Query by Location - Results

Habitat: Acid grassland

Grid Reference: NY184044

Grid Easting: 317500 to the 5km mid point (metres)

Grid Northing: 502500 to the 5km mid point (metres)

Grid Easting: 318500 to the 1km mid point (metres)

Grid Easting: 504500 to the 1km mid point (metres)

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Pollutant: Ammonia

Critical Level: 1.0 - 3 µg m-3

Concentration: 0.58 µg m-3

Data Year: 2013 - 2015

Exceedance: [1.0] to [-2.42] 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: 15.26 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 [5.26] to [0.26] Kg N/ha/year
Moist and wet oligotrophic grasslands: Molinia caerulea meadows [0.26] to [-9.74] Kg N/ha/year
Moist and wet oligotrophic grasslands: Heath (Juncus) meadows and humid (Nardus stricta) swards [5.26] to [-4.74] Kg N/ha/year
Alpine and subalpine grasslands [10.26] to [5.26] Kg N/ha/year
Non-mediterranean dry acid and neutral closed grassland [5.26] to [0.26] Kg N/ha/year
Moist and wet oligotrophic grasslands: Molinia caerulea meadows [0.26] to [-9.74] Kg N/ha/year
Moist and wet oligotrophic grasslands: Heath (Juncus) meadows and humid (Nardus stricta) swards [5.26] to [-4.74] Kg N/ha/year
Alpine and subalpine grasslands [10.26] to [5.26] Kg N/ha/year

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Pollutant: Nitrogen Oxides

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

Concentration: 4.76 µg NOx (as NO2) m-3

Data Year: 2013 - 2015

Exceedance: -25.24 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: 395.69 ppb hours

Data Year: 2007 - 2012

Exceedance: -4604.31 ppb hours

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Pollutant: Sulphur Dioxide

Critical Level: 20 µg m-3

Concentration: 0.21 µg m-3

Data Year: 2013 - 2015

Exceedance: -19.79 µg m-3

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Pollutant: Acid Deposition

Critical Load Class & Values:
Class: Acid grassland
CLmaxS: 0.44 CLminN: 0.366 CLmaxN: 0.806 (keq/ha/yr)

Deposition: 1.29 (N: 1.09 | S: 0.29) (keq/ha/yr) (Find out about method changes to CBED model 2013)

Data Year: 2013 - 2015

Exceedance: