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The HMAP Data Pages are a research resource comprising of information derived largely from historical records relating to fishing catches and effort in selected spatial and temporal contexts. The History of Marine Animal Populations (HMAP), the historical component of the Census of Marine Life, aimed to improve our understanding of ecosystem dynamics, specifically with regard to long-term changes in stock abundance, the ecological impact of large-scale harvesting by man, and the role of marine resources in the historical development of human society. HMAP data is also accessible through the Ocean Biogeographic Information System (OBIS): http://www.iobis.org/, see also: http://seamap.env.duke.edu/dataset