make_postspawn: Post-spawning survival

In danStich/anadrofish: Anadromous Fish Population Responses to Habitat Changes

Post-spawning survival

Description

Function used to estimate post-spawn survival from proportion of repeat spawners by latitude (Leggett and Cascardden 1978, Bailey and Zydlewski 2013) and natural mortality by life-history region ("AMS") or by iteroparity and natural mortality ("ALE" and "BBH").

Usage

make_postspawn(
  river = river,
  species = c("AMS", "ALE", "BBH"),
  iteroparity = NULL,
  nM = NULL,
  custom_habitat = NULL
)

Arguments

river	River for which post-spawn survival rate should be returned. Required argument with no default value. Available rivers can be seen using get_rivers.
species	Species for which population dynamics will be simulated. Choices include American shad ("AMS"), alewife ("ALE"), and blueback herring ("BBH").
iteroparity	Optional argument for rate of iteroparity. Values from make_iteroparity can be passed directly to this function, or a numeric vector of length = 1.
nM	Instantaneous annual mortality. Values for natural mortality for life-history regions can be from mortality for "AMS", mortality_rh for "ALE" and "BBH", or a numeric vector of length = 1.
custom_habitat	A dataframe containing columns corresponding to the those in the output from custom_habitat_template. The default, NULL uses the default habitat data set for a given combination of species and river.

References

Bailey, M.M., and J. D. Zydlewski. 2013. To stock or not to stock? Assessing the restoration potential of a remnant American shad spawning run with hatchery supplementation. North American Journal of Fisheries Management 33:459–467.

Leggett, W., and J. E. Cascardden. 1978. Latitudinal Variation in Reproductive Characteristics of American Shad (Alosa sapidissima): Evidence for Population Specific Life History Strategies in Fish. Journal of the Fisheries Research Board of Canada 35:1469-1478.

Atlantic States Marine Fisheries Commission. 2024. River herring benchmark stock assessment and peer-review report. ASMFC, Arlington, VA. URL: https://asmfc.org/uploads/file/66f59e40RiverHerringAssessment_PeerReviewReport_2024.pdf

Examples

make_postspawn(river = "Susquehanna", species = "AMS")

danStich/anadrofish documentation built on Jan. 17, 2025, 9:46 a.m.