Sentences with phrase «if viable populations»

Not exact matches

If free public transport may not be a viable option for cities like London or New York — Tallinn has a population of just over 400,000 — there are other service options, White says.

If the current fertility level continues, Europe's population of 727 million will plummet to 556 million by the year 2050, requiring more than three million immigrants per year for the next fifty years if Europe is to remain economically viablIf the current fertility level continues, Europe's population of 727 million will plummet to 556 million by the year 2050, requiring more than three million immigrants per year for the next fifty years if Europe is to remain economically viablif Europe is to remain economically viable.

After isolation, if members of the split populations encounter one another and can not produce viable offspring that can themselves later successfully interbreed and produce viable offspring (hybrids such as mules are infertile), then these two populations constitute two different species.

But «the continued deterioration of the Yangtze ecosystem,» he says, «means that the species has no hope of even short - term survival as a viable population in the river if it has not already disappeared.»

If we can get a viable population going, these will be spread to other botanical gardens and then some plants might be sold,» Smit adds.

A new University of Washington study finds that urban crops in Seattle could only feed between 1 and 4 percent of the city's population, even if all viable backyard and public green spaces were converted to growing produce.

Furthermore, the researchers suspect that even if habitat destruction were to halt in these areas, the remaining large animal species would have little chance of maintaining viable populations beyond the next few decades.

«Today, we have 700 to 750 individuals of the species,» says Martin, «but if action is not taken now, the white - headed duck could soon be outbred by the invading ruddy duck, and wiped out in Spain, the only Western European country with a viable population.»

«If we succeed with our project in introducing a new, viable population of alligator snapping turtles, it's likely that no one will see them,» Phillips said.

The samples, if handled properly, could be placed back into ecosystems to keep the gene pool diverse, which serves to keep populations health and viable.

You should not be able to culture a significant viable yeast population from a motion you have passed, if you can, it means you have a significant candida overgrowth in your large bowel.

If a device can not be used by all students or a strong majority of the population, they are considered not a viable investment of the school's money and alienates specific students.

The real question is what population size can maintain technology sufficient to provide good healthcare, that enables us to colonise other planets (if such a thing is really viable), mine the asteroids, and deflect a possible asteroid that is on a collision course.

UC Davis doctoral student Taylor Chapple notes,» [T] his estimate only represents a single point in time; further research will tell us if this number represents a healthy, viable population, or one critically in danger of collapse, or something in - between.»

And even in your more optimistic scenario (which I largely do share) only smaller population appears viable if its to be at a reasonable standard of living.

This principle recognises that the distinctiveness of minority or Indigenous cultures can only be protected to the same extent as the culture of a majority population if the law is able to protect the circumstances that make the continuance and development of the minority culture viable.