TITLE

VEGETACION DE LA RESERVA DE LA BIOSFERA "LA MICHILIA", DURANGO, MEXICO

AUTHOR(S)
Gonzalez-Elizondo, Socorro; Gonzalez-Elizondo, Martha; Cortes-Ortiz, Armando
PUB. DATE
July 1993
SOURCE
Acta Botanica Mexicana;1993, Issue 22, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
21761038

 

Related Articles

  • FOREST COMMUNITIES OF THE NORTHERN WHITEFISH RANGE, ROCKY MOUNTAINS, MONTANA, U.S.A. Stachurska-Swankon, Alina; Spribille, Toby // Folia Geobotanica;Dec2002, Vol. 37 Issue 4, p509 

    The montane and subalpine forests of a mountain range in northwestern Montana were investigated using phytosociological and numerical methods. Twelve associations and two subassociations were identified, of which eight are described here for the first time. The forest vegetation of valleys and...

  • VEGETACIÓN Y FLORA DE LA REGIÓN DE NIZANDA, ISTMO DE TEHUANTEPEC, OAXACA, MÉXICO. Pérez-García, Eduardo A.; Meave, Jorge; Gallardo, Claudia // Acta Botanica Mexicana;2001, Issue 56, p19 

    In the Nizanda region, a botanically little known area located in the Isthmus of Tehuantepec, Juchitan District, Oaxaca (southern Mexico), the main plant communities were characterized, and a floristic inventory was prepared on the basis of our own collected material. Landscape heterogeneity in...

  • A phytosociological study of the vegetation of the Devrekani-Inebolu-Abana area (Kastamonu, Turkey). Yurdakulol, Ender; Demirörs, Mehmet; Yildiz, Atilla // Israel Journal of Plant Sciences;2002, Vol. 50 Issue 4, p293 

    The study area is located in the western part of the Euxine subprovince of the Euro-Siberian region in Turkey. The area is bounded by Devrekani in the south and Inebolu and Abana in the north. This study to assess the vegetation of the area was based on, and interpreted according to, the...

  • Vegetation dynamics and its relationship with climatic factors in the Changbai Mountain Natural Reserve. Hou, Guanglei; Zhang, Hongyan; Wang, Yeqiao // Journal of Mountain Science;Dec2011, Vol. 8 Issue 6, p865 

    This study examined the temporal variation of the Normalized Difference Vegetation Index (NDVI) and its relationship with climatic factors in the Changbai Mountain Natural Reserve (CMNR) during 2000-2009. The results showed as follows. The average NDVI values increased at a rate of 0.0024 year....

  • Multiple Effects of Changes in Arctic Snow Cover. Callaghan, Terry; Johansson, Margareta; Brown, Ross; Groisman, Pavel; Labba, Niklas; Radionov, Vladimir; Bradley, Raymond; Blangy, Sylvie; Bulygina, Olga; Christensen, Torben; Colman, Jonathan; Essery, Richard; Forbes, Bruce; Forchhammer, Mads; Golubev, Vladimir; Honrath, Richard; Juday, Glenn; Meshcherskaya, Anna; Phoenix, Gareth; Pomeroy, John // AMBIO - A Journal of the Human Environment;Dec2011, Vol. 40, p32 

    Snow cover plays a major role in the climate, hydrological and ecological systems of the Arctic and other regions through its influence on the surface energy balance (e.g. reflectivity), water balance (e.g. water storage and release), thermal regimes (e.g. insulation), vegetation and trace gas...

  • Simulated and Observed Preindustrial to Modern Vegetation and Climate Changes. Notaro, Michael; Zhengyu Liu; Gallimore, Robert; Vavrus, Stephen J.; Kutzbach, John E.; Prentice, I. Colin; Jacob, Robert L. // Journal of Climate;Sep2005, Vol. 18 Issue 17, p3650 

    Rising levels of carbon dioxide since the preindustrial era have likely contributed to an observed warming of the global surface, and observations show global greening and an expansion of boreal forests. This study reproduces observed climate and vegetation trends associated with rising CO2...

  • Downscaling Statistical Model Techniques for Climate Change Analysis Applied to the Amazon Region. Mendes, David; Marengo, José Antonio; Rodrigues, Sidney; Oliveira, Magaly // Advances in Artificial Neural Systems;2014, p1 

    The Amazon is an area covered predominantly by dense tropical rainforest with relatively small inclusions of several other types of vegetation. In the last decades, scientific research has suggested a strong link between the health of the Amazon and the integrity of the global climate: tropical...

  • Climate- and Human-Induced Woody Vegetation Changes in Botswana and Their Implications for Human Adaptation. Ringrose, S.; Chipanshi, A. C.; Matheson, W.; Chanda, R.; Motoma, L.; Magole, I.; Jellema, A. // Environmental Management;Jul2002, Vol. 30 Issue 1, p98 

    For purposes of suggesting adaptive and policy options regarding the sustained use of forestry resources in Botswana, an analysis of the whole countrywide satellite data (showing the mean present distribution of vegetation in terms of species abundance and over all density) and the projection of...

  • Gradient analysis, the next generation: towards more plant-relevant explanatory variables. Lookingbill, Todd R.; Urban, Dean L. // Canadian Journal of Forest Research;Jul2005, Vol. 35 Issue 7, p1744 

    The long history of gradient analysis is anchored in the observation that species turnover can be described along elevation gradients. This model is unsatisfying in that elevation is not directly relevant to plants and the ubiquitous "elevation gradient" is composed of multiple intertwined...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics