Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1820143117 |
Generalists are more specialized in low-resource habitats, increasing stability of ecological network structure | |
Robinson, Moria L.1; Strauss, Sharon Y.1,2 | |
2020-01-28 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:4页码:2043-2048 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Linking mechanistic processes to the stability of ecological networks is a key frontier in ecology. In trophic networks, "modules"-groups of species that interact more with each other than with other members of the community-confer stability, mitigating effects of species loss or perturbation. Modularity, in turn, is shaped by the interplay between species' diet breadth traits and environmental influences, which together dictate interaction structure. Despite the importance of network modularity, variation in this emergent property is poorly understood in complex natural systems. Using two years of field data, we quantified interactions between a rich community of lepidopteran herbivores and their host plants across a mosaic of low-resource serpentine and high-resource nonserpentine soils. We used literature and our own observations to categorize herbivore species as generalists (feeding on more than one plant family) or specialists (feeding on one plant family). In both years, the plant-herbivore network was more modular on serpentine than on nonserpentine soils-despite large differences in herbivore assemblage size across years. This structural outcome was primarily driven by reduction in the breadth of host plant use by generalist species, rather than by changes in the composition of species with different fundamental diet breadths. Greater modularity- and thus greater stability-reflects environmental conditions and plastic responses by generalist herbivores to low host plant quality. By considering the dual roles of species traits and ecological processes, we provide a deeper mechanistic understanding of network modularity, and suggest a role for resource availability in shaping network persistence. |
英文关键词 | ecological networks plant-herbivore interactions network modularity resource availability hypothesis herbivore diet breadth |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000509791700034 |
WOS关键词 | HERBIVORE ; DEFENSE ; CONSEQUENCES ; PLANTS ; COMPARTMENTS ; PERFORMANCE ; RESISTANCE ; PREFERENCE ; EVOLUTION ; MODULES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249790 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Calif Davis, Ctr Populat Biol, Davis, CA 95616 USA; 2.Univ Calif Davis, Dept Evolut & Ecol, Davis, CA 95616 USA |
推荐引用方式 GB/T 7714 | Robinson, Moria L.,Strauss, Sharon Y.. Generalists are more specialized in low-resource habitats, increasing stability of ecological network structure[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(4):2043-2048. |
APA | Robinson, Moria L.,&Strauss, Sharon Y..(2020).Generalists are more specialized in low-resource habitats, increasing stability of ecological network structure.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(4),2043-2048. |
MLA | Robinson, Moria L.,et al."Generalists are more specialized in low-resource habitats, increasing stability of ecological network structure".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.4(2020):2043-2048. |
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