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Conservative N cycl...
Conservative N cycling despite high atmospheric deposition in early successional African tropical lowland forests
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Makelele, I. A. (författare)
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Bauters, M. (författare)
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Verheyen, K. (författare)
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visa fler...
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Barthel, M. (författare)
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Six, J. (författare)
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- Rütting, Tobias, 1977 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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Bode, S. (författare)
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Ntaboba, L. C. (författare)
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Bazirake, B. M. (författare)
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Bosela, F. B. (författare)
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Kimbesa, F. (författare)
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Ewango, C. (författare)
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Boeckx, P. (författare)
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visa färre...
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(creator_code:org_t)
- 2022-05-06
- 2022
- Engelska.
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Ingår i: Plant and Soil. - : Springer Science and Business Media LLC. - 0032-079X .- 1573-5036. ; 477, s. 743-758
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Background Across the tropics, the share of secondary versus primary forests is strongly increasing. The high rate of biomass accumulation during this secondary succession relies on the availability of essential nutrients, such as nitrogen (N). Nitrogen primarily limits many young secondary forests in the tropics. However, recent studies have shown that forests of the Congo basin are subject to high inputs of atmospheric N deposition, potentially alleviating this N limitation in early succession. Methods To address this hypothesis, we assessed the N status along a successional gradient of secondary forests in the Congo basin. In a set-up of 18 plots implemented along six successional stages, we quantified year-round N deposition, N leaching, N2O emission and the N flux of litterfall and fine root assimilation. Additionally, we determined the N content and C:N stoichiometry for canopy leaves, fine roots, and litter, as well as delta N-15 of canopy leaves. Results We confirmed that these forests receive high amounts of atmospheric N deposition, with an increasing deposition as forest succession proceeds. Additionally, we noted lower C:N ratios, and higher N leaching losses, N2O emission, and foliar delta N-15 in older secondary forest (60 years). In contrast, higher foliar, litter and root C:N ratios, and lower foliar delta N-15, N leaching, and N2O emission in young (< 20 years) secondary forest were observed. Conclusions Altogether, we show that despite high N deposition, this early forest succession still shows conservative N cycling characteristics, which are likely indicating N limitation early on in secondary forest succession. As secondary succession advances, the N cycle gradually becomes more open.
Ämnesord
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Jordbruksvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Agricultural Science (hsv//eng)
Nyckelord
- Congo basin
- Nitrogen cycle
- Secondary succession
- Tropical forests
- biogeochemistry
- rain-forest
- isotopic composition
- nitrogen deposition
- soil
- carbon
- interception
- throughfall
- basin
- emissions
- fixation
- Agriculture
- Plant Sciences
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Makelele, I. A.
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Bauters, M.
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Verheyen, K.
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Barthel, M.
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Six, J.
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Rütting, Tobias, ...
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visa fler...
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Bode, S.
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Ntaboba, L. C.
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Bazirake, B. M.
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Bosela, F. B.
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Kimbesa, F.
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Ewango, C.
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Boeckx, P.
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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och Botanik
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- LANTBRUKSVETENSKAPER
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LANTBRUKSVETENSK ...
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och Lantbruksvetensk ...
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och Jordbruksvetensk ...
- Artiklar i publikationen
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Plant and Soil
- Av lärosätet
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Göteborgs universitet