What is the Wildlife Picture Index?
The Wildlife Picture Index (WPI) was developed jointly by the Wildlife Conservation Society and the Zoological Society of London as an indicator derived from primary camera trap data (O'Brien et al 2010). The WPI was designed to meet the requirements of biodiversity monitoring indexes as described by Buckland et al. (2005), and it monitors ground-dwelling tropical medium and large mammals and birds, species that are important economically, aesthetically and ecologically.
Why does the TEAM Network use the WPI?
The TEAM network, which implements the largest global camera trap network in tropical forests (16 sites, 14 countries and approximately 1000 camera traps deployed over 2000km2 that are monitored annually), adopted this indicator as a way to synthesize and understand the effects of climate change and land use change on tropical terrestrial mammal and bird diversity.
The WPI can be aggregated at the level of a site (e.g., a TEAM Site), sites within a region, sites within a region or globally. At all these levels data can be disaggregated for particular taxonomic and functional groups of species, species with different conservation status or facing particular threats. TEAM will report the WPI at the following levels: local (site), regional (continental) and global. At each of these levels TEAM will report WPIs for species with different conservation status (Endangered, Critically Endangered, etc), CITES levels of threat and functional groups. See the Technical Approach for details on how the WPI is created using TEAM Network data.
How to select the Year Range for WPI?
You can select the year range from the Year Range Selection Slider control. Choosing a year range results in an update of the corresponding chart for the years selected. The minimum number of contiguous years required for the computations is 2 and hence you will only be able to choose year range with that restriction. When a year range is selected the chart for WPI updates appropriately to reflect the data for selected years.
How to select Sites and Species for WPI?
The site items are listed as checkbox in the Site Selection accordion control. They are grouped as All sites, Site List of individual sites, Countries and Regions. Selecting each item in the groups plots the WPI line for the item in WPI Chart .You can undertake a comparision analysis of WPI Trends for the items. For easy analysis, it is suggested to limit you site selection to reasonable number of WPI lines.If you have selected a country or continent or all sites , then you can drill down to individual sites in the group by clicking on the WPI line for those groups. On Clicking on individual site WPI, it drills down to the Species occupancy chart for the selected site. You can use the WPI Chart navigation breadcrumb to move up or down the drilldown.The species items are listed as checkbox in the Species Selection accordion control. They are grouped as Functional list, Taxonomic List, Red list. Selecting each item in the Species group plots the WPI line for selected Year Range and sites in the WPI Chart.