Populations have also been growing just east of the Cascades in central Washington around the city of Yakima and the Tri-Cities area.

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 have also been artificially introduced in some parts of the world, most notably the Americas and Australasia, principally for hunting.

Populations of feral guinea pigs have been established and then eradicated.

Populations of the bird that have been on the decline since the late 19th century has started to stabilise.

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 in westernmost Scotland are genetically distinct from those in the rest of Scotland and northern Europe, but not sufficiently to have been distinguished as a separate botanical variety.

Populations that have a steady, substantial gene flow among them are likely to represent a monotypic species even when a fair degree of genetic variation is obvious.

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 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 have risen spectacularly over the last 50 years, due largely to increased protection from shooting on the wintering grounds.

Populations have dwelled in Chiang Rai since the 7th century and it became the center of the Lanna Thai Kingdom during the 13th century.

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

All seven sites are in modern-day Turkey and no longer have significant Christian populations because the majority of the Greek population had been deported under the Convention Concerning the Exchange of Greek and Turkish Populations signed by Greece and Turkey.

Populations of migratory birds in the area have steadily declined since the 1960s.

Populations have fluctuated widely.

Populations have seen significant increases since the protection programs began, but the species remains in serious danger.

Populations have also been documented in Thailand.

Populations have been hunted off the coast of Peru for use as food and shark bait.

Populations of rookery sites in California have increased during the past century.

Populations have declined seriously in the south and west of its range, but it remains locally common in northern New South Wales and southern Queensland.

Populations of the Western Gray Squirrel have not recovered from past reductions.

Populations of the Blue-headed Vireo have been steadily increasing since the 1970s and has therefore been classified as a " Least Concern " species in 2004.

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

Populations in northern towns ( excluding capital cities ) declined an average of 24 percent.

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

Populations have declined mostly due to overcollecting for food and the pet trade.

Populations in cold continental climates mostly have one clutch per year, forming species A, whereas those in warmer climates have two clutches per year, forming species B. European earwigs are most commonly found in temperate climates, since they were originally discovered in the Palearctic region, and are most active when the daily temperature has minimal fluctuation.

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

Populations expanded until the Little Ice Age and European arrival.

Populations increased so rapidly among both African-American migrants and new European immigrants that there were housing shortages in many major cities, and the newer groups competed for the oldest, most rundown housing.

Populations of the toad extend through seventeen European countries.

" Interdisciplinary and Linguistic Evidence for Palaeolithic Continuity of European, Uralic and Altaic Populations in Eurasia ".

Populations of many second-and third-world nations often prefer second-hand items for their relative availability and lower cost, as much of the used clothing from the US and European nations are exported to developing nations for resale.

Since 1997 the Bat Night is organised under the auspices of the Agreement on the Conservation of Populations of European Bats ( EUROBATS ).

Populations, mainly from the Aegean Islands, continued arriving to reside in Piraeus.

Populations of feral animals present good sources for studies of population dynamics, and especially of ecology and behavior ( ethology ) in a wild state of species known mainly in a domestic state.

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 of Sesarma reticulatum are increasing, possibly as a result of the degradation of the coastal food web in the region.

This is the result of the Convention Concerning the Exchange of Greek and Turkish Populations of 1923 and of the Treaty of Lausanne of 1924, when the old millet categories were used for the forced population exchanges ( reciprocal ethnic cleansing ) of the Greek Orthodox Christians from Turkey ( except from Istanbul, and the iles of Gokcheada and Bozcaada ) and Muslims from Greece ( except from Western Thrace ), as well as for the protection of the two remaining recognized minorities, the " Muslims of Western Thrace " ( Turks, Pomaks and Roms ) and the " Greek Orthodox of Istanbul ".

Populations in areas with high sheep and rabbit numbers may decline, as these animals compact the soil and reduce the available habitat for mice.

Populations of ancestral " peregrinoid " falcons living in marginal habitat at the fringe of the African-Middle Eastern desert belt either adapted ( and might have become isolated e. g. in the Persian Gulf region, which turned into semiarid habitat surrounded by vast deserts ), or left for better habitat, or became extinct.

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 in southeastern Australia are threatened by reduction in forest cover and other habitat alterations.

Populations are primarily declining due to habitat being lost to development, especially in coastal swamp thickets and woodland edges in the east and riparian habitats in migration and winter in the Southeastern United States and Mexico.