scholarly journals Greenhouse gas production in low-latitude lake sediments responds strongly to warming

2014 ◽  
Vol 4 (6) ◽  
pp. 467-470 ◽  
Author(s):  
H. Marotta ◽  
L. Pinho ◽  
C. Gudasz ◽  
D. Bastviken ◽  
L. J. Tranvik ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Lake Sediments ◽  
Gas Production ◽  
Low Latitude

scholarly journals Plant Litter Type Dictates Microbial Communities Responsible for Greenhouse Gas Production in Amended Lake Sediments

2018 ◽  
Vol 9 ◽  
Author(s):  
Kurt M. Yakimovich ◽  
Erik J. S. Emilson ◽  
Michael A. Carson ◽  
Andrew J. Tanentzap ◽  
Nathan Basiliko ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Greenhouse Gas ◽  
Lake Sediments ◽  
Gas Production ◽  
Plant Litter ◽  
Litter Type

scholarly journals Dissolved organic carbon, CO2, and CH4 concentrations and their stable isotope ratios in thermokarst lakes on the Qinghai-Tibetan Plateau

2016 ◽  
Author(s):  
Cuicui Mu ◽  
Tingjun Zhang ◽  
Qingbai Wu ◽  
Xiaoqing Peng ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Tibetan Plateau ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Greenhouse Gas ◽  
Lake Sediments ◽  
Thermal Stratification ◽  
Gas Production ◽  
Stable Isotope Ratios ◽  
Thermokarst Lakes

<p>Thermokarst lakes are widely distributed on the Qinghai-Tibetan Plateau (QTP), which accounts for 8% of the global permafrost area. These lakes probably promote organic matter biodegradation and thus accelerate the emission of carbon-based greenhouse gases. However, little is known about greenhouse gas concentrations and their stable isotopes characteristics of these lakes. In this study, we measured the concentrations of dissolved organic carbon (DOC), dissolved CO<sub>2</sub> and CH<sub>4</sub>, as well as the distribution of δ<sup>13</sup>C<sub>C</sub><sub>O2</sub>, δ<sup>13</sup>C<sub>C</sub><sub>H4</sub>, and δ<sup>13</sup>C<sub>OM</sub> (organic matter) of lake sediments in thermokarst lakes on the QTP. Results showed that the OM of the lake sediments was highly decomposed. The concentrations of DOC, CO<sub>2</sub> and CH<sub>4</sub> in the lake water on the QTP were 1.2–49.6 mg L<sup>–1</sup>, 3.6–45.0 μmol L<sup>–1</sup> and 0.28–3.0 μmol L<sup>–1</sup>, respectively. The highest CO<sub>2</sub> and CH<sub>4</sub> concentrations were recorded in July while the lowest values in September, which suggested that temperature had an effect on greenhouse gas production, although this pattern may also relate to thermal stratification of the water column. The results implied that thermokast lakes should be paid more attention to regarding carbon cycle and greenhouse gas emissions on the QTP.</p>

scholarly journals Greenhouse gas production and lipid biomarker distribution in Yedoma and Alas thermokarst lake sediments in Eastern Siberia

2021 ◽  
Author(s):  
Loeka L. Jongejans ◽  
Susanne Liebner ◽  
Christian Knoblauch ◽  
Kai Mangelsdorf ◽  
Mathias Ulrich ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Lake Sediments ◽  
Gas Production ◽  
Eastern Siberia ◽  
Thermokarst Lake ◽  
Lipid Biomarker

Processes affecting greenhouse gas production in experimental boreal reservoirs

2013 ◽  
Vol 27 (2) ◽  
pp. 567-577 ◽  
Author(s):  
Jason J. Venkiteswaran ◽  
Sherry L. Schiff ◽  
Vincent L. St. Louis ◽  
Cory J. D. Matthews ◽  
Natalie M. Boudreau ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Gas Production

A model-based approach to measuring denitrification and greenhouse gas production in lakes

2021 ◽  
Author(s):  
Juliet Falco Ajambo-Doherty
Keyword(s):  
Greenhouse Gas ◽  
Atmospheric Pressure ◽  
Schmidt Number ◽  
Spatial Scales ◽  
Gas Production ◽  
System Model ◽  
Biogeochemical Processes ◽  
Model Based ◽  
Temporal And Spatial ◽  
System Metabolism

An existing whole-system model based on changes in dissolved N₂ concentration was modified for lentic systems. Field validations carried out at Christie Lake in Dundas, ON and Turtle Pond in Stoney Creek, ON (Canada). New model inputs included air temperature, atmospheric pressure, relative humidity, wind velocity, and Schmidt number. Mont Carlo analysis was integrated into the model to better constrain error in model estimates of denitrification, whole-system metabolism, and greenhouse gas production. Denitrification rates ranged from -419-4415 µmol N.m-².h-¹ in Christie Lake and from 10-74 µmol N.m-².h-¹ in Turtle Pond. N₂O production ranged from 915-10,635 nmol N.m-².h-¹ in Christie Lake and from -344-131 nmol N.m-².h-¹ in Turtle Pond. The whole-system model allows for the examination of biogeochemical processes at ecologically significant temporal and spatial scales.

scholarly journals Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage

2014 ◽  
Vol 71 (2) ◽  
pp. 157-162 ◽  
Author(s):  
Alvaro Pires da Silva ◽  
Bruce C. Ball ◽  
Cássio Antonio Tormena ◽  
Neyde Fabiola Balarezo Giarola ◽  
Rachel Muylaert Locks Guimarães
Keyword(s):  
Greenhouse Gas ◽  
Soil Structure ◽  
Gas Production ◽  
No Tillage

Effects of water content and N addition on potential greenhouse gas production from two differently textured soils under laboratory conditions

2017 ◽  
Vol 64 (5) ◽  
pp. 654-667 ◽  
Author(s):  
Gianluigi Mazza ◽  
Alessandro Elio Agnelli ◽  
Maria Costanza Andrenelli ◽  
Alessandra Lagomarsino
Keyword(s):  
Greenhouse Gas ◽  
Water Content ◽  
Gas Production ◽  
N Addition ◽  
Laboratory Conditions

Effects of Salinity on Denitrification and Greenhouse Gas Production from Laboratory-incubated Tidal Forest Soils

Wetlands ◽  
2012 ◽  
Vol 32 (2) ◽  
pp. 347-357 ◽  
Author(s):  
John M. Marton ◽  
Ellen R. Herbert ◽  
Christopher B. Craft
Keyword(s):  
Greenhouse Gas ◽  
Forest Soils ◽  
Gas Production
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