Realm: Terrestrial
Climate: Tropical
Biome: Tropical and subtropical dry broadleaf forests
Central latitude: -15.482740
Central longitude: 46.678860
Duration: 7 years, from 2011 to 2017

132 records

9 distinct species

Across the time series Boophis doulioti is the most frequently occurring species

Methods

The Mahamavo watershed lies between the larger Betsiboka and Sofia rivers. Within this large area, Operation Wallacea focused their research around Mariarano village. A spatial sampling framework was established, based around nine forest sample routes, each approximately 4km long, which are stratified with respect to forest condition and configuration. Well defined transect routes were walked and all amphibians within 5m either side were recorded. There are 12 routes in all, three sampled 2010 to 2017, 10 sampled 2011 to 2017 (including the previous three), and two sampled 2014 to 2017. Of these, four are located in the Matsedroy region, six near to Mariarano village, and two in Antafiameva.The coordinates supplied are for the midpoint of each transect. Amphibians were sampled by walking routes on multiple occasions during the day and night. When an amphibian was found, it was identified and recorded. In order to draw valid inferences about trends in relative abundances, all routes were sampled on repeated occasions during a field season. However, the number of samples (times the route was walked) changed each year (for both night and day surveys). In the field, spatially referenced observations are recorded on paper data sheets, which are then entered into a custom database. This permits the field data to be queried in multiple ways and combined with ancillary spatial data for further analysis.

Citation(s)