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sergio pisa

Address: Managua, Departamento de Managua, Nicaragua

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Papers by sergio pisa

Research paper thumbnail of High genetic diversity of some cosmopolitan mosses in the Mediterranean Sierra Nevada Mountains

Research paper thumbnail of New Data on the Moss Genus Hymenoloma (Bryophyta), with Special Reference to H. mulahaceni

Http Dx Doi Org 10 7872 Cryb V34 Iss1 2013 13, 2013

Research paper thumbnail of The cosmopolitan moss Bryum argenteum in Antarctica: recent colonisation or in situ survival?

Research paper thumbnail of How to define nativeness in vagile organisms: lessons from the cosmopolitan moss Bryum argenteum on the island of Tenerife (Canary Islands)

The distinction between native and introduced biotas presents unique challenges that culminate in... more The distinction between native and introduced biotas presents unique challenges that culminate in organisms with high long-distance dispersal capacities in a rapidly changing world. Bryophytes, in particular, exhibit large distribution ranges, and some species can truly be qualified as cosmopolitan. Cosmopolitan species, however, typically occur in disturbed environments, raising the question of their nativeness throughout their range. Here, we employ genetic data to address the question of the origin of the cosmopolitan, weedy moss Bryum argenteum on the island of Tenerife. The genetic diversity of B. argenteum on Tenerife was comparable to that found in continental areas due to recurrent colonisation events, erasing any signature of a bottleneck that would be expected in the case of a recent colonisation event. The molecular dating analyses indicated that the first colonisation of the island took place more than 100,000 years ago, i.e. well before the first human settlements. Furt...

Research paper thumbnail of Elevational Patterns of Genetic Variation in the Cosmopolitan Moss Bryum Argenteum (Bryaceae)

American Journal of Botany, 2013

Research paper thumbnail of High genetic diversity of some cosmopolitan mosses in the Mediterranean Sierra Nevada Mountains

Research paper thumbnail of New Data on the Moss Genus Hymenoloma (Bryophyta), with Special Reference to H. mulahaceni

Http Dx Doi Org 10 7872 Cryb V34 Iss1 2013 13, 2013

Research paper thumbnail of The cosmopolitan moss Bryum argenteum in Antarctica: recent colonisation or in situ survival?

Research paper thumbnail of How to define nativeness in vagile organisms: lessons from the cosmopolitan moss Bryum argenteum on the island of Tenerife (Canary Islands)

The distinction between native and introduced biotas presents unique challenges that culminate in... more The distinction between native and introduced biotas presents unique challenges that culminate in organisms with high long-distance dispersal capacities in a rapidly changing world. Bryophytes, in particular, exhibit large distribution ranges, and some species can truly be qualified as cosmopolitan. Cosmopolitan species, however, typically occur in disturbed environments, raising the question of their nativeness throughout their range. Here, we employ genetic data to address the question of the origin of the cosmopolitan, weedy moss Bryum argenteum on the island of Tenerife. The genetic diversity of B. argenteum on Tenerife was comparable to that found in continental areas due to recurrent colonisation events, erasing any signature of a bottleneck that would be expected in the case of a recent colonisation event. The molecular dating analyses indicated that the first colonisation of the island took place more than 100,000 years ago, i.e. well before the first human settlements. Furt...

Research paper thumbnail of Elevational Patterns of Genetic Variation in the Cosmopolitan Moss Bryum Argenteum (Bryaceae)

American Journal of Botany, 2013

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