Plant morphological traits and competition index comparisons of three invasive and native submerged plants

Huang, Xiaolong; Yu, Jinlei; Liu, Shuailing; Xie, Huixiang; He, Hongbo; Li, Kuanyi

doi:10.1051/kmae/2021012

Cited by 4 publications

(2 citation statements)

References 53 publications

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“…However, the performance of C. caroliniana was better and more stable than those of M. spicatum or H. verticillata in response to the low underwater PAR (for instance, 50%, 25% and 5% underwater PAR) treatments. According to a previous study, C. caroliniana does not have a better competitive ability than native co‐occurring submerged plants (Huang et al, 2021), but it is relatively resistant to herbivory by grass‐feeding snails (Huang et al, 2022). In this study, we provide new insights into the possible invasion mechanism of C. caroliniana under low underwater PAR levels, which may improve the ability to predict its invasion.…”

Section: Discussionmentioning

confidence: 98%

“…Five extra buckets with one of the three plants were also set up at the same time to measure the initial dry mass when the experiment started after 1 week of cultivation. Although culturing the three species independently is the ideal approach, the results of a previous study (Huang et al, 2021) performed in 2018 showed that competition among the three species under these conditions is relatively low, rendering coculturing acceptable.…”

Section: Methodsmentioning

confidence: 99%

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Underwater light attenuation inhibits native submerged plants and facilitates the invasive co‐occurring plant Cabomba caroliniana

Huang

Fan

Lü

et al. 2023

Diversity and Distributions

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Aim Decreasing in the diversity and distribution of native submerged plants have been widely observed in recent decades. Global underwater darkening, which is mainly caused by radiation dimming and a decrease in transparency due to, e.g. eutrophication, has emerged as a general trend that strongly hampers the growth of submerged plants in lakes by decreasing the light available for photosynthesis. However, few studies have attempted to compare the responses of native and invasive submerged plants to underwater darkening. In this study, we aimed to compare the effects of light attenuation on the growth and photosynthesis traits of native and invasive submerged plants. Location East China. Method Through field investigations and a mesocosm experiment, the responses of functional traits of two representative native [water thyme (Hydrilla verticillata), Eurasian watermilfoil (Myriophyllum spicatum)] and one invasive [Carolina fanwort (Cabomba caroliniana)] plant species to various environmental factors, notably to underwater light attenuation, were studied. Results Underwater photosynthetically active radiation (PAR) exerted a substantial effect on the relative coverage and abundance of the three studied submerged plants in their natural freshwater habitats. Invasive C. caroliniana showed relatively superior growth (total biomass and relative growth rate) and photosynthesis traits (maximum quantum yield of photosystem II Fv/Fm, chlorophyll a content, chlorophyll b content and the ratio of Chl a and b contents) compared to the two native plants under low underwater PAR conditions. In contrast, under high underwater PAR conditions, C. caroliniana showed the opposite response. Main Conclusions Light attenuation inhibits the growth of native submerged plants but facilitates the growth of invasive plant species. Restoration of freshwater lakes by reducing deterioration from underwater darkening (for instance, by reducing of external nutrients loading) may therefore constrain the growth and spread of the invasive C. caroliniana.

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Section: Discussionmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Underwater light attenuation inhibits native submerged plants and facilitates the invasive co‐occurring plant Cabomba caroliniana

Huang

Fan

Lü

et al. 2023

Diversity and Distributions

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Responses of morphological and physiological traits to herbivory by snails of three invasive and native submerged plants

Huang

Guan

et al. 2021

Journal of Plant Ecology

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Aims The submerged plant species Carolina fanwort (Cabomba caroliniana) has become a dominant invasive aquatic plant in the Lake Taihu Basin (LTB) in China. Introduced species may escape their original specialist enemies and encounter fewer enemies in their new environment. They were assumed to have suffered less herbivory than native species as they are relatively unpalatable (the enemy release hypothesis (ERH)). The objective of this study was to compare the responses of C. caroliniana with those of co-occurring native species to herbivory from native herbivores. Methods We conducted a mesocosm experiment to record the responses of C. caroliniana and two commonly co-occurring native submerged plant counterparts, water thyme (Hydrilla verticillata) and Eurasian watermilfoil (Myriophyllum spicatum), to herbivory by two native generalist gastropod snails, Radix swinhoei and Sinotaia quadrata. Plant morphological traits (total biomass, shoot/root (S/R) biomass ratio and relative growth rate (RGR)) and physiological traits (leaf total nonstructural carbohydrate (TNC), lignin, and cellulose) were recorded. Important Findings The snail S. quadrata rarely influenced the plant traits of the three submerged plants. With the increasing numbers of R. swinhoei treatments, most of the plant traits of H. verticillata and M. spicatum changed, while those of C. caroliniana showed a relatively stable fluctuation. This result indicates that C. caroliniana is more resistant to herbivory by the snail R. swinhoei, which is consistent with the ERH hypothesis. This finding indicates that herbivorous snail species contributes to the invasion of C. caroliniana, which potentially alters the species composition of submerged plants in the plant community.

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L-system based dynamic root growth model formulation of aquatic plants

Huang¹,

Li²,

Li³

2022

Journal of Lake Sciences

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Plant morphological traits and competition index comparisons of three invasive and native submerged plants

Cited by 4 publications

References 53 publications

Underwater light attenuation inhibits native submerged plants and facilitates the invasive co‐occurring plant Cabomba caroliniana

Underwater light attenuation inhibits native submerged plants and facilitates the invasive co‐occurring plant Cabomba caroliniana

Responses of morphological and physiological traits to herbivory by snails of three invasive and native submerged plants

L-system based dynamic root growth model formulation of aquatic plants

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