Environmental integrity as a modeler of the composition of the Odonata community

摘要: Human actions often alter natural environments, causing homogenization of micro-habitats and, consequently, the loss or replacement species. Our research evaluates how effects environmental integrity and physical chemical characteristics streams influence adult Odonata community in a region Amazon, western Para. The data were obtained 15 first second order municipality Santarem, Para, between October December 2014 (dry season) March May 2015 (rainy season). A total 544 specimens collected, distributed 23 genera, 35 Significant differences observed composition based on streams, species are replaced as habitat gradient is reduced, with that need more preserved conditions extinct locally, making room for generalist However, only Psaironeura tenuissima was an indicator sites, while Argia sp.1 Mnesarete smaragdina indicative altered sites. None variables had any richness abundance Odonata.