Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00442-011-1964-6 |
Interaction between ungulates and bruchid beetles and its effect on Acacia trees: modeling the costs and benefits of seed dispersal to plant demography | |
Rodriguez-Perez, Javier1; Wiegand, Kerstin1; Ward, David2 | |
通讯作者 | Rodriguez-Perez, Javier |
来源期刊 | OECOLOGIA
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ISSN | 0029-8549 |
EISSN | 1432-1939 |
出版年 | 2011 |
卷号 | 167期号:1页码:97-105 |
英文摘要 | Integrative studies of plant-animal interactions that incorporate the multiple effects of interactions are important for discerning the importance of each factor within the population dynamics of a plant species. The low regeneration capacity of many Acacia species in arid savannas is a consequence of a combination of reduction in seed dispersal and high seed predation. Here we studied how ungulates (acting as both seed dispersers and herbivores) and bruchid beetles (post-dispersal seed predators) modulate the population dynamics of A. raddiana, a keystone species in the Middle East. We developed two simulation models of plant demography: the first included seed ingestion by ungulates and seed predation by bruchids, whereas the second model additionally incorporated herbivory by ungulates. We also included the interacting effects of seed removal and body mass, because larger ungulates destroy proportionally fewer seeds and enhance seed germination. Simulations showed that the negative effect of seed predation on acacia population size was compensated for by the positive effect of seed ingestion at 50 and 30% seed removal under scenarios with and without herbivory, respectively. Smaller ungulates (e.g., < 35 kg) must necessarily remove tenfold more seeds than larger ungulates (e.g., > 250 kg) to compensate for the negative effect of seed predation. Seedling proportion increased with seed removal in the model with herbivory. Managing and restoring acacia seed dispersers is key to conserving acacia populations, because low-to-medium seed removal could quickly restore their regeneration capacity. |
英文关键词 | Herbivory Population growth rate Seed removal Seed predation Simulation models |
类型 | Article |
语种 | 英语 |
国家 | Germany ; South Africa |
收录类别 | SCI-E |
WOS记录号 | WOS:000293914000010 |
WOS关键词 | LARGE MAMMALIAN HERBIVORES ; ASIATIC WILD ASS ; NEGEV DESERT ; POPULATION-DYNAMICS ; AFRICAN SAVANNA ; AMAZONIAN FORESTS ; SIMULATION-MODEL ; LOW RECRUITMENT ; NUBIAN IBEX ; ISRAEL |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/169820 |
作者单位 | 1.Univ Jena, Inst Ecol, D-07743 Jena, Germany; 2.Univ KwaZulu Natal, Sch Biol & Conservat Sci, ZA-3209 Scottsville, South Africa |
推荐引用方式 GB/T 7714 | Rodriguez-Perez, Javier,Wiegand, Kerstin,Ward, David. Interaction between ungulates and bruchid beetles and its effect on Acacia trees: modeling the costs and benefits of seed dispersal to plant demography[J],2011,167(1):97-105. |
APA | Rodriguez-Perez, Javier,Wiegand, Kerstin,&Ward, David.(2011).Interaction between ungulates and bruchid beetles and its effect on Acacia trees: modeling the costs and benefits of seed dispersal to plant demography.OECOLOGIA,167(1),97-105. |
MLA | Rodriguez-Perez, Javier,et al."Interaction between ungulates and bruchid beetles and its effect on Acacia trees: modeling the costs and benefits of seed dispersal to plant demography".OECOLOGIA 167.1(2011):97-105. |
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