Supporting data for the article ‘Three-years monitoring of roadkills trends in a road adjacent to a national park in Panama’
Gálvez, Dumas (2021), Supporting data for the article ‘Three-years monitoring of roadkills trends in a road adjacent to a national park in Panama’ , Dryad, Dataset, https://doi.org/10.5061/dryad.n02v6wwxb
Roadkill monitoring can provide important information about spatial and temporal trends, including influential factors on the probability of wildlife – collisions. Such data are important for applying mitigation measures that reduce the mortality of species of conservation concern. Unfortunately, road ecology is not a mainstream discipline in some regions of the world and Central America represents one of those cases. I aimed to monitor roadkills in a road next to a national Park in Panama for three years. I examined whether there was variation in the number of roadkills across taxa (birds, mammals and reptiles), year (2017 – 2020), season (dry vs rainy) and whether monthly average precipitation and temperature influenced the probability of roadkill occurrence. Additionally, I performed a spatial analysis to identify roadkill hotspots. Mammals and reptiles were the most common roadkills. Roadkills tended to decrease with increases in temperature and precipitation. A separate analysis of the two most commons roadkills (iguanas and tamanduas) provided similar trends. The spatial analysis helped to identify a hotspot located in a curved section of the road and surrounded by water. This is the first study to examine for any road in Panama - through statistical modeling – factors that may influence the occurrence of roadkill events. The results suggest that vehicle collisions exert a similar pressure on all taxa and the geometry of the road or distance to the water are also influential.
These data sets include monthly roadkill counts with average monthly precipitation and temperature during the dry and rainy season, over a period of three years (ALL.DATA). Two separate data sets (IGUANAS and TAMANDUAS) contain data as described for the tab ALL.DATA but only with data for green iguanas (Iguana iguana) and Northern Tamandua (Tamandua mexicana), respectively. For the spatial analysis, the data set COORDINATES show the location of each roadkill event, identified by latitude and longitude, date, taxa, IUCN status, scientific name and common name.