Kaarlo Pentti Linkola (7 December 1932 – 5 April 2020) was a prominent Finnish deep ecologist, ornithologist, polemicist, naturalist, writer, and fisherman. He wrote widely about his ideas and in Finland was a prominent thinker.: 271 Linkola was a year-round fisherman from 1959 to 1995. He fished on Keitele, Päijänne and Gulf of Finland, and since 1978 he fished on Vanajavesi.Linkola blamed humans for the continuous degradation of the environment. He promoted rapid population decline to combat the problems commonly attributed to overpopulation.: 271
