the Southern African Plant Invaders Atlas
https://citsci.co.za/ http://academic.sun.ac.za/cib/ iNaturalist Hulbert (2016) South African Journal of Science
CITIZEN GENERAL ACTIVE PASSIVE SCIENCE SURVEILLANCE SURVEILLANCE SURVEILLANCE Community Agricultural Invasive plant REPORTED Members of the Farmers, land- groups, citizen extension surveillance public managers BY: science groups officers teams Sighting requests Sighting requests Surveying Regional Alert lists with EXAMPLE on radio, on specific sentinel sites and meetings and requirements for ACTIVITIES: television, and newsletters or e- identified high- presentations reporting newspapers mail list servers risk locations Fig. 3.3 from Wilson, Panetta, and Lindgren (2017) Detecting and Responding to Alien Plant Incursions, Cambridge University Press (based on Hester and Cacho 2017 Biological Invasions)
Ad hoc reports Lesley’s road-side surveys iNaturalist? Integration of historical data?
1979 – 2018 Lesley Henderson ~62 500 records in 1 427 QDGCs
1979 – 2018 SAPIA participants ~32 000 records in 1 519 QDS
Dissemination of data
Analysis of data
Species distribution models Rouget et al. 2004 DDI
Alien biomes Rouget et al. 2015 South African Journal of Botany
van Wilgen, B.W. & Wilson, J.R. (2018) SANBI and CIB Wilson et al. (2018) Journal of Applied Ecology, 55, 2612–2620
2000–2016: Naturalised plants increased from 601 to 773 species 5. Number and status of alien species 9. Alien species 20. Effectiveness of richness species treatments Biocontrol has slowed spread Henderson & Wilson (2017) ABC Bothalia
Department of Environmental Affairs (2014) Government Gazette Richardson et al. in press
Regularly used!
https://www.wits.ac.za/media/migration/files/cs-38933-fix/migrated-pdf/pdfs- 7/Alien%20Weeds%20and%20Invasive%20Plants%20A%20Complete%20guide%20to%20d eclared%20weeds%20and%20invaders%20in%20South%20Africa%20Author%20Lesley%20 Hendersoncompressed.pdf https://www.sanbi.org/wp-content/uploads/2018/11/National-Status-Report-web- 6MB.pdf http://www.arc.agric.za/arc-ppri/Pages/Newsletters.aspx http://invasives.org.za/ invasivespecies@sanbi.org jrwilson@sun.ac.za
Iris pseudacorus Jaca & Mkhize 2015 BioInvasions Records
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