SummaryWBPHS: Summarize the flight information for an observer on the WBPHS

In USFWS/AKaerial: Analysis of Alaska Region Aerial Survey Data

Summarize the flight information for an observer on the WBPHS

Description

SummaryWBPHS will summarize the flight and sampled area of a pilot or observer and give both the original and renumbered transect for reference

Usage

SummaryWBPHS(full.data, strip.width = 0.25)

Arguments

full.data	A clean (greenlight) file of observations by stratum, transect, and segment
strip.width	The sampled strip width in miles

Details

This function takes an observation file and uses it to imply the sampled area for each observer. Segment, transect, and strata records are pulled from the observations and compared to a table of known values for lengths and sizes. Segments in all strata except stratum 7 and stratum 12 are 16 miles long. Segments in stratum 7 are 8 miles long and segments in stratum 12 are 18 miles long. Total lengths for the augmented transects 12-19 in modified stratum 9 (see Cut9) are:

• 12: 22 mi

• 13: 20.763 mi

• 14: 21.32 mi

• 15: 12 mi

• 16: 14.543 mi

• 17: 8.395 mi

• 18: 7.663 mi

• 19: 8.372 mi

Default strip width is 0.25 mi for 2 observers, each viewing 0.125 mi.

Value

Data frame containing strata, transect, and segment information by observer

Author(s)

Charles Frost, [e-mail]

References

https://github.com/USFWS/AKaerial

USFWS/AKaerial documentation built on April 3, 2025, 4:06 p.m.