Syzygium australe (J.C.Wendl. ex Link) B. Hyland (Myrtaceae) in South Africa: current distribution and invasion potentia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F23%3A00576804" target="_blank" >RIV/67985939:_____/23:00576804 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3391/bir.2023.12.3.01" target="_blank" >https://doi.org/10.3391/bir.2023.12.3.01</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3391/bir.2023.12.3.01" target="_blank" >10.3391/bir.2023.12.3.01</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Syzygium australe (J.C.Wendl. ex Link) B. Hyland (Myrtaceae) in South Africa: current distribution and invasion potentia

Popis výsledku v původním jazyce

Syzygium australe (Australian brush-cherry, the names Eugenia australis and Syzygium paniculatum have been misapplied to this species in some regions) is native to Australia. It has been introduced and used as an ornamental plant in several regions outside its native range and is invasive in Hawaii and New Zealand. The species was first recorded in South Africa in 1968 and has become a popular and widely traded and planted ornamental species. The first reports of naturalisation in the country appeared in the first decade of the 21st century, the species was subsequently flagged as a priority for investigation and potential regulation as an invasive species. In this paper we mapped the current distribution of S. australe in South Africa, determined its introduction status, and modelled its potential distribution. We also investigated whether cultivated plants are producing fertile seeds and compared such seeds with those produced by plants growing outside cultivation. We recorded S. australe at 268 sites across the country, clustered primarily in the Western Cape province. Naturalised populations have established at three sites, all in the Western Cape. Surveys of these established populations revealed ~ 4000 plants covering an area of ~ 7 ha (representing ~ 2 ha condensed canopy area). These populations were flourishing in riparian habitats in urban areas. Species distribution models suggest that S. australe has the potential to expand its current range in South Africa, primarily in coastal regions. Seeds of both cultivated and naturalised plants showed similar high levels of germinability (both 100%). Building on these findings, we conducted a risk analysis using the Risk Analysis of Alien Taxa Framework, and found S. australe to be of high invasion risk in South Africa. We recommend that all populations outside cultivation be controlled, and that propagation and trade be prohibited. However, except where they occur near riparian habitats, garden plantings do not need to be prioritised for immediate control, and can rather be phased out over time.

Název v anglickém jazyce

Syzygium australe (J.C.Wendl. ex Link) B. Hyland (Myrtaceae) in South Africa: current distribution and invasion potentia

Popis výsledku anglicky

Syzygium australe (Australian brush-cherry, the names Eugenia australis and Syzygium paniculatum have been misapplied to this species in some regions) is native to Australia. It has been introduced and used as an ornamental plant in several regions outside its native range and is invasive in Hawaii and New Zealand. The species was first recorded in South Africa in 1968 and has become a popular and widely traded and planted ornamental species. The first reports of naturalisation in the country appeared in the first decade of the 21st century, the species was subsequently flagged as a priority for investigation and potential regulation as an invasive species. In this paper we mapped the current distribution of S. australe in South Africa, determined its introduction status, and modelled its potential distribution. We also investigated whether cultivated plants are producing fertile seeds and compared such seeds with those produced by plants growing outside cultivation. We recorded S. australe at 268 sites across the country, clustered primarily in the Western Cape province. Naturalised populations have established at three sites, all in the Western Cape. Surveys of these established populations revealed ~ 4000 plants covering an area of ~ 7 ha (representing ~ 2 ha condensed canopy area). These populations were flourishing in riparian habitats in urban areas. Species distribution models suggest that S. australe has the potential to expand its current range in South Africa, primarily in coastal regions. Seeds of both cultivated and naturalised plants showed similar high levels of germinability (both 100%). Building on these findings, we conducted a risk analysis using the Risk Analysis of Alien Taxa Framework, and found S. australe to be of high invasion risk in South Africa. We recommend that all populations outside cultivation be controlled, and that propagation and trade be prohibited. However, except where they occur near riparian habitats, garden plantings do not need to be prioritised for immediate control, and can rather be phased out over time.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/EF18_053%2F0017850" target="_blank" >EF18_053/0017850: Mobility 2020</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

BioInvasions Records

ISSN

2242-1300

e-ISSN

2242-1300

Svazek periodika

12

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

FI - Finská republika

Počet stran výsledku

12

Strana od-do

637-648

Kód UT WoS článku

001108757700005

EID výsledku v databázi Scopus

2-s2.0-85175208193