Sentences with phrase «shown stable populations»

In fact, of the 36 species of birds in North America that weigh over 4 pounds, 24 of those have shown population increases, nine have shown stable populations and only one has shown a decline in the last 30 years.

Not exact matches

Employment statistics show that fewer residents are part of the work force in 2000, 40,866, as compared with 43,136 in 1990, during a period when the population remained relatively stable.

In the summer of 2015, Cox showed me several hives that bore the standard signs: healthy brood; good stores of pollen and nectar, or «bee food,» and little else; a few straggling workers, maybe 10 percent of the population he had last week; and a big queen, running around her now - empty castle like a mom, knowing that without her stable of workers she'll be unable to feed her babies.

Limited evidence shows that populations around the world have positive attitudes toward science and support public funding for scientific research, and these attitudes have been generally stable over time, the committee found.

For Immediate Release January 14, 2015 Contact: Scott Hoffman Black, Executive Director, Xerces Society; [phone], [email protected] Annual Count Shows that Number of Monarch Butterflies Overwintering in California may be Holding Steady Data released today show that monarch butterfly populations at overwintering sites in California may be remaining stable.

The researchers showed that transmissible microbes that promoted altruism in their hosts won the survival battle over microbes that did not — and when this happened, altruism became a stable trait in the host population.

In contrast, the stable HB1.F3.Lenti - H2IgG cell line showed a shift in green fluorescence intensity for the entire cell population, albeit at lower levels than with the transient expression methods.

These studies have covered more than a hundred thousand people across more than 30 countries and have shown that salt consumption is remarkably stable among populations over time.

On the other hand, plenty of these zip codes show relatively stable populations from 2000 to 2010 — and dramatically shifting demographics.

Last, we considered how stable local populations are, based on Census data showing the percentage of residents who have been in the same home for five years.

Although national dog populations often remain largely stable over long periods, individual breeds can show substantial, and often culturally driven, surges and decreases in popularity in sort periods (Herzog et al. 2004).

Stable isotope results show only very slight differences between ancient and modern whales, indicating the hypothesis of population substructure in the past around the area of the Olympic peninsula / Vancouver Island remains a possibility and warrants further investigation using larger sample sizes.

«Our study clearly showed that European migratory bird species with declining breeding populations in Europe in the last decades (1990 — 2000) responded the least to recent climate change as reflected by the temporal trend in spring migration phenology, or even delayed their timing of spring migration, whereas species with stable or increasing populations advanced migration.»

Dr Andrew Derocher, chairman of the IUCN Polar Bear Specialist Group, said Lomborg's book was based on outdated statistics because the group had published an updated report in 2006, which showed that of 19 populations five were declining, five were stable and two were increasing; and for the remaining six there was not enough data to judge.

But if Obama and others focus first on consumption subsidies the motives look less like fiscal responsibility and a stable climate, and more like a finger pointing exercise or negotiating tactic designed to show that the developing world has plenty of funds available to adapt to climate change and invest in clean energy, if only they would stop making energy affordable for their populations.

Figure 5 shows that the mortality rate for deaths related to drug misuse in the youngest and oldest age groups has remained relatively stable in 2015: 2.7 deaths per million population for those aged under 20 and 11.5 deaths per million in people aged 70 and over.

Effort Reward Imbalance (ERI), which has a structure more stable among the nurse population, has shown concurrent validity in terms of intent to leave the nursing profession.