Around a third of the food we eat is estimated to be dependent on bee pollination.
In providing this pollination service, bees literally contribute billions in cash to the world economy.
In fact, as I write this in October 2010, the United Nations have just published a report, in which they place a value on insect pollination at £134 billion (153bn Euros).
The reason for putting a financial value on things are understandable, though I think it's an exceedingly narrow means of measuring real value. Basically, it misses the point that biodiversity is priceless, but here are some financial values:
Estimations vary, but here are some figures:
US $: $40 billion per annum
Canada: C$1.2 billion per annum
European Union (EU): Euros 5 billion per annum (1989 figures)
Australia: Aus$156 million per annum
Source: cited in Bumblebee Behavious and Ecology, by Professor Dave Goulson, 2003.
Talk about biting the hand that feeds you! It's ironic that many farming policies are contributing to the demise of insects upon which the success of their crops depend!
When you consider how intricate the web of life is on this earth, the
value of bees and other insects to the eco-system is obvious. They’re
not only pollinating much of the food that we eat, they are also
ensuring the future generations of all kinds of plants that in turn
support other species.
Pavan Sukhdev, The Economics of Ecosystems and Biodiversity, United Nations report October 2010:
And so I think that focusing on monetary value underestimates the wider importance of insect and bee pollination, to the environment, people, other living creatures and the environmental stability of the planet as a whole, though I fully appreciate why it is done. I'd like to see more education and empathy for the importance of biodiversity for its own sake, not merely its direct usefulness to humans.
I'd also like greater recognition among those who make the rules and farm
our lands, that this ecosystem is an inter-related web of life, a giant
super-organism, with all the different species playing their role and
affected by the other creatures, all of which are doing their bit!
We tend to think of bees pollinating flowers and crops, and yet we easily forget about trees.
For example, chestnuts, fruit trees, many
nut trees, cotoneasters among many others, are pollinated by bees.
Let’s remember that trees are the lungs of the earth – so bees probably help us breathe too! And these trees provide important food and habitat for many creatures, which play a role in the food chain.
Well, I suppose instead of bee pollination, there’s always artificial pollination (or hand pollination) by humans – this is what the people in certain areas of China are doing in their apple and pear groves, having reportedly driven out the local pollinating bumblebee species with pesticide use. Honey bee pollination was attempted but was unsuccessful. Beekeepers are reportedly hesitant to rent their bee colonies because of excessive use of pesticide sprays on apples and pears. Artificial pollination is now a major undertaking, involving whole families - see the photograph below.
In the west, bee pollination is free when left to the wild bees, or is available through renting or purchasing colonies of bees - at least for now.
So how do bees pollinate? I have a whole page explaining the plant pollination process. However, to describe briefly here, bees pollinate by carrying pollen on their bodies from the male part (the ‘stamen’) of one flower to the female part (the ‘carpel’) of another flower.
Do Bees Other Than Honey Bees Pollinate?
Some different types of bees are more efficient than others for pollinating particular plants.
If we take the time to observe what is
happening in our gardens, we may see several different bee species
pollinating our flowers, including various bumblebee species, but also
solitary bees, such as leafcutters, mining bees, carpenter bees or mason
“The way humanity manages or mismanages its nature-based assets, including pollinators, will in part define our collective future in the 21st century ……The fact is that of the 100 crop species that provide 90 per cent of the world’s food, over 70 are pollinated by bees.”
I have mixed feelings about this.
If agricultural landscapes are managed in harmony with nature, I believe it will pay us back, by pollinating our crops naturally by supporting insect populations.
My concerns currently are about agricultural systems that promote pesticide use and GMOs as well as habitat loss.
you have read my page about bumblebee pollination, then you'll know I'm
concerned about bee-welfare - as well as that of other insects and
living creatures. I worry our practices are short-termist only, and are
sentencing our wildlife, including our bees, to death.
The commercial rearing of native bees, (rather than using introduced, or non-naturalized species) to provide farmers with a pollination service, may seem like a good idea - and yes, it has merits, because it is a bad idea to bring in non-native species that could transmit new viruses and diseased to which the native species have not built resistance.
But for me, it is also like covering up the cracks in the wall, rather than dealing with the issues causing the problems at the foundation of the building.
First, I think we need to address the problems that are causing bees to die or dcline, before we start tinkering with our other native bee species.
Also, I feel we should never forget the importance of honey bees. Read my page here about why honey bees matter. To read more about some of the independent studies into pesticides, click here.
But for now, let’s take a look at other types of bees and pollination.
Problems have been highlighted around the consequences of
transporting commercially reared bees to areas outside of their native
ranges, and the impact on indigenous species. Read more
here (opens new window).
The excellent Xerces Society has also produced a wonderful guide for farmers wishing to encourage and establish native bee populations on their farms. There is a link to this report at the bottom of this page.
It is claimed that Albert Einstein is said to have estimated humans would have only 4 years to live if bees left the planet, although whether or not this is what he really said and meant is debatable and somewhat controversial.
However, E.O. Wilson, biologist and speaker, definitely did make the comment left - I know, because I have seen and heard the recordings of the speech he made in which he made the comment.
I don’t wish to sound alarmist, but I’m afraid I think it is also important to not underestimate the potential problems that could be caused, especially when we are dealing with the unknown.
I think we humans do not fully understand the intricate web of life that exists on this planet. Simple things are too easy to overlook, others have probably not been discovered yet.
Plant life in the sea has only recently been proven to be important to the quality of the very air we breathe. So what else is out there waiting for us to discover, and what if it provides some vital link in the chain – and then what if it happens to be rely on bees or other pollinators?
The good news is, everyone can do something to help bees. There are 10 simple things listed right here. Together, we can make a crucial difference. It has to start with individuals, like you and me.
Hey, if making a difference doesn’t start with individuals like you and I, then who will it start with?!
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