Plant Invasions in Asia

Shrestha, Bharat Babu; Witt, Arne; Shen, S. C.; Khuroo, Anzar A.; Shrestha, Uttam Babu; Naqinezhad, Alireza

doi:10.1007/978-3-030-89684-3_5

Cited by 11 publications

(2 citation statements)

References 169 publications

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“…Within the oil palm plantations they surveyed, 25% of species were alien, and these made up 62% of abundance in the community; oil palm and rubber plantations (both alien crop species) were floristically similar. It is therefore important for future research to improve data on measures of abundance and area covered by naturalized species with geo‐referenced distribution information, which is currently at low resolution for much of the Malesian region and confined to a subset of species (Shrestha et al., 2022). Developments in methods like remote sensing for mapping native and alien plant species (Huang & Asner, 2009; Walsh, 2018) will be crucial for obtaining these data in Malesia, where botanical collection effort has highly varied between islands (Middleton et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

Naturalizations have led to homogenization of the Malesian flora in the Anthropocene

Holmes,

Pelser,

Barcelona

et al. 2023

Journal of Biogeography

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AimWorldwide, floras are becoming homogenized at global scales, but regional patterns vary. Here, we present the first assessment for the Malesian phytogeographical region in terms of the timing of introductions, direction, magnitude and drivers of floristic change due to alien plant naturalizations.LocationMalesian phytogeographic region, including Southeast Asia and the Pacific.TaxonTracheophyta (vascular plants).MethodsWe compiled data on first records of naturalized plants in Malesia to investigate temporal trends in the rate and origin of introductions. We then calculated β‐diversity (including turnover and nestedness) for the native, naturalized and Anthropocene (native + naturalized) floras for each pair of island groups (36 pairs), and a homogenization index for the native and Anthropocene floras, using presence/absence data for 31,580 plant species. Mantel tests were used to investigate the geographic, climatic and anthropogenic correlates of dissimilarity and homogenization.ResultsAround 75% of all naturalized species documented to date were already reported for the first time within Malesia prior to 1950. This has led to homogenization between the historic (native) and contemporary (Anthropocene) floras for all island group pairs. Turnover was the most important process for driving compositional dissimilarity between island groups in Malesia in the native and Anthropocene floras, but homogenization resulted from decreases in nestedness and turnover. Differences in average taxonomic homogenization for island groups were associated with differences in their level of anthropogenic modification.Main ConclusionsThis study improves current understanding of the direction and drivers of floristic homogenization in one of the world's most diverse tropical regions. Alien plant introductions carry a long historical legacy in Malesia, and naturalizations of these plants have led to overall taxonomic homogenization of the region's flora. Expected increases in the magnitude of human modification, without appropriate policy, will likely lead to further reductions in the floristic uniqueness of island groups.

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Section: Discussionmentioning

confidence: 99%

Naturalizations have led to homogenization of the Malesian flora in the Anthropocene

Holmes,

Pelser,

Barcelona

et al. 2023

Journal of Biogeography

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“…China, as the world's third largest country, includes five climate zones: old-temperate, temperate, warmtemperate, subtropical, and tropical, which results in a rich biodiversity [13]. Almost any potential invasive alien species originating in one of these diverse climate zones throughout the world may find a suitable niche in China.…”

Section: Introductionmentioning

confidence: 99%

Potential distribution and ecological impacts of Acmella radicans (Jacquin) R.K. Jansen (a new Yunnan invasive species record) in China

Shen,

Zheng,

Zhang

et al. 2024

BMC Plant Biol

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Background Acmella radicans (Jacquin) R.K. Jansen is a new invasive species record for Yunnan Province, China. Native to Central America, it has also been recently recorded invading other parts of Asia. To prevent this weed from becoming a serious issue, an assessment of its ecological impacts and potential distribution is needed. We predicted the potential distribution of A. radicans in China using the MaxEnt model and its ecological impacts on local plant communities and soil nutrients were explored. Results Simulated training using model parameters produced an area under curve value of 0.974, providing a high degree of confidence in model predictions. Environmental variables with the greatest predictive power were precipitation of wettest month, isothermality, topsoil TEB (total exchangeable bases), and precipitation seasonality, with a cumulative contribution of more than 72.70% and a cumulative permutation importance of more than 69.20%. The predicted potential suitable area of A. radicans in China is concentrated in the southern region. Projected areas of A. radicans ranked as high and moderately suitable comprised 5425 and 26,338 km2, accounting for 0.06 and 0.27% of the Chinese mainland area, respectively. Over the 5 years of monitoring, the population density of A. radicans increased while at the same time the population density and importance values of most other plant species declined markedly. Community species richness, diversity, and evenness values significantly declined. Soil organic matter, total N, total P, available N, and available P concentrations decreased significantly with increasing plant cover of A. radicans, whereas pH, total K and available K increased. Conclusion Our study was the first to show that A. radicans is predicted to expand its range in China and may profoundly affect plant communities, species diversity, and the soil environment. Early warning and monitoring of A. radicans must be pursued with greater vigilance in southern China to prevent its further spread.

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Panda

2022

Plant Ecology of Indian Himalaya

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Plant Invasions in Asia

Cited by 11 publications

References 169 publications

Naturalizations have led to homogenization of the Malesian flora in the Anthropocene

Naturalizations have led to homogenization of the Malesian flora in the Anthropocene

Potential distribution and ecological impacts of Acmella radicans (Jacquin) R.K. Jansen (a new Yunnan invasive species record) in China

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