Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.12900 |
On the prevalence and dynamics of inverted trophic pyramids and otherwise top-heavy communities | |
McCauley, Douglas J.1,2; Gellner, Gabriel3; Martinez, Neo D.4; Williams, Richard J.5; Sandin, Stuart A.6; Micheli, Fiorenza7,8; Mumby, Peter J.9; McCann, Kevin S.10 | |
2018-03-01 | |
发表期刊 | ECOLOGY LETTERS |
ISSN | 1461-023X |
EISSN | 1461-0248 |
出版年 | 2018 |
卷号 | 21期号:3页码:439-454 |
文章类型 | Review |
语种 | 英语 |
国家 | USA; Australia; Canada |
英文摘要 | Classically, biomass partitioning across trophic levels was thought to add up to a pyramidal distribution. Numerous exceptions have, however, been noted including complete pyramidal inversions. Elevated levels of biomass top-heaviness (i.e. high consumer/resource biomass ratios) have been reported from Arctic tundra communities to Brazilian phytotelmata, and in species assemblages as diverse as those dominated by sharks and ants. We highlight two major pathways for creating top-heaviness, via: (1) endogenous channels that enhance energy transfer across trophic boundaries within a community and (2) exogenous pathways that transfer energy into communities from across spatial and temporal boundaries. Consumer-resource models and allometric trophic network models combined with niche models reveal the nature of core mechanisms for promoting top-heaviness. Outputs from these models suggest that top-heavy communities can be stable, but they also reveal sources of instability. Humans are both increasing and decreasing top-heaviness in nature with ecological consequences. Current and future research on the drivers of top-heaviness can help elucidate fundamental mechanisms that shape the architecture of ecological communities and govern energy flux within and between communities. Questions emerging from the study of top-heaviness also usefully draw attention to the incompleteness and inconsistency by which ecologists often establish definitional boundaries for communities. |
英文关键词 | Allometric trophic network biomass boundary community consumer inverted pyramid resource stability top-heavy trophic |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000424890900013 |
WOS关键词 | FOOD-WEB STRUCTURE ; BOTTOM-UP CONTROL ; PLANKTONIC COMMUNITIES ; OLIGOTROPHIC OCEAN ; SIZE RELATIONSHIPS ; BIOMASS STRUCTURE ; ECOLOGICAL ROLE ; 10-YEAR CYCLE ; BODY-SIZE ; ABUNDANCE |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
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/31328 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Calif Santa Barbara, Ecol, Evolut & Marine Biol, Santa Barbara, CA 93106 USA; 2.Marine Sci Inst, Santa Barbara, CA 93106 USA; 3.Colorado State Univ, Biol, Ft Collins, CO 80523 USA; 4.Univ Arizona, Ecol & Evolutionary Biol, Tucson, AZ 85721 USA; 5.Vibrant Data Inc, 943 Clay St, San Francisco, CA 94108 USA; 6.Scripps Inst Oceanog, Ctr Marine Biodivers & Conservat, 8750 Biol Grade, La Jolla, CA 92037 USA; 7.Stanford Univ, Hopkins Marine Stn, Pacific Grove, CA 93950 USA; 8.Stanford Univ, Ctr Ocean Solut, Pacific Grove, CA 93950 USA; 9.Univ Queensland, Marine Spatial Ecol Lab, Sch Biol Sci, Goddard Bldg, St Lucia, Qld 4072, Australia; 10.Univ Guelph, Integrat Biol, Guelph, ON N1G 2W1, Canada |
推荐引用方式 GB/T 7714 | McCauley, Douglas J.,Gellner, Gabriel,Martinez, Neo D.,et al. On the prevalence and dynamics of inverted trophic pyramids and otherwise top-heavy communities[J]. ECOLOGY LETTERS,2018,21(3):439-454. |
APA | McCauley, Douglas J..,Gellner, Gabriel.,Martinez, Neo D..,Williams, Richard J..,Sandin, Stuart A..,...&McCann, Kevin S..(2018).On the prevalence and dynamics of inverted trophic pyramids and otherwise top-heavy communities.ECOLOGY LETTERS,21(3),439-454. |
MLA | McCauley, Douglas J.,et al."On the prevalence and dynamics of inverted trophic pyramids and otherwise top-heavy communities".ECOLOGY LETTERS 21.3(2018):439-454. |
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