Artificial wave breakers promote the establishment of alien aquatic plants in a shallow lake

Kim, Ji Yoon; Yano, Tokuya; Nakanishi, Ryota; Tagami, Hiroki; Nishihiro, Jun

doi:10.1007/s10530-019-01915-z

Cited by 3 publications

(1 citation statement)

References 53 publications

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“…philoxeroides and M. aquaticum can adapt to semiaquatic and aquatic environments and can compete with native plants for light, water, nutrients, and growing space in lakes, ditches, and canals, inhibiting native plant growth. − Previous studies have shown that A. philoxeroides grew actively at 0–1.0 m water depth, e.g., had new leaf sprouting and biomass accumulation. , It adapts actively at 1.0–2.0 m water depth via fast stem elongation and extensive pith cavity development. , M.…”

Section: Methodsmentioning

confidence: 99%

How Eutrophication Promotes Exotic Aquatic Plant Invasion in the Lake Littoral Zone?

Yuan

Sun

Guo

et al. 2023

Environ. Sci. Technol.

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Eutrophication and exotic species invasion are key drivers of the global loss of biodiversity and ecosystem functions in lakes. We selected two exotic plants (Alternanthera philoxeroides and Myriophyllum aquaticum) and two native plants (Myriophyllum spicatum and Vallisneria spinulosa) to elucidate the effect of eutrophication on exotic plant invasiveness. We found that (1) elevated nutrient favored invasion of exotic species and inhibited growth of native plants. Species combinations and plant densities of native plants had limited effects on the resistance to invasion of the exotics. (2) A. philoxeroides featured the tightest connectivity among traits, which is consistent with its high competitive ability. Although eutrophication caused physiological stress to A. philoxeroides, it could effectively regulate enzyme activity and alleviate the stress. (3) M. aquaticum possessed strong tolerance to habitat disturbance and was highly disruptive to the surrounding plants. Eutrophication will exacerbate the adverse effects of M. aquaticum on the littoral ecosystem. (4) Nutrient enrichment reduced the biomass and relative growth rates of V. spinulosa and lowered phenolics and starch contents of M. spicatum, thereby making them more susceptible to habitat fluctuations. Overall, our study highlights how eutrophication alters the invasiveness of exotic plants and the resistance of native plants in the littoral zone, which is of relevance in a world with intensified human activities.

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