Download Package `MARSS`

10
harborSeal
• prairiechicken Peterson M. J. and Silvy N. J. (1996) Reproductive stages limiting productivity
of the endangered Attwater’s prairie chicken. Conservation Biology, 10, 1264-1276.
• wilddogs Ginsberg, J. R., Mace, G. M. and Albon, S. (1995). Local extinction in a small and
declining population: Wild Dogs in the Serengeti. Proc. R. Soc. Lond. B, 262, 221-228.
Examples
str(graywhales)
str(grouse)
str(isleRoyal)
str(prairiechicken)
str(wilddogs)
harborSeal
Harbor Seal Population Count Data (Log counts)
Description
Data sets used in MARSS vignettes in the MARSS-package. These are data sets based on
LOGGED count data from Oregon, Washington and California sites where harbor seals were censused while hauled out on land. "harborSeallnomiss" is an extrapolated data set where missing
values in the original dataset have been extrapolated so that the data set can be used to demonstrate
fitting population models with different underlying structures.
Usage
data(harborSeal)
data(harborSealnomiss)
data(harborSealWA)
Format
Matrix "harborSeal" contains columns "Years", "StraitJuanDeFuca", "SanJuanIslands", "EasternBays", "PugetSound", "HoodCanal", "CoastalEstuaries", "OlympicPeninsula", "CA.Mainland", "OR.NorthCoast",
"CA.ChannelIslands", and "OR.SouthCoast". Matrix "harborSealnomiss" contains columns "Years",
"StraitJuanDeFuca", "SanJuanIslands", "EasternBays", "PugetSound", "HoodCanal", "CoastalEstuaries", "OlympicPeninsula", "OR.NorthCoast", and "OR.SouthCoast". Matrix "harborSealWA"
contains columns "Years", "SJF", "SJI", "EBays", "PSnd", and "HC", representing the same five
sites as the first five columns of "harborSeal".
Details
Matrix "harborSealWA" contains the original 1978-1999 LOGGED count data for five inland WA
sites. Matrix "harborSealnomiss" contains 1975-2003 data for the same sites as well as four coastal
sites, where missing values have been replaced with extrapolated values. Matrix "harborSeal" contains the original 1975-2003 LOGGED data (with missing values) for the WA and OR sites as well
as a CA Mainland and CA ChannelIslands time series.