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TABLE 4 |
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BENTHIC MACROINVERTEBRATE RESULTS |
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BRINTON RUN, 00044, AND 00052 |
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CHESTER COUNTY |
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April 21, 1999 |
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TAXA |
STATION |
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1BR |
44UT |
52UT |
R1 |
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Ephemeroptera (mayflies) |
|
|
|
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|
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Baetidae; Acentrella |
|
|
|
R |
|
|
|
Baetis |
|
|
P |
|
|
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Ephemerellidae; Ephemerella |
VA |
VA |
VA |
VA |
|
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Eurylophella |
|
R |
P |
|
|
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Drunella |
|
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|
VA |
|
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Serratella |
|
|
C |
P |
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Heptageniidae; Epeorus |
C |
|
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C |
|
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Stenonema |
P |
P |
C |
C |
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Leptophlebiidae; Habrophlebiodes |
|
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R |
|
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Ameletidae; Ameletus |
C |
|
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Plecoptera (stoneflies) |
|
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Chloroperlidae; Haploperla |
R |
|
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Leuctridae; Leuctra |
R |
|
|
R |
|
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Nemouridae; Amphinemoura |
A |
A |
VA |
P |
|
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Perlidae; Acroneuria |
A |
|
|
A |
|
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Paragnetina |
|
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P |
|
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Eccoptera |
R |
|
P |
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Perlesta |
|
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R |
|
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Perlodidae; Diploperla |
|
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C |
|
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Tricoptera (caddisflies) |
|
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Brachycentridae; Micrasema |
P |
|
|
P |
|
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Glossosomatidae; Agapetus |
R |
R |
|
P |
|
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Glossosoma |
P |
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P |
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Hydroptilidae; Leucotrichia |
|
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R |
|
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Hydropsychidae; Cheumatopsyche |
C |
A |
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Diplectrona |
A |
C |
VA |
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Hydropsyche |
C |
C |
C |
A |
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Lepidostomatidae; Lepidostoma |
|
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A |
P |
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Limnophilidae; Goera |
P |
|
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Pycnopsyche |
R |
|
P |
|
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Ironoquia |
|
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R |
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Philopotamidae; Chimarra |
R |
|
C |
P |
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Polycentropidae; Polycentropus |
R |
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Psychomiidae; Psychomyia |
R |
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P |
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Lype |
|
R |
R |
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Rhyacophilidae; Rhyacophila |
P |
|
P |
R |
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Uenoidae; Neophylax |
P |
A |
R |
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Diptera (true flies) |
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Blephariceridae; Blepharicera |
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A |
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Empididae; Clinocera |
C |
P |
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P |
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Chelifera |
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P |
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Psychodidae |
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P |
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Simuliidae; Simulium |
A |
P |
|
P |
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Prosimulium |
P |
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Tabanidae; Chrysops |
|
P |
R |
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Tipulidae; Antocha |
P |
R |
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C |
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Limnophila |
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R |
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Tipula |
C |
R |
P |
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Chironomidae |
A |
VA |
C |
A |
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Megaloptera |
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Corydalidae; Nigronia |
R |
R |
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R |
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Sialidae; Sialis |
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P |
R |
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Odonata (dragon-, damselflies) |
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Aeshnidae; Boyeria |
R |
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Gomphidae |
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P |
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Gomphus |
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R |
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Stylogomphus |
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R |
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Lepidoptera (moths) |
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Pyralidae; Petrophila |
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P |
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Coleoptera (aquatic beetles) |
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Dryopidae; Helichus |
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P |
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Elmidae; Dubiraphia |
|
R |
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Macronychus |
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P |
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Optioservus |
A |
A |
C |
P |
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Oulimnius |
P |
P |
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Promoresia |
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P |
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Stenelmis |
P |
C |
A |
R |
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Psephenidae; Ectopria |
R |
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Psephenus |
C |
P |
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C |
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Ptilodactylidae; Anchytarsus |
P |
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A |
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Non-Insect Taxa |
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Turbellaria (flat worms) |
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Cura |
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P |
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Hirudinea |
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R |
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Oligochaeta |
C |
P |
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Lumbricidae |
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P |
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Amphipoda (scuds) |
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Gammaridae; Gammarus |
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VA |
C |
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Isopoda (sow bugs) |
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Asellidae; Caecidotea |
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P |
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Decapoda (crayfish) |
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Cambaridae |
R |
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Gastropoda (univalves, snails) |
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Ancylidae; Ferrissia |
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P |
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Physidae |
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R |
