Short term fluctuations and succession trends in tropical floodplain vegetation measured by correspondence analysis

Brazilian Archives of Biology and Technology

Anderson Medeiros Dos Santos¹  Sidinei Magela Thomaz¹ 

[1] ,Universidade Estadual de MaringáMaringá PR ,Brasil

关键词: Aquatic macrophytes;    Correspondence Analysis;    Paraná River;    succession;    tropical floodplain;   

DOI  :  10.1590/S1516-89132008000400016

来源: SciELO

【 摘 要 】

The aim of this work was to study the aquatic macrophytes community development to distinguish the fluctuations from succession trends at different temporal and spatial scales in the Upper Paraná River floodplain. The samples were collected quarterly from May 2000 to March 2002 in seven lakes with different degrees of connectivity from the main river channel and analyzed by between-class correspondence analysis. It was difficult to establish any pattern of community development at local scale but at a higher level of organization, disconnected lakes were characterized by fluctuation of the floristic composition. Connected lakes showed a straight trajectory, indicating that succession was occurring at these sites. Probably the income of propagules and diaspores from the river into connected lakes was the driving force of the observed change in community composition.

【 授权许可】

CC BY-NC   
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