Grants, weed corners, and imaginary gardens are all in the cities of bees and other pollinators, the study is open.
In recent years, the great loss of bees caused by the loss of wildlife and the use of pesticides has largely been caused by cities, but cities are proposed as potential places of refuge.
The first study to examine all types of land use in towns has identified pollen favorite sites and flowers, many of which are often considered as weeds. More than 50 people spent two years studying pollinators and plants in Bristol, Edinburgh, Leeds and the Reading Room.
The results allowed them to develop the best ways to support a rich combination of pollinator species that will be resistant to climate change and other challenges. The best strategy is to increase the number of allocations, the report says. Planting in gardens also helps rarely, as well as rarely cutting grass in public parks, allowing flowers to bloom.
Grants are especially good for pollinators because they provide a combination of fruit and vegetable flowers, as well as a weed corner full of local plants. "Grants are very important at city level, despite their small size," said Catherine Baldock at Bristol University, which led the research. "They are a good place where pollinators can hang out and provide a win-win situation because they are also good for food and human health."
The study, published in Nature Ecology and Evolution, found that gardens and gardens often contained 10 times more bees than parks, cemeteries, and urban nature reserves. Baldoka said that nature reserves were important for other wildlife, but were often less suitable for pollinators, where trees rather than meadows dominate.
Scientists also identified flowers most visited by bees, rocks and other pollinators. The native favorites were brambles, buttercups, dandelions, shabby thistle, common horse and liver eye daisies. "People tend to think of these weeds, but they are really important to pollinators," Baldox said.
She said that gardeners have played an important role in preserving pollinators, and that the local plants that attracted the most pollinators were lavender, borage, butterfly bushes and common pretzels. Hydrangea and forgotten girls were one of the least favorite. The researchers found that the gardens in the much richer areas were more pollinators due to the fact that there are more flowers and many different plants.
Stephanie Bird, from the Royal Horticultural Society, said: “This new document shows that gardens are a very important resource for pollinators in cities. We encourage the UK's 27 million gardeners to pack in different plants, because not all pollinators can access the nectar of each plant and consider introducing all the flowers throughout the season. RHS is now working with the University of Bristol to find which plants produce the most nectar.
The gardens are covered by a quarter to a third of the city, which is far more than the allocations that cover less than 1%. But by increasing the area of donations, the biggest increase is in pollinators per unit area.
"It would be great if the government tried to release more land to get the funds," said Dave Goulson, professor at the University of Sussex. “There are currently around 90,000 people on the waiting lists to get one. Given that these areas also produce healthy fruit and vegetable consumption for the local, zero-mile food consumption and people get out of the open, it seems that the allocations in our cities play an important role. ”
Harmful pesticides from bees are banned on farms across the EU, but some are still sold to gardeners. "If we really want to maximize the value of the urban environment for wildlife, we would do well to stop using pesticides in our gardens and parks," said Goulson.
Urban pollinators are less studied than in rural areas, so the role of cities and cities in their survival is only developed. The most extensive study so far done is little different in their abundance, probably because they are both poor habitats, and many rural areas are dominated by agricultural land and cities dominated by concrete and asphalt.
"Maybe we could see our cities as huge nature reserves, places where man and nature can live side by side," said Goulson.