est_abundance_fpr: Fish per Redd Expansion

In ryankinzer/cuyem: Snake River Basin Anadromous Fish Summaries and Metric Estimation

Fish per Redd Expansion

Description

Calculates fish per redd expansion estimate for fish upstream of a monitoring site. The function then uses the expansion to create an estimate of the same type of fish downstream of the monitoring site. Depending on the group of fish in the expansion calculation, the resulting downstream estimate may not include all groups of fish downstream of the site. To include all groups of fish, set x and n parameters to calculate the proportion of the initial group downstream, and then expand the downstream estimate by the proportion.

Usage

est_abundance_fpr(R, N, SE_N, R_D = NULL, x = NULL, n = NULL, alpha = 0.05)

Arguments

R	redds upstream associated with the estimate of fish, or fish located in
N	total abundance of the fish group in similar spatial locations as redds
SE_N	standard error of abundance estimate
R_D	redds downstream
x	number of fish downstream that were in the same group as N
n	total number of fish downstream that need to be expanded
alpha	type I error rate. Default is set at 0.05 to produce 95% confidence intervals

Author(s)

Ryan N. Kinzer

Examples

est_abundance_fpr(100, 200, 5, alpha = .05)

ryankinzer/cuyem documentation built on April 20, 2024, 2:10 p.m.