Subject: Catching macro-organisms in rivers

Dagmar Fertl (
Tue, 13 Apr 1999 08:32:57 -0400

     I'm not sure how to answer your question, since I am a dolphin 
     biologist and don't know much about rivers, particularly in Belgium.  
     You should probably contact an expert on the rivers and the animals 
     that live there in Belgium.  I assume you're asking about catching 
     fishes, so perhaps you can call a local aquarium, or even ask at a pet 
     store and they might be able to help you more.  Good luck on your 

______________________________ Reply Separator _________________________________
Subject: methods of catching macro-organisms
Author:  "Luc Marien" <> at ~smtp
Date:    4/12/99 5:23 PM

I have to make a little report for school. It is about macro-organisms that 
live in small rivers in Belgium. It also includes methods how to catch those 
creatures and the factors that will influence the catch. My question to you 
is whether or not you know that is already proved in scientific studies that 
abiotic factors such as depth, time of holding the net underwater,... have 
an actual effect.