scholarly journals Effect of colony size and age on resource allocation between growth and reproduction in the corals Goniastrea aspera and Favites chinensis

2008 ◽  
Vol 354 ◽  
pp. 133-139 ◽  
Author(s):  
S Kai ◽  
K Sakai
Keyword(s):  
Resource Allocation ◽  
Colony Size ◽  
Goniastrea Aspera ◽  
Growth And Reproduction

scholarly journals A hierarchical Bayesian model to investigate trade-offs between growth and reproduction in a long-lived plant

2021 ◽  
Author(s):  
Valentin Journé ◽  
Julien Papaïx ◽  
Emily Walker ◽  
François Courbet ◽  
François Lefèvre ◽  
...  
Keyword(s):  
Resource Allocation ◽  
Late Stage ◽  
Bayesian Model ◽  
Low Density ◽  
Hierarchical Bayesian Model ◽  
Trade Off ◽  
Trade Offs ◽  
Individual Strategies ◽  
Density Population ◽  
Growth And Reproduction

1AbstractA trade-off between growth and fecundity, reflecting the inability of simultaneously investing in both functions when resources are limited, is a fundamental feature of life history theory. This particular trade-off is the result of evolutionary and environmental constrains shaping reproductive and growth traits, but it remains difficult to pinpoint in natural populations of long-lived plants. We developed a hierarchical Bayesian model to estimate the inter-individual correlation among growth and reproduction, using observations at individual level over several years combined with resource simulations from an ecophysiological-based model (CASTANEA). In the Bayesian model, the resource, simulated by CASTANEA and incorporated as a latent variable, is allocated to tree growth, reproductive buds initiation and fruit maturation. Then, we used individual random effects correlated among energetic sinks to investigate potential trade-offs. We applied this original approach to a Mediterranean coniferous tree, Atlas Cedar (Cedrus atlantica), at two contrasted levels of competition, high versus low density population. We found that trees initializing many reproductive buds had a higher growth. Moreover, a negative correlation was detected between growth and fruit survival during maturation. Finally, trees investing more resource to maturate fruits initiated less reproductive buds. The level of competition did not impact the sign of these three correlations, but changed the level of resource allocation: low density population favored growth whereas high density favored reproduction. The level of resource have an impact on individual strategies. This new modeling framework allowed us to detect various individual strategies of resource allocation to growth versus late-stage reproduction on the one hand, and to early-versus late-stage reproduction on the other hand. Moreover, the sign of the correlation between growth and reproductive traits depends on the stage of reproduction considered. Hence, we suggest that the investigation of potential trade-offs between growth and reproduction requires to integrate the dynamics of resource and sink’s phenology, from initiation to maturation of reproductive organs.

Folk-economic beliefs as moral intuitions

2018 ◽  
Vol 41 ◽  
Author(s):  
Neil Malhotra
Keyword(s):  
Resource Allocation ◽  
Moral Intuitions ◽  
Economic Beliefs ◽  
Evolutionary Explanations

AbstractAlthough Boyer & Petersen's (B&P's) cataloguing of and evolutionary explanations for folk-economic beliefs is important and valuable, the authors fail to connect their theories to existing explanations for why people do not think like economists. For instance, people often have moral intuitions akin to principles of fairness and justice that conflict with utilitarian approaches to resource allocation.

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