A. Describe (write a paragraph) what is going on at these two sites using the following data collected by d-net sampling. Include number of species, abundance, abundance of tolerant and sensitive species, Shannon-Weiner diversity (log base 10), and Hilsonhoff Biotic Index.

Site 1 Site 2

Above STP Below STP

1. Prostoma graecense 5 23

2. Dugesia tigrina 0 18

3. Elliptio lanceolata 23 0

4. Laevapex fuscus 2 11

5. Stagnicola 3 11

6. Physella 2 21

7. Cincinnatia floridana 3 3

8. Dero sp. 0 17

9. Tubifex tubifex 0 173

10. Helobdella elongata 2 7

11. Ephemera guttalata 18 0

12. Baetis tricaudatus 17 0

13. Stenonema vicarium 2 0

14. Ephemerella needhami 21 0

15. Chironomus 0 65

B. Describe (write a paragraph) what is going on at this site using the following data collected by 500 m of electroshocking. Include number of species, abundance, abundance of tolerant and sensitive species, Shannon-Weiner diversity (log base n), and Gannon’s Index of well being. The first number is the N and the second is the biomass (kg) of each species at that site.

Site 1 Site 2

Above STP Below STP

1. Goldfish 5, 7.3 23, 33.2

2. Common carp 1, 2.2 18, 56.1

3. Southern brook lamprey 4, 0.023 0, 0

4. Quillback 2, 1.2 11, 8.3

5. Brown bullhead 3, 1.1 11, 8.9

6. Grass carp 2, 5.6 21, 45.2

7. Taillight shiner 3, 0.013 3, 0.010

8. Bluntnose minnow 2, 0.023 17, 0.111

9. Spottail shiner 23, 0.115 107, 0.535

10. Least brook lamprey 2, 0.010 7, 0.035

11. Speckled chub 3, 0.006 0, 0

12. Silverjaw minnow 3, 0.015 0, 0

13. Ironcolor shiner 2, 0.015 0, 0

14. Weed shiner 2, 0.030 0, 0

15.

Dixie
chub 12, 0.30 65, 1.63

 
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