DOI: 10.1002/2013GB004612
Scopus记录号: 2-s2.0-84888776734
论文题名: Environmental controls over methane emissions from bromeliad phytotelmata: The role of phosphorus and nitrogen availability, temperature, and water content
作者: Kotowska M ; M ; , Werner F ; A
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 4 起始页码: 1186
结束页码: 1193
语种: 英语
英文关键词: Bromeliaceae
; fertilization
; methanogenesis
; nutrient limitation
; slurry incubation
Scopus关键词: Bromeliaceae
; fertilization
; Increasing temperatures
; Methane concentrations
; Methanogenesis
; Nitrogen availability
; Nutrient limitations
; Temperature fluctuation
; Atmospheric chemistry
; Sodium compounds
; Tanks (containers)
; Urea
; Methane
; carbon emission
; climate effect
; epiphyte
; leaf
; methane
; nitrogen
; nutrient availability
; phosphorus
; seasonality
; simulation
; Archaea
; Bromeliaceae
; Tillandsia
; Tillandsia complanata
英文摘要: Tank bromeliads are common epiphytic plants throughout neotropical forests that store significant amounts of water in phytotelmata (tanks) formed by highly modified leafs. Methanogenic archaea in these tanks have recently been identified as a significant source of atmospheric methane. We address the effects of environmental drivers (temperature, tank water content, sodium phosphate [P], and urea [N] addition) on methane production in anaerobically incubated bromeliad slurry and emissions from intact bromeliad tanks in montane Ecuador. N addition ≥ 1 mg g-1 had a significantly positive effect on headspace methane concentrations in incubation jars while P addition did not affect methane production at any dosage (≤ 1 mg g-1). Tank bromeliads (Tillandsia complanata) cultivated in situ showed significantly increased effluxes of methane in response to the addition of 26 mg N addition per tank but not to lower dosage of N or any dosage of P (≤ 5.2 mg plant -1). There was no significant interaction between N and P addition. The brevity of the stimulatory effect of N addition on plant methane effluxes (1-2 days) points at N competition by other microorganisms or bromeliads. Methane efflux from plants closely followed within-day temperature fluctuations over 24 h cycles, yet the dependency of temperature was not exponential as typical for terrestrial wetlands but instead linear. In simulated drought, methane emission from bromeliad tanks was maintained with minimum amounts of water and regained after a short lag phase of approximately 24 h. Our results suggest that methanogens in bromeliads are primarily limited by N and that direct effects of global change (increasing temperature and seasonality, remote fertilization) on bromeliad methane emissions are of moderate scale. ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77562
Appears in Collections: 气候变化事实与影响
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作者单位: Plant Ecology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University of Göttingen, Göttingen, Germany; Functional Ecology, Institute of Biology and Environmental Sciences, Carl-von-Ossietzky-University of Oldenburg, PO Box 2503, Oldenburg, DE-26111, Germany
Recommended Citation:
Kotowska M,M,, Werner F,et al. Environmental controls over methane emissions from bromeliad phytotelmata: The role of phosphorus and nitrogen availability, temperature, and water content[J]. Global Biogeochemical Cycles,2013-01-01,27(4)