Why spring smelt sweeter in the past: Scientists say pollution from diesel fumes is damaging the scent of plants

Five of the most common floral aromas in our gardens – lavender, daffodils, roses, snapdragons and lilies – are affected

 

  • A scientist says that diesel fumes especially are damaging flowers’ scents
  • Flowers like lavender, daffodils, roses, snapdragons and lilies are affected
  • Dr Robbie Girling believes that bees’ difficulty in sniffing out flowers may be contributing to their decline 

 

As the garden returns to bloom, you may have found yourself lamenting how the scents of spring are not as vivid as they once were.

But while claiming things were better in your day is usually dismissed as nostalgia, it seems flowers really did smell sweeter in the past.

A British scientist says pollution, especially from diesel fumes, is damaging the scent of plants in towns and cities and making them harder to detect from a distance.

The phenomenon of pollution snuffing out floral scents was described in the New Scientist last month, which explained how pollinating insects distinguish between plants using the unique bouquet of chemicals they release

The phenomenon of pollution snuffing out floral scents was described in the New Scientist last month, which explained how pollinating insects distinguish between plants using the unique bouquet of chemicals they release

Five of the most common floral aromas in our gardens – lavender, daffodils, roses, snapdragons and lilies – are affected.

Nitrogen oxide (NOx), mainly from diesel cars, harms the compounds that create their scents.

 

Nitrogen oxide (NOx), mainly from diesel cars, harms the compounds that create their scents

 Dr Robbie Girling, from the University of Reading who is leading a study on diesel emissions, believes bees’ difficulty in sniffing out flowers may be contributing to their decline.

He said: ‘I have spoken to amateur beekeepers in the past who insist during rush hour they cannot smell the flowers in their garden.’

Guy Barter of the Royal Horticultural Society described the study’s findings as ‘concerning’ but ‘not surprising’.

Source: http://www.dailymail.co.uk/sciencetech/article-5511979/Scientists-say-pollution-damaging-scent-plants.html

 

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