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. 2018 Aug 15;5(8):180453. doi: 10.1098/rsos.180453

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© 2018 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 5. — How juvenile survivorship and growth curves as a function of age together determine the shape of mass–abundance curves. Points are plotted each time unit. (a) Juvenile survivorship curves of the three types identified by Pearl [21], plotting the logarithm of the proportion of surviving individuals against age. Type 3 is here subdivided into Types 3a and 3b. (b) A Bertalanffy growth curve plotting the logarithm of juvenile body mass against age. (c) Survivorship and growth curves together determine the shape of mass–abundance curves, and these are identical in shape to fitness contours. Colour coding as in (a). The critical log-linear survivorship curve (Type 3a) is the one giving rise to a linear mass–abundance curve.