The contribution of photodegradation to litter decomposition in a temperate forest gap and understorey

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dc.contributor.author Wang, Qing-Wei
dc.contributor.author Pieriste, Marta
dc.contributor.author Liu, Chenggang
dc.contributor.author Kenta, Tanaka
dc.contributor.author Robson, Thomas Matthew
dc.contributor.author Kurokawa, Hiroko
dc.date.accessioned 2021-03-19T07:20:01Z
dc.date.available 2021-03-19T07:20:01Z
dc.date.issued 2021-03
dc.identifier.citation Wang , Q-W , Pieriste , M , Liu , C , Kenta , T , Robson , T M & Kurokawa , H 2021 , ' The contribution of photodegradation to litter decomposition in a temperate forest gap and understorey ' , New Phytologist , vol. 229 , no. 5 , pp. 2625-2636 . https://doi.org/10.1111/nph.17022
dc.identifier.other PURE: 161342066
dc.identifier.other PURE UUID: 9b2c2616-eba3-4618-930a-948662e55c00
dc.identifier.other WOS: 000594249400001
dc.identifier.other ORCID: /0000-0002-8631-796X/work/90907367
dc.identifier.uri http://hdl.handle.net/10138/328207
dc.description.abstract Litter decomposition determines carbon (C) backflow to the atmosphere and ecosystem nutrient cycling. Although sunlight provides the indispensable energy for terrestrial biogeochemical processes, the role of photodegradation in decomposition has been relatively neglected in productive mesic ecosystems. To quantify the effects of this variation, we conducted a factorial experiment in the understorey of a temperate deciduous forest and an adjacent gap, using spectral-attenuation-filter treatments. Exposure to the full spectrum of sunlight increased decay rates by nearly 120% and the effect of blue light contributed 75% of this increase. Scaled-up to the whole forest ecosystem, this translates to 13% loss of leaf-litter C through photodegradation over the year of our study for a scenario of 20% gap. Irrespective of the spectral composition, herbaceous and shrub litter lost mass faster than tree litter, with photodegradation contributing the most to surface litter decomposition in forest canopy gaps. Across species, the initial litter lignin and polyphenolic contents predicted photodegradation by blue light and ultraviolet B (UV-B) radiation, respectively. We concluded that photodegradation, modulated by litter quality, is an important driver of decomposition, not just in arid areas, but also in mesic ecosystems such as temperate deciduous forests following gap opening. en
dc.format.extent 12
dc.language.iso eng
dc.relation.ispartof New Phytologist
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject biogeochemical cycle
dc.subject functional traits
dc.subject mesic ecosystems
dc.subject model simulation
dc.subject ultraviolet radiation
dc.subject PLANT LITTER
dc.subject LIGNIN
dc.subject RADIATION
dc.subject BEECH
dc.subject 11831 Plant biology
dc.title The contribution of photodegradation to litter decomposition in a temperate forest gap and understorey en
dc.type Article
dc.contributor.organization Canopy Spectral Ecology and Ecophysiology
dc.contributor.organization Organismal and Evolutionary Biology Research Programme
dc.contributor.organization Viikki Plant Science Centre (ViPS)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1111/nph.17022
dc.relation.issn 0028-646X
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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