Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach

In the past, significant positive slopes of logspecies-logarea lines were interpreted exclusively in the context of the equilibrium theory of island biogeography. A good fit to the regression model was given as evidence for equilibrium in species' richness. Here, I investigate whether or not a...

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Autor principal: Aizen, M.A.
Formato: JOUR
Materias:
island biogeography
species-area relationship
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03043800_v47_n3-4_p265_Aizen
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_03043800_v47_n3-4_p265_Aizen2023-10-03T15:20:03Z Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach Aizen, M.A. island biogeography species-area relationship In the past, significant positive slopes of logspecies-logarea lines were interpreted exclusively in the context of the equilibrium theory of island biogeography. A good fit to the regression model was given as evidence for equilibrium in species' richness. Here, I investigate whether or not a good fit to the linear version of the power function is frequently obtained in hypothetical nonequilibrium archipelagos with islands possessing species numbers below equilibrium. The proportions of positive significant logspecies-logarea regressions fitted to several archipelagos with randomly generated species' numbers are appreciably greater than zero (between ≈ 0.17 and 0.93) for a broad range of situations. When decreasing exponential and logistic colonization models were simulated, the probability of obtaining a significant positive slope approached one. The two models produce distinct predictions about the relationship between the slope of the logspecies-logarea line fitted to nonequilibrium archipelagos and the slope under equilibrium conditions. © 1989. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03043800_v47_n3-4_p265_Aizen
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic island biogeography
species-area relationship
spellingShingle island biogeography
species-area relationship
Aizen, M.A.
Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach
topic_facet island biogeography
species-area relationship
description In the past, significant positive slopes of logspecies-logarea lines were interpreted exclusively in the context of the equilibrium theory of island biogeography. A good fit to the regression model was given as evidence for equilibrium in species' richness. Here, I investigate whether or not a good fit to the linear version of the power function is frequently obtained in hypothetical nonequilibrium archipelagos with islands possessing species numbers below equilibrium. The proportions of positive significant logspecies-logarea regressions fitted to several archipelagos with randomly generated species' numbers are appreciably greater than zero (between ≈ 0.17 and 0.93) for a broad range of situations. When decreasing exponential and logistic colonization models were simulated, the probability of obtaining a significant positive slope approached one. The two models produce distinct predictions about the relationship between the slope of the logspecies-logarea line fitted to nonequilibrium archipelagos and the slope under equilibrium conditions. © 1989.
format JOUR
author Aizen, M.A.
author_facet Aizen, M.A.
author_sort Aizen, M.A.
title Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach
title_short Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach
title_full Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach
title_fullStr Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach
title_full_unstemmed Fit of logspecies-logarea regression lines to nonequilibrium archipelagos: A simulation approach
title_sort fit of logspecies-logarea regression lines to nonequilibrium archipelagos: a simulation approach
url http://hdl.handle.net/20.500.12110/paper_03043800_v47_n3-4_p265_Aizen
work_keys_str_mv AT aizenma fitoflogspecieslogarearegressionlinestononequilibriumarchipelagosasimulationapproach
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