This page contains examples of how to run dam passage performance standards models in the shadia package for R. This is a work in progress. It is in no way meant to be comprehensive or a record of simulations that have been conducted to date. The examples here are simply meant to get the user started. There are a near-infinite number of ways that these models can be run to suit specific situations.
If you have specific examples you would like to see, please suggest them using the issue tracker, or better yet, submit them as examples based on those provided here.
These examples are meant to provide a quick look at how to specify models without fish passage, or without dams. These two simple model specifications can be used to explore scope of impact or to establish baselines for comparison with other scenarios. In the absence of dam impacts, the user can explore population sensitivity to factors other than dams, such as various types fishery-related mortality and the numerous variables stored in the sens object of the output list for each of the river models when sensitivity = TRUE.
No Passage example using penobscotRiverModel(). These simulations are most useful for establishing assumed baseline condition in the absence of fish passage.
No Dams example using penobscotRiverModel(). These simulations are most useful for establishing assumed baseline condition in the absence of dams.
This section contains parallel simulation code, basic results summaries, and some plots for watershed-scale applications of the models using variable passage rates at dams (i.e., watershed = TRUE).
Variable passage with random sampling example using mohawkHudsonRiverModel(). These simulations are most useful when a wide range of un-coupled upstream and downstream passage efficiencies or upstream timing are being crossed for comparison. In a fisheries management context, they are most useful if treating passage standards as being fixed among dams or establishing baselines for passage needs relative to management objectives.
Fixed passage combinations example using mohawkHudsonRiverModel() and fixed combinations of passage values that are randomly sampled from a matrix or dataframe of paired passage values watershed = TRUE. These simulations are most useful when only a limited number of passage combinations are being considered. From the management perspective, these they are most useful for running a small number of scenarios to fine-tune over a small range of values identified through precedent, monitoring data, or exploratory runs such as those described in the previous example.
This section will eventually have examples of single-dam investigations.
This work is licensed under a Creative Commons 4.0 International License.