Bird surveys in grasslands: do different count methods present distinct results?

• DOI: 10.1007/bf03544422
• Publication Date: 2020-02-05T08:02:56Z
• Authors: Carla Suertegaray...; Eduardo Chiarani; Luciana da Silva ...; Christian Borges ...; Gerhard Ernst Ove...
• Keywords: Belt transect

We compared two methods routinely used to conduct bird community surveys: point counts and transects. Our aim was look for differences between these regarding detection of richness abundances. Additionally, we analyzed if one the provided higher correlation data with vegetation structure as an important habitat descriptor. From September 2014 January 2015, surveyed birds in 264 258 transects spread across southern Brazilian grasslands. conducted method direct sequence other, same place observers at weather conditions. standardized eliminate effort bias caused by area covered time employed each method. Total abundance recorded did not differ (point 4753 4436, P = 0.31), but found a significant difference species 187 173, 0.01). Abundance sampled transect showed slightly height (r2 0.07; 0.004) than 0.03; 0.05). While results from both were similar, more effective counts, indicating that this might be useful it currently is. discuss potential factors may influence effectiveness suggest issues should addressed further research order develop sampling communities.