Includes count and size data for cutthroat trout and salamanders in clear cut or old growth sections of Mack Creek, Andrews Forest LTER.

and_vertebrates

Format

A tibble with 32,209 rows and 6 variables:

year

a number indicating the observation year

sitecode

a character denoting the coded name of sample area

section

a character denoting the section in Mack Creek (CC = clear cut forest, OG = upstream old growth coniferous forest)

reach

a character denoting the reach sampled from each section; L = lower reach (0 - 50 meters), M = middle reach (50 - 100 meters), U = upper reach (100 - 150 meters))

pass

a number denoting the electroshocking pass number, either 1 or 2

unitnum

a number denoting the channel unit number

unittype

a character denoting the channel unit classification type (C = cascade, I = riffle, IP = isolated pool (not connected to channel), P = pool, R = rapid, S = step (small falls), SC = side channel, NA = not sampled by unit)

vert_index

a number denoting the unique index for each vertebrate

pitnumber

a number denoting the unique tag number embedded into vertebrate (tagging started in 2007)

species

a character denoting species measured

length_1_mm

a number denoting vertebrate length in millimeters; total or snout-fork length for trout, and snout-vent length for salamanders

length_2_mm

a number denoting snout-tail length in millimeters (for Coastal giant salamander only)

weight_g

a number denoting vertebrate mass in grams

clip

a character denoting the fin clip type for cutthroat trout, ended in 2006 (LV = left ventrical fin; LVRV = left and right ventrical fins; RV = right ventrical fin; NONE = no ventral fin clip)

sampledate

a date denoting the date of observation

notes

a character denoting additional comments

Source

Gregory, S.V. and I. Arismendi. 2020. Aquatic Vertebrate Population Study in Mack Creek, Andrews Experimental Forest, 1987 to present ver 14. Environmental Data Initiative. https://doi.org/10.6073/pasta/7c78d662e847cdbe33584add8f809165