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Pelecypoda (bivalve clams) |
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Sphaeriidae |
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P |
P |
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Number of taxa in total sample |
38 |
30 |
33 |
35 |
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R=rare (<3 organisms); P=present (3-9 oganisms); C=common (10-24 organisms); |
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A=abundant (25-99 organisms); VA=very abundant (>99 organisms) |
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TABLE 5 |
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SEMI-QUANTITATIVE BENTHIC MACROINVERTEBRATE DATA |
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BRINTON RUN, 00044, AND 00052 |
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APRIL 21, 1999 |
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TAXA |
STATION |
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1BR |
44UT |
52UT |
R1 |
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Ephemeroptera (mayflies) |
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Baetidae; Acentrella |
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1 |
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Baetis |
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1 |
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Ephemerellidae; Ephemerella |
54 |
20 |
17 |
36 |
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Drunella |
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40 |
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Serratella |
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4 |
1 |
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Heptageniidae; Epeorus |
2 |
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3 |
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Stenonema |
2 |
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1 |
2 |
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Ameletidae; Ameletus |
1 |
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Plecoptera (stoneflies) |
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Nemouridae; Amphinemoura |
6 |
18 |
20 |
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Perlidae; Acroneuria |
1 |
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5 |
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Paragnetina |
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1 |
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Perlesta |
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1 |
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Perlodidae; Diploperla |
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2 |
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Tricoptera (caddisflies) |
|
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Glossosomatidae; Agapetus |
1 |
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2 |
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Hydropsychidae; Cheumatopsyche |
4 |
7 |
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Diplectrona |
6 |
2 |
26 |
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Hydropsyche |
3 |
2 |
3 |
6 |
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Lepidostomatidae; Lepidostoma |
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4 |
2 |
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Limnophilidae; Goera |
1 |
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Pycnopsyche |
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1 |
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Philopotamidae; Chimarra |
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4 |
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Rhyacophilidae; Rhyacophila |
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1 |
1 |
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Uenoidae; Neophylax |
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3 |
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Diptera (true flies) |
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Blephariceridae; Blepharicera |
|
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5 |
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Empididae; Clinocera |
|
1 |
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Psychodidae sp. |
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1 |
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Simuliidae; Simulium |
5 |
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2 |
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Tabanidae; Chrysops |
|
1 |
1 |
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Tipulidae; Antocha |
|
1 |
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2 |
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Tipula |
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1 |
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Chironomidae |
15 |
48 |
3 |
8 |
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Megaloptera |
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Sialidae; Sialis |
|
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1 |
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Odonata (dragon-, damselflies) |
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Gomphidae; Gomphus |
|
1 |
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Coleoptera (aquatic beetles) |
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Dryopidae; Helichus |
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1 |
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Elmidae; Dubiraphia |
|
1 |
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Macronychus |
|
1 |
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Optioservus |
7 |
10 |
5 |
2 |
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Oulimnius |
2 |
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Stenelmis |
1 |
3 |
8 |
1 |
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Psephenidae; Psephenus |
1 |
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4 |
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Ptilodactylidae; Anchytarsus |
1 |
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5 |
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Non-Insect Taxa |
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Oligochaeta |
2 |
2 |
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Lumbricidae |
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1 |
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Amphipoda (scuds) |
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Gammaridae; Gammarus |
|
18 |
1 |
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Isopoda (sow bugs) |
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Asellidae; Caecidotea |
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1 |
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Number of individuals in subsample |
115 |
139 |
112 |
126 |
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TABLE 6 |
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RBP METRIC COMPARISON |
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BRINTON RUN, 00044 AND 00052 |
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CHESTER COUNTY |
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METRIC |
STATION1 |
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1BR |
44UT |
52UT |
R1 |
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1. |
TAXA RICHNESS |
19 |
17 |
23 |
21 |
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Cand/Ref (%) |
90 |
81 |
-2 |
*** |
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Biol. Cond. Score |
6 |
6 |
6 |
6 |
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2. |
MOD. EPT INDEX |
9 |
4 |
10 |
12 |
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Cand/Ref (%) |
75 |
33 |
83 |
*** |
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Biol. Cond. Score |
4 |
0 |
6 |
6 |
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3. |
MOD. HBI |
2.69 |
4.31 |
2.53 |
1.83 |
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Cand-Ref |
0.86 |
2.48 |
0.7 |
*** |
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Biol. Cond. Score |
4 |
0 |
6 |
6 |
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4. |
% DOMINANT TAXA |
47 |
31 |
23 |
32 |
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Cand-Ref |
15 |
-1 |
-9 |
*** |
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Biol. Cond. Score |
6* |
6 |
6 |
6 |
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5. |
% MOD. MAYFLYS |
51 |
14 |
20 |
66 |
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Ref-Cand |
15 |
52 |
46 |
*** |
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Biol. Cond. Score |
4 |
0 |
0 |
6 |
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TOTAL BIOLOGICAL |
24 |
12 |
24 |
30 |
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CONDITION SCORE |
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% COMPARABILITY |
80 |
40 |
80 |
*** |
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TO REFERENCE |
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1 - Candidate stations compared to R1 (Birch Run) |
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* - Dominant taxa with HBI score < 3 |
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Return to the Brinton Run Page