Difference between revisions of "Macroinvertebrates"

Revision as of 14:06, 18 April 2023

Method categorization for MACROINVERTEBRATES

Method categorization
Quantitative	Qualitative
Inductive	Deductive
Individual	System	Global
Past	Present	Future

In short: Netting, kick sampling and taking benthic cores are methods for collecting macroinvertebrate samples to obtain information about the water quality of a river, lake or pond.

	Netting	Kick sampling	Taking benthic cores
Zone	nekton	riffles in nekton	benthal
Speed of water	slow	fast-flowing	still or slow-moving
Depth of water	shallow (pond nets), deep (tow nets)	shallow	shallow/ deep (using a boat)

Netting

What the method does

File:Fig1 TeichkescherMACROINVERTEBRATES

Figure 1. Pond net for catching invertebrates. It is important that the collecting bag is long enough to throw it over the brim to prevent invertebrates from escaping. Source: https://www.der-gartenteich.com/teichkescher-klappbar-art.nr.-84296?sPartner=google-de-ts&c=172&gclid=Cj0KCQiA1sucBhDgARIsAFoytUvZORDGHrnxv01LJzM4d4JWxv9RoA5PRK0qP6bboR64KUU2WktN_dgaArTnEALw_wcB

The author of this entry is Anna-Lena Rau.

@@ Line 30: / Line 30: @@
 ==Netting==
 === What the method does ===
-[[File:Fig1 TeichkescherMACROINVERTEBRATES.jpg|thumb|Source: https://www.der-gartenteich.com/teichkescher-klappbar-art.nr.-84296?sPartner=google-de-ts&c=172&gclid=Cj0KCQiA1sucBhDgARIsAFoytUvZORDGHrnxv01LJzM4d4JWxv9RoA5PRK0qP6bboR64KUU2WktN_dgaArTnEALw_wcB ]]
+[[File:Fig1 TeichkescherMACROINVERTEBRATES|thumb|Figure 1. Pond net for catching invertebrates. It is important that the collecting bag is long enough to throw it over the brim to prevent invertebrates from escaping. Source: https://www.der-gartenteich.com/teichkescher-klappbar-art.nr.-84296?sPartner=google-de-ts&c=172&gclid=Cj0KCQiA1sucBhDgARIsAFoytUvZORDGHrnxv01LJzM4d4JWxv9RoA5PRK0qP6bboR64KUU2WktN_dgaArTnEALw_wcB ]]
-Netting with a pond net (Figure 1) is a quick method to catch macroinvertebrates. Depending on the species that should be caught, different kinds of movements are suggested. Moving the net in a figure of 8 above the substrate stirs the invertebrates so that they can be caught with the net. By pressing the rim of the net against rocks, tightly clinging nymphs can be caught. At the end of the movement, the net is twisted so that the bag flips to the other side of the rim and the invertebrates are prevented from escaping.
 ----