macroinvertebrate report font size 12, no page requirement.


Follow the instruction and make a report. Instruction.docx Use the Group 1 data in this lab data  macroinvertebrate data 2015.xlsx Font size is 12 new romans, use the graph, tables. and complete analysis anddiscussions. All the intruction from instruction page must be followed. no short answersand must be complete sentence. There are no page requirement but 2-4 pages arepreferred. low quality or incomplete work, wrong work won’t be accepted.


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Lab Report – Macroinvertebrates
You have collected and sorted out macroinvertebrates by classification group. Count the numbers in
each category and summarize the habitat description of the different streams. I will post the tallies for
each leaf pack on Moodle. Each person will do a write-up and turn in a report. You will base your
analysis on your individual leaf pack data as well as comparing to the class.
Introduction and Purpose: There should be a research question or hypothesis that you want to
investigate. For example, the purpose of the macroinvertebrate analysis is to compare different streams
for their water/habitat quality. A hypothesis that has already been tested by others (Clinton River
Watershed Council, Stroud Water Research Center, and others) is that macroinvertebrates can be used
as a measure of stream quality. Different macroinvertebrates can thrive under different habitat
conditions (e.g., presence of leaves, level of shade, stream flow, dissolved oxygen content) and water
quality (quantity of pollution including too much nutrients from agriculture runoff or fertilizers from
lawns, etc.). Certain macroinvertebrates are indicators of polluted waters, while the presences of
certain other ones that are sensitive to pollutants are indicators of cleaner water and/or good habitat.
State up-front in your introduction which ones are indictors of good versus poor habitat/water quality;
all species may be present under good conditions, but a preponderance of certain species can indicate
poor conditions or good conditions. You will be evaluating diversity and abundance.
Materials, Methods
Describe what was done (in past tense and in full sentences) from the placement of the leaf packs, to
their collection, and lab identification. Do not put the actual data or discussion here; just what was
Data – present in tables and/or graphics, the results of your analysis. Write in complete sentence form
to introduce to the reader to your data….example, “Table 1 shows the categories of macroinvertebrates,
and the numbers of macroinvertebrates found/identified in each category”. Do this for your group’s
leafpack, only. Put as much detail as you can into describing what you found in your leafpack. Do not
interpret the findings here; that goes in the next section. Describe the stream habitat for your leaf
Discussion (Analysis) and Conclusions
What do your data say? How do they confirm or contradict your hypothesis (and/or the hypothesis of
others)? How do your data compare with other groups? Show the summary data (tallied numbers) for
the other groups and discuss the findings in the context of water and habitat quality. Be more specific
when discussing your own leafpack. What are the implications to the food chain (birds, frogs, fish, etc.)?
Group (Leaf pack)#
Water body/location
Odonata (dfly)
Gastropoda (snails)
Group 1
OU Galloway Creek (10 days)
inClinton River (CR) Watershed
1 aquatic earthworm
3 sowbugs
Group 2
Paint Creek (14 days)
Group 3
Tributary of CR (16d)
in the CR Watershed
Lake Orion area
9 sowbugs
7 scuds
2 stoneflies
3 mayflies
2 stoneflies
1 mayfly
1 possible larvae case of caddisfly
2 water pennies; 1 water beetle
5 snails
1 crane fly
1 crane fly
12 crayfish
1 water boatman (true
bug, Hemiptera)
more other
1 leach; 8 chiggars; 1 spider
EPT; Ephemeroptera; Plecoptera and Trichoptera are the most sensitive indicators of good water quality
Site Descriptions
Group 1
Group 2
Groups 3, 4
in a ditch off from stream – pack went partly dry at end; well shaded; mild development, mostly natu
partial shade. Pack was in a deep hole along river bank with sandy bottom. Mild development in the
sandy bottom. Compete shade, naturalistic environment.
problems with bags; 3 had sand
Group 4
Tributary of CR
Lake Orion area
2 water bugs; 1
other invertebrate
d development, mostly natural habitat.
m. Mild development in the area.
blems with bags; 3 had sand (& physical damage?)
4 may have been too close to surface of water

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