Sentences with phrase «species population surviving»

Once native to several countries around the North Sea — and now only one (sub) species population surviving — and critically endangered — in the Pyrenees.

Not exact matches

We know from the science of population genetics how many breeding pairs of a species are necessary in order to supply enough genetic diversity for a population to survive.

Evolution speaks of mutations in nature that occur that make one «version» of a species survive better in their environment in a given «population».

Most reduce complex ecological systems to a linear relationship between resource density and population growth — something that can be broadly applied to infer how much resource loss a species can survive.

The Neandertal species did not go extinct, because it was never a separate species; instead population pockets of Neandertals died out around 30,000 years ago, whereas other Neandertal populations survived through interbreeding with their modern human brothers and sisters, who live on to this day.

Dr Razgour said: «The framework we have developed can be used to identify the wildlife populations that are most under threat, and therefore help decide how to focus conservation efforts to help the species survive under future climate change.

«The goals of the study were to help re-establish populations of this threatened and declining species, and to understand better what critical resources on the landscape are associated with the ability of young tortoises to survive and thrive,» said Ron Swaisgood, Ph.D., director of Applied Animal Ecology at San Diego Zoo Global.

With the aim of studying the history and genetic diversity of the species, analysis was conducted on the genomes of another ten Iberian lynxes from Doñana and Sierra Morena, the only two surviving populations on the Iberian Peninsula, which have been isolated from each other for decades.

How two species form depends on whether the environment encourages their separation, whether the dividing populations are big enough to survive on their own, and other factors.

As a result, the benthos population became dominated by species that could survive with much lower oxygen levels throughout the 1960s.

Bradshaw and his colleagues recently surveyed studies of 212 vertebrates and found that the typical minimum viable population size required for a species to survive long - term is about 5,000 individuals.

These include how the fungus survives in places without amphibian populations and whether other species are spreading the fungus.

The first aerial assessment of the impact of Central African Republic's recent conflict on wildlife and other natural resources in the northern part of the country shows that wildlife populations have been depleted in large areas of their former range, yet there is hope as some populations of Kordofan giraffe, giant eland, buffalo, roan, and other key species that still survive in low numbers.

Depending on the particular route travelled by each ship, the researchers estimated the probability that a species survives the journey and establishes a population in subsequent ports of call.

Like individuals in a population, species also struggle amongst themselves to survive, and most become extinct over time.

The continent has suffered more than a quarter of all recent mammal extinctions, and many other native species survive only as small populations on one or more of the country's thousands of islands.

The team speculates that detrimental mutations have survived in humans and chimps because these species have had much smaller breeding populations than rodents throughout evolution.

«The Messenger» chronicles the struggle of songbirds worldwide to survive in turbulent environmental conditions brought about by humans as populations of hundreds of species have declined.

The species will survive, but with a much diminished population.

When conditions change, some individuals within a population of a single species have genetic differences that give them the ability to survive the changes and they pass these characteristics to the next generation.

With such a dire forecast, action will be required to bolster current populations of the species if it is to survive the threat that climate change poses.

Survival for such species will depend on whether or not viable population sizes will remain in areas where climate does not change unsuitably, and on the potential of surviving individuals to disperse from climatically unsuitable areas into regions with favorable climate.

The paleontological record and historical observations of species indicate that in the past species have survived climate change by their constituent populations moving to a climatically suitable area, or, if they can not move, by evolving adaptations to the new climate.