Estudios ecológicos en la Cordillera Oriental colombiana III. - La vegetación de la cuenca del lago de Tota (Boyacá)
In the river basin of the Tota lake (Boyacá) there are two differents zones related to the geomorphology, soil and climate. In the noreast zone the ecological conditions allow that the vegetation shows a greater cover; in the norwest zone on the other hand these conditions are very drastic, the floristic composition of vegetation is poor and generally speaking the landscape is of "arid type". The distribution of vegetation in the river basin is caused by topographic variations (altitude, reIief) and by differences of climate (temperature and solar radiation). Around the lake, the soil-content of water and nutrients, the physiography and the wind-action in some cases determine of the arrangement of plants-associations. These units of vegetation (associations) are described following the Zurich-Montpellier school and the rules and recomendations of the Code of Phytosociological Nomenclature (BARKMAN et at.. 1976). Among these units are the: forest of Alnus acuminata subsp. acuminata which grow on moist and marsh places around the lake and the sparse scrub with Hypericum ruscoides and Plantago monticola ond dry places. In the "Páramo-región", the dense scrub with Brachyotum striqosum and Celamaqrostis effusa and the stemrosette communities with Espeletia lopezii were studied. The "life-form" spectrum (RAUNKIAER, en BRAUN-BLANQUET, 1979) and the leaf characters (size, consistency, indumentation ) for each association also are provided.
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales
1986
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| Online Access: | https://revistas.unal.edu.co/index.php/cal/article/view/35045 |
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