South Africa’s Pathways of Introduction and Dispersal and How They Have Changed Over Time

Faulkner, Katelyn T.; Burness, Amy; Byrne, Marcus J.; Kumschick, Sabrina; Peters, Koebraa; Robertson, Mark P.; Saccaggi, Davina L.; Weyl, Olaf L. F.; Williams, Vivienne L.

doi:10.1007/978-3-030-32394-3_12

Cited by 35 publications

(18 citation statements)

References 96 publications

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“…reduced seed set) was not tested. In contrast, no effects on the efficiency of bird pollination of native species was caused by the presence of the invasive Showy Banksia, Banksia speciosa (Erckie 2017). Banksia species are known to add significant amounts of nectar to the landscape during the peak flowering time of native CFR Proteaceae (Geerts et al 2013).…”

Section: Selected Examples Of Impacts On Native Species Biotic Interamentioning

confidence: 99%

Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa

Roux

Clusella‐Trullas

Mokotjomela

et al. 2020

Biological Invasions in South Africa

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Section: Selected Examples Of Impacts On Native Species Biotic Interamentioning

confidence: 99%

Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa

Roux

Clusella‐Trullas

Mokotjomela

et al. 2020

Biological Invasions in South Africa

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“…Part III (Chaps. 12-14) details the underlying factors influencing invasionshow species arrived in South Africa, and how they were dispersed once they got here (Faulkner et al 2020); the environmental factors, including geomorphology, soils, climate, extreme events (specifically droughts and floods), fire, and land uses that influence the success of alien species (Wilson et al 2020a); and the role of symbiotic interactions in affecting biological invasions in South Africa (Le Roux et al 2020). Many early introductions were deliberate, but accidental introductions are increasing in importance.…”

Section: Scope and Arrangement Of This Bookmentioning

confidence: 99%

Biological Invasions in South Africa: An Overview

Wilgen

Measey

Richardson

et al. 2020

Biological Invasions in South Africa

101

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South Africa has much to offer as a location for the study of biological invasions. It is an ecologically diverse country comprised of nine distinct terrestrial biomes, four recognised marine ecoregions, and two sub-Antarctic Islands. The country has a rich and chequered socio-political history, and a similarly varied history of species introductions. There has been a long tradition of large-scale conservation in the country, and efforts to manage and regulate invasions began in the nineteenth century, with some notable successes, but many setbacks. With the advent of democracy in the early 1990s, South Africa established large alien species control programmes to meet the dual demands of poverty alleviation and conservation, and has since pioneered regulatory approaches to address invasions. In terms of research, South Africa has played an important role in the development of invasion science globally. It continues to have one of the most active communities anywhere in the world, with strengths in theoretical and applied invasion science, and world-leading expertise in specific sub-disciplines (e.g. the classical biological control of invasive plants). In this introductory chapter to the book "Biological Invasions in South Africa", we highlight key events that have affected biological invasions, their management, and the research conducted over the past two centuries. In so doing, we build on earlier reviews-from a national situational review of the state of knowledge in

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“…This might be the case in this study whereby the land-use type of the areas currently invaded by P. afra changed from bare land and seasonally flooded wetlands in 1985 and 2005 respectively to shrub and grasslands in 2020. The changes in the land-use and land cover of Lafia from 1985 to 2020 as a result of environmental disturbances could have served as the gateway for the successful invasion of P. afra as confirmed by other studies whereby land-use change due to disturbances were promoters of invasion (Faulkner et al, 2020;Portgieter et al, 2020). If the spread of this plant is not controlled early, it poses serious threats on the large areas already predicted by the Maxent model to be affected which fall within the productive parts of the land-use in Lafia, Nigeria.…”

Section: Resultsmentioning

confidence: 59%

“…In addition, areas with high rate of disturbances in the land-use, for example urban areas are found to be more susceptible to the survival and spread of invasive plants (Portgieter et al, 2020). The construction of roads and railways in some cities in South Africa, which is a major disturbance, has been reported to have served as gateway for the rapid spread of many invasive plants (Faulkner et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Relating the Land-Use Changes to the Invasion of Pneumatopteris afra in Nigeria Using Remote Sensing

Akomolafe¹,

Rahmad²

2020

JST

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The study aimed at using satellite remote sensing in identifying the land-use changes that have occurred in Lafia, Nigeria within the past 35 years, especially in relation to the current and the predicted future invasion of a fern (Pneumatopteris afra). Landsat satellite images OLI/TIRS, ETM+ and TM within the interval of 15 years from 1985 to 2020 were used for the extraction of land-use. Six broad classification systems were used to classify the land-use changes by employing a supervised classification technique. In 1985, the bare land dominated the land-use having an area of 69156 ha while the wetland was the least having an area of 3412 ha. However, in 2020, the built-up area has dominated the land-use of Lafia with an area of 144645 ha (52.21%) while the wetland still remained the least with area of 1477 ha. This is obviously due to the geometric increase in the urbanization of this city. There was a consistent loss of the forests from 1985 to 2020 with an annual rate of loss of 0.46%. This resulted in a loss of 44329 ha of forests in 2020 out of the 47643 ha in 1985. This approximately leads to a total loss of 172,732,045 USD of forest products. The current invasion of Pneumatopteris afra in Lafia was found to fall within the shrub and grasses land-use class. This indicates that the landsat satellite could not detect the wetlands where the plant dominated due to its massive covering. This study calls for immediate conservation of the remaining forests and wetlands in Lafia to prevent further encroachments and invasion by plants.

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South Africa’s Pathways of Introduction and Dispersal and How They Have Changed Over Time

Abstract: Alien taxa have been introduced to South Africa through a wide variety of pathways, and have subsequently been intentionally or accidentally dispersed across the country. While many introductions to South Africa have been intentional, alien

Cited by 35 publications

References 96 publications

Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa

Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa

Biological Invasions in South Africa: An Overview

Relating the Land-Use Changes to the Invasion of Pneumatopteris afra in Nigeria Using Remote Sensing

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