Fish Sticks
Well-known member
PA is pretty much just like New Zealand!!!!
i.stuff.co.nz
In a classic study reported in 1991 and summarised by Jellyman, researchers looked at streams in Otago where waterfalls of at least 3 metres high were present. Waterfalls this size are barriers that browns can't get past.
Above the waterfalls, native galaxias fish were common and often thriving. Below the waterfalls, galaxias were "repeatedly absent". This was true regardless of the land-use beside the streams.
Citing more than 100 scientific papers, Jellyman and colleagues detail the "significant deleterious effects on native biodiversity" by brown trout.
“Jellyman and colleagues endorse a plea by other researchers for "increased restoration efforts to address impacts of trout on native fish and the seriously endangered galaxiid fauna".
“They also make a plea of their own.”
"Angling advocates have generally been at the forefront of efforts to maintain water quality, and have been justifiably quick to point out the positive effects of their efforts," they write. "Nevertheless, farmers, city dwellers and anglers must all accept responsibility and deal with all the problems they have created.
"As part of that, anglers need to accept that the brown trout‐based sports fishing resources, which are highly valued and woven into the fabric of New Zealand life, have had significant deleterious effects on native biodiversity."
Beloved brown trout damage native fish, insects and waterways
Brown trout are much favoured by anglers but science shows they damage native fish and waterways.
i.stuff.co.nz
In a classic study reported in 1991 and summarised by Jellyman, researchers looked at streams in Otago where waterfalls of at least 3 metres high were present. Waterfalls this size are barriers that browns can't get past.
Above the waterfalls, native galaxias fish were common and often thriving. Below the waterfalls, galaxias were "repeatedly absent". This was true regardless of the land-use beside the streams.
Citing more than 100 scientific papers, Jellyman and colleagues detail the "significant deleterious effects on native biodiversity" by brown trout.
“Jellyman and colleagues endorse a plea by other researchers for "increased restoration efforts to address impacts of trout on native fish and the seriously endangered galaxiid fauna".
“They also make a plea of their own.”
"Angling advocates have generally been at the forefront of efforts to maintain water quality, and have been justifiably quick to point out the positive effects of their efforts," they write. "Nevertheless, farmers, city dwellers and anglers must all accept responsibility and deal with all the problems they have created.
"As part of that, anglers need to accept that the brown trout‐based sports fishing resources, which are highly valued and woven into the fabric of New Zealand life, have had significant deleterious effects on native biodiversity."
