replacement of population

См. также в других словарях:

• Population decline — can refer to the decline in population of any organism, but this article refers to population decline in humans. It is a term usually used to describe any great reduction in a human population.[1] It can be used to refer to long term demographic… …   Wikipedia

• Population ageing — or population aging (see English spelling differences) occurs when the median age of a country or region rises. This happens because of rising life expectancy or declining birth rates. Excepting 18 countries termed demographic outliers by the… …   Wikipedia

• Population growth — is the change in population over time, and can be quantified as the change in the number of individuals in a population using per unit time for measurement. The term population growth can technically refer to any species, but almost always refers …   Wikipedia

• Population momentum — is an effect which causes population growth. This phenomenon refers to the percentage of the population that are in their child bearing years who have not yet had children, and thus are scheduled to eventually have children which add to the… …   Wikipedia

• replacement level — replacement level, the birth rate needed for a population to maintain itself: »The current rate of 1.84 children per woman is still below the “replacement level” of 2.1 children for American society (Science News) …   Useful english dictionary

• replacement yield — the amount of yield in weight that can be removed from a population of fish without leading to biomass increase or decline. Replacement yield is high when population productivity is high under proper exploitation and it is low when the population …   Dictionary of ichthyology

• POPULATION — THE JEWISH POPULATION Growth by Aliyah In 1882 the Jewish population of Ereẓ Israel numbered some 24,000, roughly 5% of the total, and about 0.3% of the world Jewish population. Since then there has been an almost continuous flow of aliyah, which …   Encyclopedia of Judaism

• Population mondiale — Carte des pays par population (2009) La population mondiale désigne le nombre d êtres humains vivant sur Terre à un instant donné. Elle est estimée à 7 milliards au 31 octobre 2011 selon les Nations unies[1], alors qu elle éta …   Wikipédia en Français

• replacement rate —   the fertility rate required to maintain a population at its current size. It is 2.1 children per woman to allow both mother and father to be replaced …   Geography glossary

• Sub-replacement fertility — is a total fertility rate (TFR) that (if sustained) leads to each new generation being less populous than the previous one in a given area. In developed countries sub replacement fertility is any rate below approximately 2.1 children born per… …   Wikipedia

• Knee cartilage replacement therapy — Articular cartilage, most notably that which is found in the knee joint, is generally characterized by very low friction, high wear resistance, and poor regenerative qualities. It is responsible for much of the compressive resistance and load… …   Wikipedia