The map shows stations with a statistically significant decrease (green), increase (red) or no trend (yellow) in winter oxidised nitrogen concentrations within the period 1985-2010. Selected stations must have at least data in the period from 2007 to present and at least 5 years data in all.
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Home gardens can add immensely to the biodiversity of cities and towns.
They provide cover, feeding and commuting routes for wildlife including hedgehogs, badgers, birds and butterflies. If you have a garden, increase its value by planting berry-bearing trees and flowering plants. Rowan, bird cherry and dandelion, among others, can serve as food and shelter to a wide range of invertebrates.
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