Sentences with phrase «affect population size»

«The addition of several billion people in Africa could lead to severe resource shortages, which in turn could affect population size through unexpected mortality, migration, or fertility effects.»

But the authors also point out that, «despite occurring at very high densities, the summed effects on prey populations appeared unlikely to affect population size for the majority of prey species.»

Not exact matches

It remains to be seen how the staggering population loss will affect Bing's plans to revitalize the Motor City by shrinking city finances and infrastructure in line with Detroit's new size.

«Things that affect large portions of the [employee] population really affect small - and medium - sized businesses more than large businesses,» says Al Berman, executive director of DRII, The Institute for Continuity Management, a New York City - based organization that certifies businesses in contingency planning.

The following image shows how population sizes affect this rate of allele fixation and as you can see, as the population gets smaller, the rate of allele fixation increases exponentially.

As well as recording population sizes, we discovered that although Diana monkeys change their behaviour in areas where poaching takes place, western red colobus monkeys have not developed an efficient antipoaching strategy and are particularly badly affected by poaching.

«Doubling the number of recruits coming into a population is almost always going to affect the adult population size quite substantially,» Russ says.

The mutation affected a regulatory system called «quorum sensing,» which allows bacteria to sense the size of their own population in the insect.

Population movement within Greater Montreal (from suburbs to city centre, city centre to suburbs, and between suburbs) impacts local population size, but the age structure in the central city does not seem to be affected.

The African elephant population is a quarter to a half the size it was in 1979, greatly affecting ecosystems and the tourism industry.

So for his final - year research project he went to the Institute to study population genetics — in particular, how parameters such as population and genome size may affect the evolution of populations — using computer models.

The techniques developed in this study will help scientists to reconstruct past changes in colony size and potentially predict how other penguin populations may be affected elsewhere.

«Does population size affect rates of violence?.»

The researchers also found that different levels of reciprocity and transitivity don't affect group size and number very much, and that increasing the population makes for a few big groups rather than lots of little ones.

Also, the Army's EIS «did not adequately document or characterize individual risk of exposure or infection, nor did it consider potential exposures to workers and others on the base itself or how the spread of a pathogen would be affected by population size and density,» according to a press release NAS issued about the study.

To further test the consequence of mating preference on the evolution of menopause, we modeled the effect of mutations having delayed age of onset, using stochastic, computer simulation of a population with constant size, without pre-existing diminished fertility in females, and involving mutations that affected fertility as well as mortality.

Thus, although the parameters in our model, such as age of onset, mutation rate, selection strength, and population size did affect the shift from mutation - selection balance (model AP) to relaxed selection (model YF), the shift consistently tended to produce a menopausal period.

When juvenile and adult life stages are decoupled, population size often has a weak affect on recruitment [4].

Conclusion Parental pre ‐ acclimation to acidification levels that are beyond the pH that is encountered by this population in its natural habitat (e.g. pHT 7.2) negatively affected larval size and development, potentially through reduced energy transfer.

Affecting sufficient numbers of Indigenous students: The effort made needs to be commensurate with the improvement goal and the size of the target population.

Viewed relative to population size, seasonal floods also caused significant displacement in sub-Saharan Africa, most notably in Niger, Chad, Sudan and South Sudan — countries with highly vulnerable populations who are also affected by conflict and drought.

The size distortion of each country reflects its contribution to the total global population affected by natural disasters between 1975 and 2004.

«Marine mammals of Hudson Bay may be facing emerging risks that affect their health and population size.

Our model shows how variation in future energy supplies may affect the size of the future global population, given the empirical relationship shown in Figure 1.

Superbugs, three - legged frogs, and media hysteria about trends in genital size in wide populations may not trigger that sense of «this could affect me!»

Nesting biology of sea turtles is strongly affected by temperature, both in timing and in the determination of the sex ratio of hatchlings (Hays et al., 2003), but implications for population size are unknown.

It's unfortunate that crime rates are affected by the size of the population, however, it's also inevitable because the more populated an area is, the more likely that crime will occur.