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Economic value of insect pollination worldwide estimated at 153 billion euros
Date:9/15/2008

pollinators for their production was on average much higher than that of the crops not pollinated by insects, such as cereals or sugar cane (760 and 150 per metric ton, respectively). The vulnerability ratio was defined as the ratio of the economic value of insect pollination divided by the total crop production value. This ratio varied considerably among crop categories with a maximum of 39% for stimulants (coffee and cocoa are insect-pollinated), 31% for nuts and 23% for fruits. There was a positive correlation between the value of a crop category per production unit and its ratio of vulnerability ; the higher the dependence on insect pollinators, the higher the price per metric ton.

From the standpoint of the stability of world food production, the results indicate that for three crop categories namely fruits, vegetables and stimulants the situation would be considerably altered following the complete loss of insect pollinators because world production would no longer be enough to fulfil the needs at their current levels. Net importers, like the European Community, would especially be affected. This study is not a forecast, however, as the estimated values do not take into account all the strategic responses that producers and all segments of the food chain could use if faced with such a loss. Furthermore, these figures consider a total loss of pollinators rather than a gradual decline and, while a few studies that show a linear relationship between pollinator density and production, this must be confirmed.

The consequence of pollinator decline on the well being of consumers, taken here in its economic sense, was calculated based on different price elasticities of demand. The price elasticity represents the effects of price change on consumer purchase, that is, the percent drop in the amount purchased following a price increase of 1%. In our study, we assumed that a realistic value for the price-elasticities would be between -0.8 and -1.5 (fo
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Contact: Tilo Arnhold
presse@ufz.de
49-341-235-1635
Helmholtz Association of German Research Centres
Source:Eurekalert  

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