The Impact of Atmospheric Nitrogen Deposition on Grasslands
Species Composition and Biogeochemistry
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Atmospheric nitrogen deposition has the potential to alter species composition and species richness in grasslands, but until recently the effects of nitrogen deposition had not been demonstrated at a large scale. Using sixty-eight grasslands along the gradient of ambient atmospheric nitrogen deposition in the UK, this book investigates damage caused by acidification and eutrophication. The results show a clear loss of species richness along this nitrogen deposition gradient. Forbs account for the majority of this decline, showing reductions in both cover and abundance along the nitrogen deposi...
Atmospheric nitrogen deposition has the potential to
alter species composition and species richness in
grasslands, but until recently the effects of
nitrogen deposition had not been demonstrated at a
large scale. Using sixty-eight grasslands along the
gradient of ambient atmospheric nitrogen deposition
in the UK, this book investigates damage caused by
acidification and eutrophication. The results show
a clear loss of species richness along this nitrogen
deposition gradient. Forbs account for the majority
of this decline, showing reductions in both cover
and abundance along the nitrogen deposition
gradient. Using canonical correspondence analysis,
several individual species are identified as being
positively and negatively associated with nitrogen
deposition. Changes in soil and plant tissue
chemistry are also reported including declines in
soil pH, mobilisation of aluminium, arsenic and lead
in the soil, and increased soil ammonia
concentration along the nitrogen deposition
gradient. This analysis should help shed some light
on the actual impact of nitrogen deposition to semi-
natural grasslands in the UK.
alter species composition and species richness in
grasslands, but until recently the effects of
nitrogen deposition had not been demonstrated at a
large scale. Using sixty-eight grasslands along the
gradient of ambient atmospheric nitrogen deposition
in the UK, this book investigates damage caused by
acidification and eutrophication. The results show
a clear loss of species richness along this nitrogen
deposition gradient. Forbs account for the majority
of this decline, showing reductions in both cover
and abundance along the nitrogen deposition
gradient. Using canonical correspondence analysis,
several individual species are identified as being
positively and negatively associated with nitrogen
deposition. Changes in soil and plant tissue
chemistry are also reported including declines in
soil pH, mobilisation of aluminium, arsenic and lead
in the soil, and increased soil ammonia
concentration along the nitrogen deposition
gradient. This analysis should help shed some light
on the actual impact of nitrogen deposition to semi-
natural grasslands in the UK.
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