Sentences with phrase «species populations»

Playing with species populations in this way can disrupt entire ecosystems with unknown consequences.

Every habitat has a carrying capacity or, more specifically, a maximum species population size that can be sustained in that habitat.

We estimate nearly half of threatened species populations on islands could disappear without conservation efforts.

A recently published study in the journal Pachyderm highlights the ongoing effort of accredited zoos to address challenges and improve the sustainability of endangered species populations in their care.

Thanks in large part to research collected by biologist Greg Smith (also a Green Reef Board Member), there is a record of species population in this area.

If we act to help native species populations, we can reduce the menace of invaders.

The law's goal is not to preserve tiny populations on the brink of extinction but to recover species populations that are resilient enough to survive the bad luck which is so often part of living on the planet.

He studies the potential impacts of climate change on species populations around the globe using simulation modeling, field observations, and experiments to help predict where species might be most vulnerable to climate change and how conservation organizations can mitigate negative impacts in their region.

Regarding observations of speciation within the fossil record, we now know we shouldn't expect to see Darwin's proposed gradualism given the relatively short time scales and the probability of capture within the fossil record (i.e. new species populations will be small and less likely to be reflected).

Maui Nui Venison, a sustainable operation based in Hawaii, harvests wild Axis Deer on the islands of Maui and Moloka'i to keep the invasive species populations under control, and through partners like Nicky USA, provides this truly wild protein to consumers.

Massachusetts has lost so many dairy farms with grassland meadow habitats that grassland bird species populations are crashing.

Climate is increasingly controlling synchronous ecosystem behavior in which species populations rise and fall together, according to the National Science Foundation - funded study published in the journal Global Change Biology.

«Many studies have shown that climate change is affecting the distribution of wild species populations.

«The potential of this tool to characterize single and multiple species populations in aquatic and terrestrial habitats appears to be unlimited.»

In most species the population grows for three years, then crashes to near - extinction in the fourth.

Hybrids can therefore act as a channel for genes to flow between the pure species populations, the team will report next month in The American Naturalist.

The genome - wide genetic diversity of this endangered species can now be evaluated and monitored, making feasible a new era in endangered species population management and providing a genomic toolkit that can assist recovery efforts.

As livestock numbers in northern India grow, some of the snow leopard's main prey species populations are shrinking fast.

The Maine Department of Inland Fisheries and Wildlife provided information on state species populations.

In both cases, the goal should be to make sure the sea retains plenty of «BOFFs,» an acronym used by marine conservationist Carl Safina and Jane Lubchenco, the former administrator of the National Oceanic and Atmospheric Administration, to describe the «big old fat females» that are huge egg producers and the cornerstone of healthy marine species populations.

The NWCC concluded that these impacts are relatively low and do not pose a threat to species populations [5].

Mr. Ausubel and his colleague Mark Stoeckle, a senior research associate at the Program for the Human Environment, have pioneered a method for learning about species populations in the oceans simply through the collection of a glass of water.

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

So our study shows that of these 18 islands, eradicating invasive species on only two would likely prevent extinction of three native species populations.

As conservationists work to recover endangered species populations, taking individuals that are maintained and protected under human care and reintroducing them into the wild, it becomes apparent that there is a great deal to learn about the science of species recovery.

As this resource becomes less permanent due to warming, wolverine populations may become physically and genetically isolated — leading to decline of the species

Changes can and do happen within a species population that do not cause a speciation.

If the oceans continue to grow more inhospitable, reefs around the world may start to look more like Easter Island's two - species population.

He derided rivals as «armchair taxonomists» and asserted that some of them had «never personally analyzed any species populations or studied species in nature.»

The study concluded that eDNA was an effective way to measure aquatic singles - species populations.

To determine the level of threat to a species, IUCN requests scientists to project what the species population numbers will be after three generations.

Claridge is getting better estimates of Australian endangered species populations, thanks to truffles.

Abstract To assess the role of human disturbances in species» extinction requires an understanding of the species population history before human impact.

To estimate the size of the species population, these citizen scientists visit 200 coastal sites over the course of three weeks where butterflies spend their winters.

There are fewer than 250 California condors left in the wild, but species populations are increasing thanks in part to captive breeding programs at American zoos.

Naturally occurring chemicals found in de-icing road salts can alter the sex ratios in nearby frog populations, a phenomenon that could reduce the size and viability of species populations, according to a new study by scientists at Yale and Rensselaer Polytechnic Institute.

Within the last 200 years, however, the species population has declined rapidly.

Explain the criteria used to determine whether a species population is threatened, endangered, or extinct.

They then use this model to predict how a decrease in one species population would impact the rest of the ecosystem over time.

During similar events around the country, observers are discovering that species populations are shifting and changing as a result of the rapid environmental changes of the 21st century.

A major threat to a species population isn't necessarily habitat loss but habitat fragmentation — the division of their home by roads and other human - made obstacles that are usually deadly.