400 Poisoned Lakes

[Leon Roskilly]

See:

 

http://news.independent.co.uk/environment/article2258886.ece

[ColinW]

That article is the biggest load of tripe I've read in many a year

 

Malham Tarn, Yorkshire Dales

 

Plagued by Canadian pondweed, probably introduced by anglers or hikers

 

Yeah, that's something I often do, take pondweed with me when I'm fishing! Are these people for real?

[Anderoo]

A sad story. Frensham used to suffer terrible blue-green algae blooms in the summer and autumn, so thick you couldn't see through it. Horrible stuff.

 

I can see how weed can be transfered between waters via keepnets/landing nets/boots.

 

I wonder how the invasive roach got into Windermere...?

[dogstick]

I can`t seem to grasp the article to be honest,whats the writer looking for,he doesn`t seem to have any conclusion,or ask any questions or put up or look for solutions.Or maybe he just has it in for those foul polluting sheep!

[ColinW]

I wonder how the invasive roach got into Windermere...?

 

They've always been there. They have been present in relatively small numbers in the biologists sampling since they first started. The "sudden" increase in their numbers is due to the water becoming more suited to their needs for some reason. Investigating the ACTUAL cause of their increasing numbers would be more useful than the kind of speculation in the article.

 

Here's a few more speculative ideas

 

Eutrophication due to sewage

Decrease in predation due to

drop in char numbers

drop in perch population

Increase in food due to more coarse anglers (groundbait etc)

Mild winters

 

Any or all of the above seem perfectly reasonable to me, BUT that doesn't mean they are the real cause. It may be something ridiculously obscure like an increase in acidity due to acid rain leading to minnows not breeding successfully allowing roach eggs to survive, who knows?

[Bobj]

A sad story. Frensham used to suffer terrible blue-green algae blooms in the summer and autumn, so thick you couldn't see through it. Horrible stuff.

 

Here is an article re the blue green algal blooms.

 

http://en.wikipedia.org/wiki/Cyanobacteria

 

Australian lakes and dams have the stuff every year. Seems to be a 'product' of farming practises.

You're right, mate, "horrible stuff".

[chesters1]

Frensham still does get algal blooms but dont really suffer from it ,great for stopping dogs though and poxy swimmers.

if you want to see a very strange coloured pond look at google earth

: 51d 13'10.68N

 

0d 45'20.35" W

 

hope that makes sense! .that colour all year round and i bet it leaching from the surrounding landfill sites.

 

if that doesent make sense .turn the map of england due north (ie facing north south),find Aldershot (put aldershot pointing north) and its 2.11 miles south ,you cant miss it

 

if that doesent make sense ....its just up the road from me

Edited February 12, 2007 by chesters1

[rooney888]

look at pic below. the pool on right is two different colours. its the only pool like this around the area and there are about 6 pools within a 2 miles or less. all have gravel bottoms and noone can explain it and some have said it could be because of pollution.

 

Edited February 12, 2007 by rooney888

[chesters1]

i thought you meant different colour heres different

 

 

the top "pond" wasent it was just a pit full of water now filled with land fill.

[lyn]

Frensham still does get algal blooms but dont really suffer from it ,great for stopping dogs though and poxy swimmers.

if you want to see a very strange coloured pond look at google earth

: 51d 13'10.68N

 

0d 45'20.35" W

 

hope that makes sense! .that colour all year round and i bet it leaching from the surrounding landfill sites.

 

if that doesent make sense .turn the map of england due north (ie facing north south),find Aldershot (put aldershot pointing north) and its 2.11 miles south ,you cant miss it

 

if that doesent make sense ....its just up the road from me

 

When I fish Frensham in the summer, Liam and his mates swim and I fish beside then which pond are you on about above?

 

lyn