Land use modulates resistance of grasslands against future climate and inter-annual climate variability in a large field experiment
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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in: Global Change Biology, Jahrgang 30, Nr. 7, e17418, 01.07.2024.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - Land use modulates resistance of grasslands against future climate and inter-annual climate variability in a large field experiment
AU - Korell, Lotte
AU - Andrzejak, Martin
AU - Berger, Sigrid
AU - Durka, Walter
AU - Haider, Sylvia
AU - Hensen, Isabell
AU - Herion, Yva
AU - Höfner, Johannes
AU - Kindermann, Liana
AU - Klotz, Stefan
AU - Knight, Tiffany M.
AU - Linstädter, Anja
AU - Madaj, Anna Maria
AU - Merbach, Ines
AU - Michalski, Stefan
AU - Plos, Carolin
AU - Roscher, Christiane
AU - Schädler, Martin
AU - Welk, Erik
AU - Auge, Harald
N1 - Publisher Copyright: Global Change Biology© 2024 The Author(s). Global Change Biology published by John Wiley & Sons Ltd.
PY - 2024/7/1
Y1 - 2024/7/1
N2 - Climate and land-use change are key drivers of global change. Full-factorial field experiments in which both drivers are manipulated are essential to understand and predict their potentially interactive effects on the structure and functioning of grassland ecosystems. Here, we present 8 years of data on grassland dynamics from the Global Change Experimental Facility in Central Germany. On large experimental plots, temperature and seasonal patterns of precipitation are manipulated by superimposing regional climate model projections onto background climate variability. Climate manipulation is factorially crossed with agricultural land-use scenarios, including intensively used meadows and extensively used (i.e., low-intensity) meadows and pastures. Inter-annual variation of background climate during our study years was high, including three of the driest years on record for our region. The effects of this temporal variability far exceeded the effects of the experimentally imposed climate change on plant species diversity and productivity, especially in the intensively used grasslands sown with only a few grass cultivars. These changes in productivity and diversity in response to alterations in climate were due to immigrant species replacing the target forage cultivars. This shift from forage cultivars to immigrant species may impose additional economic costs in terms of a decreasing forage value and the need for more frequent management measures. In contrast, the extensively used grasslands showed weaker responses to both experimentally manipulated future climate and inter-annual climate variability, suggesting that these diverse grasslands are more resistant to climate change than intensively used, species-poor grasslands. We therefore conclude that a lower management intensity of agricultural grasslands, associated with a higher plant diversity, can stabilize primary productivity under climate change.
AB - Climate and land-use change are key drivers of global change. Full-factorial field experiments in which both drivers are manipulated are essential to understand and predict their potentially interactive effects on the structure and functioning of grassland ecosystems. Here, we present 8 years of data on grassland dynamics from the Global Change Experimental Facility in Central Germany. On large experimental plots, temperature and seasonal patterns of precipitation are manipulated by superimposing regional climate model projections onto background climate variability. Climate manipulation is factorially crossed with agricultural land-use scenarios, including intensively used meadows and extensively used (i.e., low-intensity) meadows and pastures. Inter-annual variation of background climate during our study years was high, including three of the driest years on record for our region. The effects of this temporal variability far exceeded the effects of the experimentally imposed climate change on plant species diversity and productivity, especially in the intensively used grasslands sown with only a few grass cultivars. These changes in productivity and diversity in response to alterations in climate were due to immigrant species replacing the target forage cultivars. This shift from forage cultivars to immigrant species may impose additional economic costs in terms of a decreasing forage value and the need for more frequent management measures. In contrast, the extensively used grasslands showed weaker responses to both experimentally manipulated future climate and inter-annual climate variability, suggesting that these diverse grasslands are more resistant to climate change than intensively used, species-poor grasslands. We therefore conclude that a lower management intensity of agricultural grasslands, associated with a higher plant diversity, can stabilize primary productivity under climate change.
KW - ANPP
KW - climate change
KW - community dynamics
KW - Global Change Experimental Facility
KW - grazing
KW - land-use intensity
KW - mowing
KW - plant diversity
KW - Biology
UR - http://www.scopus.com/inward/record.url?scp=85199134293&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/2cc40ce4-ce68-3051-9e6f-48aab12bf4a0/
U2 - 10.1111/gcb.17418
DO - 10.1111/gcb.17418
M3 - Journal articles
C2 - 39036882
AN - SCOPUS:85199134293
VL - 30
JO - Global Change Biology
JF - Global Change Biology
SN - 1354-1013
IS - 7
M1 - e17418
ER -