Tree structure and composition in an altitude gradient of the Metzabok Protected Natural Area, Chiapas, Mexico
Por:
Sanchez Gutierrez, Facundo, Valdez Hernandez, Juan Ignacio, Hernandez de la Rosa, Patricia, Sanchez Escudero, Julio, Sol Sanchez, Angel, Castillejos Cruz, Carlos, Isaac Brindis-Santos, Alfredo
Publicada:
1 mar 2021
Categoría:
Agricultural and biological sciences (miscellaneous)
Resumen:
Introduction: The forests are home to more than half of the planet's
species, despite of their biodiversity, they are the ecosystems most
threatened mainly by anthropic activities, but their complexity in
relation to altitude has information gaps despite of the values it
represents. Objective: Describe the structure and diversity of trees on
an altitudinal gradient. Methods: In five altitudinal strata (EA) 21
sampling plots (UM) of 20 x 50 m were established: six in EA1, five in
EA2, four in EA3, three in EA4 and 5. The structure was characterized by
the categories diametric and height, and the importance value indexes
(IVI) and forestry (IVF). Diversity was analyzed with the Shannon-Wiener
(H') and Simpson (S) indices, while the floristic similarity with the
Sorensen coefficient (IS). Results: It was registered 209 tree species,
eight are listed in the Official Mexican Standard-059-Secretariat of the
Environment and Natural Resources-2010 (NOM-059-SEMARNAT-2019) as
vulnerable species. The species with the highest IVI and IVF were
Haematoxylum campechianum and Manilkara zapota in EA1; Rinorea
guatemalensis and Pouteria reticulata in EA2; M. zapota and Brosimum
alicastrum at EA3; Guatteria anomala and Pseudolmedia spuria in EA4; and
Terminalia amazonia and Pouteria durlandii at EA5. In the five EAs,
three ranges of height and six of diameter were identified, the largest
number of individuals was found in the first diametric range. Species
diversity was lower at higher altitudes. In EA 2 and 3 the greatest
similarity was presented (IS=58.7 %). Conclusion: The structure and
diversity of the tree species present greater changes in wider altitude
ranges, related to the environmental need of each species.
Filiaciones:
Sanchez Gutierrez, Facundo:
Univ Autonoma Chiapas, Fac Maya Estudios Agr, Carretera Catazaja Palenque Km 4, Catazaja 29980, Chiapas, Mexico
Colegio Postgrad, Campus Montecillo, Texcoco 56230, Estado De Mexic, Mexico
Valdez Hernandez, Juan Ignacio:
Colegio Postgrad, Campus Montecillo, Texcoco 56230, Estado De Mexic, Mexico
Hernandez de la Rosa, Patricia:
Colegio Postgrad, Campus Montecillo, Texcoco 56230, Estado De Mexic, Mexico
Sanchez Escudero, Julio:
Colegio Postgrad, Campus Montecillo, Texcoco 56230, Estado De Mexic, Mexico
Sol Sanchez, Angel:
Colegio Postgrad, Campus Tabasco,Perifer Carlos A Molina S-N,Km 3-5, Cardenas, Tabasco, Mexico
Castillejos Cruz, Carlos:
Univ Autonoma Mexico, Fac Estudios Super Zaragoza, Ave Guelatao 66 El Paraiso Iztapalapa, Mexico City, DF, Mexico
Isaac Brindis-Santos, Alfredo:
Univ Autonoma Chiapas, Fac Ciencias Agr, Campus 4, Huehuetan 30660, Chiapas, Mexico
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