Comparable canopy and soil free-living nitrogen fixation rates in a lowland tropical forest

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F21%3A00542415" target="_blank" >RIV/86652079:_____/21:00542415 - isvavai.cz</a>
Result on the web
<a href="https://reader.elsevier.com/reader/sd/pii/S0048969720357314?token=DBE8CEBE20F4E38D8EDEE67609DFD10DB3D1F96749CDBDAE11765CC5EA7BBD755C2BB238109CFFF4C721A49E5FF44AD6&originRegion=eu-west-1&originCreation=20210517111433" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0048969720357314?token=DBE8CEBE20F4E38D8EDEE67609DFD10DB3D1F96749CDBDAE11765CC5EA7BBD755C2BB238109CFFF4C721A49E5FF44AD6&originRegion=eu-west-1&originCreation=20210517111433</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.scitotenv.2020.142202" target="_blank" >10.1016/j.scitotenv.2020.142202</a>

Result language
angličtina
Original language name
Comparable canopy and soil free-living nitrogen fixation rates in a lowland tropical forest
Original language description
Biological nitrogen fixation (BNF) isa fundamental part of nitrogen cycling in tropical forests, yet little is known about the contribution made by free-living nitrogen fixers inhabiting the often-extensive forest canopy. We used the acetylene reduction assay, calibrated with N-15(2), to measure free-living BNF on forest canopy leaves, vascular epiphytes, bryophytes and canopy soil, as well as on the forest floor in leaf litter and soil. We used a combination of calculated and published component densities to upscale free-living BNF rates to the forest level. We found that bryophytes and leaves situated in the canopy in particular displayed high mass-based rates of freeliving BNF. Additionally, we calculated that nearly 2 kg of nitrogen enters the forest ecosystem through free-living BNF every year, 40% of which was fixed by the various canopy components. Our results reveal that in the studied tropical lowland forest a large part of the nitrogen input through free-living BNF stems from the canopy, but also that the total nitrogen inputs by free-living BNF are lower than previously thought and comparable to the inputs of reactive nitrogen by atmospheric deposition. (C) 2020 Elsevier B.V. All rights reserved.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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