Study Finds Air Quality Devices Collect DNA from Environment
2023-06-23
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1A new study has found that devices used to measure air quality in the environment also take in DNA material from the local area.
2Scientists say this collected DNA can be useful in identifying what plants and animals have been in the area.
3It could also help document changes in the environment over time.
4Researchers say the finding suggests air quality measuring devices have collected large amounts of biodiversity data.
5But the collection efforts have not been recognized until now, said Elizabeth Clare.
6She is a biologist at Canada's York University and a lead writer of the study.
7As animals and plants go through their life cycles, they leave small pieces of themselves in the environment.
8This includes materials such as fur, feathers or pollen that identify their genetic makeup.
9Scientists have long known this kind of environmental DNA can float in water.
10They have even used it to follow, or track, different species in lakes and rivers.
11But it has been much harder to get a genetic picture of animals living on land, said Kristine Bohmann.
12She studies environmental DNA at the University of Copenhagen. She was not involved in the latest study.
13In 2021, both Bohmann and Clare worked on similar projects to see whether they could pull animal DNA from the air.
14After setting up collection equipment in local zoos, the teams were able to capture and examine DNA from many different species.
15After seeing success in that process, the researchers wanted to expand their efforts to larger areas.
16In the latest study, Clare and her team tested air filters from two measuring stations, one in London and one in Scotland.
17The two places are part of a large network that tests for pollution.
18After getting DNA from pieces inside the air filters, the team was able to identify more than 180 different kinds of plants and animals, study writer Joanne Littlefair said.
19She is a biologist at Queen Mary University of London.
20The filter data identified many different life forms, including grasses, fungi, deer, hedgehogs and songbirds, Littlefair said.
21Now, the team hopes to capture DNA data on ecosystems all over the world.
22Clare noted that even though biodiversity issues affect the whole world, it is hard to carry out widespread testing.
23James Allerton is an air quality scientist at Britain's National Physical Laboratory.
24He told The Associated Press that it is much easier to use capturing systems that are already in place.
25Allerton noted that many countries have networks to measure air quality.
26Some also store their old filters for many years.
27He said such data could help demonstrate how ecosystems have changed over time.
28Fabian Roger is working on a similar project at ETH Zurich in Switzerland.
29He wrote in an email to the AP that more research will be needed to see if data from the filters can show real biodiversity changes over time.
30Roger added that he finds it exciting that an existing system could help track wildlife across large areas in the environment.
31I'm Bryan Lynn.
1A new study has found that devices used to measure air quality in the environment also take in DNA material from the local area. 2Scientists say this collected DNA can be useful in identifying what plants and animals have been in the area. It could also help document changes in the environment over time. 3Researchers say the finding suggests air quality measuring devices have collected large amounts of biodiversity data. But the collection efforts have not been recognized until now, said Elizabeth Clare. She is a biologist at Canada's York University and a lead writer of the study. 4As animals and plants go through their life cycles, they leave small pieces of themselves in the environment. This includes materials such as fur, feathers or pollen that identify their genetic makeup. 5Scientists have long known this kind of environmental DNA can float in water. They have even used it to follow, or track, different species in lakes and rivers. But it has been much harder to get a genetic picture of animals living on land, said Kristine Bohmann. She studies environmental DNA at the University of Copenhagen. She was not involved in the latest study. 6In 2021, both Bohmann and Clare worked on similar projects to see whether they could pull animal DNA from the air. After setting up collection equipment in local zoos, the teams were able to capture and examine DNA from many different species. 7After seeing success in that process, the researchers wanted to expand their efforts to larger areas. 8In the latest study, Clare and her team tested air filters from two measuring stations, one in London and one in Scotland. The two places are part of a large network that tests for pollution. 9After getting DNA from pieces inside the air filters, the team was able to identify more than 180 different kinds of plants and animals, study writer Joanne Littlefair said. She is a biologist at Queen Mary University of London. 10The filter data identified many different life forms, including grasses, fungi, deer, hedgehogs and songbirds, Littlefair said. Now, the team hopes to capture DNA data on ecosystems all over the world. Clare noted that even though biodiversity issues affect the whole world, it is hard to carry out widespread testing. 11James Allerton is an air quality scientist at Britain's National Physical Laboratory. He told The Associated Press that it is much easier to use capturing systems that are already in place. 12Allerton noted that many countries have networks to measure air quality. Some also store their old filters for many years. He said such data could help demonstrate how ecosystems have changed over time. 13Fabian Roger is working on a similar project at ETH Zurich in Switzerland. He wrote in an email to the AP that more research will be needed to see if data from the filters can show real biodiversity changes over time. Roger added that he finds it exciting that an existing system could help track wildlife across large areas in the environment. 14I'm Bryan Lynn. 15The Associated Press reported this story. Bryan Lynn adapted the report for VOA Learning English. 16_______________________________________________________________ 17Words in This Story 18biodiversity - n. the number and kind of plants and animals that exist in a particular area 19species - n. a group of animals or plants that are similar and can produce young animals or plants 20filter - n. a device that removes a specific substance from something else 21ecosystem - n. all the living things in an area and the way they affect each other and the environment 22__________________________________________________________________ 23What do you think of this story? We want to hear from you. We have a new comment system. Here is how it works: 24Each time you return to comment on the Learning English site, you can use your account and see your comments and replies to them. Our comment policy is here.