Immigration’s a hot topic – and it applies to non-native plants, animals and insects, all over the world | Tim Blackburn
forRitain will be a barren land if not for immigration. Fifteen thousand years ago, most of the country was buried one kilometer in ice – not the ideal conditions for life. Everything has changed when we moved from another Ice age In the most moderate current climatic stage. The ice sheets retreated, leaving an empty natural view of anything with the opportunity and move. The result was the original homes where almost all species are immigrants. Our ancestors were among them.
Migration is a natural process, but it was mainly changed thanks to the wandering of humanity. Since we moved all over the world, we took many other types with us – some of them intentionally, and some by mistake – to the areas they could not reach without helping us. These include many more than residents of the British countryside. Gray squirrel, ringing parrot, horse chestnut, Rhodindone None of these will be in Britain if they are not brought by people. They are what foreign environmental scientists call. Anywhere people live you will also find foreigners.
The exotic gas species (IAS) are migrants, but of a kind of unparalleled nature. Most natural colonists come from near. Now, anything can be largely to get anywhere anywhere. Japanese Knotweed, Giant Round ((GunneraThe Canadian Himalayas and the Canadian bonds are foreigners who live in Britain. Natural colonists need to obtain the necessary features to make the trip to a new environment, but foreigners do not. Mice did not have strokes to reach the Ceyline Islands, but humans gave a hand. Likewise, boats to okney. the Midge EERETMOPTERA MURPHYI He made it from southern Georgia to the Antarctica Peninsula, 500 miles, although it is without flight.
Humans have been transporting species for thousands of years, but the rate with which foreigners have rushed. During most of the past 500 years, a new type of strange species has emerged almost every month or so, or about seven new foreigners around the world. The rate of arrival began to rise in the mid -eighteenth century, as trade routes were organized between European colonial powers and their property. He has continued to climb since then. By the end of the twentieth century, it appeared more than one new strange type somewhere every dayOn average. More types of strange birds during 17 years between 1983 reached more than 2000 than it was In 400 years Between 1500 and 1900.
The rate in which foreigners reach accelerate, as well as the rate in which expatriates spread. Take 1000 types of strange insects Expand all over Europe. During most of the past two centuries, they have spread at a rate of 3.3 km on average a year – not especially in particular, but move. This speed increased slowly – to 12.1 km/year for insects that were first seen between 1970 and 1989 and 37 km/year for insects that appear after 1989.
The reasons for the great foreign acceleration are very clear. Humans have always traveled, but within a few centuries, we moved from the winds driven by winds to diesel vessels, and now the planes. We move further, faster and more bright to carry goods with us. Commercial deals eliminate borders and reduce the chances of foreigners’ objection, but this trade also provides a request for new species. At least 1000 species of exotic mammals, 2600 species of birds and 2200 types of reptiles It was circulated in the international market Between 1975 and 2021, it is more likely as strange pets. The Internet facilitates this. It is easy to find websites where you can buy 60 different types of spider, 50 scorpion and dozens of other types of invertebrates. Seat for the plant of the Royal Association of Gardening Lists More than 70,000 plant species available for sale in Britain, and the vast majority of them will be strange given our original plant Only about 1750 species. Any plant comes with soil that may bring invertebrates and microbes as well. Even the Colombian trees frog, in a good one The modern issue.
You may have been told that the biological diversity is good, so why not welcome all these foreigners? The brief answer is that foreigners have effects. Foreigners pay the extinction of the naive indigenous population – they were completely responsible or partial for more Endowment in the past 500 years From any other reason, even the destruction of habitats. Foreigners affect human health – think about malaria or yellow fever in the Americas – and it is estimated that they erase at least 423 billion dollars Outside global economies. This may not seem much, but it is nearly half of the developing countries Under the pretext they need Annually by 2030 to combat the devastating effects of climate collapse. It is true that most foreigners have no effects (or they have no yet), but we often do not know which of them will be late.
We have a moral duty to address the environmental problems that caused them, and there is a lot that we can do to stop the wave of strange species. Strict biological security regulations reduced The rate of foreign plants in New Zealand to zero, and they have them Significantly The arrival of new foreigners in the Great Lakes in North America. Public awareness of threats – the more the problem is observed earlier, the easier the easier to deal with it. Vigilance by beekeepers and the broader audience (so far) Prevented From the Asian bee bee in the United Kingdom. While some people may link the effects of this – fatal control over strange species is often required – looking at the other direction is simply the choice around the place of death. Asian Hornz or honey bees. Skyage mice or marine bird chicks and eggs they consume.
