This Targeting Revisits Map shows the 1km squares from which one or more Soldierfly species (family Stratiomyidae) have been recorded through the Soldierfly and Allies Recording Scheme.
What do you think of this tool? Is it useful and does it inspire you to record? Please give us your feedback.
Please note the map may take a while to load or update
The colour of each square shows the status of each 1km square based on exisiting and new records (records made or submitted in 2021):
- Bright pink squares are ‘Targets for revisits’: They have records from only one year in the past – if these sites are revisited then they can be included in our trend analysis.
- Pale pink squares are 'New this year': They, for the first time, have records this year. Next year these will become targets for revisits.
- Dark green squares are ‘Well recorded’: They already have records from multiple years – these sites are already included in our trend analysis, but records from these sites continue to be valuable.
- Pale green squares are ‘Successful revisits’: They used to only have records from a single year, but since this year have visits from multiple years and will now be included in our trend analysis.
- Blank squares are 'Unrecorded': So far, we don’t have any records of Soldierflies in our database.
Clicking on a square shows a pop-up containing summary statistics for the 1km square: the number of years with data, the number of Soldierfly species recorded, the number of visits and the first/last years with data.
Why are revisits useful?
The Targeting Revisits Map highlights 1km grid squares that currently only have records from a single year in the past (bright pink on the map). Researchers at the
Biological Records Centre
use data from 'well recorded' squares (dark green on the map: with visits in multiple years) to estimate species trends. Therefore you can increase the amount of data for analysis by revisiting squares that have records from only one year in the past – and so to turn the bright pink 'targets for revisit' to dark green, 'well recorded' squares.
Shiny App developed by UKCEH through the TDSA project
The TSDA (Terrestrial Surveillance Development and Analysis) project is a partnership of JNCC, UKCEH and BTO.