Emissions of nitrous oxide and methane from Antarctic Tundra: role of penguin dropping deposition

Sun, Liguang; Zhu, Renbin; Xie, Zhouqing; Xing, Guangxi

doi:10.1016/s1352-2310(02)00340-0

Cited by 73 publications

(68 citation statements)

References 12 publications

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“…It is further an interesting finding, that penguin rookeries, i.e. the related microbial communities, evolve methane and nitrous oxide in ranges like emissions from northern mesic tundra sites (Sun et al 2002). Such emissions, although at lower rates have also been measured in the Dry Valley region (Gregorich et al 2006).…”

Section: Soil Formation Related To Soil Organismsmentioning

confidence: 93%

Soil development and soil biology on King George Island, Maritime Antarctic

Bölter¹

2011

Polish Polar Research

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Abstract:This review covers aspects of soil science and soil biology of Antarctica with special focus on King George Island, South Shetlands, the martitime Antarctic. New approaches in soil descriptions and soil taxonomy show a great variety of soil types, related to different parent material, mainly volcanic origin, as well as on influences by soil biological processes. The spread of higher rooting plants attract microorganisms, nematodes and collemboles which in turn build new organic material and change the environment for further successors. Microbial communities are drivers with respect to metabolic and physiological properties indicating a great potential in a changing environment. The literature review also shows a lack of investi− gations on processes of carbon and nitrogen turnover, despite wide knowledge on its standing stock in different environments. Further, only few reports were found on the processes of humification. Only few data are available which can be regarded as long term monitorings, hence, such projects need to be established in order to follow ecological changes.

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Section: Soil Formation Related To Soil Organismsmentioning

confidence: 93%

Soil development and soil biology on King George Island, Maritime Antarctic

Bölter¹

2011

Polish Polar Research

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“…The magnitude of these greenhouse gas fluxes and the main soil and climatic factors that influence natural austral ecosystems in melting areas, as the maritime Antarctica, came to be evaluated only from the last decade, and these studies are still scarce (Sun et al 2002;Vieira et al 2012). The study of the flux rates of N 2 O and CH 4 in these environments has extreme importance since these two gases have a greater warming potential than CO 2 : 25 times greater for CH 4 and 298 times higher for N 2 O (Metz et al 2007).…”

mentioning

confidence: 99%

“…Tundra soils covered with mosses or lichens of the Antarctic Peninsula are distributed in areas without permanent snow cover during part of the summer and comprise about 8% of the maritime Antarctica (Sun et al 2002;. They contain large areas colonized by mosses and lichens; occasionally species of higher plants are found (Putzke et al 1998).…”

mentioning

confidence: 99%

“…They contain large areas colonized by mosses and lichens; occasionally species of higher plants are found (Putzke et al 1998). These soils, called cryosols, are the result of cycles of freezing and thawing, of biogeochemical processes under each vegetation type and also of the deposition of droppings by penguins and other seabirds (Sun et al 2002;Ugolini & Bockheim 2008). When modified by bird activity, cryosols are called ornithogenic cryosols (Simas et al 2008).…”

mentioning

confidence: 99%

“…With high levels of organic carbon (CO), nitrogen (N) and phosphorus, they are particularly fertile (Sun et al 2002;Gregorich et al 2006;Michel et al 2006;Aislabie et al 2008;Simas et al 2008;. Relatively high CH 4 and N 2 O emission rates have been reported in these ecosystems (Sun et al 2002;.…”

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confidence: 99%

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Methane and nitrous oxide fluxes in relation to vegetation covers and bird activity in ice-free soils of Rip Point, Nelson Island, Antarctica

Neufeld¹,

Godoi²,

Pereira³

et al. 2015

Polar Research

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Marine animals significantly increase tundra N₂O and CH₄emissions in maritime Antarctica

Zhu

Liu

et al. 2013

JGR Biogeosciences

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[1] Most studies on greenhouse gas emissions from animals concentrated on domestic animals, with limited data available from wild animals. The number of marine animals is potentially large in coastal Antarctica. In this paper, N 2 O and CH 4 emissions were investigated from a penguin colony, a seal colony, a skua colony, the adjacent animal-lacking tundra, and background tundra sites to test the effects of marine animals on their fluxes in maritime Antarctica. ) are much higher than those from the animal-lacking tundra, whereas the background tundra showed negligible N 2 O fluxes. Penguin puddles and seal wallows were stronger CH 4 emitters than animal colony tundra soils, while animal-lacking tundra soils were strong CH 4 sinks. Overall high N 2 O and CH 4 emissions were modulated by soil physical and chemical processes associated with marine animal activities: sufficient supply of the nutrients NH 4 + -N and NO 3 À -N, total nitrogen, and total organic carbon from marine animal excreta, animal tramp, and high soil water-filled pore space. Laboratory incubation experiments further confirmed that penguin and seal colony soils produced much higher N 2 O and CH 4 emissions than animal-lacking tundra soils. Our results indicate that marine animal colonies are the hot spots for N 2 O and CH 4 emissions in maritime Antarctica, and even at the global scale, and current climate warming will further increase their emissions.

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Emissions of nitrous oxide and methane from Antarctic Tundra: role of penguin dropping deposition

Cited by 73 publications

References 12 publications

Soil development and soil biology on King George Island, Maritime Antarctic

Soil development and soil biology on King George Island, Maritime Antarctic

Methane and nitrous oxide fluxes in relation to vegetation covers and bird activity in ice-free soils of Rip Point, Nelson Island, Antarctica

Marine animals significantly increase tundra N₂O and CH₄emissions in maritime Antarctica

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Emissions of nitrous oxide and methane from Antarctic Tundra: role of penguin dropping deposition

Cited by 73 publications

References 12 publications

Soil development and soil biology on King George Island, Maritime Antarctic

Soil development and soil biology on King George Island, Maritime Antarctic

Methane and nitrous oxide fluxes in relation to vegetation covers and bird activity in ice-free soils of Rip Point, Nelson Island, Antarctica

Marine animals significantly increase tundra N2O and CH4emissions in maritime Antarctica

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Marine animals significantly increase tundra N₂O and CH₄emissions in maritime Antarctica