At each site we collect information on the type and number of sediment-dwelling animals present. Our monitoring results from 2001 to 2011 have been reported on in a previous indicator, and further detail can be found on the REMP website, and in technical publications.
In this indicator we report on monitoring results from 2012 onwards using an estuarine health index called the Traits Based Index (TBI). The TBI summarises animal community characteristics based on the animals’ biological traits. Biological traits are the physical and behavioural characteristics that define a particular species (e.g. body size, mobility, feeding behaviour). The TBI tells us about the health of our estuaries. It ranges between zero and one, with one being most healthy and zero being least healthy. We can use the TBI to track the health of our estuary sites over time, and to compare the health of different estuaries.
The graphs below show the TBI score for each monitoring site in the three currently monitored estuaries for 2012 and 2017.
Comparison of the three estuaries shows:
The Excel spreadsheet below contains the source data to this indicator's graph and any additional data.