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Sustainable and Resilient Agroecosystems Need Complexity of Soil Food Webs and Multivariate Soil Health Indicators
We need to adapt crop species and agricultural practices to produce high quantities of quality food for a growing world population, while also reducing the negative impact of agriculture on the environment to meet the targets of the Paris Agreement. It is increasingly recognised that healthy soils are at the heart of this endeavour, sustaining global geochemical cycles and the productivity of most terrestrial ecosystems. This ability of soils to support essential ecosystem services like nutrient cycling arises from diverse communities of soil organisms. Many ecosystem services are a function of how these soil organisms interact with each other, with the aboveground plant species and with the physio-chemical soil matrix. Here, we argue that multiple ecosystem processes and climate change resilience rely on diverse plant and soil communities with complex interactions among various actors carrying out complementary functions, rather than on individual indicator species on their own. We highlight areas of research which could be expanded to advance our understanding from single-species studies to the functional complexity of soil food webs and its integration into land management strategies with the aim to improve the resilience and sustainability of essential terrestrial ecosystems and the services they provide to the human population.
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Soil biology
Bodenbiologie
Biodiversity and ecosystem services
Biodiversität und Umweltleistungen