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- W4385478149 endingPage "106122" @default.
- W4385478149 startingPage "106122" @default.
- W4385478149 abstract "Herbivores strongly affect the ecological structure and functioning in seagrass bed ecosystems, but may exhibit density-dependent effects on primary producers and carbon sequestration. This study examined the effects of herbivorous snail (Cerithidea rhizophorarum) density on snail intraspecific competition and diet, dominant seagrass (Thalassia hemprichii) and epiphyte growth metrics, and sediment organic carbon (SOC). The growth rates of the herbivorous snail under low density (421 ind m−2) and mid density (842 ind m−2) were almost two times of those at extremely high density (1684 ind m−2), indicating strong intraspecific competition at high density. Herbivorous snails markedly reduced the epiphyte biomass on seagrass leaves. Additionally, the seagrass contribution to herbivorous snail as food source under high density was about 1.5 times of that under low density, while the epiphyte contribution under low density was 3 times of that under high density. A moderate density of herbivorous snails enhanced leaf length, carbon, nitrogen, total phenol and flavonoid contents of seagrasses, as well as surface SOC content and activities of polyphenol oxidase and β-glucosidase. However, high density of herbivorous snails decreased leaf glucose, fructose, detritus carbon, and total phenols contents of seagrasses, as well as surface SOC content and activities of polyphenol oxidase and β-glucosidase. Therefore, the effects of herbivorous snail on seagrass, epiphyte and SOC were density-dependent, and moderate density of herbivorous snail could be beneficial for seagrasses to increase productivity. This provided theoretical guidance for enhancing carbon sink in seagrass bed and its better conservation." @default.
- W4385478149 created "2023-08-03" @default.
- W4385478149 creator A5023107446 @default.
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- W4385478149 creator A5068257352 @default.
- W4385478149 creator A5071261595 @default.
- W4385478149 creator A5076283208 @default.
- W4385478149 creator A5080783540 @default.
- W4385478149 date "2023-09-01" @default.
- W4385478149 modified "2023-09-27" @default.
- W4385478149 title "Effects of herbivore on seagrass, epiphyte and sediment carbon sequestration in tropical seagrass bed" @default.
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