An annual cycle of biomass and productivity of Vallisneria americana in a subtropical spring-fed estuary An annual cycle of biomass and productivity of wild celery ( Vallisneria americana) was studied in Kings Bay, FL, USA. In situ growth rates were measured m... J Hauxwell,TK Frazer,CW Os...
Animal bait catches (see Chap. 6) usually catch only unfed females in search of a blood-meal and the choice of bait species will in many cases determine the species of mosquito sampled. Attractant traps (Chap. 11) also predominantly sample host seeking females, and may often attract only c...
The data is based on place of birth, so some of the “Americans” in the data are of Mexican heritage – they were born in the USA, to parents who were born in Mexico, and have since relocated to Mexico. As the graph highlights, almost half of all Americans living in Mexico live ...
We investigate the relationship between the average number of lifetime sex partners and the prevalence of those with higher-risk behaviour by ethnic groups within five countries: Ethiopia, Kenya, South Africa, Uganda and the United States of America (USA). Higher-risk behaviour (HRB) is defined...
Examines the phenomenon of migration within the USA: 70% of the population are located on 1.5% of the nation's total land area. The trend is persistent, but it will not continue in the future, as can be predicted from careful examination of demographic data gathered over the last 25 years...
though it is often a function of the amount of time they spend in the country. Military personnel and their families living outside of the country may or may not be counted. (In the USA, they have been counted in some censuses and not in others.) This is different in concept from ear...
1Terra Group, Hershey, USA. 2Facultad Latinoamericana de Ciencias Sociales, Quito, Ecuador. ABSTRACT According to most recent research, Indians in Ecuador’s Amazonian region (the Oriente) lived outside of modern markets and political systems until around 40 years ago. But this view obscures the...
The age group composition of populations varies substantially across continents and within countries, and is linked to levels of development, health status and poverty. The subnational variability in the shape of the population pyramid as well as the res
Despite the progress in sampling many populations, human genomics research is still not fully reflective of the diversity found globally (Sirugo et al., 2019). Understudied populations limit our knowledge of genetic variation and population history, and their inclusion is needed to ensure that they...
The Effect of Family Size and Birth Order on Children's Education. CEE DP 50. There is an extensive theoretical literature that postulates a trade off between child quantity and quality within a family. However, there is little causa... SE Black,P Devereux,K Salvanes - Centre for the ...