSIC, Avda Castros S-N, E-39005 Santander, Spain

[5] UIB, Inst Fis Interdisciplinar & Sistemas Complejos, Campus Univ Illes Balears, E-07122 Palma De Mallorca, Spain

[6] CSIC, Campus Univ Illes Balears, E-07122 Palma De Mallorca, Spain

关键词: Seed dispersal;    Plant animal interaction;    Travelling waves;   

DOI  :  10.1016/j.jtbi.2017.09.030

来源: Elsevier

【 摘 要 】

We study a model of seed dispersal that considers the inclusion of an animal disperser moving diffusively, feeding on fruits and transporting the seeds, which are later deposited and capable of germination. The dynamics depends on several population parameters of growth, decay, harvesting, transport, digestion and germination. In particular, the deposition of transported seeds at places away from their collection sites produces a delay in the dynamics, whose effects are the focus of this work. Analytical and numerical solutions of different simplified scenarios show the existence of travelling waves. The effect of zoochory is apparent in the increase of the velocity of these waves. The results support the hypothesis of the relevance of animal mediated seed dispersion when trying to understand the origin of the high rates of vegetable invasion observed in real systems. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

Free