Academic Journal
ORIGINAL PAPER PRUNUS: a spatially explicit demographic model to study plant invasions in stochastic, heterogeneous environments
| العنوان: | ORIGINAL PAPER PRUNUS: a spatially explicit demographic model to study plant invasions in stochastic, heterogeneous environments |
|---|---|
| المؤلفون: | Olivier Goubet, Æ Guillaume Decocq |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://www.mathinfo.u-picardie.fr/paccaut/files/SCSSGPGD-Prunus.pdf. |
| سنة النشر: | 2009 |
| المجموعة: | CiteSeerX |
| الوصف: | To model the invasion of Prunus serotina invasion within a real forest landscape we built a spatially explicit, non-linear Markov chain which incorporated a stage-structured population matrix and dispersal functions. Sensitivity analyses were subse-quently conducted to identify key processes control-ling the spatial spread of the invader, testing the hypothesis that the landscape invasion patterns are driven in the most part by disturbance patterns, local demographical processes controlling propagule pres-sure, habitat suitability, and long-distance dispersal. When offspring emigration was considered as a density-dependent phenomenon, local demographic factors generated invasion patterns at larger spatial scales through three factors: adult longevity; adult fecundity; and the intensity of self-thinning during stand development. Three other factors acted at the landscape scale: habitat quality, which determined the proportion of the landscape mosaic which was potentially invasible; disturbances, which determined when suitable habitats became temporarily invasible; and the existence of long distance dispersal events, which determined how far from the existing source populations new founder populations could be cre-ated. As a flexible ‘‘all-in-one’ ’ model, PRUNUS offers perspectives for generalization to other plant invasions, and the study of interactions between key processes at multiple spatial scales. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.550.3895; http://www.mathinfo.u-picardie.fr/paccaut/files/SCSSGPGD-Prunus.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.550.3895 http://www.mathinfo.u-picardie.fr/paccaut/files/SCSSGPGD-Prunus.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.89278B5 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |