FSAdata (version 0.3.3)

SculpinALTER: Biological data for Slimy Sculpin from the Arctic LTER (AK).

Description

Biological data (length, weight, and age) for Slimy Sculpin (Cottus cognatus) sampled from Lake S-6 of the Arctic Long Term Ecological Research location.

Format

A data frame of 117 observations on the following 3 variables:

w

Weight (nearest 0.1 g) at capture

tl

Total length (nearest mm) at capture

age

Age (completed growing seasons from otoliths) at capture

Source

Was (does not appear to be available there now) from http://ecosystems.mbl.edu/ARC/lakes/fish/89hes6ag.html. It seems like it should still be available from the Arctic LTER site at http://ecosystems.mbl.edu/ARC/lakes/fish/index.shtml.

Topic(s)

• Length Frequency
• Weight-Length
• Growth
• von Bertalanffy
• Size Structure

Details

Slimy Sculpin were captured from Lake S-6 during the summers of 1988 and 1989. Sculpins were captured using canning jars with acetate funnels inserted in them (similar in design to some minnow traps). The sculpin traps were set by raft and placed on the bottom of the lake in a specific habitat (inshore, rocky, rock-mud interface, and mud bottom). (Roughly) every three days the traps were retrieved and the sculpins, if any, were removed. The ages of the fish were determined by counting the rings in their otoliths.

Examples

data(SculpinALTER)
str(SculpinALTER)
head(SculpinALTER)
op <- par(mfrow=c(2,2),pch=19)
hist(SculpinALTER$tl,main="")
hist(SculpinALTER$age,main="")
plot(w~tl,data=SculpinALTER)
plot(tl~age,data=SculpinALTER)
par(op)