A population model of Astrocaryum mexicanum and a sensitivity analysis of its finite rate of increase.
Por:
Pinero D., Martinez-Ramos M., Sarukhan J.
Publicada:
1 ene 1984
Resumen:
The demography of the palm Astrocaryum mexicanum is described from a tropical rain forest in Veracruz, Mexico. Yearly estimates of transition probabilities from one stage to the next are c0.10 individual ind-1yr-1 for most stages. This palm has a survivorship pattern with high mortalities (0.69-0.95 individual ind-1yr-1) during the first stages of the life cycle and almost no mortality (0-0.03) after its first reproduction. Individual fecundity shows an initial increase followed by constant values after the palms are c70 yr old. Estimates of the finite rate of increase (lambda) vary between 0.9932 and 1.0399. The average for all plots, 1.0046, predicts a doubling time for a population of c150 yr. A sensitivity analysis of lambda to various demographic parameters shows that fecundity and survival rates for older stages are 1-4 orders of magnitude less important in changing lambda than growth and survivorship estimates for intermediate stages.-from Authors
Filiaciones:
Pinero D.:
Dept de Ecologia, Inst de Biologia, Univ Nacional Autonoma de Mexico, Apartado 70-233, 04510 Mexico, D.F., Mexico., Mexico
Martinez-Ramos M.:
Dept de Ecologia, Inst de Biologia, Univ Nacional Autonoma de Mexico, Apartado 70-233, 04510 Mexico, D.F., Mexico., Mexico
Sarukhan J.:
Dept de Ecologia, Inst de Biologia, Univ Nacional Autonoma de Mexico, Apartado 70-233, 04510 Mexico, D.F., Mexico., Mexico
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