Human activities have an impact on wildlife, Even in protected regions:

According to recent studies, tropical mammals living even in protected zones are not immune to the effects of human activity taking place elsewhere. The ten-year study found that 159 mammals were affected by anthropogenic stressors, including habitat fragmentation, human population density, and others, across 16 protected areas in various biogeographic regions of the world.

Researchers from Rice University, Wageningen University & Research, and the Norwegian University of Life Sciences conducted the study, which was then published on June 26, 2023, in the journal Nature Ecology and Evolution.

Udzungwa Mountains National Park in Tanzania, Pasoh Forest Reserve in South East Asia, Bwindi Impenetrable National Park in Uganda, Yasuni National Park in South America, Caxiuana National Forest in Brazil, Cocha Cashu-Manu National Park in Peru, and Korup National Park in Cameroon were just a few of the protected areas that were investigated.

The researchers used photos taken over a decade at more than 1,000 locations using trap cameras. Despite living in extensive forest reserves, they discovered that creatures including 'Jaguars', 'Mountain Gorillas', and 'Sunda pangolins' were nevertheless harmed by human activity.

A prime example is the Jaguar, which is severely threatened "due to retaliatory hunting and the depletion of its main prey in areas accessible to humans," the study claimed. Deforestation severely impacted certain animals and caused habitat fragmentation,

The study came up with three major conclusions. The first discovery was that the availability of forest area in protected areas and habitat fragmentation both inside and outside the protected areas affected the likelihood of a site being occupied by a specialist species, which only occupy specified environments.

The researchers also discovered that generalist species, which can adapt to a wider range of environments, have a higher chance of surviving close to the edge of protected areas with small-scale landscapes and low human population densities. Thirdly, because of varying anthropogenic pressures, the habitat specialists were extremely susceptible to habitat loss.

The study also found that the survival and lives of the protected species were threatened by significant human activity and population density outside of the protected regions.

The researchers hypothesis that generalist species had a better chance of surviving near protected regions with lower human population. For instance, croplands that provide access to food resources are advantageous to wild boars.

Although generalists had greater chances of survival inside the center of protected areas than at their margins in places with high human population density, the influence of distance to the edge of protected areas on survival features varied. The situation was observed for heavily hunted species as the Central American agouti or the Abbott's duiker (Cephalophus spadix).

Strong variety was also seen in the generalist species. For instance, the northern tamandua (Tamandua mexicana) responded favourable to habitat fragmentation because it made it simpler for it to acquire food sources like termites or ants.

The study highlighted the close ties between sociocultural practices and beliefs of the local population and protected places.

The ocelot, a medium-sized wildcat found in central and south America, has been observed to suffer from human population density. The animal is attacked because of disputes between humans and predators and because of its orange-yellow fur coat with black stripes.

Additionally, they discovered that Borneo's sun bear species flourished in forests that had been altered by people and had less hunting pressure.

Additionally, generalists were found to function better in a variety of habitats that provide a larger variety of food and shelter, which are typically found on the edge of protected areas.

Despite the fact that species may thrive in a variety of environments, from deep tropical forests to wide agricultural land, these creatures are more susceptible to exploitation by humans for their meat, fur, or defence against farm animals.

The study concluded that PAs are essential for the preservation of tropical biodiversity and have the capacity to slow down the rate of rapid biodiversity reductions. They only make up a small portion of the terrain, though, and the preservation of them was dependent on a number of anthropogenic stresses operating both inside and outside the protected zones.

According to the report, anthropogenic stressors in and around these places are anticipated to increase due to the growing human population, their activities, and consumption.

"Protected areas should, whenever possible, be integrated with initiatives to lessen extensive forest fragmentation. By preserving and enhancing landscape connectivity, for instance, through habitat restoration," it said.