|Size-dependent C, N and P stoichiometry of three submersed macrophytes along water depth gradients|
|Li, Wei1,2; Cao, Te1; Ni, Leyi1; Zhu, Guorong1; Zhang, Xiaolin1; Fu, Hui1; Song, Xin1; Xie, Ping1
|Source Publication||ENVIRONMENTAL EARTH SCIENCES
|Abstract||Variability in biomass allocation and growth rate of submersed macrophytes along water depth gradients may lead to different carbon (C), nitrogen (N) and phosphorus (P) stoichiometric characteristics. We conducted a field investigation to evaluate long-term effects of water depth on C, N and P stoichiometry of three submersed macrophytes, Potamogeton maackianus, Myriophyllum spicatum and Ceratophyllum demersum. The results indicated that shoot C:N, C:P and N:P of the plants tended to increase with elevated water depths, and patterns of biomass allocation along water depth gradients were more important than biological dilution of increased growth rates in affecting shoot C:N:P stoichiometric characteristics of the plants. Partial correlation analysis using shoot height and biomass as covariates revealed that water depth significantly affected C:P ratios in shoots of P. maackianus and M. spicatum and C:N ratio in shoots of M. spicatum, but did not affect N:P ratios of all the plants. Shoot stoichiometry of M. spicatum was most sensitive in response to water depth, followed by P. maackianus, and that of C. demersum was really unchanged with elevated water depths. Our results suggested that strategies in biomass allocation in organs, which depend largely on the species identity, rather than growth rates of the plants, contributed mainly to variation in the observed element stoichiometry along the water depth gradients.|
|WOS Headings||Science & Technology
; Life Sciences & Biomedicine
; Physical Sciences
|WOS Research Area||Environmental Sciences & Ecology
; Water Resources
|WOS Subject||Environmental Sciences
; Geosciences, Multidisciplinary
; Water Resources
|WOS Keyword||PHOSPHORUS STOICHIOMETRY
; AQUATIC MACROPHYTES
|Affiliation||1.Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China|
2.Nanchang Inst Technol, Inst Ecol & Environm Sci, Nanchang 330099, Peoples R China
Li, Wei,Cao, Te,Ni, Leyi,et al. Size-dependent C, N and P stoichiometry of three submersed macrophytes along water depth gradients[J]. ENVIRONMENTAL EARTH SCIENCES,2015,74(5):3733-3738.
Li, Wei.,Cao, Te.,Ni, Leyi.,Zhu, Guorong.,Zhang, Xiaolin.,...&Xie, Ping.(2015).Size-dependent C, N and P stoichiometry of three submersed macrophytes along water depth gradients.ENVIRONMENTAL EARTH SCIENCES,74(5),3733-3738.
Li, Wei,et al."Size-dependent C, N and P stoichiometry of three submersed macrophytes along water depth gradients".ENVIRONMENTAL EARTH SCIENCES 74.5(2015):3733-3738.
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