Negatives and positives of climate change.

Basic Idea:
                   Climate change is having a detectable effect on bird populations at a European scale, including both negative and positive effects.
                The number of bird species whose populations are observed to be negatively impacted by climatic change is three times larger than those observed to be positively affected by climate warming in this set of widespread European land birds.
           The Climatic Impact Indicator, which illustrates the impact of climate change on bird populations, has increased strongly in the past twenty years, coinciding with a period of rapid climatic warming in Europe. Potential links between changes in bird populations and ecosystem functioning and resilience are not well understood...

What are the negative (and positive) impacts of climate change on biodiversity?

1- Climate change impact indicator for birds:

The indicator demonstrates the impact of climate change on widespread bird populations has increased strongly in the past twenty years. The Climatic Impact Indicator measures the divergence between the population trends of bird species projected to expand their range and those predicted to shrink their range due to climate change.

2- Weighted population trend of species predicted to lose range in response to climatic change (90 Species):

The weighted population index of species expected to lose in range due to climatic change has decreased by 20% since 1989.

3- Weighted population index of species predicted to gain range in response to climatic change (30 species):

The weighted population index of species expected to gain in range due to climatic change has increased by over 30 % since 1989.