Näytä suppeat kuvailutiedot

dc.contributor.authorElo, Merja
dc.contributor.authorKareksela, Santtu
dc.contributor.authorHaapalehto, Tuomas
dc.contributor.authorVuori, Hilja
dc.contributor.authorAapala, Kaisu
dc.contributor.authorKotiaho, Janne
dc.date.accessioned2019-01-09T21:33:53Z
dc.date.available2019-01-09T21:33:53Z
dc.date.issued2018
dc.identifier.citationElo, M., Kareksela, S., Haapalehto, T., Vuori, H., Aapala, K. and Kotiaho, J. (2018). The mechanistic basis of changes in community assembly in relation to anthropogenic disturbance and productivity. 5th European Congress of Conservation Biology. doi: 10.17011/conference/eccb2018/107462
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/61920
dc.description.abstractIn the human-dominated world the natural drivers of species diversity, such as productivity and habitat heterogeneity, have been accompanied by anthropogenic disturbance resulting in increased extinction rates at global scale. However, decrease in species richness does not necessarily result in local decreases in species richness. Moreover, species richness provides limited information on processes that cause changes within and between communities, and 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 beta diversity (i.e. spatial variation in community composition) in the vegetation of 120 boreal peatlands. Using null model approach we determined 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 pristine and half were drained for forestry, which causes a major ecosystem level disturbance. Our results showed that high productivity sites encompassed higher species richness and different communities than low productivity sites. By contrast, we did not observe any difference in beta diversity between high and low productivity sites. Between pristine and drained sites neither species richness and nor beta diversity differed. Instead, peatland communities in drained were dissimilar to pristine sites, thus showing changes not attributed to drift but to selection, most likely based on altered hydrology, pH, and nutrient gradients. Moreover, the changes due to drainage were toward forest communities which could lead to landscape level homogenization. Effective ways to combine knowledge of the landscape level changes among disturbed areas and the understanding of the mechanisms affecting communities locally are important for reaching the ambitious global targets of restoring the degraded ecosystems. 1. Elo et al. (2016) The mechanistic basis of changes in community assembly in relation to anthropogenic disturbance and productivity. Ecosphere 7: e01310
dc.format.mimetypetext/html
dc.language.isoeng
dc.publisherOpen Science Centre, University of Jyväskylä
dc.relation.urihttps://peerageofscience.org/conference/eccb2018/107462/
dc.rightsCC BY 4.0
dc.titleThe mechanistic basis of changes in community assembly in relation to anthropogenic disturbance and productivity
dc.typeArticle
dc.type.urihttp://purl.org/eprint/type/ConferenceItem
dc.identifier.doi10.17011/conference/eccb2018/107462
dc.type.coarconference paper not in proceedings
dc.description.reviewstatuspeerReviewed
dc.type.versionpublishedVersion
dc.rights.copyright© the Authors, 2018
dc.rights.accesslevelopenAccess
dc.type.publicationconferenceObject
dc.relation.conferenceECCB2018: 5th European Congress of Conservation Biology. 12th - 15th of June 2018, Jyväskylä, Finland
dc.format.contentfulltext
dc.rights.urlhttp://creativecommons.org/licenses/by/4.0/


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  • ECCB 2018 [712]
    5th European Congress of Conservation Biology. 12th - 15th of June 2018, Jyväskylä, Finland

Näytä suppeat kuvailutiedot

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