You Are Sampling a Stream with a Net, Collecting 100

Multiple Choice

You are sampling a stream with a net, collecting 100 macroinvertebrates. You have been told the stream has high richness but low evenness. Which of the following collections would best represent the stream if what you were told is true (assume the different macroinvertebrate types noted are all the same species (e.g., 20 mayflies are all of the same species) ?

A) 80 caddisflies, 20 mayflies
B) 60 caddisflies, 20 mayflies, 10 stoneflies, 5 damselflies, 4 dobsonflies, 1 cranefly
C) 60 caddisflies, 8 mayflies, 8 stoneflies, 8 damselflies, 8 dobsonflies, 8 cranefly
D) 60 caddisflies, 37 mayflies, 1 damselflies, 1 dobsonflies, 1cranefly