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Taxon cycle

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The ecology and evolution of the Melanesian ants that originally inspired Wilson's hypothesis have since been shown to be consistent with the taxon cycle predictions using modern methods. Ricklefs & Bermingham (2002) estimated that taxon cycles take place over periods of 0.1-10 million years in
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Pepke, Michael Le; Irestedt, Martin; Fjeldså, Jon; Rahbek, Carsten; Jønsson, Knud Andreas (2019). "Reconciling supertramps, great speciators and relict species with the taxon cycle stages of a large island radiation (Aves: Campephagidae)".
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cycle theories. Taxon cycles have mainly been described in island settings (archipelagos), where the distributions and movements of species are readily recognized, but may also occur in continental biota.
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that have moved to habitats inland (and uphill) and where reduced dispersal ability and extinctions have fragmented the distribution to fewer and larger islands. These species may be
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islands. Pepke et al. (2019) used the difference in mean age of late- and early-stage species as a lower estimate (4.7 million years) of the tempo of taxon cycling in an
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with limited dispersal abilities and small range sizes. These species are evolutionary distinctive, as closely related species (and subspecies) have gone extinct.
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species in the "final" stage are restricted to island interiors (mountains) on a few, large islands. This stage includes sedentary high‐elevation
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between species, the taxon cycle concept was further developed to include well-defined temporal scales and combined with concepts from
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stage inhabiting small island, coastal or disturbed (marginal) habitat. Such species are hypothesized to include very good
509:"Revisiting the Ants of Melanesia and the Taxon Cycle: Historical and Human-Mediated Invasions of a Tropical Archipelago" 324:
Jønsson, Knud Andreas; Irestedt, Martin; Christidis, Les; Clegg, Sonya M.; Holt, Ben G.; Fjeldså, Jon (2014-02-22).
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shifts in the ecology and morphology of species. The taxon cycle concept was explicitly formulated by biologist
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Pedersen, Michael Pepke; Irestedt, Martin; Joseph, Leo; Rahbek, Carsten; Jønsson, Knud Andreas (April 2018).
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Wilson categorized species into evolutionary "stages", which today are commonly described in the outline by
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Species that are generally widespread across many islands, but where geographical expansion has slowed,
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Young, rapidly expanding, undifferentiated, widely and continuously distributed species in the initial
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Ricklefs, Robert E.; Bermingham, Eldredge (2002). "The concept of the taxon cycle in biogeography".
59:& Cox (1972). However, with the advent of molecular techniques to construct time-calibrated 80: 281:
Ricklefs, Robert E.; Cox, George W. (1972-03-01). "Taxon Cycles in the West Indian Avifauna".
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Wilson, Edward O. (1961). "The Nature of the Taxon Cycle in the Melanesian Ant Fauna".
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Wilson, Edward O. (1959). "Adaptive Shift and Dispersal in a Tropical Ant Fauna".
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Proceedings of the Royal Society B: Biological Sciences
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expansions and contractions over time associated with
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Index

biogeographical
range
adaptive
E. O. Wilson
habitats
ant
Melanesian
Ricklefs
phylogenetic relationships
ecological succession
speciation
colonization
dispersers
ephemeral
supertramps
population differentiation
subspecies
incipient species
great speciators
species complexes
species
niche specialists
relictual
endemic
specialists
Lesser Antilles
Indo-Pacific
bird family
doi
10.1086/282174

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