Impact of Environmental Toxicants on Biodiversity

Mudansiru A., Aliero A. A., Ibrahim S., Haidara A. M.


The impacts of environmental toxicants on biodiversity were examined with the view of investigating how they occur and to propose possible measures to be taken in reducing them. Environmental toxicants are substances present in the environment in a state or concentration that is capable of causing harm or injury on exposure through a particular route and circumstances on humans, plants or any other living organism. Toxicants have played a key role in changing the distribution pattern of many animal and plant species by direct toxicity or by affecting their habitat and/or their source of food. The paper reviewed different classes of environmental toxicants such as carcinogens, mutagens, teratogens, allergens and neurotoxicants; their sources which may be point or non-point defending on whether or not their point of entry into the environment is identifiable, exposure and toxicity in the body system which may be acute or chronic. The entry and fate of these toxicants in the environment and their harmful effect on individuals, populations, communities and ecosystems were also documented. Toxicants persistence in the environment as well as their impacts on biodiversity survival was also reviewed. The paper suggests options that could be helpful in mitigating the effect of toxicants in the environment. These measures include public awareness, banning from both production and use, restriction of exposure and measures to reduce effect.

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MAYFEB Journal of Biology and Medicine
Toronto, Ontario, Canada
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