The Woodlynde School
Upper Gulph Road
Strafford, PA 19087
9th Grade Environmental Life Science
Mrs. Jacob
Identification Report from 9th Grade Environmental Science Class
Hypothesis:
We think that the same types of benthic organisms are found in ponds and streams that
share the same climate conditions. For example: Ponds and streams in a tropical biome
would have similar benthic organisms and ponds and streams in a temperate deciduous
forest would have similar benthic organisms.
Stream: Little Valley Creek, Chesterbrook, PA 19087
Biome: Temperate Deciduous Forest
Stream Temperature: 20 degrees Celsius
Data:
Benthic Organism
Number in Jars
Caddisfly Larva
39
Amphipod or Scud
82
Pyralid Catapillar
17
Dobsonfly or Fishfly Larva
8
Stonefly Nymph
4
Cranefly Larva
6
Mayfly Nymph
16
Blackfly Larva
1
Water Shrimp
28
Cyclops
10
Gammarus
6
Horsehoir Worm
1
Horsefly Larva
1
Midget Pupal
1
Alderfly
1
Midge Nymph
33
Daphnia
15
Total
269