diff --git a/DESCRIPTION b/DESCRIPTION
index 2208f52..231f7fd 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -17,7 +17,8 @@ LazyData: true
 Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.2.3
 Imports:
-    motifcensus
+    motifcensus,
+    stars
 Suggests: 
     knitr,
     rmarkdown,
diff --git a/R/cumul.R b/R/cumul.R
index f254686..0d0d89b 100644
--- a/R/cumul.R
+++ b/R/cumul.R
@@ -7,7 +7,12 @@
 #' @export
 cumul <- function(dat) {
   library(stars)
-  do.call("c", dat) |>
-  stars::st_redimension() |>
-  stars::st_apply(c(1,2), sum, na.rm = TRUE)      
+  
+  # Combine if in list
+  if (class(dat) == "list") dat <- do.call("c", dat)
+
+  # Redimension and sum 
+  stars::st_redimension(dat) |>
+  stars::st_apply(c(1,2), sum, na.rm = TRUE) |>
+  setNames("Footprint")     
 }
diff --git a/R/data.R b/R/data.R
new file mode 100644
index 0000000..89f7abc
--- /dev/null
+++ b/R/data.R
@@ -0,0 +1,20 @@
+#' Trophic sensitivity
+#'
+#' A dataset containing the simplified values for trophic sensitivity as measured by Beauchesne et al. 2021 (DOI: 10.1111/ele.13841) and used by Beauchesne et al. 2020 for network-scale cumulative effects assessments
+#'
+#' @format ## `trophic_sensitivity`
+#' A data frame with 124 rows and 10 columns:
+#' \describe{
+#'   \item{Motif}{Name of motifs: apparent competition (ap); disconnected (di); exploitative competition (ex); omnivory (om); partially connected (pa); tri-trophic interaction (tt)}
+#'   \item{Species}{Position of species in motif (x,y,z)}
+#'   \item{px, py, pz}{Pathways of effects, whether species x, y or z are affected by disturbances}
+#'   \item{Sensitivity}{Trophic sensitivity scaled between 0 and 1}
+#'   \item{sensitivity_original}{Original value of trophic sensitivity}
+#'   \item{pathID}{Unique identifier of pathway of effect}
+#'   \item{speciesID}{Numeric ID for species position in motifs}
+#'   \item{motifID}{Numeric ID for motifs}
+#' }
+#' @source <https://github.com/david-beauchesne/FoodWeb-MultiStressors/blob/master/Data/vulnerability.RData>
+#' @source <https://onlinelibrary.wiley.com/doi/abs/10.1111/ele.13841>
+#' @source <https://semaphore.uqar.ca/id/eprint/1922/1/David_Beauchesne_decembre2020.pdf>
+"trophic_sensitivity"
\ No newline at end of file
diff --git a/data/TrophicSensitivity.RData b/data/TrophicSensitivity.RData
new file mode 100644
index 0000000..a232ce3
Binary files /dev/null and b/data/TrophicSensitivity.RData differ
diff --git a/man/direct_cea.Rd b/man/direct_cea.Rd
index ae719e0..a6035ed 100644
--- a/man/direct_cea.Rd
+++ b/man/direct_cea.Rd
@@ -11,7 +11,7 @@ direct_cea(drivers, vc, sensitivity)
 
 \item{vc}{list of stars or terra objects}
 
-\item{sensitivity}{matrix of \link{drivers x vc}}
+\item{sensitivity}{matrix of drivers x vc}
 }
 \description{
 Function to assess cumulative effects considering only direct effects, i.e. the Halpern et al. (2008) methodology
diff --git a/man/trophic_sensitivity.Rd b/man/trophic_sensitivity.Rd
new file mode 100644
index 0000000..3403d57
--- /dev/null
+++ b/man/trophic_sensitivity.Rd
@@ -0,0 +1,36 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/data.R
+\docType{data}
+\name{trophic_sensitivity}
+\alias{trophic_sensitivity}
+\title{Trophic sensitivity}
+\format{
+\subsection{\code{trophic_sensitivity}}{
+
+A data frame with 124 rows and 10 columns:
+\describe{
+\item{Motif}{Name of motifs: apparent competition (ap); disconnected (di); exploitative competition (ex); omnivory (om); partially connected (pa); tri-trophic interaction (tt)}
+\item{Species}{Position of species in motif (x,y,z)}
+\item{px, py, pz}{Pathways of effects, whether species x, y or z are affected by disturbances}
+\item{Sensitivity}{Trophic sensitivity scaled between 0 and 1}
+\item{sensitivity_original}{Original value of trophic sensitivity}
+\item{pathID}{Unique identifier of pathway of effect}
+\item{speciesID}{Numeric ID for species position in motifs}
+\item{motifID}{Numeric ID for motifs}
+}
+}
+}
+\source{
+\url{https://github.com/david-beauchesne/FoodWeb-MultiStressors/blob/master/Data/vulnerability.RData}
+
+\url{https://onlinelibrary.wiley.com/doi/abs/10.1111/ele.13841}
+
+\url{https://semaphore.uqar.ca/id/eprint/1922/1/David_Beauchesne_decembre2020.pdf}
+}
+\usage{
+trophic_sensitivity
+}
+\description{
+A dataset containing the simplified values for trophic sensitivity as measured by Beauchesne et al. 2021 (DOI: 10.1111/ele.13841) and used by Beauchesne et al. 2020 for network-scale cumulative effects assessments
+}
+\keyword{datasets}