Terrestrial Flora and Invertebrates

Bacteria exposed to cyanide may exhibit decreased growth, altered cell morphology, decreased motihty, mutagenicity, and altered respiration. Mixed microbial populations capable of metabolizing cyanide and not previously exposed to cyanide were adversely affected at 0.3 mg HCN/kg however, these populations can become acclimatized to cyaiude and can then degrade wastes with 

Free cyanide is not found in intact plant cells. Many species of plants, such as cassava, sorghum, flax, cherries, almonds, and beans, contain cyanogenic glycosides that release HCN when hydrolyzed. Cyanide poisoning of livestock by forage sorghums, such as Sudan 

Resistant species, such as southern army-worms, require injected doses up to 800.0 mg 

KCN/kg BW (332.0 mg HCN/kg BW) or diets of 3600.0 mg KCN/kg for 50% mortality, but data are scarce for other terrestrial invertebrates. Exposure to 8.0 mg HCN/L air inhibits respiration in the granary weevil (Sitophilus granarius) within 15 min and kills 50% in 4 h some weevils recover after cessation of 4-h exposure. 

Fish were the most sensihve aquahc organisms tested. Significant adverse nonlethal effects, including reduced swimming performance and inhibited reproduction, were observed in the range of 5.0-7.2 xg free cyanide/L deaths were recorded for most 

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LETHAL AND SUBLETHAL EFFECTS 15.9.1 Terrestrial Flora and Invertebrates... 

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