Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico
La Michilía biosphere reserve is located in the southeastern part of Durango state, in a zone of semidry temperate climate, embracing an area of about 70,000 ha, 7000 of which belong to Cerro Blanco, the nucleus zone. Its vegetation is representative of that of millions of hectares of the Mexican Si...
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| Format: | Online |
| Jezik: | spa |
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Instituto de Ecología, A.C.
1993
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| Online dostop: | https://abm.ojs.inecol.mx/index.php/abm/article/view/668 |
| _version_ | 1799771169914617856 |
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| author | González-Elizondo, Socorro González-Elizondo, Martha Cortes-Ortiz, Armando |
| author_facet | González-Elizondo, Socorro González-Elizondo, Martha Cortes-Ortiz, Armando |
| author_sort | González-Elizondo, Socorro |
| collection | ABM |
| description | La Michilía biosphere reserve is located in the southeastern part of Durango state, in a zone of semidry temperate climate, embracing an area of about 70,000 ha, 7000 of which belong to Cerro Blanco, the nucleus zone. Its vegetation is representative of that of millions of hectares of the Mexican Sierra Madre Occidental, especially of its eastern slopes at altitudes between 2000 and 3000 m. The plant communities were delimited and maped on scale 1:50,000. The altitudinal distribution of several associations is sketched on profiles of vegetation. The following major vegetation units were recognized: Quercus forest, Quercus - Pinus forest, Pinus forest, Pinus - Quercus forest, Pseudotsuga forest, Cupressus forest, Juniperus communities, grassland, Arctostaphylos pungens scrub, Quercus microphylla scrub, Acacia schaffneri scrub and aquatic and semiaquatic vegetation. Oak and oak-pine forests form the bulk of the vegetation, and are represented by diverse associations. The structure and floristic composition of the major associations are described. From a comparison of diversity indices and structural parameters for two size classes of woody elements an interpretation of the successional trends of these communities is attempted. Relationships between plant cover and the most important abiotic factors, i.e. climate, geology, soils and geomorphology, are commented. The altitudinal levels of vegetation are scanty uniform due to geomorphology but, in general terms, it is observed that pines are predominant above 2700 m of altitude. Between 2500 and 2700 m oak-pine forests are common, and between 2200 and 2600 m oak forests and grasslands prevail. This distributional pattern is modified by relief, and reversions of vegetational levels in ravines and mountain valleys are common. Further studies about the dynamics and regeneration of these forests and the relationships between vegetation, wild fauna and livestock are recommended, since in a great part of its distributional area this ecosystem is simultaneously exploited for cattle raising and forestry. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-668 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 1993 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-6682023-02-08T03:04:33Z Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico Vegetación de la reserva de la biosfera "La Michilía", Durango, México González-Elizondo, Socorro González-Elizondo, Martha Cortes-Ortiz, Armando cartography diversity, plant list diversity plant list vegetation cover cartografía cubierta vegetal diversidad lista de plantas La Michilía biosphere reserve is located in the southeastern part of Durango state, in a zone of semidry temperate climate, embracing an area of about 70,000 ha, 7000 of which belong to Cerro Blanco, the nucleus zone. Its vegetation is representative of that of millions of hectares of the Mexican Sierra Madre Occidental, especially of its eastern slopes at altitudes between 2000 and 3000 m. The plant communities were delimited and maped on scale 1:50,000. The altitudinal distribution of several associations is sketched on profiles of vegetation. The following major vegetation units were recognized: Quercus forest, Quercus - Pinus forest, Pinus forest, Pinus - Quercus forest, Pseudotsuga forest, Cupressus forest, Juniperus communities, grassland, Arctostaphylos pungens scrub, Quercus microphylla scrub, Acacia schaffneri scrub and aquatic and semiaquatic vegetation. Oak and oak-pine forests form the bulk of the vegetation, and are represented by diverse