Variação espacial e temporal nos registros de pequenos mamíferos não-voadores na Amazônia

Abstract

Small non-flying mammals are animals weighing less than 1.5 kg, thus comprising some rodents of the order Rodentia and all marsupials of the order Didelphimorphia. The knowledge that we still have about diversity in the Amazon is very scarce, part of this lack of knowledge is due to gaps in diversity data, which, when identified, help to better understand the distribution pattern of these species. the spatial distribution of knowledge of small mammal biodiversity and its gaps in areas that need more attention. To carry out this work, database sites such as Gbif, Portal de Biodiversidade and Sibbr were used. Shapefiles of two conservation areas were also downloaded, to later be used in our analyzes through qGis to determine the spatial and temporal distribution. The distribution of groups was very heterogeneous by biome, with a predominant distribution of the Cricetidae family. Most records were carried out between the years 1951 to 1984 and were more concentrated outside conservation areas in easily accessible areas. Such areas are also linked to environmental degradation and changes in land use. Seeking more information about these groups, especially in areas with little or no records, is important to better understand the diversity of these groups and create preservation measures.