[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/alien-species.mp3″]Non-native, or alien species are plants or animals that humans have moved around the world to places where they are not naturally found. [sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/purpose.mp3″]Sometimes the introduction of an alien species to an area is accidental. Sometimes, it is done on purpose.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/pathways.mp3″]Research shows the movement of plants and animals rose across the planet over the last century as human trade and travel opened up new worldwide pathways.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/crustaceans.mp3″]A new study predicts such movements are likely to continue, with the largest increases expected to be big insects, birds and small creatures such as mollusks and crustaceans.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/species.mp3″]Researchers are calling for more rules and better observation methods to help reduce the spread of alien species.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/Biology.mp3″]The findings were recently reported in the publication Global Change Biology.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/Scientists-involved.mp3″]Scientists involved in the study say more than 35,000 alien species had been identified in the most recent report on the subject in 2005. [sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/Some-of-the-species.mp3″]Some of the species can go on to become invasive, meaning they spread quickly in undesirable and harmful ways.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/Europe.mp3″]The study suggests alien species introductions will increase on every world continent. But the largest increases are predicted to be in Europe. [sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/The-researchers.mp3″]The researchers estimate such species will increase 64 percent across Europe by around 2050.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/Research-Centre.mp3″]Hanno Seebens is an ecologist at Germany’s Senckenberg Biodiversity and Climate Research Centre. [sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/He-was-the-lead.mp3″]He was the lead writer of the study. «Together with climate change and land use change, invasive alien species are posing one of the greatest threats to biodiversity,» — Seebens said.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/He-added.mp3″]He added that a species can only arrive in a new area when human activity connects different areas. [sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/When-we-extended.mp3″]“When we extended our trade networks, we connected more and more (areas), which allowed more and more species to come.”
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/developed.mp3″]The researchers developed a mathematical model to predict alien species introductions for each continent between 2005 and 2050. [sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/was-based.mp3″]The model was based on past records of alien species introductions, as well as estimates of species that could end up becoming invasive if current movements continue.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/Cascade-Sorte.mp3″]Cascade Sorte is a professor of ecology and evolutionary biology at the University of California Irvine. She was not part of the research. “We know that a certain proportion of alien species will be problematic, so the more of them that there are, the higher the likelihood that we’ll have problems,” she said.
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/Sorte-described.mp3″]Sorte described the latest predictions as “shocking” because even with the past rises in alien species, “there’s even a possibility that things can get worse.”
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/However.mp3″]However, Hanno Seebens said it is possible the number of species could fall in the future based on continued rising movements. [sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/run-out.mp3″]“We may just run out of species to be transported, because at some point, all species may have been transported already,” he said.
I’m Bryan Lynn.
Words in This Story
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/accidental.mp3″]accidental — случайность
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/pathways2.mp3″]pathways — пути
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/observation-methods.mp3″]observation methods —методы наблюдения
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/alien-species2.mp3″]alien species — чужеродные виды
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/help-reduce.mp3″]help reduce — методы наблюдения
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/involved.mp3″]involved — причастный, вовлечённый
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/invasive.mp3″]invasive — инвазивный, чужеродный
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/192.mp3″]undesirable — нежелательный, неподходящий
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/harmful-ways.mp3″]harmful ways — вредные пути, вредные способы
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/introductions.mp3″]introductions — введения
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/increase-on.mp3″]increase on — продолжать увеличиваться
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/researchers-estimate.mp3″]researchers estimate — оценка (расчёт) исследователей
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/threats-to-biodiversity.mp3″]threats to biodiversity — угрозы биоразнообразию
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/we-extended.mp3″]we extended — мы расширили
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/estimates.mp3″]as well as estimates — а также расчёты
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/if-current.mp3″]if current — если текущий
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/evolutionary-biology.mp3″]evolutionary biology — эволюционная биология
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/certain-proportion.mp3″]certain proportion — определенная доля
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/likelihood.mp3″]likelihood — вероятность
[sc_embed_player fileurl=»https://helenaenglish.ru/wp-content/uploads/2020/10/latest-predictions.mp3″]latest predictions — последние прогнозы
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