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- Title
Flat-leaf submerged plants are more sensitive to invasion intensity and water nutrition levels than needle-leaf ones.
- Authors
Shen, Yi-Luan; Zhang, Shu-Yu; Yuan, Xiao-Fei; Sun, Kai; Cai, Jing-Fang; Xue, Jing-Jing; Zhang, Yu; A, Si-Ha; Yang, Li-Juan; Cheng, Rui; Li, Hong-Li; Lei, Guang-Chun
- Abstract
Plant invasion and water eutrophication severely damage wetland plant growth. However, the effects of plant invasion and water nutrient levels on the growth of submerged plants with different leaf types remain unclear. Here, we conducted a greenhouse experiment with three Eichhornia crassipes (Mart.) invasion intensity levels, two water nutrient levels, and three planting models (the flat-leaf plant Hydrilla verticillata (L.f.) Royle alone, the needle-leaf plant Myriophyllum verticillatum L. alone, and a mixture two species). Under the single planting mode, the biomass of H. verticillata increased, while that of M. verticillatum decreased with increasing water nutrient levels. Moreover, the submerged plant interspecific relationship changed from promotion to competition as the invasion intensity increased. Structural equation modeling showed that invasion intensity and water nutrient level had significant negative and positive effects on H. verticillata growth, respectively, but did not significantly affect M. verticillatum. Our findings highlight that H. verticillata (the needle-leaf plant) was more sensitive to invasion intensity and water nutrient levels than M. verticillatum (the flat-leaf plant), and the growth of H. verticillata was significantly inhibited by invasion intensity but benefited from more water nutrients.
- Subjects
WATER levels; POTAMOGETON; HYDRILLA; PLANT invasions; STRUCTURAL equation modeling; WATER hyacinth
- Publication
Hydrobiologia, 2023, Vol 850, Issue 18, p3849
- ISSN
0018-8158
- Publication type
Academic Journal
- DOI
10.1007/s10750-023-05226-2