| 来源类型 | Article
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| 规范类型 | 其他
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| DOI | 10.1016/j.ecolmodel.2007.06.001
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| The relevance of ecological pyramids in community assemblages. |
| Fath BD; Killian MC
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| 发表日期 | 2007
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| 出处 | Ecological Modelling 208 (2): 286-294
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| 出版年 | 2007
|
| 语种 | 英语
|
| 摘要 | In this paper, we investigate the trophic pyramid structure of 17 commonly studied ecosystems (terrestrial and varying aquatic environments). Food-web taxa from these ecosystems are classified into six functional groups: primary producers, herbivores, carnivores, omnivores, detritus, and detrital feeder; we find that the majority of the food webs exhibit an inverted pyramid structure with more higher trophic groups than lower ones. We find the average pyramid and inverted pyramid trophic distributions for these webs, and along with the uniform distribution, construct large-scale ecological networks based on these distributions. By creating and analyzing structural and flow matrices of these distributions using the cyber-ecosystem community assembly rule model, we compare the ecological parameters cycling, amplification, homogenization, indirect effects, and synergism. Excluding amplification, which does not occur in larger-scale models, we find that all network parameters show strong characteristic behaviors regardless of the trophic structure. Therefore, ecological network parameters are not considerably sensitive to different structures, indicating there may not be a preferred diet distribution. |
| 主题 | Dynamic Systems (DYN)
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| 关键词 | Community assembly rules
Ecological network analysis
Food webs
Trophic pyramids
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| URL | http://pure.iiasa.ac.at/id/eprint/8122/
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| 来源智库 | International Institute for Applied Systems Analysis (Austria)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/128647
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推荐引用方式
GB/T 7714 |
Fath BD,Killian MC. The relevance of ecological pyramids in community assemblages.. 2007.
|
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