no doupt in ww2 everything catchable was taken for the pot and it happened in the 50's if fish and birds (even songbirds were eaten in ww2) were not sustainable naturally they wouldn't be here today and remember pike had a very hard time by bailiffs until it dawned on people pike bring balance to a water.
if anything in nature is thinned out the ones remaining grow faster and breed earlier ,if they are completely removed then the other species fill in the gaps until a balance is achieved (foxes and rabbits rules) but without a major predator they tend to eventually weaken and stunt themselves etc.
even predators like herons and grebes are factored in ,i had a conversation with an irate angler moaning that a heron was eating fish ,i answered if herons were a threat to fish then fish would have died out millions of years before man appeared. mink in reality hardly make any difference in fish stocks !they tend to scout the banks for dead or sick fish before going to the effort of catching fit ones but their bad points are they like birds as well
so one of the signs is suddenly your birdlife disapears they also eat eggs but so do crows ,badgers ,foxes and weasels.
single corms probably kill more fish through infection than they eat and whilst one wont make a difference more than one tend to attract their friends until the place is stripped of edible fish and sick larger ones through infection brought on by wounds.
the biggest threat to everything is man ,whilst we "like" fish we dont take too long to pollute the water they live in ,we bring unbalance to waters (especially commercials) adjusting the balance of fish that nature would never do ,commercials stocks need anglers to feed them without them they would starve then refuse to breed and eventually become balanced again ,nature would then reintroduce the missing bits until all was well again
Edited by chesters1, 05 August 2008 - 08:37 AM.
Believe NOTHING anyones says or writes unless you witness it yourself and even then your eyes can deceive you
There is only one opinion i listen to ,its mine and its ALWAYS right even when its wrong
Its far easier to curse the darkness than light one candle
Whitby scallops caught by scottish boats best that money can buy,the nearer the shore they're dredged the better they taste