Proc. R. Soc. B 286, 20182206. (Published Online 16 January 2019). (doi:10.1098/rspb.2018.2206)
Purpose for correction:
A figure and table depicting a population model in the article ‘The demography of a resource specialist in the tropics: Cecropia trees and the fitness of three-toed sloths’ (doi.org/10.1098/rspb.2018.2206) had editing errors. Our original table 1 depicting the matrix model incorrectly represented a reproductive element for 2- to 3-year-old juveniles as non-zero (first row, third column in matrix) and added (rather than multiplied) fecundity (m) with adult survival (ϕ3+). Additionally, there was incorrect symbology presented in figure 4: we have corrected the reproductive element (m × ϕ3+); shown that fecundity (m) was divided by 2 (because the model was female based); and added a negative sign to the exponent. We have updated table 1 and figure 4 below to correctly illustrate the projection we conducted that match the results and conclusions presented in the article. Reference numbers are as in the original main text.
Table 1.
Matrix model used to estimate annual population growth rates for three-toed sloths in northeastern Costa Rica (m, fecundity; ϕ0–1, annual juvenile 0- to 1-year-old survival rate; ϕ1–2, annual juvenile 1- to 2-year-old survival rate; ϕ2–3, annual juvenile 2- to 3-year-old survival rate; ϕ3+, annual adult survival rate).
| 0 | 0 | 0 | m × ϕ3+ |
| ϕ0–1 | 0 | 0 | 0 |
| 0 | ϕ1–2 | 0 | 0 |
| 0 | 0 | ϕ2–3 | ϕ3+ |
Figure 4.
Influence of Cecropia obtusifolia density on the population growth rate (λ) of three-toed sloths (Bradypus variegatus). Density of C. obtusifolia (coloured dots) was based on previous estimates of C. obtusifolia in different habitat types (see the electronic supplementary material for details). Filled colours represent the range of expected population growth in different habitat types. Inset graph illustrates a four-stage life-history diagram including the relationship between C. obtusifolia density and adult survival and reproductive output (m, fecundity; 3+, adults; ϕ0–1, annual juvenile 0- to 1-year-old survival rate; ϕ1–2, annual juveniles 1- to 2-year-old survival rate; ϕ2–3, juveniles 2- to 3-year-old survival rate; ϕ3+, annual adult survival rate) used to derive the estimated population growth rate.