Sentences with phrase «of wild bees»

Unfortunately the numbers of wild bees available in the areas in which they are grown have declined.

Researchers have found that flowers are a hot spot of transmission of bacteria that end up in the microbiome of wild bees.

The creation of the sculpture was informed by the artist's frightening childhood memory of disturbing a nest of wild bees during a family hike.

To map the abundance of wild bees across the country, this model combines a number of databases with expert opinion.

Our results suggest that emerging diseases, spread from managed bees, may be an important cause of wild bee decline.»

Greenleaf and Kremen counted 33 species of wild bee in the sunflower fields of Central Valley in California.

Dropping populations of wild bees in agricultural areas could affect crop pollination and result in higher costs for farmers, researchers report December 21 in the Proceedings of the National Academy of Sciences.

A promising study published last autumn by ecologists Sarah Greenleaf of the University of California at Davis and Claire Kremen of the University of California at Berkeley found that the presence of wild bees increases the efficiency of sunflower pollination fivefold.

Part of this will involve extensive breeding programs (which work better in desert regions than in jungles, where there are lots of wild bees messing up the gene pool) and part will involve educating beekeepers and fighting a stereotype that African bees are always bad and European ones good.

In 2008, Tscharntke selected nine major strawberry varieties and planted them in an experimental field with plenty of wild bees and domesticated honey bees living nearby.

Researchers have estimated the value of wild bee crop pollination in the U.S. at $ 3.1 billion a year; honeybee pollination is worth roughly $ 15 billion.

The results show that numbers of wild bees likely declined by 23 % between 2008 and 2013 in key agricultural regions in California, the Midwest, in Great Plains states and in the Mississippi river valley.

The researchers believe that the scale of wild bee decline will push farmers to rely even more heavily on commercial honey bee operators who travel across the US, hiring out colonies for pollination.

The study suggests that between 2008 and 2013, the numbers of wild bees went down across almost a quarter of the US.

More than 900 species of wild bees are found in France, but many of them — such as bumblebees — are in decline.

The evidence against neonicotinoids now exists in key bee brain cells involved in learning and memory, in whole bees, entire colonies and now at the level of whole populations of wild bees.

A team of researchers, including several from the University of California, Riverside, have found that flowers are a hot spot of transmission of bacteria that end up in the microbiome of wild bees.

On average, only 2 % of wild bee species were responsible for 80 % of the pollination visits witnessed by researchers around the world, according to a study published Tuesday in the journal Nature Communications.

The scientists concluded that loss of preferred wildflowers is one of the primary factors responsible for the decline of wild bees, and of their declining body size (the bigger the bee, the more pollen is needed).

Populations of wild bees and other pollinating species, including butterflies and moths, birds and bats, are being pushed to extinction at startling rates.