Marginal Calluna populations are more resistant to climate change, but not under high-nitrogen loads

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Marginal Calluna populations are more resistant to climate change, but not under high-nitrogen loads. / Meyer-Grünefeldt, Maren; Belz, Kristina; Calvo, Leonor et al.
In: Plant Ecology, Vol. 217, No. 1, 01.01.2016, p. 111-122.

Research output: Journal contributionsJournal articlesResearchpeer-review

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Meyer-Grünefeldt M, Belz K, Calvo L, Marcos E, Oheimb G, Härdtle W. Marginal Calluna populations are more resistant to climate change, but not under high-nitrogen loads. Plant Ecology. 2016 Jan 1;217(1):111-122. doi: 10.1007/s11258-015-0563-8

Bibtex

@article{94b567fdd57743d5baced6fce49192c0,
title = "Marginal Calluna populations are more resistant to climate change, but not under high-nitrogen loads",
abstract = "The dominant plant species of European heathlands Calluna vulgaris is considered vulnerable to drought and enhanced nitrogen (N) loads. However, impacts may vary across the distribution range of Calluna heathlands. We tested the hypothesis that Calluna of southern and eastern marginal populations (MP) are more resistant to drought events than plants of central populations (CP), and that this is mainly due to trait differences such as biomass allocation patterns. Furthermore, we hypothesised that N fertilisation can offset differences in drought susceptibility between CP and MP. We conducted a full-factorial 2-year greenhouse experiment with Calluna plants of CP and MP and quantified growth responses in terms of biomass production, allocation and tissue δ13C signatures. Biomass production, shoot–root ratios and tissue δ13C values of 1-year-old plants were higher for CP than for MP, indicating a higher drought susceptibility of CP. These trait differences were not observed for 2-year-old plants. N fertilisation increased shoot–root ratios of 1- and 2-year-old plants and across populations due to a stimulation of the aboveground biomass allocation. As a consequence, population-related differences in drought susceptibility were offset for N-fertilised plants. We concluded that Calluna plants originating from different populations developed adaptive traits to local climates, which determined their drought sensitivity. However, the higher drought resistance of MP can be attenuated by an N-induced increase in shoot–root ratios. This suggests that analyses on plant growth responses to global change should include multi-factor approaches with a focus on different populations throughout a species{\textquoteright} distribution range.",
keywords = "Ecosystems Research, Biomass allocation, Calluna vulgaris, Climate change, delta C-13 signatures, Drought, Nitrogen deposition, Biology",
author = "Maren Meyer-Gr{\"u}nefeldt and Kristina Belz and Leonor Calvo and Elena Marcos and Goddert Oheimb and Werner H{\"a}rdtle",
year = "2016",
month = jan,
day = "1",
doi = "10.1007/s11258-015-0563-8",
language = "English",
volume = "217",
pages = "111--122",
journal = "Plant Ecology",
issn = "1385-0237",
publisher = "Springer Science and Business Media B.V.",
number = "1",

}

RIS

TY - JOUR

T1 - Marginal Calluna populations are more resistant to climate change, but not under high-nitrogen loads

AU - Meyer-Grünefeldt, Maren

AU - Belz, Kristina

AU - Calvo, Leonor

AU - Marcos, Elena

AU - Oheimb, Goddert

AU - Härdtle, Werner

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The dominant plant species of European heathlands Calluna vulgaris is considered vulnerable to drought and enhanced nitrogen (N) loads. However, impacts may vary across the distribution range of Calluna heathlands. We tested the hypothesis that Calluna of southern and eastern marginal populations (MP) are more resistant to drought events than plants of central populations (CP), and that this is mainly due to trait differences such as biomass allocation patterns. Furthermore, we hypothesised that N fertilisation can offset differences in drought susceptibility between CP and MP. We conducted a full-factorial 2-year greenhouse experiment with Calluna plants of CP and MP and quantified growth responses in terms of biomass production, allocation and tissue δ13C signatures. Biomass production, shoot–root ratios and tissue δ13C values of 1-year-old plants were higher for CP than for MP, indicating a higher drought susceptibility of CP. These trait differences were not observed for 2-year-old plants. N fertilisation increased shoot–root ratios of 1- and 2-year-old plants and across populations due to a stimulation of the aboveground biomass allocation. As a consequence, population-related differences in drought susceptibility were offset for N-fertilised plants. We concluded that Calluna plants originating from different populations developed adaptive traits to local climates, which determined their drought sensitivity. However, the higher drought resistance of MP can be attenuated by an N-induced increase in shoot–root ratios. This suggests that analyses on plant growth responses to global change should include multi-factor approaches with a focus on different populations throughout a species’ distribution range.

AB - The dominant plant species of European heathlands Calluna vulgaris is considered vulnerable to drought and enhanced nitrogen (N) loads. However, impacts may vary across the distribution range of Calluna heathlands. We tested the hypothesis that Calluna of southern and eastern marginal populations (MP) are more resistant to drought events than plants of central populations (CP), and that this is mainly due to trait differences such as biomass allocation patterns. Furthermore, we hypothesised that N fertilisation can offset differences in drought susceptibility between CP and MP. We conducted a full-factorial 2-year greenhouse experiment with Calluna plants of CP and MP and quantified growth responses in terms of biomass production, allocation and tissue δ13C signatures. Biomass production, shoot–root ratios and tissue δ13C values of 1-year-old plants were higher for CP than for MP, indicating a higher drought susceptibility of CP. These trait differences were not observed for 2-year-old plants. N fertilisation increased shoot–root ratios of 1- and 2-year-old plants and across populations due to a stimulation of the aboveground biomass allocation. As a consequence, population-related differences in drought susceptibility were offset for N-fertilised plants. We concluded that Calluna plants originating from different populations developed adaptive traits to local climates, which determined their drought sensitivity. However, the higher drought resistance of MP can be attenuated by an N-induced increase in shoot–root ratios. This suggests that analyses on plant growth responses to global change should include multi-factor approaches with a focus on different populations throughout a species’ distribution range.

KW - Ecosystems Research

KW - Biomass allocation

KW - Calluna vulgaris

KW - Climate change

KW - delta C-13 signatures

KW - Drought

KW - Nitrogen deposition

KW - Biology

UR - http://www.scopus.com/inward/record.url?scp=84956618732&partnerID=8YFLogxK

U2 - 10.1007/s11258-015-0563-8

DO - 10.1007/s11258-015-0563-8

M3 - Journal articles

AN - SCOPUS:84956618732

VL - 217

SP - 111

EP - 122

JO - Plant Ecology

JF - Plant Ecology

SN - 1385-0237

IS - 1

ER -

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