associations. The structure and floristic composition of the major associations are described. From a comparison of diversity indices and structural parameters for two size classes of woody elements an interpretation of the successional trends of these communities is attempted. Relationships between plant cover and the most important abiotic factors, i.e. climate, geology, soils and geomorphology, are commented. The altitudinal levels of vegetation are scanty uniform due to geomorphology but, in general terms, it is observed that pines are predominant above 2700 m of altitude. Between 2500 and 2700 m oak-pine forests are common, and between 2200 and 2600 m oak forests and grasslands prevail. This distributional pattern is modified by relief, and reversions of vegetational levels in ravines and mountain valleys are common. Further studies about the dynamics and regeneration of these forests and the relationships between vegetation, wild fauna and livestock are recommended, since in a great part of its distributional area this ecosystem is simultaneously exploited for cattle raising and forestry. La reserva de la biosfera La Michilía se localiza al SE del estado de Durango, en una zona con clima templado semiseco. Cuenta con una superficie aproximada de 70,000 ha, de las cuales 7,000 corresponden a la zona núcleo, el Cerro Blanco. Su vegetación es representativa de la que se extiende a través de millones de hectáreas, especialmente en la vertiente oriental de la Sierra Madre Occidental de México, entre los 2000 y 3000 m de altitud. e llevó a cabo la delimitación y cartografía de las comunidades vegetales del área en un mapa a escala 1:50,000. La distribución altitudinal de diversas asociaciones se esquematiza mediante perfiles de vegetación. Fueron reconocidas las siguientes unidades generales: bosque de Quercus, bosque de Quercus - Pinus, bosque de Pinus, bosque de Pinus - Quercus, bosque de Pseudotsuga, bosque de Cupressus, comunidades de Juniperus, pastizal, matorral de Arctostaphylos pungens, matorral de Quercus microphylla, matorral de Acacia schaffneri y vegetación acuática y semiacuática. El grueso de la cubierta vegetal del área son los bosques de encino y los de encino-pino, representados por diversas combinaciones de especies. e describe la estructura y composición florística de las principales asociaciones, definiendo éstas de acuerdo con sus dominantes fisonómicos. Comparando los índices de diversidad y varios parámetros estructurales en dos clases de tamaño de los elementos leñosos de varias asociaciones se intenta interpretar sus tendencias sucesionales. Se comenta la relación entre la cubierta vegetal y los factores abióticos más importantes: clima, substrato geológico, suelos y topografía. La compleja geomorfología determina que los pisos altitudinales de vegetación sean poco uniformes, pero en términos generales se aprecia que los pinos predominan a partir de la cota altitudinal de 2700 m. Entre los 2500 y 2700 m son comunes los bosques de encino-pino y entre los 2200 y 2600 m prevalecen encinos y pastizales. Este patrón de distribución es modificado por el relieve y son comunes las inversiones de pisos de vegetación en cañadas y valles montañosos. e sugiere realizar estudios sobre dinámica y regeneración de este tipo de bosques y profundizar en el conocimiento de las relaciones entre vegetación, fauna silvestre y ganado, ya que en gran parte de su área de distribución este ecosistema es aprovechado simultaneamente para ganadería extensiva y explotación forestal. Instituto de Ecología, A.C. 1993-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/668 10.21829/abm22.1993.668 Acta Botanica Mexicana; No. 22 (1993); 1-104 Acta Botanica Mexicana; Núm. 22 (1993); 1-104 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/668/834 Derechos de autor 2016 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | González-Elizondo, Socorro González-Elizondo, Martha Cortes-Ortiz, Armando Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico |
| title | Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico |
| title_full | Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico |
| title_fullStr | Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico |
| title_full_unstemmed | Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico |
| title_short | Vegetation of the "La Michilía" biosphere reserve, Durango, Mexico |
| title_sort | vegetation of the "la michilía" biosphere reserve, durango, mexico |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/668 |
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