| Summary: | The Mollusca Collection of the National Museum of Natural Sciences (MNCN, CSIC, Madrid) contains some specimens from the Arctic Circle, exactly 38 lots including historical collections, which may provide insights to climate change research. Some of these collections refer to those of the Head of the ScientificCommission of the Pacific, the mariner and naturalist Patricio Paz y Membiela (accessioned in 1873), and the malacologists Joaquín González Hidalgo and Florentino Azpeitia (accessioned in 1913 and 1934 respectively). Recently there has been a donation from the collector and diplomat Javier Conde de Saro which was accessioned in theMNCN in 2011 and a collection of thecurator of the Mollusca Collection, Rafael Araujo, of 2010. These specimens belong to 26 species (15 marine and three freshwater gastropods; six marine and one freshwater bivalves; and one polyplacophoran) from places such as Kola Peninsula, Greenland and Novaya Zembla; and Russian Arctic waters. All of these specimens have been databased and are an important contribution to global research as mollusc are heavily affected by temperature changes and ocean acidification.
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