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[Distribution Characteristics and Influencing Factors of Abundant and Rare Planktonic Microeukaryotes in Jinsha River].
Yan, Bing-Cheng; Cui, Ge; Sun, Sheng-Hao; Wang, Pei-Fang; Wang, Chao; Wu, Cheng; Chen, Juan.
Afiliação
  • Yan BC; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China.
  • Cui G; College of Environment, Hohai University, Nanjing 210098, China.
  • Sun SH; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China.
  • Wang PF; College of Environment, Hohai University, Nanjing 210098, China.
  • Wang C; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China.
  • Wu C; College of Environment, Hohai University, Nanjing 210098, China.
  • Chen J; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China.
Huan Jing Ke Xue ; 44(7): 3864-3871, 2023 Jul 08.
Article em Zh | MEDLINE | ID: mdl-37438285
ABSTRACT
Planktonic microeukaryotes are usually composed of a few abundant species and a large number of rare species, which play an important role in maintaining the health and stability of aquatic ecosystems. At present, little is known about the biogeographical distribution patterns of these two groups of microeukaryotes in large damming rivers. This study analyzed the distribution patterns of abundant and rare planktonic microeukaryotes and the dominant factors affecting their spatial distributions in the Jinsha River, one of the largest rivers in southwestern China that is strongly regulated by cascade dams. The results showed that the alpha diversity of planktonic microeukaryotes in the Jinsha River was higher in the cascade dam reach than that in the upstream natural reach, and the increase in alpha diversity of rare species was larger than that of rich species. There were significant differences in microbial community composition among different river sections, and the relative abundances of the dominant genera such as Vermamoeba shared by them were also significantly different between the two river sections. The results of distance decay analysis revealed that the geographic distribution patterns of rare and abundant taxa were jointly influenced by environmental heterogeneity and dispersal limitation, and the results of variance decomposition analysis and partial Mantel further indicated that dispersal limitation was the dominant ecological process. The results provided data support for the distribution and ecological response of microorganisms in rivers in the areas lacking data in Southwest China.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Rios / Microbiota Idioma: Zh Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Rios / Microbiota Idioma: Zh Ano de publicação: 2023 Tipo de documento: Article