Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico

Background and Aims: The timberline occurs as an ecosystem harboring unique forest and grassland types comprising outstanding endemic species. These vegetation types, furthermore, are the centers of capturing, recharging and transporting water so that these are regarded as provider´s nodes of enviro...

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Những tác giả chính: Medina García, Consuelo, Gimenez de Azcarate, Joaquin, Velázquez Montes, Alejandro
Định dạng: Online
Ngôn ngữ:spa
Được phát hành: Instituto de Ecología, A.C. 2020
Truy cập trực tuyến:https://abm.ojs.inecol.mx/index.php/abm/article/view/1584
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author Medina García, Consuelo
Gimenez de Azcarate, Joaquin
Velázquez Montes, Alejandro
author_facet Medina García, Consuelo
Gimenez de Azcarate, Joaquin
Velázquez Montes, Alejandro
author_sort Medina García, Consuelo
collection ABM
description Background and Aims: The timberline occurs as an ecosystem harboring unique forest and grassland types comprising outstanding endemic species. These vegetation types, furthermore, are the centers of capturing, recharging and transporting water so that these are regarded as provider´s nodes of environmental services. This is even more significant in intertropical mountains since these harbor large genetic reservoirs. This is the case of the Pico del Tancítaro and surrounding volcanoes, a region between 2600 and 3800 m elevation, in Michoacán, Mexico. The present study aimed to define and characterize the floristic and phytocenotic diversity, as well as recognize distribution patterns of the plant associations along the elevational gradient. Methods: Thirty five inventories were carried out following the phytosociological approach. At each inventory, a list of species, their coverage, and physical and geographical attributes of the site were compiled. Field information was later verified in the laboratory to ensure species identification; “Flora del Bajío y regiones adyacentes” was preferably consulted. Data were further analyzed via multivariate techniques in order to define plant associations. Key results: The 35 inventories were considered as a basis to assemble the vegetation tables that support three plant associations: Gaultherio myrsinoidis-Pinetum hartwegii, Polysticho speciosissimae-Abietetum religiosae and Sibthorpio repentis-Abietetum religiosae; as well as other units of lower rank. For each one, issues, such as structure, composition, ecology, distribution and relationship with bioclimatic belts and other nearby associations were addressed. Conclusions: The floristic combinations of the associations reflect environmental variations that occur along the altitudinal gradient, including those caused by natural and/or anthropic disturbance. These associations permit a clear classification of the phytocenotic heterogeneity in the forest studied, and confirm its role of environmental service providers and biodiversity.
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spelling oai:oai.abm.ojs.inecol.mx:article-15842022-11-17T21:46:50Z Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico Las comunidades vegetales del bosque de coníferas altimontano en el macizo del Tancítaro (Michoacán, México) Medina García, Consuelo Gimenez de Azcarate, Joaquin Velázquez Montes, Alejandro asociaciones vegetales Faja Volcánica fitosociología pinar oyametal. phytosociology fir forest pine forest plant associations Volcanic Belt. Background and Aims: The timberline occurs as an ecosystem harboring unique forest and grassland types comprising outstanding endemic species. These vegetation types, furthermore, are the centers of capturing, recharging and transporting water so that these are regarded as provider´s nodes of environmental services. This is even more significant in intertropical mountains since these harbor large genetic reservoirs. This is the case of the Pico del Tancítaro and surrounding volcanoes, a region between 2600 and 3800 m elevation, in Michoacán, Mexico. The present study aimed to define and characterize the floristic and phytocenotic diversity, as well as recognize distribution patterns of the plant associations along the elevational gradient. Methods: Thirty five inventories were carried out following the phytosociological approach. At each inventory, a list of species, their coverage, and physical and geographical attributes of the site were compiled. Field information was later verified in the laboratory to ensure species identification; “Flora del Bajío y regiones adyacentes” was preferably consulted. Data were further analyzed via multivariate techniques in order to define plant associations. Key results: The 35 inventories were considered as a basis to assemble the vegetation tables that support three plant associations: Gaultherio myrsinoidis-Pinetum hartwegii, Polysticho speciosissimae-Abietetum religiosae and Sibthorpio repentis-Abietetum religiosae; as well as other units of lower rank. For each one, issues, such as structure, composition, ecology, distribution and relationship with bioclimatic belts and other nearby associations were addressed. Conclusions: The floristic combinations of the associations reflect environmental variations that occur along the altitudinal gradient, including those caused by natural and/or anthropic disturbance. These associations permit a clear classification of the phytocenotic heterogeneity in the forest studied, and confirm its role of environmental service providers and biodiversity. Antecedentes y Objetivos: El límite superior del bosque es un ecosistema que alberga comunidades herbáceas y forestales con singular presencia de endemismos y con una función relevante en la captación, recarga y transporte de agua, lo que los define como nodos de provisión de bienes y servicios ambientales. Lo anterior es de particular significado en las montañas intertropicales por ser las que resguardan un banco de germoplasma oriundo significativamente elevado. Ese es el caso del Pico del Tancítaro y volcanes circundantes, región de estudio comprendida entre 2600 y 3800 m de altitud en Michoacán, México. Este trabajo tuvo como objetivo central definir y caracterizar la diversidad florística y fitocenótica, así como las pautas de distribución de las asociaciones vegetales a lo largo del gradiente altitudinal. Métodos: Se realizaron 35 inventarios siguiendo la metodología fitosociológica; en ellos se registraron las especies, su cobertura y los atributos físico-geográficos del sitio muestreado. La información de campo fue corroborada en gabinete; para asegurar los aspectos de identificación florística se utilizó preferentemente la “Flora del Bajío y de regiones adyacentes”. Los datos fueron analizados utilizando técnicas de agrupamiento multivariadas para poder definir las asociaciones vegetales. Resultados clave: Los 35 inventarios se consideraron como base para armar las tablas de vegetación que soportan las siguientes asociaciones vegetales: Gaultherio myrsinoidis-Pinetum hartwegii, Polysticho speciosissimae-Abietetum religiosae y Sibthorpio repentis-Abietetum religiosae; así como otras de rango menor. Para cada asociación se abordaron cuestiones de estructura, composición, ecología, distribución y relación con los pisos bioclimáticos y con otras asociaciones próximas. Conclusiones: Las combinaciones florísticas propias de las asociaciones reflejan las variaciones ambientales que se suceden en el gradiente altitudinal, incluyendo las causadas por perturbación natural y/o antrópica. Dichas asociaciones permiten tipificar la heterogeneidad fitocenótica del bosque estudiado y su papel como proveedoras de servicios ambientales y de biodiversidad. Instituto de Ecología, A.C. 2020-01-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf application/epub+zip application/xml https://abm.ojs.inecol.mx/index.php/abm/article/view/1584 10.21829/abm127.2020.1584 Acta Botanica Mexicana; No. 127 (2020) Acta Botanica Mexicana; Núm. 127 (2020) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1584/3956 https://abm.ojs.inecol.mx/index.php/abm/article/view/1584/3957 https://abm.ojs.inecol.mx/index.php/abm/article/view/1584/1967 Derechos de autor 2019 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0
spellingShingle Medina García, Consuelo
Gimenez de Azcarate, Joaquin
Velázquez Montes, Alejandro
Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico
title Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico
title_full Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico
title_fullStr Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico
title_full_unstemmed Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico
title_short Plant communities of high mountain coniferous forest in the Tancítaro massif, Michoacán, Mexico
title_sort plant communities of high mountain coniferous forest in the tancítaro massif, michoacán, mexico
url https://abm.ojs.inecol.mx/index.php/abm/article/view/1584
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