The arcitle was published in NATURE.com site, , by Richard A. Lovett, on the 19th of November ,2012 and discusses the theme, which states " How birds are used to monitor pollution."
The first thing that needs to be said is , that Nesting birds that feed on insects that hatch in lake or stream-bed sediments may make good biomonitors for pollution. The author adds the explanation of these words ,because any contamination in the sediment will make its way into the birds and into their eggs and young. Lovett can't ignore the fact, that tree swallow (Tachycineta bicolor), which still showed "significant quantities" of toxic chemicals called polychlorinated biphenols in its eggs and chicks seven years after remediation efforts started at a former capacitor-manufacturing plant in Crab Orchard National Wildlife Refuge in southern Illinois. The author points out the fact, that advantage of using swallows for such work is that they are known to forage over fairly small distances, rarely more than 500 metres from their nests. Analysing the situation, it's neccessary to admitt, that researchers can attract them to areas of interest simply by putting out nesting boxes on poles, because nesting sites are the birds' most important environmental limit. It wouldn't be unfair for Lovett not to say, that it can even help the birds, because the presence of nesting boxes improves the birds' habitat and the loss of a few eggs and nestlings to researchers isn't likely to hurt the species. It's a noticeable fact that, that swallows are not the only birds being used for such purposes, because the usage of homing pigeons to monitor air quality is also a very efficient way of monitoring. To draw the conclusion, the author says that, he lungs and livers from the birds from Beijing contained three or four times more polycyclic aromatic hydrocarbons, common by-products of fossil-fuel burning, than did those from areas with better air quality.
In conclusion, I'd like to say, that this superb method of monitoring differen pollution changes in the environmental sphere is fairly effective. Birds were used for many ages in delivering of important messages , either the bad news or good one. But even now, after several centuries of technological development and the evolution of the whole world and world of communication particulart, the birds are used in the same way - they will either maintain positive or negative information for humanity.
http://www.nature.com/news/how-birds-are-used-to-monitor-pollution-1.11848
The first thing that needs to be said is , that Nesting birds that feed on insects that hatch in lake or stream-bed sediments may make good biomonitors for pollution. The author adds the explanation of these words ,because any contamination in the sediment will make its way into the birds and into their eggs and young. Lovett can't ignore the fact, that tree swallow (Tachycineta bicolor), which still showed "significant quantities" of toxic chemicals called polychlorinated biphenols in its eggs and chicks seven years after remediation efforts started at a former capacitor-manufacturing plant in Crab Orchard National Wildlife Refuge in southern Illinois. The author points out the fact, that advantage of using swallows for such work is that they are known to forage over fairly small distances, rarely more than 500 metres from their nests. Analysing the situation, it's neccessary to admitt, that researchers can attract them to areas of interest simply by putting out nesting boxes on poles, because nesting sites are the birds' most important environmental limit. It wouldn't be unfair for Lovett not to say, that it can even help the birds, because the presence of nesting boxes improves the birds' habitat and the loss of a few eggs and nestlings to researchers isn't likely to hurt the species. It's a noticeable fact that, that swallows are not the only birds being used for such purposes, because the usage of homing pigeons to monitor air quality is also a very efficient way of monitoring. To draw the conclusion, the author says that, he lungs and livers from the birds from Beijing contained three or four times more polycyclic aromatic hydrocarbons, common by-products of fossil-fuel burning, than did those from areas with better air quality.
In conclusion, I'd like to say, that this superb method of monitoring differen pollution changes in the environmental sphere is fairly effective. Birds were used for many ages in delivering of important messages , either the bad news or good one. But even now, after several centuries of technological development and the evolution of the whole world and world of communication particulart, the birds are used in the same way - they will either maintain positive or negative information for humanity.
http://www.nature.com/news/how-birds-are-used-to-monitor-pollution-1.11848
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the author says that, THE (not he)lungs and livers from...
Birds were used for many ages TO DELIVER important messages...
They will MAINTAIN EITHER positive or negative information for humanity.
Mind your spelling: neCessary, admiT, etc