Trout at Transition 2013-2014
Jan 03, 2016
Trout at Transition 2013-2014
While we were there, we tested:The variety of fish, and
the size of said fish.Checking the depth of the river.
Looking at the composition of the riverbed.
The variety of invertebrates, by kick sampling.
The speed (velocity) of the river, using oranges.
Investigation
WE FOUND FROM INVERTEBRATE DATA
THAT OUR WATER WAS A2 – GOOD BUT IT WAS LACKING IN FISH.
Substrate SizeThe substrate size was far to small there was not a variation of different types of substrate. Which means there is not enough habitat for young trout to live and for trout to hide.
Why the substrate is so smallThe Substrate is so small because there is no meanders so the water flows fast taking large stone with it and leaving mostly just sand.
MeandersThe Mouse Water is mostly straight and some
points meander.Quite a while ago the Mouse Water was
straightened so less meanders were there.This happened so that farmers had more
useful land to grow crops.So there aren’t many meanders.
Depth of the river…Overlooking The Work
Depth 1 = 31cmDepth 2 = 31cmDepth 3 = 31cmThis proves that the river is fairly straight and
that the large rocks have been dragged back because the river is straight and so it is faster making it easier to carry away rocks and leave the small stones and so on, creating sand.
The Mouse in ParticularThere was NOT many plants on the river
banks, so the land could be easily eroded.This could, in turn, cause the land to fall in
the river, making it massively dirty.There were no trees nearby, meaning the fish
had no shade to cool down.There was some riverweed, which is a good
sign.
Plant trees and add fencesFences can keep livestock away from the river.
Vegetation along the riverbank can strengthen it.Roots and branches can provide habitat for fry.
Create meanders For fish to stay in and to calm the water