Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1111/nph.70193 |
Licence  |
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| Title (Primary) | Many non-native plant species are threatened in parts of their native range |
| Author | Staude, I.R.; Grenié, M.; Thomas, C.D.; Kühn, I.
; Zizka, A.; Golivets, M.
; Ledger, S.E.H.; Méndez, L. |
| Source Titel | New Phytologist |
| Year | 2025 |
| Department | BZF; iDiv |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Supplements | https://nph.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2Fnph.70193&file=nph70193-sup-0001-Supinfo.pdf |
| Keywords | alien species management; biodiversity redistribution; biotic novelty; conservation paradox; extinction risk; range shifts |
| Abstract | Global change is reshaping plant biogeography, with ever more plant species becoming non-native somewhere (Seebens et al., 2017). A key unresolved question is whether plants with non-native ranges also thrive in their native ranges, as often hypothesized (Paudel et al., 2024), or if their extralimital success coincides with population declines at home. The potential ‘conservation paradox’ (Marchetti & Engstrom, 2016) – where species establish populations outside their native ranges while facing threats within – has been observed in various animal groups (e.g. mammals, birds, reptiles and amphibians; Gibson & Yong, 2017; Lundgren et al., 2024), but has never been assessed globally in plants. Assessing the prevalence of this pattern adds an important dimension to how we understand non-native populations amid rapid biodiversity redistribution. Here, we examine the global extent of naturalized species (plants with self-sustaining non-native populations) that simultaneously face threats in their native ranges (Supporting Information Methods S1). We collated subglobal Red Lists for vascular plants from 103 countries and combined them with the Global Naturalized Alien Flora (GloNAF) database (van Kleunen et al., 2019), which tracks naturalizations in 176 countries. Species names were harmonized using the World Checklist of Vascular Plants (Govaerts et al., 2021). While GloNAF offers near-global data coverage, Red List data remain incomplete in parts of Africa and tropical Asia (Fig. S1), and assessment completeness varies across countries for both datasets (Methods S1). Nevertheless, these data offer the most comprehensive view on this topic to date. Among the 9195 naturalized plant species world-wide (excluding hybrids and apomictic genera), we found that 27.3% (n = 2513) are considered threatened in at least one country in their native range (Fig. 1a), based on national classifications standardized to International Union for Conservation of Nature (IUCN) global categories: Extinct, Critically Endangered, Endangered, or Vulnerable (Methods S1). Including Near Threatened (NT) species raises this to 31.1% (n = 2862). See Notes S1 for a discussion of potential under- or overestimation and underlying data considerations. This marked overlap between naturalization and subglobal threat highlights that range expansions and contractions often occur simultaneously – over one in four species with non-native populations are threatened somewhere within their native range. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=30775 |
| Staude, I.R., Grenié, M., Thomas, C.D., Kühn, I., Zizka, A., Golivets, M., Ledger, S.E.H., Méndez, L. (2025): Many non-native plant species are threatened in parts of their native range New Phytol. 10.1111/nph.70193 |
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