LaliberteKardolDidhamEtAl2017

Référence

Laliberté, E., Kardol, P., Didham, R.K., Teste, F.P., Turner, B.L., Wardle, D.A. (2017) Soil fertility shapes belowground food webs across a regional climate gradient. Ecology Letters, 20(10):1273-1284. (Scopus )

Résumé

Changes in soil fertility during pedogenesis affect the quantity and quality of resources entering the belowground subsystem. Climate governs pedogenesis, yet how climate modulates responses of soil food webs to soil ageing remains unexplored because of the paucity of appropriate model systems. We characterised soil food webs along each of four retrogressive soil chronosequences situated across a strong regional climate gradient to show that belowground communities are predominantly shaped by changes in fertility rather than climate. Basal consumers showed hump-shaped responses to soil ageing, which were propagated to higher-order consumers. There was a shift in dominance from bacterial to fungal energy channels with increasing soil age, while the root energy channel was most important in intermediate-aged soils. Our study highlights the overarching importance of soil fertility in regulating soil food webs, and indicates that belowground food webs will respond more strongly to shifts in soil resources than climate change. © 2017 John Wiley & Sons Ltd/CNRS

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@ARTICLE { LaliberteKardolDidhamEtAl2017,
    AUTHOR = { Laliberte, E. and Kardol, P. and Didham, R.K. and Teste, F.P. and Turner, B.L. and Wardle, D.A. },
    TITLE = { Soil fertility shapes belowground food webs across a regional climate gradient },
    JOURNAL = { Ecology Letters },
    YEAR = { 2017 },
    VOLUME = { 20 },
    NUMBER = { 10 },
    PAGES = { 1273-1284 },
    NOTE = { cited By 0 },
    ABSTRACT = { Changes in soil fertility during pedogenesis affect the quantity and quality of resources entering the belowground subsystem. Climate governs pedogenesis, yet how climate modulates responses of soil food webs to soil ageing remains unexplored because of the paucity of appropriate model systems. We characterised soil food webs along each of four retrogressive soil chronosequences situated across a strong regional climate gradient to show that belowground communities are predominantly shaped by changes in fertility rather than climate. Basal consumers showed hump-shaped responses to soil ageing, which were propagated to higher-order consumers. There was a shift in dominance from bacterial to fungal energy channels with increasing soil age, while the root energy channel was most important in intermediate-aged soils. Our study highlights the overarching importance of soil fertility in regulating soil food webs, and indicates that belowground food webs will respond more strongly to shifts in soil resources than climate change. © 2017 John Wiley & Sons Ltd/CNRS },
    AFFILIATION = { Centre sur la biodiversité, Institut de recherche en biologie végétale, Département de sciences biologiques, Université de Montréal 4101 Sherbrooke Est, Montréal, QC, Canada; School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, WA, Australia; Department of Forest Ecology & Management, Swedish University of Agricultural Sciences, Umeå, Sweden; CSIRO Land & Water, Centre for Environment and Life Sciences, 147 Underwood Avenue, Floreat, Perth, WA, Australia; Grupo de Estudios Ambientales, IMASL-CONICET & Universidad Nacional de San Luis, Av. Ejercito de los Andes 950, San Luis, Argentina; Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Panama; Asian School of the Environment, Nanyang Technological University, Singapore, Singapore },
    AUTHOR_KEYWORDS = { Bacteria; climate; energy channel; fungi; microarthropod; nematode; pedogenesis; precipitation; retrogression; succession },
    DOCUMENT_TYPE = { Letter },
    DOI = { 10.1111/ele.12823 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029589400&doi=10.1111%2fele.12823&partnerID=40&md5=8a18fc09089e9b92f17bd7c91229c2a9 },
}

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