A biogeographical evaluation of high-elevation myxomycete assemblages in the northern Neotropics
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Fecha
2011-08
Tipo
artículo original
Autores
Rojas Alvarado, Carlos Alonso
Stephenson, Steven L.
Valverde González, Randall
Estrada Torres, Arturo
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Resumen
This study represented an effort to apply some of the relatively well-known biogeographical
and macroecological models to the observed structure of myxomycete assemblages,
with emphasis on the northern Neotropical region. A series of 28 experimental plots
located in 14 study sites within five different countries was surveyed during two consecutive
years using a standard methodology that included both field collections and specimens
obtained from moist chamber cultures. Results showed that myxomycetes in
high-elevation areas of the northern Neotropics seem to have different levels of preference
for macro- and microenvironments, varying degrees of niche breadth and overlap,
and different patterns of species occurrence in comparable areas. In a similar manner,
species assemblages along a latitudinal gradient that extends from Mexico to Costa Rica
showed a decreasing level of similarity with an assemblage studied in the temperate
forests of the eastern United Stated and were clearly distinct from an assemblage in
Thailand.
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Palabras clave
Central America, Community ecology, Costa Rica, Guatemala, Mexico, Myxogastrids, USA, Thailand