Name: Worst BQR BEAT+

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This map brings together the BEAT+ aggregations to provide an overall synthesis of the Biological Quality Ratios (BQR) values. The map shows which are the worst (lowest) BQR values in each assessment grid cell. The ‘worst’ value is used here to identify the biological group most at risk, rather than averaging over all groups to avoid over-­emphasis on groups with more intensive monitoring. There are biodiversity components Bad or Poor state along the Bay of Biscay coast and in the in the Southern North Sea. This is primarily due to specific indicators of fish (Biscay) and phytoplankton or benthic data (Southern North Sea). The Celtic Seas, Norwegian Sea Northern North Sea and northern Baltic all have a worst case of Medium, although it should be emphasised that the thresholds for use in offshore waters in these regions are still under development. The Western Mediterranean, southern Ionian Sea and Central Adriatic are also showing Poor BQRs (mainly from commercial fish status measures). Other areas generally have indicators which show good or high BQR values, notably parts of the Celtic Seas, the Bay of Biscay and Iberian Coast plus areas in the Eastern Mediterranean. The Black Sea data is showing a Medium response though the assessment area is limited to Bulgarian coast. There are not sufficient indicators to assess the worst case across open waters Macaronesia sub-‐regions, most of the Eastern Mediterranean or the Black Sea.</SPAN></P><P><SPAN /></P><P><SPAN>The BEAT+ tool integrates data from normalised indicators to identify worst case status measures for different biodiversity components. The results are then linked to a standard gridE based Spatial Assessment Unit (SAU) which is used both for biodiversity and for pressures assessments (Andersen et al., 2014).</SPAN></P><P><SPAN /></P><P><SPAN>These grid-­based SAUs not only allow alignment of indicators for biodiversity and for pressures but provide a means for combining large assessment areas (e.g. for wide‐ranging species) with point data collected from biological surveys e.g. WFD monitoring. BEAT+ tool works by calculating a Biological Quality Ratio (BQR) which is an aggregated score of indicator outcomes within a grid square. To allow objective comparison, the indicator outcomes are normalised to a scale of 0 to 1, with five status classes at equal intervals on that scale (from Bad starting at 0, Poor at 0.2, Medium at 0.4, Good at 0.6 and High at 0.8). By this means, indicators based on different biological criteria can be aggregated in a consistent way.</SPAN></P><P><SPAN /></P><P><SPAN>Report reference: https://www.eionet.europa.eu/etcs/etc-icm/products/biodiversity-in-europes-seas</SPAN></P></DIV></DIV></DIV>

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