Multifunctionality debt in global drylands linked to past biome and climate

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Title: Multifunctionality debt in global drylands linked to past biome and climate
Authors: Ye, Jian‐Sheng | Delgado Baquerizo, Manuel | Soliveres, Santiago | Maestre, Fernando T.
Research Group/s: Gestión de Ecosistemas y de la Biodiversidad (GEB)
Center, Department or Service: Universidad de Alicante. Departamento de Ecología
Keywords: Arid climate | Last Glacial Maximum | Nutrient stocks | Nutrient transformation rates | Paleoclimate | Plant productivity | Plant species richness | Precipitation
Knowledge Area: Ecología
Issue Date: Jun-2019
Publisher: John Wiley & Sons
Citation: Global Change Biology. 2019, 25(6): 2152-2161. doi:10.1111/gcb.14631
Abstract: Past vegetation and climatic conditions are known to influence current biodiversity patterns. However, whether their legacy effects affect the provision of multiple ecosystem functions, that is, multifunctionality, remains largely unknown. Here we analyzed soil nutrient stocks and their transformation rates in 236 drylands from six continents to evaluate the associations between current levels of multifunctionality and legacy effects of the Last Glacial Maximum (LGM) desert biome distribution and climate. We found that past desert distribution and temperature legacy, defined as increasing temperature from LGM, were negatively correlated with contemporary multifunctionality even after accounting for predictors such as current climate, soil texture, plant species richness, and site topography. Ecosystems that have been deserts since the LGM had up to 30% lower contemporary multifunctionality compared with those that were nondeserts during the LGM. In addition, ecosystems that experienced higher warming rates since the LGM had lower contemporary multifunctionality than those suffering lower warming rates, with a ~9% reduction per extra degree Celsius. Past desert distribution and temperature legacies had direct negative effects, while temperature legacy also had indirect (via soil sand content) negative effects on multifunctionality. Our results indicate that past biome and climatic conditions have left a strong “functionality debt” in global drylands. They also suggest that ongoing warming and expansion of desert areas may leave a strong fingerprint in the future functioning of dryland ecosystems worldwide that needs to be considered when establishing management actions aiming to combat land degradation and desertification.
Sponsor: China Scholarship Council; National Natural Science Foundation of China, Grant/Award Number: 31570467; Horizon 2020 Framework Programme, Grant/Award Number: 702057, 242658 and 647038; Ramón y Cajal contract, Grant/Award Number: RYC-2016-20604; European Research Council
ISSN: 1354-1013 (Print) | 1365-2486 (Online)
DOI: 10.1111/gcb.14631
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2019 John Wiley & Sons Ltd
Peer Review: si
Publisher version:
Appears in Collections:Research funded by the EU
INV - GEB - Artículos de Revistas

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