Population Dynamics of Agave marmorata Roezl. under Two Contrasting Management Systems in Central Mexico
Por:
Jimenez-Valdes, M, Godinez-Alvarez, H, Caballero, J, Lira, R
Publicada:
1 jun 2010
Resumen:
Population Dynamics of Agave marmorata Roezl. under Two Contrasting Management Systems in Central Mexico. This paper evaluates the impacts of traditional management on the population dynamics of Agave marmorata, a multipurpose, useful species that is dominant in the Zapotitlan Salinas Valley, Puebla, Mexico. During 2002-2003 and 2003-2004, we constructed matrix models for two populations-one unmanaged, the other subject to plant extraction and cutting of flowering stalks. We also conducted prospective (elasticity) and retrospective (life table response experiments) analyses. Overall, the unmanaged population had higher finite rates of increase (lambda) than the managed one. This variation in lambda was the result of a decrease in the individual growth and fecundity in the managed population. Survival and growth were the demographic processes with the highest contribution to lambda in the unmanaged population, while survival was the most important in the managed one. Our results suggest
Filiaciones:
Jimenez-Valdes, M:
Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, UBIPRO, Tlalnepantla 54090, Edo Mexico, Mexico
Godinez-Alvarez, H:
Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, UBIPRO, Tlalnepantla 54090, Edo Mexico, Mexico
Caballero, J:
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City 04510, DF, Mexico
Lira, R:
Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, UBIPRO, Tlalnepantla 54090, Edo Mexico, Mexico
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