Nematode community responses to range-expanding and native plant communities in original and new range soils

TY - JOUR

T1 - Nematode community responses to range-expanding and native plant communities in original and new range soils

AU - Wilschut, R.A.

AU - Kostenko, O.

AU - Koorem, K.

AU - van der Putten, W.H.

N1 - 6578, TE; Data archiving: data archived in Dryad

PY - 2018

Y1 - 2018

N2 - Many plant species expand their range to higher latitudes in response to climatechange. However, it is poorly understood how biotic interactions in the new rangediffer from interactions in the original range. Here, in a mesocosm experiment, weanalyze nematode community responses in original and new range soils to plantcommunities with either (a) species native in both the original and new range, (b)range-expanding species related to these natives (related range expanders), or (c)range expanders without native congeneric species in the new range (unrelatedrange expanders). We hypothesized that nematode community shifts betweenranges are strongest for unrelated range expanders and minimal for plant speciesthat are native in both ranges. As a part of these community shifts, we hypothesizedthat range expanders, but not natives, would accumulate fewer root-feeding nematodesin their new range compared to their original range. Analyses of responses ofnematodes from both original and new ranges and comparison between range expanderswith and without close relatives have not been made before. Our study revealsthat none of the plant communities experienced evident nematode communityshifts between the original and new range. However, in soils from the new range,root-feeding nematode communities of natives and related range expanders weremore similar than in soils from the original range, whereas the nematode communityof unrelated range expanders was distinct from the communities of natives and relatedrange expanders in soils from both ranges. The abundances of root-feedingnematodes were comparable between the original and new range for all plant communities.Unexpectedly, unrelated range expanders overall accumulated most rootfeedingnematodes, whereas related range expanders accumulated fewest. Weconclude that nematode communities associated with native and range-expandingplant species differ between the original and the new range, but that rangeexpandingplant species do not accumulate fewer root-feeding nematodes in theirnew than in their original range.

AB - Many plant species expand their range to higher latitudes in response to climatechange. However, it is poorly understood how biotic interactions in the new rangediffer from interactions in the original range. Here, in a mesocosm experiment, weanalyze nematode community responses in original and new range soils to plantcommunities with either (a) species native in both the original and new range, (b)range-expanding species related to these natives (related range expanders), or (c)range expanders without native congeneric species in the new range (unrelatedrange expanders). We hypothesized that nematode community shifts betweenranges are strongest for unrelated range expanders and minimal for plant speciesthat are native in both ranges. As a part of these community shifts, we hypothesizedthat range expanders, but not natives, would accumulate fewer root-feeding nematodesin their new range compared to their original range. Analyses of responses ofnematodes from both original and new ranges and comparison between range expanderswith and without close relatives have not been made before. Our study revealsthat none of the plant communities experienced evident nematode communityshifts between the original and new range. However, in soils from the new range,root-feeding nematode communities of natives and related range expanders weremore similar than in soils from the original range, whereas the nematode communityof unrelated range expanders was distinct from the communities of natives and relatedrange expanders in soils from both ranges. The abundances of root-feedingnematodes were comparable between the original and new range for all plant communities.Unexpectedly, unrelated range expanders overall accumulated most rootfeedingnematodes, whereas related range expanders accumulated fewest. Weconclude that nematode communities associated with native and range-expandingplant species differ between the original and the new range, but that rangeexpandingplant species do not accumulate fewer root-feeding nematodes in theirnew than in their original range.

KW - NIOO

UR - http://dx.doi.org/10.5061/dryad.t1f10sr

U2 - 10.1002/ece3.4505

DO - 10.1002/ece3.4505

M3 - Article

SN - 2045-7758

VL - 8

SP - 10288

EP - 10297

JO - Ecology and Evolution

JF - Ecology and Evolution

IS - 20

ER -