globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0129775
论文题名:
Herbivory and Stoichiometric Feedbacks to Primary Production
作者: Jennifer Adams Krumins; Valdis Krumins; Eric Forgoston; Lora Billings; Wim H. van der Putten
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2015
发表日期: 2015-6-22
卷: 10, 期:6
语种: 英语
英文关键词: Plant-herbivore interactions ; Herbivory ; Biomass (ecology) ; Death rates ; Excretion ; Aquatic environments ; Grazing ; Nitrogen metabolism
英文摘要: Established theory addresses the idea that herbivory can have positive feedbacks on nutrient flow to plants. Positive feedbacks likely emerge from a greater availability of organic carbon that primes the soil by supporting nutrient turnover through consumer and especially microbially-mediated metabolism in the detrital pool. We developed an entirely novel stoichiometric model that demonstrates the mechanism of a positive feedback. In particular, we show that sloppy or partial feeding by herbivores increases detrital carbon and nitrogen allowing for greater nitrogen mineralization and nutritive feedback to plants. The model consists of differential equations coupling flows among pools of: plants, herbivores, detrital carbon and nitrogen, and inorganic nitrogen. We test the effects of different levels of herbivore grazing completion and of the stoichiometric quality (carbon to nitrogen ratio, C:N) of the host plant. Our model analyses show that partial feeding and plant C:N interact because when herbivores are sloppy and plant biomass is diverted to the detrital pool, more mineral nitrogen is available to plants because of the stoichiometric difference between the organisms in the detrital pool and the herbivore. This model helps to identify how herbivory may feedback positively on primary production, and it mechanistically connects direct and indirect feedbacks from soil to plant production.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0129775&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/21562
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: Department of Biology and Molecular Biology, Montclair State University, Montclair, New Jersey, United States of America;Department of Terrestrial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands;Department of Environmental Sciences, Rutgers University, New Brunswick, New Jersey, United States of America;Department of Mathematical Sciences, Montclair State University, Montclair, New Jersey, United States of America;Department of Mathematical Sciences, Montclair State University, Montclair, New Jersey, United States of America;Department of Terrestrial Ecology, Netherlands Institute of Ecology, Wageningen, The Netherlands;Laboratory of Nematology, Wageningen University, Wageningen, The Netherlands

Recommended Citation:
Jennifer Adams Krumins,Valdis Krumins,Eric Forgoston,et al. Herbivory and Stoichiometric Feedbacks to Primary Production[J]. PLOS ONE,2015-01-01,10(6)
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