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Related Concept Videos

Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
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Ecological Disturbance02:26

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An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.Ecological disturbances can be caused by an event as small as the trampling of underbrush to an incident as wide-ranging as a forest...
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Related Experiment Video

Updated: Jul 14, 2026

Assessment of Methane and Nitrous Oxide Fluxes from Paddy Field by Means of Static Closed Chambers Maintaining Plants Within Headspace
09:03

Assessment of Methane and Nitrous Oxide Fluxes from Paddy Field by Means of Static Closed Chambers Maintaining Plants Within Headspace

Published on: September 6, 2018

Cut-induced VOC emissions from agricultural grasslands.

B Davison1, A Brunner, C Ammann

  • 1Department of Environmental Sciences, Lancaster University, Lancaster LA1 4YQ, UK. b.davison@lancaster.ac.uk

Plant Biology (Stuttgart, Germany)
|June 1, 2007
PubMed
Summary

Proton transfer reaction mass spectrometry (PTR-MS) measured volatile organic compound (VOC) fluxes from grassland after cutting. Plant wounding compounds like hexenal were identified, with legumes emitting more VOCs than graminoids.

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Measurement of Greenhouse Gas Flux from Agricultural Soils Using Static Chambers
11:50

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Published on: August 3, 2014

Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Ecology

Background:

  • Volatile organic compounds (VOCs) play crucial roles in ecosystem processes.
  • Eddy covariance methods combined with fast-response instruments like proton transfer reaction mass spectrometry (PTR-MS) allow ecosystem-scale VOC flux measurements.
  • Understanding VOC emissions from agricultural grasslands, especially after disturbances like cutting, is vital.

Purpose of the Study:

  • To investigate VOC fluxes from agricultural grassland using PTR-MS during and after a cutting event.
  • To identify specific VOCs emitted and their sources, particularly those related to plant disturbance.
  • To compare VOC emission profiles between different plant types (legumes, forbs, graminoids).

Main Methods:

  • Utilized PTR-MS for real-time measurement of VOC fluxes over grassland.
  • Applied gas chromatography-mass spectrometry (GC-MS) and GC-FID-PTR-MS for compound identification.
  • Analyzed fluxes of specific ion masses (e.g., 73, 81, 83) and identified compounds like 2-butanone, (Z)-3-hexenal, (Z)-3-hexenol, and hexenyl acetates.

Main Results:

  • Significant VOC fluxes, including methanol, acetaldehyde, and acetone, were observed immediately after cutting and during hay drying.
  • Ion masses 73, 81, and 83 were identified as 2-butanone, (Z)-3-hexenal, and a mix of (Z)-3-hexenol and hexenyl acetates, respectively.
  • Emissions of hexenal, hexenols, and hexenyl acetates were linked to plant wounding from cutting.
  • Legumes and forbs exhibited a greater diversity of VOC species emissions compared to graminoids.

Conclusions:

  • Cutting events induce significant VOC emissions from agricultural grasslands, primarily due to plant wounding.
  • PTR-MS, when complemented with GC-MS techniques, is effective for identifying key VOCs and their ecosystem-scale fluxes.
  • Plant functional type influences the quantity and diversity of VOC emissions, highlighting the importance of plant community composition in atmospheric chemistry.