NERC Open Research Archive

Sep 2, 2026

This document presents a comprehensive analysis of nitrogen (N) deposition across the UK, visualized through maps and a related chart. The left map of the UK displays N deposition (N dep) in kg N/ha/yr, with a color gradient indicating values from 0-5 (yellow) to >35 (dark red). High deposition rates are observed in various regions, particularly in England and Scotland. The right map illustrates the difference in N deposition, with green hues suggesting a decrease and brown hues an increase. A central area in England shows a significant decrease in N deposition. The chart depicts a conceptual model of species richness as a function of N deposition, illustrating an inverse relationship where higher deposition leads to lower species richness. It also shows how increased or decreased funding could potentially alter N deposition levels, impacting species richness. The document also includes a table detailing the Habitat Area (ha) for four habitat types: Heathland, Acid grassland, Dunes, and Bogs, across England, Wales, Scotland, and Northern Ireland, along with their respective Welfare-to-Payment (£/ha) values. The total UK area for these habitats is also provided.logos of NERC Open Research Archive and Centre for Ecology & Hydrology are visible.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages23

Reading Time58 min

AccessFree to download

Nitrogen Deposition Analysis

Map 1: N Deposition (kg N/ha/yr)

Map 2: Difference in N Deposition

Chart: Species Richness vs. N Deposition

Table: Habitat Area and Welfare-to-Payment (£/ha)

FAQs

What does the left map of the UK show?

The left map displays the nitrogen deposition (N dep) in kg N/ha/yr across the UK, using a color scale to represent different deposition levels from low to high.

What does the right map indicate?

The right map shows the difference in N deposition, with green areas signifying a decrease and brown areas an increase in nitrogen deposition levels.

How does nitrogen deposition relate to species richness according to the chart?

The chart illustrates an inverse relationship where higher levels of nitrogen deposition generally lead to a decrease in species richness for the habitats studied.

Sep 2, 2026

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