Geoscience Reference
In-Depth Information
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Mean precipitation (mm)
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Figure 5.3
Relationships between fish trait composition (percentage of trait modality)
and two climatic variables (mean annual temperature and mean precipitation) for 152
European river basins. The line was fitted using a generalized additive model (GAM).
Climate change impacts on the biota of wetlands
Monitoring and assessing the effects of stress on wetlands
Wetlands are not directly included in the Water Framework Directive, but any
logical interpretation of the pristine nature of floodplain rivers must include
them as key components. There is a limited number of more regional assessment
systems, while Europe-wide approaches are less common. Several variables may
reflect the effects of climate change on wetland ecosystems, particularly on pro-
cesses and functioning. Table 5.3 lists suitable indicators for climate change
impacts on wetlands.
Hydrology
Wetland hydrological regimes face impacts from both land use and climate. A rise
in ambient temperature will result in increased water abstraction, and, with more
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