文章基本信息

标题：Studies of the vegetation of a white-sand black-water igapó (Rio Negro, Brazil)
其他标题：Studies of the vegetation of a white-sand black-water igapó (Rio Negro, Brazil)
本地全文：下载
作者：Keel, Shirley H. Kuo ; Prance, Ghillean T. ; Keel, Shirley H. Kuo 等
期刊名称：Acta Amazonica
印刷版ISSN：0044-5967
出版年度：1979
卷号：9
期号：4
页码：645-655
DOI：10.1590/1809-43921979094645
出版社：Instituto Nacional de Pesquisas da Amazônia
摘要：Summary The vegetation analysis of a Central Amazonian igapó, a forest under severe environmental stress — poor soil and seasonal flooding, reveals the existence of the dominant species Myrciaria dubia with a M.I.V. 75. The Shannon diversity index of this forest is 4.358 bits per individual, of which 75.73% is attributable to the evenness value. Species distributions change along the moisture gradient. Though many species exhibit the tendency of zonal distribution, the boundaries of zones are not abrupt. The authors suggest that species distribution is the result of physiological difference to flood tolerance. Further research should be directed to the comparison of flood tolerance of the plants which occur in the following three areas: permanent water-logged area, beach area with open canopy and upper area with closed canopy. The various adaptive strategies to seasonal inundation and drought, and the reproductive potential of the forest also merit further studies.
其他摘要：Summary The vegetation analysis of a Central Amazonian igapó, a forest under severe environmental stress — poor soil and seasonal flooding, reveals the existence of the dominant species Myrciaria dubia with a M.I.V. 75. The Shannon diversity index of this forest is 4.358 bits per individual, of which 75.73% is attributable to the evenness value. Species distributions change along the moisture gradient. Though many species exhibit the tendency of zonal distribution, the boundaries of zones are not abrupt. The authors suggest that species distribution is the result of physiological difference to flood tolerance. Further research should be directed to the comparison of flood tolerance of the plants which occur in the following three areas: permanent water-logged area, beach area with open canopy and upper area with closed canopy. The various adaptive strategies to seasonal inundation and drought, and the reproductive potential of the forest also merit further studies.