文章基本信息

标题：invasive species (Tithonia tubaeformis) relationship in the riparian system of the Arenales River, Salta, Argentina
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作者：Giovanna Larenas Parada ; Marta L De Viana ; Teodoro Chafatinos 等
期刊名称：Ecología Austral
印刷版ISSN：1667-782X
电子版ISSN：1667-7838
出版年度：2004
卷号：14
期号：1
页码：19-29
出版社：Asociacion de Ecologia Argentina
摘要：Biological invasions are an important subject of research closely related to biodiversity loss, causing also important economic problems. Salta City is located in the Lerma Valley, a region invaded by Tithonia tubaeformis, a species from Central America. This study was carried out in the Arias-Arenales riparian system, in the urban area, characterized by numerous and different human alterations. The density of the invader was different in the studied sites and was higher in Tavella and Santa LucÌa. In the later site there were only exotic species. San Javier showed the greatest plant species richness (33), as well as the higher proportion of native species (85%). Topsoil in invaded sites had the highest potassium concentrations. Taking into account the physico-chemical characteristics of the soil and vegetation features, we obtained a grouping of the sites related with invader densities