Relaciones espaciales entre dos cactáceas globulares y dos arbustos Mimosoides en un enclave semiárido tropical
Palabras clave:
Andes, cactáceas globulares, disposición espacial, facilitación, Melocactus, Mammillaria, zonas semiáridasResumen
Evaluamos la relación espacial entre dos cactáceas globulares (Mammillaria mammillaris (L) Karsten and Melocactus
schatzlii Till & Gruber) y dos arbustos mimosoideos (Acacia farnesiana (Willd.) L. and Prosopis julifora DC.) en dos hábitats
(“cardonal” versus “espinar”) de un enclave semiárido de Los Andes venezolanos. Nuestros resultados muestran que ambas
especies de cactáceas globulares crecen espacialmente asociadas a ambas especies de arbustos mimosoideos (principalmente en
al cardonal estudiado). Estos resultados sugieren que la regeneración natural de ambas cactáceas probablemente es favorecida
por la proximidad de estos arbustos (sensu síndrome “planta nodriza”). No obstante, la presencia de ambos cactus en espacios
abiertos apunta a que la necesidad de una planta nodriza para su reclutamiento puede ser altamente facultativa. Este es el primer
estudio que reporta asociaciones espaciales positivas entre cactáceas globulares y arbustos mimosoideos en los Andes del norte
de Sudamérica. Al confirmar que ambos arbustos mimosoideos pueden influir la disposición espacial de cactáceas de forma
globular, proporcionamos las bases para futuras investigaciones y presentamos información clave sobre el rol que juegan estos
arbustos como plantas nodriza en Los Andes tropicales.
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Derechos de autor 2008 Daniel M. Larrea-Alcázar, Johnny J. Murillo, Carmen J. Figueredo, Pascual J. Soriano (Autor/a)
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
