Query by Location - Results

Habitat: Dwarf Shrub Heath

Grid Reference: IJ304245

Grid Easting: 142500 to the 5km mid point (metres)

Grid Northing: 482500 to the 5km mid point (metres)

Grid Easting: 140500 to the 1km mid point (metres)

Grid Easting: 481500 to the 1km mid point (metres)

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Pollutant: Ammonia

Critical Level: 1.0 - 3 µg m-3

Concentration: 1.21 µg m-3

Data Year: 2015 - 2017

Exceedance: [1.0] to [-1.79] µg m-3

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Pollutant: N Deposition

Critical Load Range:
Dry heaths: 10 - 20 Kg N/ha/year
Northern wet heath: Calluna-dominated wet heath (upland moorland): 10 - 20 Kg N/ha/year
Northern wet heath: Erica tetralix dominated wet heath: 10 - 20 Kg N/ha/year

For applying the best indicative critical load values for use in impact assessments please visit the following page.

Deposition: 22.4 Kg N/ha/year

Data Year: 2015 - 2017

Exceedance Ranges:
Dry heaths [12.4] to [2.4] Kg N/ha/year
Northern wet heath: Calluna-dominated wet heath (upland moorland) [12.4] to [2.4] Kg N/ha/year
Northern wet heath: Erica tetralix dominated wet heath [12.4] to [2.4] Kg N/ha/year

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Pollutant: Nitrogen Oxides

Critical Level: 30 µg NOx (as NO2) m-3

Concentration: 4.28 µg NOx (as NO2) m-3

Data Year: 2015 - 2017

Exceedance: -25.72 µg NOx (as NO2) m-3

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Pollutant: Ozone

Critical Level: 5000 ppb hours (based on(Semi-)natural vegetation communities dominated by perennials, 6 month growing season mid April- mid October)

Exposure: 629.77 ppb hours

Data Year: 2007 - 2012

Exceedance: -4370.23 ppb hours

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Pollutant: Sulphur Dioxide

Critical Level: 20 µg m-3

Concentration: 0.53 µg m-3

Data Year: 2015 - 2017

Exceedance: -19.47 µg m-3

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Pollutant: Acid Deposition

Critical Load Class & Values:
Class: Dwarf shrub heath
CLmaxS: 0.5 CLminN: 0.643 CLmaxN: 1.143 (keq/ha/yr)

Deposition: 1.95 (N: 1.6 | S: 0.45) (keq/ha/yr)

Data Year: 2015 - 2017

Exceedance: