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Algal Growth Smothers Marine Life

Published: (Updated: ) in Australian News by .

The Tasmanian Alliance for Marine Protection (TAMP) has put Tasmania’s industrial salmon companies on notice that it will produce more evidence over coming weeks that soaring nutrient levels are damaging marine life in areas around the floating fish cages operated by Tassal and Huon Aquaculture. Supporting the Killora Community Association’s demand for action against Tassal […]

The Tasmanian Alliance for Marine Protection (TAMP) has put Tasmania’s industrial salmon companies on notice that it will produce more evidence over coming weeks that soaring nutrient levels are damaging marine life in areas around the floating fish cages operated by Tassal and Huon Aquaculture.

Supporting the Killora Community Association’s demand for action against Tassal in the D’Entrecasteaux Channel for breaching its lease conditions, TAMP is uncovering evidence of similar and growing issues in the Huon River estuary and on the Tasman Peninsula.

“TAMP will shortly produce further video evidence that reveals how degraded marine life has become in the vicinity of the industry’s fish cages,” says Peter George, co-chair of the state’s peak marine protection body.

“Unacceptably high nitrogen levels spewing from floating salmon cages encourage algal growth.

“That growth smothers marine organisms far beyond the 35-metres permitted under the companies’ license obligations.

“The industry and the government will continue to deny that fish faeces and wasted fish feed are responsible for changing marine conditions, but the evidence is now overwhelming.

“Previous studies have shown that the vast majority of bioavailable nitrogen in the Channel and the Huon – over 95% – is derived from industrial fish production.

“That’s not an allegation, that’s a fact revealed in a 2017 report by researchers at the Institute of Marine and Antarctic Studies (IMAS).

“Such huge concentrations cannot have anything but a negative impact on marine life and it has to stop.”

Algal growth is smothering marine life in Long Bay near Port Arthur, was recently responsible for smothering White Beach on the west side of the Tasman Peninsula and is destroying fish breeding areas and abalone stocks in the Huon estuary.

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Source: Tasmanian Times https://www.tasmaniantimes.com/2020/11/algal-growth-smothers-marine-life/#utm_source=rss&utm_medium=rss&utm_campaign=algal-growth-smothers-marine-life

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