globalchange  > 气候变化与战略
DOI: 10.1111/ele.13725
论文题名:
Mutualism disruption by an invasive ant reduces carbon fixation for a foundational East African ant-plant
作者: Milligan P.D.; Martin T.A.; John G.P.; Riginos C.; Goheen J.R.; Carpenter S.M.; Palmer T.M.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期:5
起始页码: 1052
结束页码: 1062
语种: 英语
中文关键词: ant-plant ; biological invasion ; invasive ant ; mutualism ; photosynthesis
英文关键词: Acacia drepanolobium ; Pheidole megacephala ; Vertebrata ; Acacia ; animal ; ant ; carbon cycle ; ecosystem ; symbiosis ; Acacia ; Animals ; Ants ; Carbon Cycle ; Ecosystem ; Symbiosis
英文摘要: Invasive ants shape assemblages and interactions of native species, but their effect on fundamental ecological processes is poorly understood. In East Africa, Pheidole megacephala ants have invaded monodominant stands of the ant-tree Acacia drepanolobium, extirpating native ant defenders and rendering trees vulnerable to canopy damage by vertebrate herbivores. We used experiments and observations to quantify direct and interactive effects of invasive ants and large herbivores on A. drepanolobium photosynthesis over a 2-year period. Trees that had been invaded for ≥ 5 years exhibited 69% lower whole-tree photosynthesis during key growing seasons, resulting from interaction between invasive ants and vertebrate herbivores that caused leaf- and canopy-level photosynthesis declines. We also surveyed trees shortly before and after invasion, finding that recent invasion induced only minor changes in leaf physiology. Our results from individual trees likely scale up, highlighting the potential of invasive species to alter ecosystem-level carbon fixation and other biogeochemical cycles. © 2021 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166888
Appears in Collections:气候变化与战略

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作者单位: Department of Biology, University of Florida, Gainesville, FL, United States; Mpala Research Centre, Nanyuki, Kenya; School of Forest Resources and Conservation, University of Florida, Gainesville, FL, United States; School of the Environment, Yale University, New Haven, CT, United States; The Nature Conservancy, Lander, WY, United States; Department of Zoology and Physiology, University of Wyoming, Laramie, WY, United States

Recommended Citation:
Milligan P.D.,Martin T.A.,John G.P.,et al. Mutualism disruption by an invasive ant reduces carbon fixation for a foundational East African ant-plant[J]. Ecology Letters,2021-01-01,24(5)
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