WOW!! Poems show a 65% ⬇️ in ranges of porpoise.
“We used the occurrence sites in poems to map the historical distribution of the Yangtze finless porpoise. The number of grids with occurrences declined from 169 in the Tang Dynasty to just 59 in modern times.."
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Range contraction of the Yangtze finless porpoise inferred from classic Chinese poems
Zhang et al. show how historical documents can provide valuable insights into long-term
changes in species ranges, though the use of such data for freshwater megafauna is
limited.
