Competition and Plant Trait Plasticity of Invasive (Wedelia trilobata) and Native Species (Wedelia chinensis, WC) under Nitrogen Enrichment and Flooding Condition

Nitrogen (N) is the important nutrition that regulatory plant functioning and environmental stability of invasive plant species under flooding (F) conditions. Little information clarifies the role of nitrogen enrichment and flooding on the invasive plant functional traits and competition with native competitors. Plant functional traits play an essential role in the successful growth of plants under different environmental conditions. Therefore, greenhouse pots experiment was conducted with invasive plant species (Wedelia trilobata, WT), and its native competitor (Wedelia chinensis, WC) in monoculture and cocultivation culture, along with flooding and nitrogen enrichment conditions. Considering the impact of flooding (F) and nitrogen (N) on an individual basis, the plant physiological traits of WC were nonsignificant compared to that of WT. However, in the combination of flooding × additional nitrogen (F.N, F.2N), plant physiological traits of WT were comparatively higher than those of WC, especially in cocultivation. In flooding × additional nitrogen (F.N and F.2N), better phenotypic plasticity at different plant traits makes WT more dominant in resource competition over WC. In conclusion, improved functional traits of WT under nitrogen enrichment and flooding conditions enhanced its competitiveness over native competitors.

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Identifying, preventing and controlling invasive plant species using their physiological traits

Ecological Economics ◽

10.1016/j.ecolecon.2004.06.021 ◽

2005 ◽

Vol 52 (3) ◽

pp. 397-416 ◽

Cited By ~ 22

Author(s):

David Finnoff ◽

John Tschirhart

Keyword(s):

Plant Species ◽

Invasive Plant ◽

Physiological Traits ◽

Invasive Plant Species

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Ecological risk assessment of potentially invasive alien plant species in Cibodas Biosphere Reserve, West Java, Indonesia

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/914/1/012035 ◽

2021 ◽

Vol 914 (1) ◽

pp. 012035

Author(s):

A Handayani ◽

D I Junaedi ◽

E A M Zuhud

Keyword(s):

Risk Assessment ◽

Plant Species ◽

Invasive Plant ◽

Biosphere Reserve ◽

Economic Benefits ◽

Invasive Plant Species ◽

Alien Plant ◽

Core Zone ◽

Invasive Alien Plant ◽

Wedelia Trilobata

Abstract More than 80 potentially invasive plant species have spread throughout the Cibodas Biosphere Reserve, Indonesia. Recently, research has shown that the surrounding community utilizes more than 50% of these species. Although this utilization provides social and economic benefits, it threatens the Cibodas Biosphere Reserve core zone ecologically. Therefore, this study conducted a risk assessment to determine the invasiveness level of utilized plant species. The evaluation was performed using Hawaii and Pacific Weed Risk Assessment (WRA) scheme. The results show that almost all the potentially invasive plant species are high risk, with scores ranging from 10 to 26, except for Fragaria vesca and Mentha arvensis. The highest WRA score was obtained for Lantana camara and followed by Austroeupatorium inulifolium, Cobaea scandens, Mikania cordata, Sonchus asper, Clidemia hirta, Piper aduncum, Sonchus arvensis, Cestrum aurantiacum, Dracaena fragrans, Passiflora ligularis, Podachaenium eminens, Thunbergia coccinea, and Wedelia trilobata. As most of these species were herbaceous plants obtained from cultivated areas, the risk of invasion into the core zone is low. Based on the findings, the recommended management option to control these species is harvesting, accompanied by containment. Through this method, the community can continue to use the species while controlling the population, thereby limiting their spread.

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