Macroinvertebrate Counts; Now and Then Comparing and contrasting
2000s macroinvertebrate count, to 2008s macroinvertebrate count.
Slide 2 Macroinvertebrates Group1- Sensitive organisms, Includes
pollution- sensitive organisms such as mayfly, stonefly, and
caddisfly larva, which are typically found in good quality water.
Group 2- Somewhat sensitive organisms includes somewhat pollution-
tolerant organisms such as, crayfish, sowbugs and clams, found in
fair- quality water. Group 3- Tolerant organisms includes
pollution- tolerant organisms such as, worms, leeches, and midges,
found in poor-quality water. Slide 3 How we did it! First we would
take our plastic container with sediments Then we would search the
sediments carefully for any kind of movement We would make sure not
to harm the organisms in anyway Once we found something we would
determine what kind of macroinvertebrate it was by looking at the
pictures on the ice container which was used to isolate the macros
in their rightful place. Lastly all the groups would combine their
macroinvertebrate counts to form one biosurvey This is how we
separated and determined what group and what macroinvertebrate it
was. Slide 4 How does 2000s Macro Count Compare to 2008s Depends on
how much pollution the stream or creek has experienced over the
years. How much the past and present students have found out about
are streams. For example, if the past students worked harder to
find out the streams problems they would have probably been more
successful to make the stream better. Slide 5 Patcongs
Macroinvertebrate Counts (1) Group I20002008 Stonefly Nymphs00
Caddisfly Larva162 Water Penny Larva 00 Riffle Beetle00 Mayfly
Nymphs02 Gilled Snail20 Dobsonfly Larva60 Index Value- 6#s greater
than 0 x 3= 9 #s greater than 0 x 3=6 Slide 6 Patcongs
Macroinvertebrate Counts (2) Group II20002008 Crayfish 1 0 Sowbugs
10 0 Scuds 23 11 Alderfly Larva 11 0 Fishfly Larva 8 3 Damselfly
Nymphs 23 8 Watersnipe Fly Larva 0 1 Crane Fly Larva 2 0 Beetle
Larva 8 8 Dragonfly Larva 2 4 Clams 11 2 Index Value- 14 #s greater
than 0 x 2= 20 #s greater than 0 x 2 =14 Slide 7 Patcongs
Macroinvertebrate Counts (3) Group III20002008 Aquatic Worms610
Midge Fly Larva50 Blackfly Larva31 Leeches00 Pouch/Pond Snails00
Other Snails00 Index Value-2 Total Index Value- 22 #s greater than
0 x 1 = 3 All Index Values added together= 32 #s greater than 0 x 1
= 2 All Index Values added together to get 22. Slide 8 Is the Water
Quality For Patcong Creek Acceptable in 2008 & 2000? Poor,
Fair, Good, or Excellent Excellent= (> 22) Good= (17-22) Fair=
(11-16) Poor= ( Is the Water Quality for Miry Run Acceptable in
2008? Poor, Fair, Good, or Excellent Excellent= (> 22) Good=
(17-22) Fair= (11-16) Poor= (
