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A study published on April 15 in the journal Frontiers in Forests and Global Change presents evidence that only about three percent of Earth’s land ecosystems remain untouched by human activity. The analysis focuses on large swaths of land, about 3,860 square miles each, to account for the amount of habitat required by wide-ranging species. The study takes into account three measures of ecological integrity: habitat intactness, which is how human activity has affected the land; faunal intactness, which looks at species loss; and functional intactness, which focuses on species loss among animals that contribute to the health of an ecosystem. ....
marth/Alamy Most of Earth’s terrestrial habitats have lost their ecological integrity, including areas previously categorised as being intact. Ecological integrity encompasses three measures of intactness. Habitat intactness is a measure of the extent to which people have made changes to the land, faunal intactness is a measure of the number of animal species lost from a habitat, and functional intactness measures the degree of functional densities of fauna, that is whether there are enough animals of individual species to effectively play their part in a functioning ecosystem. Advertisement “We only find about two to three per cent of the Earth[’s land] is where you could be considered as having the same fauna and flora that you had 500 ago, in preindustrial times, before major human impacts had occurred,” says Andrew Plumptre, who is head of the Key Biodiversity Areas Secretariat, and an employee of BirdLife International in the UK. ....
Just 3 Per Cent Of Earth's Land Surface Is Still Ecologically Intact forbes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from forbes.com Daily Mail and Mail on Sunday newspapers.
In Japan, scientists look to the past to save the future of grasslands by Marlowe Starling on 8 March 2021 Ecologists in Japan recorded several rare and endangered plant species in old grasslands that are not present in younger ones, mirroring findings from other continents that highlight the rich biodiversity of these landscapes. Grasslands face growing threats from humans on a global scale, especially land use change like agriculture and urban growth. But some human interventions have had a beneficial effect on biodiversity conservation in Japan, such as the maintenance of ski runs, which provide a safe haven for many of the plant species and pollinators that keep grassland ecosystems healthy. ....