Plantas con estructuras de adhesión como estrategia ectozoocórica: Centro de conservación Santa Ana, San José, Costa Rica
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Fecha
2007
Autores
OLIVA BARBOZA, ROSSANA
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Editor
Universidad Nacional (Costa Rica)
Resumen
Algunas especies de plantas presentan estructuras vegetales especiales para la adhesión, encontradas en hojas, tallos, flores, semillas o frutos, las cuales pueden influenciar en la fisiología y ecología, es por esto que se han visto involucradas en varias investigaciones. Una de las funciones es la colaboración en el proceso de dispersión, principalmente en la dispersión zoocoría y antropocoría. El objetivo de este trabajo, pretende identificar especies de plantas con estructuras vegetales de adhesión, en el Centro de Conservación Santa Ana y sus mecanismos de adherencia, para elaborar una guía de identificación de dichas especies, ya que no se conoce hasta el momento cuales especies de plantas en este lugar, logran adherirse a agentes dispersores por medio de sus estructuras. Se escogieron al azar tres zonas de muestreo, diferentes como hábitat, las cuales se dividieron en transectos lineales, para en cada uno realizar desplazamientos, portando en la mano un soporte diferente (prenda de vestir o animal disecado) Se recolectaron en las tres zonas muestreadas, un total de 38 especies de plantas con estructuras adheribles y en la zona 1 “charral sin sombra”, se recolectó el mayor número de especies con dichas estructuras, siendo Achyranthes aspera, la única especie que logró recolectarse en las tres zonas. Las estructuras vegetales que se lograron adherir, se clasifican en: tricomas Suaves y delgados, espinas, gloquideos, setas o acículas, alas indumentadas y papilas, tubérculos o verrugas, todas se encontraron formado parte de la semilla, fruto o infrutescencia y en algunos casos se encontraron en varias partes de una misma planta.
Some plant species have special plant structures for adhesion, found in leaves, stems, flowers, seeds or fruits, which can influence physiology and ecology, which is why they have been involved in various investigations. One of the functions is collaboration in the dispersal process, mainly in zoocoric and anthropocoric dispersion. The objective of this work is to identify species of plants with vegetal structures of adhesion, in the Santa Ana Conservation Center and their adhesion mechanisms, to elaborate an identification guide of said species, since it is not known until now which species of plants in this place, manage to adhere to dispersing agents through their structures. Three sampling areas were chosen at random, different as habitat, which were divided into linear transects, to carry out displacements in each one, carrying in the hand a different support (garment or dissected animal) They were collected in the three sampled areas , a total of 38 species of plants with adherent structures and in zone 1 "charral without shade", the largest number of species with said structures was collected, being Achyranthes aspera, the only species that managed to collect in the three zones. The plant structures that were able to adhere are classified as: Soft and thin trichomes, spines, glochids, mushrooms or needles, clothed wings and papillae, tubers or warts, all were found to be part of the seed, fruit or infructescence and in some cases were found in various parts of the same plant.
Some plant species have special plant structures for adhesion, found in leaves, stems, flowers, seeds or fruits, which can influence physiology and ecology, which is why they have been involved in various investigations. One of the functions is collaboration in the dispersal process, mainly in zoocoric and anthropocoric dispersion. The objective of this work is to identify species of plants with vegetal structures of adhesion, in the Santa Ana Conservation Center and their adhesion mechanisms, to elaborate an identification guide of said species, since it is not known until now which species of plants in this place, manage to adhere to dispersing agents through their structures. Three sampling areas were chosen at random, different as habitat, which were divided into linear transects, to carry out displacements in each one, carrying in the hand a different support (garment or dissected animal) They were collected in the three sampled areas , a total of 38 species of plants with adherent structures and in zone 1 "charral without shade", the largest number of species with said structures was collected, being Achyranthes aspera, the only species that managed to collect in the three zones. The plant structures that were able to adhere are classified as: Soft and thin trichomes, spines, glochids, mushrooms or needles, clothed wings and papillae, tubers or warts, all were found to be part of the seed, fruit or infructescence and in some cases were found in various parts of the same plant.
Descripción
Oliva Barboza, R. (2007). Plantas con estructuras de adhesión como estrategia ectozoocórica: Centro de conservación Santa Ana, San José, Costa Rica. [Tesis de Licenciatura]. Universidad Nacional, Costa Rica.
Palabras clave
AREAS DE RESERVAS, CONSERVACION DE L0S RECURSOS NATURALES, SOTOBOSQUE, MUESTREO, PLANTAS, FLOORS, RESERVATION AREAS