Final published version
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Biotic interactions drive ecosystem responses to exotic plant invaders
AU - Waller, Lauren P.
AU - Allen, Warwick J.
AU - Condron, L. M.
AU - Barratt, B. I. P.
AU - Machado Franca, Filipe
AU - Hunt, J. E.
AU - Koele, N.
AU - Orwin, Kate H.
AU - Steel, G. S.
AU - Tylianakis, Jason M.
AU - Wakelin, S. A.
AU - Dickie, Ian A.
PY - 2020/5/29
Y1 - 2020/5/29
N2 - Ecosystem process rates typically increase after plant invasion, but the extent to which this is driven by (i) changes in productivity, (ii) exotic species’ traits, or (iii) novel (non-coevolved) biotic interactions has never been quantified. We created communities varying in exotic plant dominance, plant traits, soil biota, and invertebrate herbivores and measured indicators of carbon cycling. Interactions with soil biota and herbivores were the strongest drivers of exotic plant effects, particularly on measures of soil carbon turnover. Moreover, plant traits related to growth and nutrient acquisition explained differences in the ways that exotic plants interacted with novel biota compared with natives. We conclude that novel biological interactions with exotic species are a more important driver of ecosystem transformation than was previously recognized.
AB - Ecosystem process rates typically increase after plant invasion, but the extent to which this is driven by (i) changes in productivity, (ii) exotic species’ traits, or (iii) novel (non-coevolved) biotic interactions has never been quantified. We created communities varying in exotic plant dominance, plant traits, soil biota, and invertebrate herbivores and measured indicators of carbon cycling. Interactions with soil biota and herbivores were the strongest drivers of exotic plant effects, particularly on measures of soil carbon turnover. Moreover, plant traits related to growth and nutrient acquisition explained differences in the ways that exotic plants interacted with novel biota compared with natives. We conclude that novel biological interactions with exotic species are a more important driver of ecosystem transformation than was previously recognized.
U2 - 10.1126/science.aba2225
DO - 10.1126/science.aba2225
M3 - Journal article
VL - 368
SP - 967
EP - 972
JO - Science
JF - Science
SN - 0036-8075
IS - 6494
ER -