Macro-invertibrites
bio-indicators Sara-13 Taylor-105
Streams,rivers,wetlands and lakes are home for many small animals called macro-invertebrates.They include, insects, crustacents, molluclues, arachnids and annelids. The term Macro-invertebrates describes those animals that have no backbone and can be quite large,such as freshwater crayfish, however most are very small.The macro-invertebrates nick name is macro.http://makahwater.com/Macroinvertebrates.html
How to collect macro-invertebrates
- sample all habits: pool, riffle, run/glide
- D-frame nets and kick nets
- collect a total of 50-100 individuals
- identify and count numbers of each type
- complet data form
Field Survey of Macroinvertebrates in the Susquehanna River Basin
How to catch your own macros
When we first saw macros we were grossed out because the macros are a little gross looking. If you wanted to you could go to a local stream and catch some of your own all you need is a D-frame or a kick net. First you go in the water and place the net in holding the end of one side of it, then you start moving your feet side to side or front to back, then after about a minute doing that you go on the dry land and look at everything you brought. If your smart you can print of a macro-invertebrate graph that shows all the types of macro-invertebrates and bring it with you for you can know what macros you caught. And if your lucky you might just catch a small fish. Good luck on your findings.
Stonefly larva
This macro has two tails and and antennasthat are long and stiff . Link to pic
This is a good amount of macro-invertebrate. Link to pic.
.This picture includes stone fly larva, two riffle beetle larva, riffle beetle and a mayfly larva. Link to pic.