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  • 简介:DearEditor,Bomb-radiocarbonanalysisofmoderncarbonhasbeenappliedinmanyfieldsofecology.Themethodallowsde-terrniningtheresidencetimeofcarboninphotosyntheticproductsandthusaUorganicmatterinecosystems.Theatmospheric14Csignaturewillsoondropbelowthepre-bomblevelduetofixationofatmosphericcarboninter-restrialandmarineecosystemsandhighratesoflac-freefossilfuelcombustion.Hence,thetimeisrunningoutforbomb-radiocarbonapplication.Insectcollectionsshelteranimmensequantityofspecimensstoredinalcohol.Weshowhowthosespecimenscanbeusedforexploringthetrophicstructureoffoodwebsbycomparingtheirisotopicradiocarbonsignature.

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