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Variable associations of annual biomass increment with age, latitude and germination year in four tree species in Sweden
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Linnaeus University, Linnaeus Knowledge Environments, Water.ORCID iD: 0000-0001-9598-7618
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Linköping University, Sweden.ORCID iD: 0000-0001-8022-5004
Lund University, Sweden.
2024 (English)In: Trees, Forests and People, E-ISSN 2666-7193, Vol. 18, article id 100733Article in journal (Refereed) Published
Abstract [en]

Forests are pivotal for biodiversity, food webs, and human economies, and as carbon sinks their climate change mitigation potential is undisputed. However, whether trees continue to efficiently accumulate biomass at an increasing rate with age, how growth trajectories respond to climate change, and vary with latitude at species range margins is under debate. Here, we combine tree-ring data with biometric equation modeling to analyze how annual biomass increment varies according to tree age, species, latitude, and germination year. We generated 26,225 estimates of annual biomass increments for 136 individual trees, representing two evergreen gymnosperm conifer species ( Picea abies (L.) H.Karst., and Pinus sylvestris L.) and two deciduous angiosperm species ( Quercus spp. L. and Fagus sylvatica L.). Our dataset includes some old trees (range 150- 405 years), and samples from locations spanning >10 degrees latitude (55.0- 66.3 degrees N) in Sweden. Annual biomass increments varied considerably between species, years and among individual trees within stands. On average, biomass increment remained positive throughout the lifespan across trees, species, and latitudes. Age-specific biomass increment was higher in the deciduous than in the evergreen species and declined with increasing latitude within species. For spruce and beech, biomass increment increased significantly with germination year, possibly reflecting faster growth in recent times in response to a warmer climate. The findings have implications for forestry practices aimed at productivity, biodiversity conservation, and climate change mitigation.

Place, publisher, year, edition, pages
Elsevier, 2024. Vol. 18, article id 100733
Keywords [en]
Annual growth rate, Dendrochronology, Ecosystem services, Forest management, Global warming, Geographic latitude
National Category
Forest Science
Research subject
Natural Science, Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-133879DOI: 10.1016/j.tfp.2024.100733ISI: 001363946500001Scopus ID: 2-s2.0-85209239559OAI: oai:DiVA.org:lnu-133879DiVA, id: diva2:1920321
Available from: 2024-12-11 Created: 2024-12-11 Last updated: 2025-02-05Bibliographically approved

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Forsman, AndersFranzén, Markus

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