Sure. I probably would preface that by saying a lot of the work I've done has been to look at things like water temperature and how something like that, even in one species, such as Atlantic salmon, could influence survival or mortality.
Really, what you see if you look at this literature is this. If conditions are appropriate for the fish—water temperature is reasonable and the angling practices are reasonable—I can say without exception that virtually every study shows that survival is over 90%. Then when you're talking about mortality, you're talking about usually less than 5% as a hooking mortality in fish species.
Maybe some exceptions to that would be when we get into situations with very high water temperatures, things like that which are actually unnatural for fish these days. In some of these cases the mortality is higher. But I think in a lot of the situations, such as the Atlantic salmon fishery, anglers and managers have recognized that they have to close the fishery in some cases now when the temperatures get that high.