Students have created areas of concentration ranging from " 20th Century American Literature " and " Adaptive Physical Education for Vulnerable Populations ," to " World Politics and Social Change " and " Zoological Photography.

Populations of choughs are stable or increasing in areas where traditional pastoral or other low intensity agriculture persists, but are declining or have become locally extinct where intensive farming methods have been introduced, such as Brittany, England, south-west Portugal and mainland Scotland.

Populations are also affected by the conversion of wetlands and grassland to arable crops, depriving the duck of feeding and nesting areas.

Populations have disappeared from natural breeding areas such as the Macquarie Marshes in northwestern New South Wales.

Populations do not peak simultaneously in all areas, although a great deal of synchronicity occurs in northern latitudes.

Populations in areas where the waters freeze, such as southern Canada, the northern USA and eastern Europe, will migrate to more temperate climes.

Populations in areas where the waters freeze, such as southern Canada, and the northern USA, will migrate to more temperate climes.

Populations on the southern fringes of the breeding range in Europe are however declining with local extinction in some areas ( notably in parts of England and Germany ), mainly due to field drainage and agricultural intensification.

Populations in more northern areas have again reached a level where it can be regularly utilized by hunters, although not in the example provided.

Populations are recovering rapidly, though, in most areas whilst under the protection of the Convention for the Conservation of Antarctic Seals.

Populations of seals and sea lions both inhabit the coastal areas of Shakotan.

Populations in these areas reduced, many ‎ people, falling victims to the famines while the survivors moved to other areas for ‎ safety .‎

Why Published Populations For Major World Urban Areas Vary So Greatly " ( which is the basis for List of metropolitan areas by population ), can get confused about the usage of “ city proper .” On page 2, they give “ city proper ” an “ administrative definition .” On page 5, they imply that the administrative boundaries define the “ city proper .” Yet on page 14, they make “ city proper ” a smaller subset of the administrative areas of the cities of Tokyo, Mexico City and Chicago, and imply that “ city proper ” and “ administrative area ” can be different.

Populations tend to be scattered between suitable savannah or cropland habitats, avoiding forested areas.

Populations also extend for considerable distances inland in regions with enough moisture to support suitable woodlands.

* Zhenyuan Zhao, Juan Camilo Bohorquez, Alex Dixon, and Neil F. Johnson " Anomalously Slow Attrition Times for Asymmetric Populations with Internal Group Dynamics ",, Physical Review Letters 103, 148701 ( 2009 ), 2 October 2009

Populations of several parrot species were described mainly in the unscientific writings of early travelers, and subsequently scientifically described by several naturalists ( to have their names linked to the species that they were proposing ) mainly in the twentieth century, with no more evidence than the earlier observations and without specimens.

Populations of this species have declined in the 20th century and some island populations are endangered by hunting, accidental poisoning, and collision with power lines.

Populations in central Venezuela overlap and interbreed with the Scarlet Ibis.

Populations in temperate regions breed during the local spring, while tropical populations nest to coincide with the rainy season.

Populations of bull sharks are also found in several major rivers, with more than 500 bull sharks thought to be living in the Brisbane River.

In 1905, the city had a population of about 35, 000 ; of whom half were Greeks who were exchanged with Muslims living in Greece under the 1923 agreement for Exchange of Greek Orthodox and Muslim Populations between the two countries.

Populations in the northern part of the range migrate south and spend the non-breeding season ( winter ) in southern USA, Mexico and Central America as far south as Panama, with a smaller number spending the winter in the Greater Antilles.

Populations on the island of Reunion have also diversified within thirty years according to their food resources with visible variations in bill morphology.

Populations began to rise after 3500 BC, with further dips and rises occurring between 3000 and 2500 BC but varying in date between regions.

Populations at risk include patients with diabetes mellitus, chronic renal failure, chronic lung disease or patients with an immune deficiency of any kind.

Populations in southeast Europe tend to have on average longer cones with more pointed scales ; these are sometimes distinguished as Picea abies var.

Populations of the desert bighorn sheep declined drastically with European colonization of the American Southwest beginning in the 16th century.

Working with Boreal Partners in Flight, the Institute for Bird Populations ( IBP ), and Earthwatch, the U. S. Fish and Wildlife Service undertook comprehensive landbird studies at Mother Goose Lake from 1994 through to 2001.

In 1977, Tinsley, with Richard Larson of Yale, organised a conference on ' The Evolution of Galaxies and Stellar Populations '.

Populations differ in their phenotypic plasticity, which is the ability of an organism with a given genotype to change its phenotype in response to changes in its habitat, or to move to a different habitat.

:" Populations with a high proportion of growth.

Populations may include the homeless, minorities, Medicaid recipients, migrant / seasonal farmworkers, persons infected with HIV / AIDS, the underinsured, and the uninsured.

Vulnerable Populations: Supporting promising new ideas that address health and health care problems that intersect with social factors — housing, poverty and inadequate education — and affect society's most vulnerable people, including low-income children and their families, frail older adults, adults with disabilities, the homeless, those with HIV / AIDS, and those with severe mental illness.

Populations in Canada and the northern half of the US experience regular crashes following severe winters, but their high breeding productivity soon results in a return to higher numbers.

Populations of the endangered North Island kokako can be found in the high plateau country.

Populations of C. xanthosternos are restricted to the Atlantic forest of south-eastern Bahia, Brazil, due possibly to high degrees of interference from man.

Populations of several endangered or threatened species are found here, including Forest Elephants, Western Lowland Gorillas and a high density of Common Chimpanzees.

Populations and harvests increased rapidly after the mid-1970s and have been at record high numbers since the 1980s.

Viscous Populations: Secondly, even indiscriminate altruism may be favoured in so-called viscous populations, i. e. those characterized by low rates or short ranges of dispersal.

Populations that feed on cones without removing or twisting them will likely show a 1: 1 morph distribution no matter what the genetic basis may be: the fitness of each morph is inversely proportional to its frequency in the population.

Populations may become irruptive in poor or harsh winters, meaning that groups of up to a thousand birds may unpredictably move from northern Europe to the Baltic, the Netherlands, Britain and even as far as the southern Balkans.

Populations around the Gulf of Mexico may be relatively spot-free even in adulthood.

Populations may also be found in the Sea of Japan and the Sea of Okhotsk.

Populations may sometimes rise and fall rapidly, within a span of about five years.

Populations of the same species from different latitudes may also follow Allen's rule.

Populations on Guam may reproduce year round.

Populations of the rare groundcover, Linnaea borealis, may be too isolated from one another to produce viable seed.