scholarly journals Major impacts and societal costs of seagrass loss on sediment carbon and nitrogen stocks

Ecosphere ◽  
2021 ◽  
Vol 12 (7) ◽  
Author(s):  
Per‐Olav Moksnes ◽  
Maria Emilia Röhr ◽  
Marianne Holmer ◽  
Johan S. Eklöf ◽  
Louise Eriander ◽  
...  
Keyword(s):  
Societal Costs ◽  
Carbon And Nitrogen ◽  
Sediment Carbon ◽  
Carbon And Nitrogen Stocks

scholarly journals Litterfall dynamics and soil carbon and nitrogen stocks in the Brazilian palm swamp ecosystems

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Gracielle de Brito Sales ◽  
Taynan Aquilles Marinho Lessa ◽  
Daniela Aparecida Freitas ◽  
Maria das Dores Magalhães Veloso ◽  
Maria Ligia de Souza Silva ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Carbon And Nitrogen ◽  
Soil Carbon And Nitrogen ◽  
Carbon And Nitrogen Stocks

Carbon and nitrogen stocks and organic matter fractions in the topsoil of traditional and agrisilvicultural systems in the Southeast of Brazil

Soil Research ◽  
2021 ◽  
Author(s):  
Leidivan Almeida Frazão ◽  
Paulo Henrique Silveira Cardoso ◽  
Maria Nilfa Almeida Neta ◽  
Mauro Franco Castro Mota ◽  
Luana Larissa de Souza Almeida ◽  
...  
Keyword(s):  
Organic Matter ◽  
Carbon And Nitrogen ◽  
Organic Matter Fractions ◽  
Carbon And Nitrogen Stocks

Soil carbon and nitrogen stocks and fractions in a long-term integrated crop–livestock system under no-tillage in southern Brazil

2014 ◽  
Vol 190 ◽  
pp. 52-59 ◽  
Author(s):  
Joice Mari Assmann ◽  
Ibanor Anghinoni ◽  
Amanda Posselt Martins ◽  
Sérgio Ely Valadão Gigante de Andra Costa ◽  
Diego Cecagno ◽  
...  
Keyword(s):  
Soil Carbon ◽  
No Tillage ◽  
Southern Brazil ◽  
Carbon And Nitrogen ◽  
Soil Carbon And Nitrogen ◽  
Carbon And Nitrogen Stocks ◽  
Livestock System

scholarly journals A new dataset of soil carbon and nitrogen stocks and profiles from an instrumented Greenlandic fen designed to evaluate land-surface models

2020 ◽  
Vol 12 (4) ◽  
pp. 2365-2380
Author(s):  
Xavier Morel ◽  
Birger Hansen ◽  
Christine Delire ◽  
Per Ambus ◽  
Mikhail Mastepanov ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Greenhouse Gas ◽  
Land Surface ◽  
High Water Content ◽  
Land Surface Models ◽  
Carbon And Nitrogen ◽  
Soil Carbon And Nitrogen ◽  
C Cycle ◽  
Surface Models ◽  
Carbon And Nitrogen Stocks

Abstract. Arctic and boreal peatlands play a major role in the global carbon (C) cycle. They are particularly efficient at sequestering carbon because their high water content limits decomposition rates to levels below their net primary productivity. Their future in a climate-change context is quite uncertain in terms of carbon emissions and carbon sequestration. Nuuk fen is a well-instrumented Greenlandic fen with monitoring of soil physical variables and greenhouse gas fluxes (CH4 and CO2) and is of particular interest for testing and validating land-surface models. But knowledge of soil carbon stocks and profiles is missing. This is a crucial shortcoming for a complete evaluation of models, as soil carbon is one of the primary drivers of CH4 and CO2 soil emissions. To address this issue, we measured, for the first time, soil carbon and nitrogen density, profiles and stocks in the Nuuk peatland (64∘07′51′′ N, 51∘23′10′′ W), colocated with the greenhouse gas measurements. Measurements were made along two transects, 60 and 90 m long and with a horizontal resolution of 5 m and a vertical resolution of 5 to 10 cm, using a 4 cm diameter gouge auger. A total of 135 soil samples were analyzed. Soil carbon density varied between 6.2 and 160.2 kg C m−3 with a mean value of 50.2 kg C m−3. Mean soil nitrogen density was 2.37 kg N m−3. Mean soil carbon and nitrogen stocks are 36.3 kg C m−2 and 1.7 kg N m−2. These new data are in the range of those encountered in other arctic peatlands. This new dataset, one of very few in Greenland, can contribute to further development of joint modeling of greenhouse gas emissions and soil carbon and nitrogen in land-surface models. The dataset is open-access and available at https://doi.org/10.1594/PANGAEA.909899 (Morel et al., 2019b).

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