Leaf Vein Morphological Variation in Four Endangered Neotropical Magnolia Species along an Elevation Gradient in the Mexican Tropical Montane Cloud Forests
Por:
Rodriguez-Ramirez, Ernesto C., Garcia-Morales, Leccinum J., Alcantara-Ayala, Othon, Antonio Vázquez-García J., Luna-Vega, Isolda
Publicada:
1 dic 2021
Resumen:
Climatic variations influence the adaptive capacity of trees within
tropical montane cloud forests species. Phenology studies have dominated
current studies on tree species. Leaf vein morphology has been related
to specific climatic oscillations and varies within species along
altitudinal gradients. We tested that certain Neotropical broad leaf
Magnolia species might be more vulnerable to leaf vein adaptation to
moisture than others, as they would be more resilient to the hydric
deficit. We assessed that leaf vein trait variations (vein density,
primary vein size, vein length, and leaf base angle) among four Magnolia
species (Magnolia nuevoleonensis, M. alejandrae, M. rzedowskiana, and
Magnolia vovidesii) through the Mexican Tropical montane cloud forest
with different elevation gradient and specific climatic factors. The
temperature, precipitation, and potential evaporation differed
significantly among Magnolia species. We detected that M. rzedowskiana
and M. vovidesii with longer leaves at higher altitude sites are adapted
to higher humidity conditions, and that M. nuevoleonensis and M.
alejandrae inhabiting lower altitude sites are better adjusted to the
hydric deficit. Our results advance efforts to identify the Magnolia
species most vulnerable to climate change effects, which must focus
priorities for conservation of this ecosystem, particularly in the
Mexican tropical montane cloud forests.
Filiaciones:
Rodriguez-Ramirez, Ernesto C.:
Laboratorio de Dendrocronología, Universidad Continental, Urbanización San Antonio, Avenida San Carlos 1980, Junín, Huancayo, 12000, Peru
Garcia-Morales, Leccinum J.:
Laboratorio de Biogeografía y Sistemática, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Alcantara-Ayala, Othon:
Laboratorio de Biogeografía y Sistemática, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Antonio Vázquez-García J.:
Laboratorio de Ecosistemática, Instituto de Botánica, Departamento de Botánica y Zoología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, km 15.5 Carr. Guadalajara-Nogales, Camino Ing. Ramón Padilla Sánchez 2100, Nextipac, Zapopan, 45221, Mexico
Luna-Vega, Isolda:
Laboratorio de Biogeografía y Sistemática, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
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