DOI: 10.1016/j.atmosenv.2015.10.062
Scopus记录号: 2-s2.0-84948144483
论文题名: Surface greenhouse gas fluxes downwind of a penguin colony in the maritime sub-Antarctic
作者: Drewer J ; , Braban C ; F ; , Tang Y ; S ; , Anderson M ; , Skiba U ; M ; , Dragosits U ; , Trathan P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123 起始页码: 9
结束页码: 17
语种: 英语
英文关键词: Carbon dioxide
; Methane
; Nitric oxide
; Nitrous oxide
; Sub-Antarctica
; Vegetal residue
Scopus关键词: Birds
; Carbon dioxide
; Ecology
; Ecosystems
; Greenhouse gases
; Methane
; Nitric oxide
; Nitrogen oxides
; Soils
; Antarctica
; Greenhouse gas (GHG)
; Greenhouse gas fluxes
; Laboratory studies
; Nitrous oxide
; Passive diffusion samplers
; Spatial variability
; Vegetal residue
; Soil pollution
; ammonia
; carbon
; carbon dioxide
; methane
; nitric oxide
; nitrogen
; nitrous oxide
; ammonia
; atmospheric pollution
; carbon dioxide
; colony
; concentration (composition)
; flux measurement
; greenhouse gas
; marine pollution
; methane
; nitric oxide
; nitrous oxide
; point source pollution
; seabird
; soil depth
; spatial variation
; air temperature
; Antarctica
; Article
; breathing rate
; carbon cycling
; carbon dioxide breathing
; controlled study
; ecosystem
; environmental parameters
; greenhouse gas
; limit of detection
; nitrogen cycling
; nonhuman
; penguin
; priority journal
; seabird
; soil chemistry
; soil depth
; soil respiration
; summer
; Antarctica
; Bird Island [South Georgia]
; South Georgia
; Aves
; Eudyptes chrysolophus
; Spheniscidae
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The relationship between ammonia (NH3) concentrations downwind from a penguin colony and local surface greenhouse gas (GHG) fluxes was investigated on the remote sub-Antarctic Bird Island (54°00'S, 38°03'W) during summer 2010 (November and December). A Macaroni penguin (Eudyptes chrysolophus) colony (40,000 pairs) at Goldcrest Point is a large point source of NH3 on the island and a measurement transect of 23 m, 36 m, 70 m, 143 m and 338 m was set up downwind from the colony. Atmospheric NH3 concentrations measured by passive diffusion samplers declined from 23 μg m-3 close to the colony to less than 1 μg m-3 338 m downwind. As increased nitrogen (N) deposition can affect soil carbon (C) and N cycling, it can therefore potentially influence GHG and nitric oxide (NO) emission rates. However, in this study, a clear correlation between surface GHG fluxes and atmospheric NH3 concentrations could not be established. Average fluxes for nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) over the entire transect and the eight week study period ranged from 7 to 23 μg N2O-N m-2 h-1, -5.5-245 μg CH4 m-2 h-1, and CO2 respiration rates averaged 2.2 μmol m-2 s-1. Laboratory studies using intact soil cores from the transect also did not show any significant correlation between atmospheric NH3 concentrations and N2O, NO, CH4 emissions or CO2 respiration rates. Overall, fluxes measured in the laboratory study reflected the high variability measured in the field. Large changes in soil depth along the transect, due to the topography of the island, possibly influenced fluxes more than NH3 concentration and seabirds appeared to have a more localised input (e.g. ground nesting birds). However, warmer temperatures might have a large potential to increase GHG fluxes in this ecosystem. This study confirms that GHG fluxes do occur in these ornithogenic ecosystems, however, the scale of the impact remains largely unquantified due to high uncertainties and high spatial variability. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81403
Appears in Collections: 气候变化事实与影响
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作者单位: CEH, Bush Estate, Penicuik, United Kingdom; BAS, Madingley Road, High Cross, Cambridge, United Kingdom
Recommended Citation:
Drewer J,, Braban C,F,et al. Surface greenhouse gas fluxes downwind of a penguin colony in the maritime sub-Antarctic[J]. Atmospheric Environment,2015-01-01,123