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<p><b>New page</b></p><div>'''Bioindicator'''<br />
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A '''bioindicator''' is an organism or biological response that reveals the presence of the environmental conditions in a particular ecosystem. Bioindicators can inform us about the cumulative effects of different pollutants in the ecosystem and about how long a problem may have been present, which physical and chemical testing cannot.<br />
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==Types of Bioindicators==<br />
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Bioindicators can be plants, animals or microorganisms. Each of these groups has specific species that are sensitive to specific types of pollutants.<br />
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===Plants as Bioindicators===<br />
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Certain [[plants]] can serve as bioindicators. For example, [[lichen]]s are sensitive to air pollutants like sulfur dioxide and can therefore be used to indicate air quality. Other plants, such as the water hyacinth, can indicate water pollution.<br />
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===Animals as Bioindicators===<br />
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[[Animals]] can also serve as bioindicators. Amphibians, for example, are often used as bioindicators because their permeable skin and life cycle, which involves both aquatic and terrestrial phases, make them sensitive to environmental changes.<br />
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===Microorganisms as Bioindicators===<br />
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[[Microorganisms]], including bacteria and fungi, can also be used as bioindicators. They are often the first to react to changes in environmental conditions because of their short reproduction times and their presence in all types of environments.<br />
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==Uses of Bioindicators==<br />
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Bioindicators are used in various fields such as [[ecology]], [[medicine]], and [[environmental science]]. They are used to monitor the health of an ecosystem, to detect the presence of pollutants, and to assess the effects of climate change and other environmental changes.<br />
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==See Also==<br />
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* [[Biomonitoring]]<br />
* [[Environmental indicator]]<br />
* [[Ecological indicator]]<br />
* [[Indicator species]]<br />
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==References==<br />
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<references /><br />
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[[Category:Ecology]]<br />
[[Category:Environmental science]]<br />
[[Category:Medicine]]<br />
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{{ecology-stub}}<br />
{{medicine-stub}}</div>Prab