X-Nico

2 unusual facts about disjunct distribution


Disjunct distribution

This kind of disjunct distribution of a species, such that it occurs in Iberia and in Ireland, without any intermediate localities, is usually called "Lusitanian" (named after the Roman Province Lusitania, corresponding to modern day Portugal).

Examples of animal species with a Lusitanian distribution are: the Kerry slug Geomalacus maculosus and the Pyrenean glass snail Semilimax pyrenaicus.


Brown-throated Parakeet

It is found widely in woodland, savanna and scrub in northern South America in Colombia, Venezuela, the Guianas, the ABC islands in the Netherlands Antilles, and northern Brazil (mainly the Rio Negro/Branco region) with a disjunct population in south-western Pará.

Cornus florida

Cornus florida (flowering dogwood) is a species of flowering plant in the family Cornaceae native to eastern North America, from southern Maine west to southern Ontario, Illinois, and eastern Kansas, and south to northern Florida and eastern Texas, with a disjunct population in Nuevo León and Veracruz in eastern Mexico.


see also

Prionium serratum

This species has a disjunct distribution along the southern and south-eastern seaboard from the Western Cape to KwaZulu-Natal on sandstone substrates, growing in dense mats in marshy areas, and in and along streams and rivers.

Ptilidium

Schuster (1984) proposed that the disjunct distribution of Ptilidium ciliare between the northern and southern hemispheres could be explained by migration of the Indian Plate from Gondwana.