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A Review of the Environmental Impacts of Lead Shotshell Ammunition and Lead Fishing Weights in Canada
This report reviews the available information on the use, environmental fate, and toxicity of spent lead shot and lost lead fishing weights. The report begins with a summary of information on the production, import, and use of lead shot and fishing sinkers in Canada. It then discusses the fate of these products in the environment, including chemical transformation of metallic lead in the environment, lead concentrations in soils and biota, and factors affecting the environmental mobility of lead compounds. The next section assesses the toxicity of lead shot and sinkers to waterfowl and non-waterfowl species, effects of lead shot ingestion in cattle, and human health concerns about hunting with lead shot. The report ends with a discussion of options for managing the negative impacts of those products, including using alternatives to lead, restricting use of lead shot, and alternative fishing sinker products.
Lead Fishing Sinkers and Jigs in Canada
"More than 5 million Canadians take part in recreational angling each year, spending over 50 million days fishing on open water. Recreational anglers contribute to environmental lead deposition through the loss of lead fishing sinkers and jigs. Each year, lost or discarded fishing sinkers and jigs amounting to an estimated 500 tonnes of lead, and representing up to 14% of all nonrecoverable lead releases in Canada, are deposited in the Canadian environment. Wildlife, primarily piscivorous birds and other waterbirds, ingest fishing sinkers and jigs during feeding, when they either mistake the sinkers and jigs for food items or grit or consume lost bait fish with the line and weight still attached."--from Abstract.
Canadiana
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Occasional Papers
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