Impact of Environmental Toxicants on Biodiversity

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

Abstract


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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Tetsuo S. and Salman H. (2010). Environmental Toxicology and Human Health. Biomedical Research Institute and Chiba University, Chiba, Japan. Encyclopedia of Life Support System, pp. 2-10.

Ernest H. (2004). A Textbook of Modern Toxicology. Published by John Wiley and Sons, Inc., Hoboken, New Jersey, pp. 82-91, 176-183.

Hodgson E. R. and Chambers J. E. (1998). Dictionary of Toxicology, 2nd ed. London: Macmillan, pp. 4-6, 56-57 and 380-389.

Klaassen C. D. (2008). Casarett and Doull’s Toxicology: The Basic Science of Poisons. 7th Edition. McGraw-Hill Medical Publishing Division, New York. pp. 23-56.

Greenspan F. S. and Strewler G. J. (1997). Basic and Clinical Endocrinology.Stamford, CT: Appleton and Lange, pp. 317.

Kavlock R. J., Daston G. P. and DeRosa D. (1996). Research Needs for the Risk Assessment of Health and Environmental Effects of Endocrine Disruptors: A Report of the US-EPA Sponsored Workshop. Environ Health Perspect (104) (4) pp. 715–740.

LeBlanc G. A. and Dauterman W. A. (2001). Conjugation and Elimination of Toxicants: In Introduction to Biochemical Toxicology, 3rd edn., E. Hodgson and R. C. Smart, eds. New York: Wiley, pp. 115–135.

Shanky B. (2013). Ecotoxicology & Impact on Biodiversity. Journal of Pharmacognosy and Phytochemistry. (2), pp. 2-15.

Lau K., McLean, W. G. and Williams, D. P.(2006). Synergistic Interactions Between Commonly Used Food Additives in a Developmental Neurotoxicity Test. Toxicol Sci (90), pp. 178–187.

Hemond H. F. and Fechner, E. J. (1994). Chemical Fate and Transport in the Environment. Academic Press. San Diego. pp. 338.

Scott B. and Jay H. W. (2004). Environment: The Science behind the Story. 2nd Edn. Benjamin Cummings Publishing Company. San Francisco, United State. pp. 204,

Newman M. C. and Unger M. A. (2003). Fundametals of ecotoxicology, 2nd edn. Lewis Publishers: Boca Raton, FL, pp (53), pp. 76, 95.

Doull J. (2001). Casarett and Doull’s Toxicology: The Basic Science of Poisons, 6th ed., C. D. Klaassen, ed. New York: McGraw-Hill, pp. 1115–1176.

Farmer A. M. (1990). The Effects of Lake Acidification on Aquatic Macrophytes - A Review, Environmental Pollution (65), pp. 219-240.

Lo C. C. (2010). Effect of Pesticides on Soil Microbial Community. J. Environ. Sci. Health Part B, (45), pp. 348-359.

Ling K. A. (2001). Air Pollution and Forest Decline in Europe, WWF International, Gland,

Cox R. M. (1992). Air Pollution Effects on Plant Reproductive Processes and Possible Consequences to their Population Ecology, in Air Pollution Effects on Biodiversity, New York pp. 306-316.

Turk, R. and Wirth V. (1975). The pH Dependence of SO2 Damage to Lichens, Oecologia (14), pp. 285-291.

Ashmore M. R., Bell, J. N. and Dalpra, C. (2011). Visible Injury to Plants Species by Ozone in the United Kingdom, Environmental Pollution (Series E) (21), pp. 209-215.

Alabama Nature Research [ANR] (2000). Air Pollution Damage to Plants. Alabama Corporate Extension System. Alabama and Auburn Universities Accessible through http://www.aces.edu/pubs/docs/A/ANR-0913/ANR-0913.pdf, accessed on 08/10/2015.

Ruiz J. M., Barreiro R. and Gonzalez J. J. (2005) Biomonitoring Organotin Pollution with Gastropods and Mussels. Mar Ecol Progr Ser (8), pp.169–176.

Linbo T. L., Stehr C. M., Incardona J. P. and Scholz N. L. (2006). Dissolved Copper Triggers Cell Death in the Peripheral Mechanosensory System of Larval Fish. Environ Toxicol Chem (25), pp. 597–603.

Ohlendorf H. M. (2002). The birds of Kesterson Reservoir: A Historical Perspective. Aquatic Toxicol (57) pp. 1–10.

Ylitalo G. M., Sten J. E. and Hom T. (2005). The Role of Organochlorines in Cancer Associated Mortality in California Sea Lions (Zalophus californianus).Mar Pollut Bull (50), pp. 30-39.

Barbour D. A. (1986). Why are there so Few Butterflies in Liverpool? - An answer, Antenna (10), pp. 72-75.

Petters R. M. and Mettus R. (1982). Reproductive Performance of Braconhebetor Female Following Acute Exposure to Sulphur Dioxide in Air, Environmental Pollution Series A (27), pp. 155-163, London.

Clausen I. H. S. (2007). Notes on the Impact of Air Pollution (SO2 and Pb) on Spider (Aranae) Populations in North Zealand, Denmark, Ent. Meddr. (52), pp. 33-39, Copenhagen.

Pough F. H. (1997). Acid Precipitation and Embryonic Mortality of Spotted Salamanders, Ambystoma maculatum, Science (192), pp. 68-70.

Guillette L. J., Crain D. A. and Gunderson M. P. (2000). Alligators and Endocrine Disrupting Contaminants: A current Perspective. Amer Zool (40) pp. 438–452.

Chilgren J. D. (1991). Small Mammals Investigation at ZAPS: Demographic Studies and Responses to Gradient levels of SO2, JST Inc. New York. pp 764-791.


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MAYFEB Journal of Biology and Medicine
MAYFEB TECHNOLOGY DEVELOPMENT
Toronto, Ontario, Canada
ISSN 2560-6948