Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum
International audience Alpine tundra ecosystems are characterised by low productivity, due in part to low nutrient availability. These ecosystems are often dominated by 'stress tolerant' species such as Empetrum hermaphroditum, which contribute to stress by producing and releasing biologic...
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Online Access: | https://hal.science/halsde-00294531 https://doi.org/10.1111/j.0030-1299.2005.13524.x |
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ftunivnantes:oai:HAL:halsde-00294531v1 2023-05-15T15:17:44+02:00 Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum Shevtsova, A. Nilsson, M. C. Gallet, C. Zackrisson, O. Jaderlund, A. Forest Vegetation Ecology Department of Forest Ecology and Management Swedish University of Agricultural Sciences (SLU)-Swedish University of Agricultural Sciences (SLU) Laboratoire d'Ecologie Alpine (LECA) Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) 2005 https://hal.science/halsde-00294531 https://doi.org/10.1111/j.0030-1299.2005.13524.x en eng HAL CCSD Nordic Ecological Society info:eu-repo/semantics/altIdentifier/doi/10.1111/j.0030-1299.2005.13524.x halsde-00294531 https://hal.science/halsde-00294531 doi:10.1111/j.0030-1299.2005.13524.x ISSN: 0030-1299 EISSN: 1600-0706 Oikos https://hal.science/halsde-00294531 Oikos, 2005, 111 (3), pp.445-458. ⟨10.1111/j.0030-1299.2005.13524.x⟩ Arctic dwarf shrubs simulated environmental-change boreal forest neighbor removal nitrogen mineralization phosphorus availability secondary metabolism ecological function balance hypothesis plant-communities [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/article Journal articles 2005 ftunivnantes https://doi.org/10.1111/j.0030-1299.2005.13524.x 2023-02-08T05:23:57Z International audience Alpine tundra ecosystems are characterised by low productivity, due in part to low nutrient availability. These ecosystems are often dominated by 'stress tolerant' species such as Empetrum hermaphroditum, which contribute to stress by producing and releasing biologically active phenolic compounds into the environment. In a nine-year field experiment in alpine tundra, we investigated changes in growth and the levels (concentrations and contents) of foliar redox-active phenolics of current-year shoots of E. hermaphroditum in response to nine long-term environmental manipulation treatments. The treatments were aimed at reducing ecological stresses commonly present in high-latitude ecosystems, primarily stresses associated with low availability of N and other nutrients. Treatments included additions of various forms of N (single and combined applications of NH4+ and NO3-, inorganic N as a component of a full nutrient treatment, and protein as a source of organic N), and additions of glucose, activated carbon, and lime. Shoot growth and levels of foliar phenolics varied greatly between years, but the variation was not clearly explained by the inter-annual variation in macroclimate. Addition of inorganic N generally stimulated growth (especially stem biomass) and increased levels of leaf phenolics. The responses were, however, slow, and varied both between years and between individual inorganic N treatments. Compared to the other treatments, application of inorganic N as a component of a full nutrient treatment had the most consistent positive effect on shoot growth and phenolic content, but it did not affect the concentration of phenolics, suggesting that the treatment did not affect the net rate of phenolic production per unit shoot biomass. During some years of the experiment, the combined application of NH4+ and NO3- resulted in increased production of phenolics per unit biomass accumulation. In contrast to inorganic N fertilisation, application of organic N generally reduced both shoot ... Article in Journal/Newspaper Arctic Tundra Université de Nantes: HAL-UNIV-NANTES Arctic Oikos 111 3 445 458 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Arctic dwarf shrubs simulated environmental-change boreal forest neighbor removal nitrogen mineralization phosphorus availability secondary metabolism ecological function balance hypothesis plant-communities [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
Arctic dwarf shrubs simulated environmental-change boreal forest neighbor removal nitrogen mineralization phosphorus availability secondary metabolism ecological function balance hypothesis plant-communities [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment Shevtsova, A. Nilsson, M. C. Gallet, C. Zackrisson, O. Jaderlund, A. Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum |
topic_facet |
Arctic dwarf shrubs simulated environmental-change boreal forest neighbor removal nitrogen mineralization phosphorus availability secondary metabolism ecological function balance hypothesis plant-communities [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
International audience Alpine tundra ecosystems are characterised by low productivity, due in part to low nutrient availability. These ecosystems are often dominated by 'stress tolerant' species such as Empetrum hermaphroditum, which contribute to stress by producing and releasing biologically active phenolic compounds into the environment. In a nine-year field experiment in alpine tundra, we investigated changes in growth and the levels (concentrations and contents) of foliar redox-active phenolics of current-year shoots of E. hermaphroditum in response to nine long-term environmental manipulation treatments. The treatments were aimed at reducing ecological stresses commonly present in high-latitude ecosystems, primarily stresses associated with low availability of N and other nutrients. Treatments included additions of various forms of N (single and combined applications of NH4+ and NO3-, inorganic N as a component of a full nutrient treatment, and protein as a source of organic N), and additions of glucose, activated carbon, and lime. Shoot growth and levels of foliar phenolics varied greatly between years, but the variation was not clearly explained by the inter-annual variation in macroclimate. Addition of inorganic N generally stimulated growth (especially stem biomass) and increased levels of leaf phenolics. The responses were, however, slow, and varied both between years and between individual inorganic N treatments. Compared to the other treatments, application of inorganic N as a component of a full nutrient treatment had the most consistent positive effect on shoot growth and phenolic content, but it did not affect the concentration of phenolics, suggesting that the treatment did not affect the net rate of phenolic production per unit shoot biomass. During some years of the experiment, the combined application of NH4+ and NO3- resulted in increased production of phenolics per unit biomass accumulation. In contrast to inorganic N fertilisation, application of organic N generally reduced both shoot ... |
author2 |
Forest Vegetation Ecology Department of Forest Ecology and Management Swedish University of Agricultural Sciences (SLU)-Swedish University of Agricultural Sciences (SLU) Laboratoire d'Ecologie Alpine (LECA) Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Shevtsova, A. Nilsson, M. C. Gallet, C. Zackrisson, O. Jaderlund, A. |
author_facet |
Shevtsova, A. Nilsson, M. C. Gallet, C. Zackrisson, O. Jaderlund, A. |
author_sort |
Shevtsova, A. |
title |
Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum |
title_short |
Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum |
title_full |
Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum |
title_fullStr |
Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum |
title_full_unstemmed |
Effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of Empetrum hermaphroditum |
title_sort |
effects of long-term alleviation of nutrient limitation on shoot growth and foliar phenolics of empetrum hermaphroditum |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/halsde-00294531 https://doi.org/10.1111/j.0030-1299.2005.13524.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
ISSN: 0030-1299 EISSN: 1600-0706 Oikos https://hal.science/halsde-00294531 Oikos, 2005, 111 (3), pp.445-458. ⟨10.1111/j.0030-1299.2005.13524.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.0030-1299.2005.13524.x halsde-00294531 https://hal.science/halsde-00294531 doi:10.1111/j.0030-1299.2005.13524.x |
op_doi |
https://doi.org/10.1111/j.0030-1299.2005.13524.x |
container_title |
Oikos |
container_volume |
111 |
container_issue |
3 |
container_start_page |
445 |
op_container_end_page |
458 |
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1766347966928388096 |