Abstract
Brazilian Amazon is facing ongoing threat due to deforestation. Eastern Amazon (EA), however, is an old colonization front, where rural landscape is dominated by secondary vegetation (capoeira) and cattle ranching. The effects of land-use land-cover (LULC) at catchment, riparian and local scales upon stream insect assemblages (SIA) were analyzed from 17 catchments. Agriculture development, daily variation in temperature, dissolved oxygen and sodium concentrations explained variations of 33.7% in taxa composition and 58.5% in functional feeding groups. Partial Least Squares Regression revealed complex effects on SIA, pointing to interactions of LULC at all scales, but stronger at the riparian. Capoeira placed varied effects upon SIA, positive and negative and weaker than agriculture or forest cover. In order to warrant optimal conditions to the stream biota, indicating a sustained flow of ecosystem services, both forest fragments and capoeira patches should be adequately managed, especially along and closer to the aquatic habitat network.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
