geographical isolation


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geographical isolation

the effective isolation of a GENE POOL by geographical barriers. For example, oceanic islands are isolated because of the difficulty of the sea-crossing for many organisms. The evolution of new species takes place through the prevention or limitation of GENE FLOW and various isolating mechanisms may play a part in this, one of the most important being geographical isolation. Compare ECOLOGICAL ISOLATION. see SPECIATION.
References in periodicals archive ?
The project has been a real lifeline for many women in the rural areas where the geographical isolation coupled with domestic abuse makes them very isolated and at risk of harm.
In 2004, I was a stalwart supporter for a regional assembly, but unfortunately South of the Tyne voters put the block on it and it became an anti-Newcastle vote, because they thought they should be ruled by Newcastle which I would like to remind people is a proper regional capital because of our history and geographical isolation.
Half of all NPs work in primary health care (PHC), generally with patients and populations who are the most vulnerable, due to complex health needs, geographical isolation and/or socioeconomic deprivation.
Through social or geographical isolation, a lack of information or no access to specialists, many women do not carry their pregnancy to term, or see their newborn die before their first anniversary.
The railroad broke Galicia's geographical isolation.
Slowly throughout the decades, those social ties were lost, and the geographical isolation facilitated the creation of political divisions.
The combination of 24/7 working patterns, geographical isolation and financial problems, along with the traditional image of the strong, working farmer enjoying a healthy, outdoor life, makes tackling depression a key problem within the farming community.
In the 18th century, Britain's geographical isolation, as well as entwined traditions of commerce and individual liberty, clearly distinguished it from rivals on the turbulent continent.
In developing countries, there are a series of limitations and barriers toward screening programme such as geographical isolation, lack of education and financial restrictions, which prevent the women from performing breast cancer screening programmes.
Under the present regime, the vital link has been broken between club and a city which has an extraordinarily strong sense of identity and place, which partly comes from the geographical isolation of being bounded by the sea, the river, the Pennines and the moors of Northumberland.
Refugees have avoided the island because of its relative geographical isolation, which makes it difficult to travel on to other parts of Europe.
Refugees avoid the island because of its relative geographical isolation, which makes it difficult to travel on to other parts of Europe.

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