| Gunnels | R Documentation |
Are Gunnels Present at Shoreline?
Description
Presence/absence of gunnels (eels) at shoreline quadrats
Format
A data frame with 1592 observations on the following 10 variables.
Gunnel | 1= gunnel present in the quadrat or 0=gunnel absent |
Time | Minutes after midnight |
Fromlow | Time in minutes from low tide |
Slope | Slope (to nearest 10 degrees) perpendicular to waterline |
Rw | Percentage cover in quadrat of rockweed/algae/plants |
Amphiso | Density of crustacean food: 0=none to 4=high |
Subst | Substratum: 1=solid rock, 2=rocky cobbles, 3=mixed pebbles/sand, 4=fine sand, |
| 5=mud, 6=mixed mud/shell detritus, 7=cobbles on solid rock, 8=cobbles on mixed pebbles/sand, | |
| 9=cobbles on fine sand, 10=cobbles on mud, 11=cobbles on mixed mud/shell detritus, | |
| 12=cobbles on shell detritus, 13=shell detritus | |
Pool | Standing water deep? 1=yes or 2=no |
Water | Standing water in the quadrat? 1=yes or 2=no |
Cobble | Rocky cobbles? 1=yes or 2=no |
Details
This dataset comes from a study on the habitat preferences of a species of eel, called a gunnel. Biologist Jake Shorty sampled quadrats along a coastline and recorded whether or not the species was found in the quadrat.
Source
Thanks to Jake Shorty, Bowdoin biology student, for this dataset.