Fisheries bycatch is one of the top threats to marine mammals
+ worldwide. Data on bycatch and marine mammal abundance are required to
+ make management decisions, yet many marine mammal populations exist in
+ locations where these data are sparse. Population models offer a way
+ to explore the long-term impacts of different bycatch scenarios even
+ when data are sparse or absent. Our modeling tool,
+
This tool provides a way for managers and other stakeholders to
+ explore bycatch scenarios, based on simple information about marine
+ mammal life history and rough estimates of abundance and bycatch. The
+ tool consists of an R package
+ (
The population model is a simplified version of the model described
+ by Breiwick et al.
+ (
The full model description including equations is contained in the + “Model description” vignette and the “About the Model” tab of the + app.
+-
+
Exploring outcomes for bycatch rates in populations with + little or no information
+Calculating reference points like PBR to estimate maximum + allowable bycatch for marine mammal populations
+-
+
Permitting specific management actions regarding bycatch. We
+ refer users to Hammond et al.
+ (
Calculating PBR for marine mammal stocks that already have a + stock assessment. If reference points have already been + calculated for the stock, those should be used.
+Fitting population models to data (we direct readers to other
+ tools like
+
The authors would like to thank several pilot testers for reviewing
+ a beta version of the MMBIET Shiny app, and Christine Stawitz and Jay
+ Barlow for reviewing an earlier version of the
+
At the time of this submission, three papers have cited
+
Hammond, P. S., Francis, T. B., Heinemann, D., Long, K. J., Moore,
+ J. E., Punt, A. E., Reeves, R. R., Sepúlveda, M., Sigurðsson, G. M.,
+ Siple, M. C., Víkingsson, G., Wade, P. R., Williams, R., &
+ Zerbini, A. N. (2021). Estimating the Abundance of Marine Mammal
+ Populations. Frontiers in Marine Science, 8, 1316.
+
Moore, J. E., Heinemann, D., Francis, T. B., Hammond, P. S., Long,
+ K. J., Punt, A. E., Reeves, R. R., Sepúlveda, M., Sigurðsson, G. M.,
+ Siple, M. C., Víkingsson, G. A., Wade, P. R., Williams, R., &
+ Zerbini, A. N. (2021). Estimating Bycatch Mortality for Marine
+ Mammals: Concepts and Best Practices. Frontiers in Marine Science, 8,
+ 1793.
+
Wade, P. R., Long, K. J., Francis, T. B., Punt, A. E., Hammond, P.
+ S., Heinemann, D., Moore, J. E., Reeves, R. R., Sepúlveda, M.,
+ Sullaway, G., Sigurðsson, G. M., Siple, M. C., Víkingsson, G. A.,
+ Williams, R., & Zerbini, A. N. (2021). Best Practices for
+ Assessing and Managing Bycatch of Marine Mammals. Frontiers in Marine
+ Science, 8, 1566.
+
Support for this project is provided by the Ocean Modeling Forum + and the Lenfest Ocean Program. M. Siple was supported by the Ocean + Modeling Forum and a James S. McDonnell Postdoctoral Fellowship.
+