Northward range expansion of rooting ungulates decreases detritivore and predatory mite abundances in boreal forests

Royal Society Open Science

Roswitha B. Ehnes¹  Astrid R. Taylor¹  Maartje J. Klapwijk¹  Christer Björkman¹  Thomas Kätterer¹  Nadia I. Maaroufi¹  Petter Kjellander²  Henrik Andrén² 

[1] Department of Ecology, Swedish University of Agricultural Sciences (SLU), 756 51 Uppsala, Sweden;Department of Ecology, Swedish University of Agricultural Sciences (SLU), Grimsö Wildlife Research Station, 730 91 Riddarhyttan, Sweden;

关键词: soil fauna;    grubbing;    invasion;    wild boar;    ecosystem services;    ecosystem functions;   

DOI  :  10.1098/rsos.211283

来源: DOAJ

【 摘 要 】

In the last few decades wild boar populations have expanded northwards, colonizing boreal forests. The soil disturbances caused by wild boar rooting may have an impact on soil organisms that play a key role in organic matter turnover. However, the impact of wild boar colonization on boreal forest ecosystems and soil organisms remains largely unknown. We investigated the effect of natural and simulated rooting on decomposer and predatory soil mites (total, adult and juvenile abundances; and adult–juvenile proportion). Our simulated rooting experiment aimed to disentangle the effects of (i) bioturbation due to soil mixing and (ii) removing organic material (wild boar food resources) on soil mites. Our results showed a decline in the abundance of adult soil mites in response to both natural and artificial rooting, while juvenile abundance and the relative proportion of adults and juveniles were not affected. The expansion of wild boar northwards and into new habitats has negative effects on soil decomposer abundances in boreal forests which may cascade through the soil food web ultimately affecting ecosystem processes. Our study also suggests that a combined use of natural and controlled experimental approaches is the way forward to reveal any subtle interaction between aboveground and belowground organisms and the ecosystem functions they drive.

【 授权许可】

Unknown