Complex sentence: Established in 1980 at the initiative of the Swiss amateur botanist Petignat Hermann (1923-2000), with an area of 52 hectares, it includes more than 920 plant species, lemurs, radiated tortoises, snakes and chameleons.
Split into simpler sentences: Established in 1980 at the initiative of the Swiss amateur botanist Petignat Hermann (1923-2000). This arboretum covers an area of 52 hectares, with more than 920 plant species, lemurs, radiated tortoises, snakes and chameleons.