Relación funcional asociada al transporte de polen por sírfidos en tres coberturas vegetales de Bogotá D.C.

Abstract

Sirfid flies are insects indispensable in various anthropogenic ecosystems due to their participation in different processes such as the organic matter cycle, biological control and pollination. Our objective was to evaluate the diversity of sirfid communities and their diet in function on three different land cover with urban influence. The syphilid communities based on coverage were evaluated using Hill diversity indices and Principal Component Analysis, while their diet was evaluated with bipartite network analysis. First, according to the ecological indexes, an association was found between the Discontinuous Urban Fabric with low diversity and high richness of sirfids in contrast to the Riparian Forest and the High Secondary Vegetation; secondly, according to the diet of these flies, two functional groups of insects were identified in which the large ones and a diverse diet of trees stand out, and on the other hand those of small size with a low diversity diet associated with pollen from herbaceous and shrubby plants. It was found that the sirfids had patterns in their diversity, abundance, wealth and diet similar to other non-tropical ecosystems, where the presence of open spaces and a developed forest associated with pollen sources are determinants for their abundance and diversity respectively.