Substrate-induced volatile organic compound emissions from compost-amended soils

Seewald, Martin S. A.; Singer, Wolfgang; Knapp, Brigitte A.; Franke‐Whittle, Ingrid H.; Hansel, Armin; Insam, Heribert

doi:10.1007/s00374-010-0445-0

Cited by 44 publications

(28 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Total C CO2 and C VOC emissions were generally higher for those soils with higher soil organic matter concentrations (Figure S9). This was expected given that soil organic matter levels often correspond to overall enhanced microbial activity (Barton et al, ; Schimel et al, ; Seewald et al, ).…”

Section: Discussionmentioning

confidence: 88%

Volatile Organic Compound Emissions From Soil Following Wetting Events

et al. 2018

View full text Add to dashboard Cite

Dynamics of carbon dioxide (CO2) emissions following the wetting of dry soil have been widely studied in field and laboratory settings. Nonmethane volatile organic compounds (VOCs) are also emitted from soil following a rain event and are evident from the characteristic smell of wet soil. Few studies have documented VOC emissions before and after soil rewetting. Soil emissions were studied using a dynamic flux chamber system purged with VOC‐free air, with identification and quantification of emissions performed by gas chromatography/mass spectrometry. All soils exhibited a rewetting‐induced pulse of VOC emissions, with VOC emissions 14 times higher (on average) in the few hours after rewetting compared to moist soils 2 days after rewetting. This VOC rewetting pulse mirrored the CO2 rewetting pulse (the so‐called “Birch Effect”) but was shorter in duration. Average VOC emissions were 5.0 ± 2.0% of CO2 emissions (molar C equivalent) and increased with increasing soil organic matter content (ρ = 0.40, ρ = 0.99 with one soil excluded). The amounts and types of VOCs varied with time since rewetting and across the five studied soil types, though acetone and small hydrocarbons were the dominant compounds emitted from all soils. Some of the VOCs emitted are likely important mediators of microbial activities and relevant to atmospheric chemical dynamics. Soil VOC emissions, similar to CO2 emissions, are strongly affected by rewetting events, and it is important to consider these rewetting dynamics when modeling soil and ecosystem VOC emissions and understand their relevance to terrestrial ecosystem functioning and atmospheric processes.

show abstract

Section: Discussionmentioning

confidence: 88%

Volatile Organic Compound Emissions From Soil Following Wetting Events

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In a boreal Scots pine forest, drought increased BVOC emissions (Lappalainen et al 2009), whereas in boreal peatlands water table drawdown decreased the emissions of isoprene, monoterpenes and other less reactive BVOCs (Tiiva et al 2009;Faubert et al 2010c). BVOC emissions from soil can be released from microbial processes depending on the aerobic conditions (Asensio et al 2007;Insam and Seewald 2010;Seewald et al 2010). In boreal peatland soil, water table controls the oxicity (Strack 2008) and this has potential impacts on BVOC emissions.…”

Section: Introductionmentioning

confidence: 99%

Non-methane biogenic volatile organic compound emissions from boreal peatland microcosms under warming and water table drawdown

et al. 2011

View full text Add to dashboard Cite

Boreal peatlands have significant emissions of non-methane biogenic volatile organic compounds (BVOCs). Climate warming is expected to affect these ecosystems both directly, with increasing temperature, and indirectly, through water table drawdown following increased evapotranspiration. We assessed the combined effect of warming and water table drawdown on the BVOC emissions from boreal peatland microcosms. We also assessed the treatment effects on the BVOC emissions from the peat soil after the 7-week long experiment. Emissions of isoprene, monoterpenes, sesquiterpenes, other reactive VOCs and other VOCs were sampled using a conventional chamber technique, collected on adsorbent and analyzed by GC-MS. Carbon emitted as BVOCs was less than 1% of the CO 2 uptake and up to 3% of CH 4 emission. Water table drawdown surpassed the direct warming effect and significantly decreased the emissions of all BVOC groups. Only isoprene emission was significantly increased by warming, parallel to the increased leaf number of the dominant sedge Eriophorum vaginatum. BVOC emissions from peat soil were higher under the control and warming treatments than water table drawdown, suggesting an increased activity of anaerobic microbial community. Our results suggest that boreal peatlands could have concomitant negative and positive radiative forcing effects on climate warming following the effect of water table drawdown. The observed decrease in CH 4 emission causes a negative radiative forcing while the increase in CO 2 emission and decrease in reactive BVOC emissions, which could reduce the cooling effect induced by the lower formation rate of secondary organic aerosols, both contribute to increased radiative forcing.

show abstract

“…Furthermore, it has been proposed that different BVOCs can promote or restrain bacterial and fungal growth (Effmert et al, 2012 and function as signaling molecules between belowground organisms (Wheatley, 2002, Bending et al, 2006, Schmidt et al, 2015, Tyc et al, 2017. Many BVOCs are also released without having any known specific function, for instance isopropanol, isoprene and different ketones may be emitted as intermediate products of microbial metabolism (Korpi et al, 2009, Insam andSeewald, 2010). In particular, a wide range of BVOCs are emitted under anaerobic conditions as products of fermentation processes (Insam and Seewald, 2010, Seewald et al, 2010, Faubert et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

“…Many BVOCs are also released without having any known specific function, for instance isopropanol, isoprene and different ketones may be emitted as intermediate products of microbial metabolism (Korpi et al, 2009, Insam andSeewald, 2010). In particular, a wide range of BVOCs are emitted under anaerobic conditions as products of fermentation processes (Insam and Seewald, 2010, Seewald et al, 2010, Faubert et al, 2011.…”

Section: Introductionmentioning

confidence: 99%