Query by Location - Results

Habitat: Acid grassland

Grid Reference: SH649483

Grid Easting: 262500 to the 5km mid point (metres)

Grid Northing: 347500 to the 5km mid point (metres)

Grid Easting: 264500 to the 1km mid point (metres)

Grid Easting: 348500 to the 1km mid point (metres)

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Pollutant: Ammonia

Critical Level: 1.0 - 3 µg m-3

Concentration: 0.47 µg m-3

Data Year: 2013 - 2015

Exceedance: [1.0] to [-2.53] µg m-3

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Pollutant: N Deposition

Critical Load Range:
Non-mediterranean dry acid and neutral closed grassland: 10 - 15 Kg N/ha/year
Moist and wet oligotrophic grasslands: Molinia caerulea meadows: 15 - 25 Kg N/ha/year
Moist and wet oligotrophic grasslands: Heath (Juncus) meadows and humid (Nardus stricta) swards: 10 - 20 Kg N/ha/year
Alpine and subalpine grasslands: 5 - 10 Kg N/ha/year
Non-mediterranean dry acid and neutral closed grassland: 10 - 15 Kg N/ha/year
Moist and wet oligotrophic grasslands: Molinia caerulea meadows: 15 - 25 Kg N/ha/year
Moist and wet oligotrophic grasslands: Heath (Juncus) meadows and humid (Nardus stricta) swards: 10 - 20 Kg N/ha/year
Alpine and subalpine grasslands: 5 - 10 Kg N/ha/year

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

Deposition: 12.04 Kg N/ha/year (Find out about method changes to CBED model 2013)

Data Year: 2013 - 2015

Exceedance Ranges:
Non-mediterranean dry acid and neutral closed grassland [2.04] to [-2.96] Kg N/ha/year
Moist and wet oligotrophic grasslands: Molinia caerulea meadows [-2.96] to [-12.96] Kg N/ha/year
Moist and wet oligotrophic grasslands: Heath (Juncus) meadows and humid (Nardus stricta) swards [2.04] to [-7.96] Kg N/ha/year
Alpine and subalpine grasslands [7.04] to [2.04] Kg N/ha/year
Non-mediterranean dry acid and neutral closed grassland [2.04] to [-2.96] Kg N/ha/year
Moist and wet oligotrophic grasslands: Molinia caerulea meadows [-2.96] to [-12.96] Kg N/ha/year
Moist and wet oligotrophic grasslands: Heath (Juncus) meadows and humid (Nardus stricta) swards [2.04] to [-7.96] Kg N/ha/year
Alpine and subalpine grasslands [7.04] to [2.04] Kg N/ha/year

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Pollutant: Nitrogen Oxides

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

Concentration: 4.34 µg NOx (as NO2) m-3

Data Year: 2013 - 2015

Exceedance: -25.66 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: 1089.68 ppb hours

Data Year: 2007 - 2012

Exceedance: -3910.32 ppb hours

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Pollutant: Sulphur Dioxide

Critical Level: 20 µg m-3

Concentration: 0.23 µg m-3

Data Year: 2013 - 2015

Exceedance: -19.77 µg m-3

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Pollutant: Acid Deposition

Critical Load Class & Values:
Class: Acid grassland
CLmaxS: 0.49 CLminN: 0.366 CLmaxN: 0.856 (keq/ha/yr)

Deposition: 1.08 (N: 0.86 | S: 0.27) (keq/ha/yr) (Find out about method changes to CBED model 2013)

Data Year: 2013 - 2015

Exceedance: