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When m-selection?
Bergmans, M. (1983). When m-selection? Oecologia 58: 256-257. https://dx.doi.org/10.1007/BF00399226
In: Oecologia. Springer: Heidelberg; Berlin. ISSN 0029-8549; e-ISSN 1432-1939, more
Peer reviewed article  

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Keywords
    Population parameters
    Marine/Coastal; Brackish water; Fresh water

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  • Bergmans, M., more

Abstract
    Caswell and Hastings (1980) introduced an explicit model for the relative merits, in terms of growth rate lambda, of developmental shifts vs. fecundity increases. Some aspects of their model are clarified by concentrating on the (fitness >1) half-plane rather than on the (accelerated reproduction) half-plane. There is no strict equivalence between Caswell and Hastings' key parameter lambda/P and the dynamic behaviour of the population which is governed by lambda. Thus in some stationary/declining populations time shifts of reproduction (forward or backward, according to the value of lambda/P) are just as effective in promoting a high lambda as they are in growing populations; therefore selection for higher m, may, but need not, prevail in stationary/declining populations.

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