Survey done by The Data Distribution Centre The data observes climate change impacts
In the database, responses in physical systems include shrinking glaciers in every continent, melting permafrost, shifts in spring peak river discharge associated with earlier snowmelt, lake and river warming (with effects on thermal stratification, chemistry, and freshwater organisms), and increases in coastal erosion. For terrestrial biological systems, changes documented in the database include shifts in spring events (e.g., earlier leaf unfolding, blooming date, migration, and timing of reproduction), species distributions, and community structure. Database observations also demonstrate changes in marine-ecosystem functioning and productivity, including shifts from cold-adapted to warm-adapted communities, phenological changes and alterations in species interactions. In each category, many of the data series are over 35 years in length.
Questions regarding this database should be addressed to Cynthia Rosenzweig. Part of the European data was contributed by Annette Menzel. Users should contact her regarding these data. Their contact emails are included in the data description of the database.