From d6936293aa085deb675ba7bcdcce3b923d459f03 Mon Sep 17 00:00:00 2001 From: gabrieldansereau Date: Mon, 31 Aug 2020 16:16:45 -0400 Subject: [PATCH] fix a few typos --- article/content.tex | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/article/content.tex b/article/content.tex index 866cedb..6c1371a 100644 --- a/article/content.tex +++ b/article/content.tex @@ -16,7 +16,7 @@ \section{Introduction} described as chaos rather than stable equilibrium. The simplest definition of chaos is the extreme sensitivity of a system to its initial conditions \citep{hastings1993}. -\citet{hastings1991}, who studied chaos in a continuous time model of a food web including +\citet{hastings1991}, who studied chaos in a continuous-time model of a food web including three species, contributed considerably to the significance and understanding of this subject. This study led to many others on food webs dynamics and chaos, which reinforced the importance of chaos in ecological modelling \citep{blasius1999, gakkhar2012}. @@ -118,8 +118,8 @@ \section{Methods} run for 10 000 time steps. We then represented the system's behaviour by plotting the species nondimensional variables against time (between time steps 5000 and 6500, which eliminates transient -behaviour), as well as a three dimensional phase plot of the three species (for all time -steps). Note that in the case of the three dimensional phase plot, we had to set RK4 as +behaviour), as well as a three-dimensional phase plot of the three species (for all time +steps). Note that in the case of the three-dimensional phase plot, we had to set RK4 as the solving algorithm, as well as a relative tolerance of $1e-14$; otherwise, the representation was unexpectedly different from the original paper. This suggests that the results for this figure in the original article may have been an @@ -153,7 +153,7 @@ \section{Methods} values, which identified local maxima only; and 3) we only kept values that were greater than a given threshold of the cycle's maximal amplitude, in order to remove secondary local maxima. -We determined by trial and errors that the best threshold was 66\%, as it best removed +We determined by trial and error that the best threshold was 66\%, as it best removed values in apparent second branches of $b_1$ while keeping the values in the primary branch. We note however that for some values of $b_1$, the true solutions of the system were unstable and that the system did not reach a cycling behaviour within 10 000 steps. @@ -298,7 +298,7 @@ \section{Discussion} likely for larger values of $b_2$". As \autoref{fig:figS1} shows, chaos can be quite likely for both smaller or larger values. We find important to note, however, that at a certain value of $b_2$, $z$ converges and -starts to crash, thus exhibiting non chaotic behaviour within a given range of $b_1$ +starts to crash, thus exhibiting non-chaotic behaviour within a given range of $b_1$ values. This crash is to be expected when looking at the original dimensional parameters, so it is possible that \citeauthor{hastings1991} simply chose not to reach this limit in their analyses, as they were only interested in biologically reasonable parameters likely to @@ -317,7 +317,7 @@ \section{Discussion} larger width of its "handle" (compare axis intervals of \autoref{fig:figS1} a,c). We have succeeded in replicating \citeauthor{hastings1991}'s model and its main findings, as our -results confirm chaos arising in a three species food chain in continuous time. +results confirm chaos arising in a three-species food chain in continuous time. In general, the model, including its equations and parameters, was well described by the authors. The most significant obstacles to reproducibility in \citeauthor{hastings1991}'s paper were the absence of the values of the initial conditions, which have a huge impact on a