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No. de sistema: 000013999

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008 _ _ 160802m20169999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
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245 0 0 a| Circular distribution of three species of epiphytic orchids in shade coffee plantations, in Soconusco, Chiapas, Mexico
506 _ _ a| Acceso electrónico sólo para usuarios de ECOSUR
520 1 _ a| Background and aims – Cardinal orientation of individuals is one of the least known and understood ecological or demographic factor governing the dynamics of epiphytic orchid populations. The circular distribution of three epiphytic orchids, Oncidium poikilostalix, Oncidium guatemalenoides and Lepanthes acuminata, was studied in shaded coffee plantations in the region of Soconusco, Chiapas, Mexico. A preference for a certain cardinal orientation on the phorophytes was analyzed, using circular statistics. Methods – Circular distribution tendencies were compared between the three species, two life stages (immatures and adults), and between the microsites (trunk, branch forks, branches, twigs) in which the individual orchids were distributed on the phorophytes. Results – Oncidium poikilostalix was the most abundant species (1,056 individuals). The three orchid species were found growing mainly on twigs of the coffee bushes. For populations in general, and for the life stages and microsites in particular, individuals of O. poikilostalix and O. guatemalenoides showed a preference for occupying the combination of the cardinal orientations south-southwest-west. Individuals of L. acuminata were orientated towards all eight cardinal points, with a slight numerical preference for east. Conclusions – Cardinal orientation of orchid species can be driven by specific climatic or ecological factors (e.g. direction and speed of prevailing winds; O. poikilostalix and O. guatemalenoides). These species may show clearer preferences for growing facing certain cardinal orientations. However, many species can be affected by a combination of microclimatic and ecological factors (e.g. humidity in the microenvironments, proximity to water sources, insolation, shade, competition or wind speed and direction; L. acuminata), which may influence at such a limited and local scale that orientation patterns may be difficult to detect.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Epífitas
650 _ 4 a| Oncidium poikilostalix
650 _ 4 a| Oncidium guatemalenoides
650 _ 4 a| Lepanthes acuminata
650 _ 4 a| Dinámica de la población
650 _ 4 a| Cafetal
650 _ 4 a| Factores ambientales
651 _ 4 a| Benito Juárez Montecristo, Cacahoatán (Chiapas, México)
651 _ 4 a| Benito Juárez El Plan, Cacahoatán (Chiapas, México)
700 1 _ a| García González, Alfredo
n| 51763353200
700 1 _ a| Damon, Anne Asbhy
c| Dra.
e| coaut.
n| 7004272344
700 1 _ a| Riverón Giró, Frander Brian
e| coaut.
n| 56028135200
700 1 _ a| Ávila Díaz, Irene
e| coaut.
773 0 _
t| Plant Ecology and Evolution
g| Vol. 149, no. 2 (July 2016), p. 189-198
x| 2032-3921
900 _ _ a| Solicítelo con su bibliotecario/a
902 _ _ a| GOG / MM
904 _ _ a| Agosto 2016
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
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*Solicítelo con su bibliotecario/a
Circular distribution of three species of epiphytic orchids in shade coffee plantations, in Soconusco, Chiapas, Mexico
García González, Alfredo (autor)
Damon, Anne Asbhy (autor)
Riverón Giró, Frander Brian (autor)
Ávila Díaz, Irene (autor)
Nota: Acceso electrónico sólo para usuarios de ECOSUR
Contenido en: Plant Ecology and Evolution. Vol. 149, no. 2 (July 2016), p. 189-198. ISSN: 2032-3921
No. de sistema: 13999
Tipo: Artículo
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Inglés

"Background and aims – Cardinal orientation of individuals is one of the least known and understood ecological or demographic factor governing the dynamics of epiphytic orchid populations. The circular distribution of three epiphytic orchids, Oncidium poikilostalix, Oncidium guatemalenoides and Lepanthes acuminata, was studied in shaded coffee plantations in the region of Soconusco, Chiapas, Mexico. A preference for a certain cardinal orientation on the phorophytes was analyzed, using circular statistics. Methods – Circular distribution tendencies were compared between the three species, two life stages (immatures and adults), and between the microsites (trunk, branch forks, branches, twigs) in which the individual orchids were distributed on the phorophytes. Results – Oncidium poikilostalix was the most abundant species (1,056 individuals). The three orchid species were found growing mainly on twigs of the coffee bushes. For populations in general, and for the life stages and microsites in particular, individuals of O. poikilostalix and O. guatemalenoides showed a preference for occupying the combination of the cardinal orientations south-southwest-west. Individuals of L. acuminata were orientated towards all eight cardinal points, with a slight numerical preference for east. Conclusions – Cardinal orientation of orchid species can be driven by specific climatic or ecological factors (e.g. direction and speed of prevailing winds; O. poikilostalix and O. guatemalenoides). These species may show clearer preferences for growing facing certain cardinal orientations. However, many species can be affected by a combination of microclimatic and ecological factors (e.g. humidity in the microenvironments, proximity to water sources, insolation, shade, competition or wind speed and direction; L. acuminata), which may influence at such a limited and local scale that orientation patterns may be difficult to detect."


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