A new global study shows that adding more trees around broken forest areas can greatly help wildlife survive. Even small patches of forest can support many species if the land around them is green and full of trees. Scientists from different countries worked together on this research. The study was published in Proceedings of the National Academy of Sciences (PNAS). It was led by the University of East Anglia, with support from the University of Birmingham.
The researchers found that forests surrounded by tree-filled, wildlife-friendly land have far more bird species. This is compared to forests next to open water or badly damaged land. Some small forest patches had more than twice as many bird species when trees were nearby. The team studied over 1,000 forest fragments.
These were located in tropical and subtropical regions across the Americas, Africa, and Asia. The data was used from 50 large bird surveys. In total, 2000 bird species were observed. Some of these birds are at high risk of extinction. The list includes species listed as Critically Endangered, Endangered, and Vulnerable. The study found that these sensitive forest species benefit the most from better surroundings.
The researchers also looked at different types of forest isolation. One example was “forest islands” created by hydroelectric dams. These are forests cut off by large bodies of water. This phenomenon is one of the most extreme forms of habitat loss. They compared these to forests surrounded by farmland or other land areas.
The results challenge older ideas in ecology. In the past, scientists focused mainly on the size of a forest and how isolated it was. Scientists viewed larger and less isolated forests as more beneficial for wildlife. But this new study indicates that the surrounding land also plays a key role. This surrounding land is called a “matrix.” It includes farms, grasslands, and urban areas. If this matrix has more trees and natural vegetation, animals can move more easily. It also provides them more places to obtain food and shelter.
One key finding was about distance. Even a small increase in tree cover within 300 metres of a forest patch made a big difference. It reduced the risk of local extinction for many bird species. This trend was especially true for birds that depend on forests.
Experts say this development is great news for conservation efforts. We don’t always need large, untouched forests to protect wildlife. Even small actions can make a big difference. Planting native trees, restoring green spaces, and making farms more friendly for animals can all help species survive and thrive.
The study also shows that human-used land is important. Farms and cities are spreading fast. Making these areas better for wildlife is now very important, as it can help mitigate the negative impacts of urbanisation and agricultural expansion on biodiversity. Planting more trees and adding natural features can help many different species survive and thrive. The researchers believe their work can guide future policies and conservation efforts worldwide.
Governments and planners can use this information to design better land-use strategies. It can also support reforestation projects and climate action plans, such as initiatives aimed at restoring degraded lands and enhancing biodiversity. Overall, the message is clear. Forests do not exist alone. What surrounds them matters just as much. By improving the land around forests, we can help more species survive, even in areas that have already been heavily changed by humans, such as urban or agricultural landscapes, by enhancing habitat connectivity and restoring ecological functions. This is one of the most detailed global studies on this topic. It brought together 58 scientists from 19 countries. They worked as a team to understand how nature can be protected. Their findings are clear. Simple actions can help a lot. Planting more trees is one example. It can improve habitats for animals. It can also increase the number of species. Even small changes can support wildlife around the world.
