Modeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable states

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dc.contributor.authorStrange, Emily F.en_ZA
dc.contributor.authorLandi, Pietroen_ZA
dc.contributor.authorHill, Jaclyn M.en_ZA
dc.contributor.authorCoetzee, Julie A.en_ZA
dc.date.accessioned2019-09-12T10:21:39Z
dc.date.available2019-09-12T10:21:39Z
dc.date.issued2019
dc.descriptionCITATION: Strange, E. F., et al. 2019. Modeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable states. Frontiers in Plant Science, 10:889, doi:10.3389/fpls.2019.00889.en_ZA
dc.descriptionThe original publication is available at https://www.frontiersin.orgen_ZA
dc.descriptionPublication of this article was funded by the Stellenbosch University Open Access Funden_ZA
dc.description.abstractThe evidence for alternate stable states characterized by dominance of either floating or submerged plant dominance is well established. Inspired by an existing model and controlled experiments, we conceptually describe a dynamic that we have observed in the field using a simple model, the aim of which was to investigate key interactions of the shift between invasive floating and invasive submerged plant dominance, driven by the rapid decomposition of floating plants as a consequence of herbivory by biological control agents. This study showed that the rate of switch between floating and submerged invasive plant dominance, and the point in time at which the switch occurs, is dependent on the nutrient status of the water and the density of biological control agents on floating plant populations. Therefore, top-down invasive plant biological control efforts using natural enemies can affect systems on a wider scale than the intended agent – plant level, and can be significantly altered by bottom-up changes to the system, i.e., nutrient loading. The implications of this are essential for understanding the multiple roles invasive plants and their control have upon ecosystem dynamics. The results emphasize the importance of multi-trophic considerations for future invasive plant management and offer evidence for new pathways of invasion. The model outputs support the conclusion that, after the shift and in the absence of effective intervention, a submerged invasive stable state will persist.en_ZA
dc.description.urihttps://www.frontiersin.org/articles/10.3389/fpls.2019.00889/full
dc.description.versionPublisher's versionen_ZA
dc.format.extent9 pages : illustrations (some colour), 1 mapen_ZA
dc.identifier.citationStrange, E. F., et al. 2019. Modeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable states. Frontiers in Plant Science, 10:889, doi:10.3389/fpls.2019.00889en_ZA
dc.identifier.issn1664-462X (online)
dc.identifier.otherdoi:10.3389/fpls.2019.00889
dc.identifier.urihttp://hdl.handle.net/10019.1/106449
dc.language.isoen_ZAen_ZA
dc.publisherFrontiers Mediaen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectFloating macrophytesen_ZA
dc.subjectSubmerged macrophytesen_ZA
dc.subjectBiological control systems -- Mathematical modelsen_ZA
dc.subjectInvasive plants -- Biological control -- Mathematical modelsen_ZA
dc.subjectAquatic plants -- Biological control -- Mathematical modelsen_ZA
dc.titleModeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable statesen_ZA
dc.typeArticleen_ZA
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