0000000000311570

AUTHOR

David Bastviken

showing 2 related works from this author

Abundance and δ13C values of fatty acids in lacustrine surface sediments: Relationships with in-lake methane concentrations

2018

Proxy-indicators in lake sediments provide the only approach by which the dynamics of in-lake methane cycling can be examined on multi-decadal to centennial time scales. This information is necessary to constrain how lacustrine methane production, oxidation and emissions are expected to respond to global change drivers. Several of the available proxies for reconstructing methane cycle changes of lakes rely on interpreting past changes in the abundance or relevance of methane oxidizing bacteria (MOB), either directly (e.g. via analysis of bacterial lipids) or indirectly (e.g. via reconstructions of the past relevance of MOB in invertebrate diet). However, only limited information is availabl…

0301 basic medicineArcheologyMethane Fatty acids Methane oxidizing bacteria Stable carbon isotopes Aquatic invertebrates Lakes Sediment010504 meteorology & atmospheric sciencesmethane oxidizing bacteriaaquatic invertebrates030106 microbiologyrasvahapotAquatic invertebratessedimentit01 natural sciencesmetaanijärvetMethanestable carbon isotopes03 medical and health scienceschemistry.chemical_compoundStable carbon isotopesAbundance (ecology)EcosystemOrganic matterFatty acidsEcology Evolution Behavior and Systematics0105 earth and related environmental scienceschemistry.chemical_classificationGlobal and Planetary Changeisotoopitδ13CLake ecosystemSedimentGeology15. Life on landselkärangattomatAnoxic watersLakeschemistrysedimentMethane oxidizing bacteria13. Climate actionEnvironmental chemistryinternationalta1181SedimentMethaneQuaternary Science Reviews
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Spatiotemporal patterns in methane flux and gas transfer velocity at low wind speeds: Implications for upscaling studies on small lakes

2016

Lakes contribute significantly to the global natural emissions of methane (CH4) and carbon dioxide. However, to accurately incorporate them into the continental carbon balance more detailed surveys of lacustrine greenhouse gas emissions are needed, especially in respect to spatiotemporal variability and to how this affects the upscaling of results. We investigated CH4 flux from a small, wind-shielded lake during 10 field trips over a 14 month period. We show that floating chambers may be used to calibrate the relationship between gas transfer velocity (k) and wind speed at 10 m height (U10) to the local system, in order to obtain more accurate estimates of diffusive CH4 flux than by applyin…

0106 biological sciencesHydrologyAtmospheric Science010504 meteorology & atmospheric sciencesEcology010604 marine biology & hydrobiologyPaleontologySoil ScienceFluxForestryAquatic ScienceAtmospheric sciences01 natural sciencesMethaneWind speedAtmospherechemistry.chemical_compoundchemistryGreenhouse gasCarbon dioxideEnvironmental scienceSpatial variabilityDiffusion (business)0105 earth and related environmental sciencesWater Science and TechnologyJournal of Geophysical Research: Biogeosciences
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