DOI: 10.1111/ele.13517
论文题名: The seventh macronutrient: how sodium shortfall ramifies through populations, food webs and ecosystems
作者: Kaspari M.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期: 7 起始页码: 1153
结束页码: 1168
语种: 英语
中文关键词: Biogeochemistry
; biogeography
; global change
; herbivory
; ionomics
; plant chemistry
; plant–consumer interactions
; pollination
; sodium
; stoichiometry
英文关键词: commodity
; concentration (composition)
; detritivory
; food web
; herbivory
; metabolism
; nutrient availability
; physiology
; sodium
; tannin
; trophic level
; Animalia
; Bison
; Elephantidae
; sodium
; animal
; ecosystem
; food chain
; herbivory
; Animals
; Ecosystem
; Food Chain
; Herbivory
; Nutrients
; Sodium
英文摘要: Of the 25 elements required to build most organisms, sodium has a unique set of characteristics that ramify through terrestrial ecology. In plants, sodium is found in low concentrations and has little metabolic function; in plant consumers, particularly animals, sodium is essential to running costly Na-K ATPases. Here I synthesise a diverse literature from physiology, agronomy and ecology, towards identifying sodium’s place as the ‘7th macronutrient’, one whose shortfall targets two trophic levels – herbivores and detritivores. I propose that sodium also plays a central, though unheralded role in herbivore digestion, via its importance to maintaining microbiomes and denaturing tannins. I highlight how sodium availability is a key determinant of consumer abundance and the geography of herbivory and detritivory. And I propose a re-appraisal of the assumption that, because sodium is metabolically unimportant to most plants, it is of little use. Instead, I suggest that sodium’s critical role in limiting herbivore performance makes it a commodity used by plants to manipulate their herbivores and mutualists, and by consumers like bison and elephants to generate grazing lawns: dependable sources of sodium. © 2020 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166650
Appears in Collections: 气候变化与战略
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作者单位: Geographical Ecology Group, Department of Biology, University of Oklahoma, Norman, OK, United States
Recommended Citation:
Kaspari M.. The seventh macronutrient: how sodium shortfall ramifies through populations, food webs and ecosystems[J]. Ecology Letters,2020-01-01,23(7)