- Title
- Modeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable states
- Creator
- Strange, Emily F, Landi, Pietro, Hill, Jaclyn M, Coetzee, Julie A
- Subject
- To be catalogued
- Date
- 2019
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/444732
- Identifier
- vital:74263
- Identifier
- https://doi.org/10.3389/fpls.2019.00889
- Description
- The 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.
- Format
- 9 pages, pdf
- Language
- English
- Relation
- Frontiers in Plant Science, Strange, E.F., Landi, P., Hill, J.M. and Coetzee, J.A., 2019. Modeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable states. Frontiers in Plant Science, 10, p.889, Frontiers in Plant Science volume 10 number 1 1 9 2019 1664-462X
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Taylor and Francis Online Terms and Conditions Statement (https://www.tandfonline.com/terms-and-conditions)
- Hits: 115
- Visitors: 125
- Downloads: 13
Collections
Hill, Jaclyn Marie (Ms)
Coetzee, Julie A (Prof)
RU DST/NRF SARChI for Insects in Sustainable Agricultural Ecosystems
RU Department of Botany
RU Department of Zoology and Entomology
SDG 14. Life Below Water
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details | SOURCE1 | Modeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable states.pdf | 1 MB | Adobe Acrobat PDF | View Details |