Query by Location - Results

Habitat: Dwarf Shrub Heath

Grid Reference: NH881045

Grid Easting: 287500 to the 5km mid point (metres)

Grid Northing: 802500 to the 5km mid point (metres)

Grid Easting: 288500 to the 1km mid point (metres)

Grid Easting: 804500 to the 1km mid point (metres)

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Pollutant: Ammonia

Critical Level: 1.0 - 3 µg m-3

Concentration: 0.14 µg m-3

Data Year: 2013 - 2015

Exceedance: [1.0] to [-2.86] 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: 5.04 Kg N/ha/year (Find out about method changes to CBED model 2013)

Data Year: 2013 - 2015

Exceedance Ranges:
Dry heaths [-4.96] to [-14.96] Kg N/ha/year
Northern wet heath: Calluna-dominated wet heath (upland moorland) [-4.96] to [-14.96] Kg N/ha/year
Northern wet heath: Erica tetralix dominated wet heath [-4.96] to [-14.96] Kg N/ha/year

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Pollutant: Nitrogen Oxides

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

Concentration: 2.36 µg NOx (as NO2) m-3

Data Year: 2013 - 2015

Exceedance: -27.64 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: 709.99 ppb hours

Data Year: 2007 - 2012

Exceedance: -4290.01 ppb hours

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Pollutant: Sulphur Dioxide

Critical Level: 20 µg m-3

Concentration: 0.12 µg m-3

Data Year: 2013 - 2015

Exceedance: -19.88 µg m-3

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Pollutant: Acid Deposition

Critical Load Class & Values:
Class: Dwarf shrub heath
CLmaxS: 0.4 CLminN: 1.035 CLmaxN: 1.435 (keq/ha/yr)

Deposition: 0.4 (N: 0.36 | S: 0.11) (keq/ha/yr) (Find out about method changes to CBED model 2013)

Data Year: 2013 - 2015

Exceedance: