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Search: WFRF:(Münkemüller Tamara)

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  • Pontarp, Mikael, et al. (author)
  • The Latitudinal Diversity Gradient : Novel Understanding through Mechanistic Eco-evolutionary
  • 2019
  • In: Trends in Ecology & Evolution. - : Elsevier. - 0169-5347 .- 1872-8383. ; 34:3, s. 211-223
  • Research review (peer-reviewed)abstract
    • The latitudinal diversity gradient (LDG) is one of the most widely studied patterns in ecology, yet no consensus has been reached about its underlying causes. We argue that the reasons for this are the verbal nature of existing hypotheses, the failure to mechanistically link interacting ecological and evolutionary processes to the LDG, and the fact that empirical patterns are often consistent with multiple explanations. To address this issue, we synthesize current LDG hypotheses, uncovering their eco-evolutionary mechanisms, hidden assumptions, and commonalities. Furthermore, we propose mechanistic eco-evolutionary modeling and an inferential approach that makes use of geographic, phylogenetic, and trait-based patterns to assess the relative importance of different processes for generating the LDG.
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2.
  • Walker, Tom W. N., et al. (author)
  • Lowland plant arrival in alpine ecosystems facilitates a decrease in soil carbon content under experimental climate warming
  • 2022
  • In: eLIFE. - : eLife Sciences Publications, Ltd. - 2050-084X. ; 11
  • Journal article (peer-reviewed)abstract
    • Climate warming is releasing carbon from soils around the world1–3, constituting a positive climate feedback. Warming is also causing species to expand their ranges into new ecosystems4–9. Yet, in most ecosystems, whether range expanding species will amplify or buffer expected soil carbon loss is unknown10. Here we used two whole-community transplant experiments and a follow-up glasshouse experiment to determine whether the establishment of herbaceous lowland plants in alpine ecosystems influences soil carbon content under warming. We found that warming (transplantation to low elevation) led to a negligible decrease in alpine soil carbon content, but its effects became significant and 52% ± 31% (mean ± 95% CIs) larger after lowland plants were introduced at low density into the ecosystem. We present evidence that decreases in soil carbon content likely occurred via lowland plants increasing rates of root exudation, soil microbial respiration and CO2 release under warming. Our findings suggest that warming-induced range expansions of herbaceous plants have the potential to alter climate feedbacks from this system, and that plant range expansions among herbaceous communities may be an overlooked mediator of warming effects on carbon dynamics.
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