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| Titel |
The allocation of carbon in most common boreal dwarf shrubs compared to
Scots pine seedlings |
| VerfasserIn |
Liisa Kulmala, Maria del Rosario Dominguez Carrasco, Jussi Heinonsalo |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250147807
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| Publikation (Nr.) |
 EGU/EGU2017-12019.pdf |
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| Zusammenfassung |
| The floor of boreal pine forests consists of a dense layer of ground vegetation consisting
of dwarf shrubs, herbs, grasses, mosses and lichens. The primary productivity of
this vegetation is reported to be notable but the carbon (C) dynamics of the most
common dwarf shrub plant species, Calluna vulgaris, Vaccinium myrtillus and
Vaccinium vitis-idaea is poorly understood. In a controlled laboratory experiment, we
determined the full C balances of these dwarf shrubs for the first time and compared to
Pinus sylvestris by using long-term biomass accumulation, 13C pulse labelling,
CO2 exchange measurements and analysis of non-structural carbon. The observed
differences in the carbon dynamics are important in estimating the origin of belowground
CO2 fluxes in the field and in evaluating their biological relevance. Our results
will improve current understanding of CO2 sources and sinks in boreal forests. |
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