Total numbers of salmon released (
salmon.released) and surviving
salmon.surviving) in 12 streams, 6 with brook trout
6 with brook trout
absent. The proportion of salmon surviving
proportion.surviving) is given for each stream.
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BrookTrout is a data frame with 12 observations on the following
BrookTrout2 is a different summary of the same
study and gives survival rates for chinook in different years.
a factor with levels
present indicating whether brook trout are absent or present in the stream
a numeric vector of the total number of salmon released
a numeric vector of the number of salmon surviving
a numeric vector of the proportion of salmon surviving
Levin, P.S., S. Achord, B.E. Fiest, and R.W. Zabel. 2002. Non-indigenous brook trout and the demise of Pacific salmon: a forgotten threat? Proceedings of the Royal Society of London, Series B, Biological Sciences 269: 1663-1670.
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