Human activity threatens species survival: Study
Human activities such as farming and construction are threatening the survival of scores of wild species by forcing them to travel more to avoid mankind's impact, research show.
According to the United Nations' biodiversity panel, more than three quarters of land and 40 percent of Earth's oceans have already been "severely degraded" by humans.
Its landmark biodiversity assessment in 2019 drew on a large body of research into how human activities are impacting nature.
But there have been relatively few studies looking at specific species and how human influence is changing their behavior.
Researchers in Australia looked at the impact of activities such as roads, tourism, recreation, hunting, shipping and fishing on 167 species, from the 0.05-gram sleepy orange butterfly to the two-tonne Great White shark.
They found that most species had increased the distance they travel due to human influence -- by 70 percent on average.
In a third of species, movement had either increased or decreased by half, according to the study published in the journal Nature Ecology & Evolution.
"This tells us that humans have widespread impacts on animal movement, but in many cases these are going undetected and unaddressed”, lead author Tim Doherty, from the University of Sydney, told AFP.
"In everyday life, we generally only see animals in the wild for short periods and don't get a proper understanding of how they move around and use space.”
'Cascading impacts'
Doherty said that since many species, including most mammals, spend nearly all their energy on hunting for food and finding mates, the additional energy required to relocate away from humans was an unwelcome survival challenge.
"However, animals will often move further in response to disturbance to ensure their survival, for example by seeking shelter, finding food”, he said.
"Some species are able to cope with these changes better than others.”
Of the taxonomic groups studied, birds and insects moved the most on average in order to avoid coming into contact with human activity.
The study warned of "cascading impacts" to natural processes such as pollination if such displacements continued apace.
The authors said they had documented a "global restructuring of animal movement, with potentially profound impacts on populations, species and ecosystem processes."
They called for better preservation of natural habitats through increasing protected areas and managing construction and tourism, as well as seasonal curbs on hunting during species' breeding periods.
(Source: AFP)
Ex-US Army officer and Press TV analyst Scott Bennett dies at 53
OIC condemns Israeli official’s racist remarks on West Bank sovereignty
UN expert slams ‘obscuring’ media coverage of Israeli violence in Amsterdam
Hezbollah rains attack drones down on elite Israeli brigade
Leader: All captains of criminal, Zionist, terrorist gang must be prosecuted
Iran further raises its oil prices for Chinese buyers: Report
Iran to launch major pressure-boosting projects in South Pars
VIDEO | Escalation amid ceasefire talks
EU's Borrell says ICC arrest warrants for Israeli leaders binding
VIDEO | Press TV's News Headlines
VIDEO | Massacre in Pakistan’s Parachinar sparks outrage
PressTV NEWSLETTER
now
This makes it easy to access the Press TV website
