University of Minnesota

Ecology Fair University of Minnesota Monarch Lab

Abstracts from Woodbury Middle School 2011

Woodbury Middle School
1425 School Drive
Woodbury, MN 55107

Year: 2011
Teacher(s): David Rafferty

Arthropod population comparision in Norway Spruce (Picea abies) and Scot's Pine (Pinus sylvestris)

Lauren S, Sonia F, Chaya G, Jordan K, Alex R, Brad M, Jeadon P

We wanted to find our if there were differences in the populations of arthropods found in two evergreen trees, Norway Spruce (Picea abies) and Scot’s Pine (Pinus sylvestris). Both trees are not native to North America, and are evergreen conifers. The trees had similar environments and were similar in size. Pines and spruce however, have very different foliage and could provide significantly different habitat for arthropod populations. We collected 16 samples from each tree using the beat method. All samples were collected on October 6, 2011. Hypothesis Hn3 proved to be correct; there were major differences in the arthropod populations. Norway spruce had more than twice as many arthropods than did Scot’s Pine. The largest difference was found in the populations of small arachnids.

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