Simultaneous loss of soil biodiversity and functions along a copper contamination gradient: when soil goes to sleep

Naveed, Muhammad ORCID:, Moldrup, Per, Arthur, Emmanuel, Holmstrup, Martin, Nicolaisen, Mogens, Tuller, Markus, Herath, Lasantha, Hamamoto, Shoichiro, Kawamoto, Ken, Komatsu, Toshiko, Vogel, Hans-Jörg and Wollesen de Jonge, Lis (2014) Simultaneous loss of soil biodiversity and functions along a copper contamination gradient: when soil goes to sleep. Soil Science Society of America Journal, 78 (4). p. 1239. ISSN 0361-5995

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The impact of biodiversity loss on soil functions is well established via laboratory experiments that generally consider soil biota groups in isolation from each other, a condition rarely present in field soils. As a result, our knowledge about anthropogenic-induced changes in biodiversity and associated soil functions is limited. We quantified an array of soil biological constituents (plants, earthworms, nematodes, bacteria, and fungi) to explore their interactions and to characterize their influence on various soil functions (habitat for soil organisms, air and water regulation, and recycling of nutrients and organic waste) along a legacy Cu pollution gradient. Increasing Cu concentrations had a detrimental impact on both plant growth and species richness. Belowground soil biota showed similar responses, with their sensitivity to elevated Cu concentrations decreasing in the order: earthworms > bacteria > nematodes > fungi. The observed loss of soil biota adversely affected natural soil bioturbation, aggregate formation and stabilization, and decomposition and mineralization processes and therefore resulted in compacted soil with narrow pore size distributions and overall smaller pores, restricted air and water storage and flow, and impeded C, N, and P cycling. The simultaneous evolution of soil biodiversity and functions along the Cu gradient emphasized the key role of soil life in controlling ecosystem services. Furthermore, results indicated that different soil biodiversity and functional indicators started to decline (10% loss) within a Cu concentration range of 110 to 800 mg total Cu kg−1.

Item Type: Article
Identifier: 10.2136/sssaj2014.02.0052
Subjects: Construction and engineering > Civil and environmental engineering
Depositing User: Muhammad Naveed
Date Deposited: 17 May 2018 11:33
Last Modified: 06 Feb 2024 15:57

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