The mechanistic basis of changes in community assembly in relation to anthropogenic disturbance and productivity
Elo, M., Kareksela, S., Haapalehto, T., Vuori, H., Aapala, K., & Kotiaho, J. S. (2016). The mechanistic basis of changes in community assembly in relation to anthropogenic disturbance and productivity. Ecosphere, 7(4), Article e01310. https://doi.org/10.1002/ecs2.1310
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EcosphereTekijät
Päivämäärä
2016Tekijänoikeudet
© 2016 Elo et al. This is an open access article under the terms of the Creative Commons Attribution License.
Anthropogenic disturbance often causes changes in communities. However, the mechanistic
basis of these changes remains elusive. As all patterns in community ecology can be understood as a result
of four processes (speciation, selection, drift, and dispersal), the effect of disturbance should depend on
how disturbance disrupt these processes. We studied the effects of disturbance and productivity on species
richness, community composition, and community dispersion (i.e., variation in community composition)
in the vegetation of 120 boreal peatlands using null-model approach to determine whether community
assembly processes differ between pristine and disturbed sites. Sites represented three peatland ecosystem
types, each with two levels of productivity. Half of the sites were disturbed by drainage and half are pristine.
Pristine and disturbed sites showed similar species richness. However, their community composition
differed indicating a directional selection due to disturbance, whereas dispersion of disturbed and pristine
communities did not differ suggesting no change in the relative strength of selection and drift. Our results
suggest that understanding the combination of landscape level community changes and local selection
pressures is important when restoration of degraded ecosystems is undertaken.
...
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Ecological Society of AmericaISSN Hae Julkaisufoorumista
2150-8925Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/25671292
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The mechanistic basis of changes in community assembly in relation to anthropogenic disturbance and productivity
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