Unidentified Magenta Slime on Remote Tasmanian Coast Raises Concerns of Possible Phytoplankton Proliferation
Agencies in the island state are attempting to pinpoint a magenta ooze that has surfaced on a secluded beach, with some scientists concerned it could be an phytoplankton proliferation.
Widespread Occurrence Along Coastline
The pink-tinged sludge appeared along a stretch of a coastal area about 37 miles south of the city. A similar sludge has also been documented on parts of another local beach and Little Taylors Bay.
Examples Collected for Testing
Examples have been taken and sent to the Environment Protection Authority for testing. A official commented that "algae outbreaks are a natural occurrence in response to shifts in minerals, warmth, rain or light".
"The events are sometimes called reddish tides because the blooms can change the water crimson," the spokesperson said. "Few algae outbreaks are dangerous, with several kinds acting as a primary source of nourishment for marine life in the oceanic food chain."
"The primary reason of red tides in local waters is the sea plant Noctiluca scintillans, which can create bioluminescent light displays at night."
Increasing Occurrence Associated with Environmental Shifts
Phytoplankton proliferations occur naturally but their frequency has grown in recent years, partly due to climate change and contamination that combine to create nutrient-rich waters geared for the quick expansion of dinoflagellates.
Dinoflagellates are a type of algae that usually serve as the ocean's waste processors. During a outbreak, there is a rapid growth in their colonies that disturbs the normal functioning of ecosystems.
These phenomena have been equated with marine infernos and can persist in growing as long as circumstances are favorable. In worse situations, sensitive marine ecosystems can be devastated as marine life is eliminated or suffocated, supplying more nutrients for the proliferation.
Recent Catastrophic Event in South Australia
Another region recently dealt with a severe algal bloom along its southern shore after a series of sea temperature spikes, which spread across thousands of square kilometres. The event left surfers with eye irritation and severe coughing and may have killed up to numerous aquatic species across 400 different species, according to government calculations.
Scientist Assessment on the Current Case
A marine expert, who helped investigate the start of that event said, based on pictures of the Tasmanian outbreak, the most likely species involved was Noctiluca scintillans, a kind of dinoflagellate also known as "ocean glitter".
"There are lots of these blooms around Tasmania of late," she added.
Coleman explained this organism did not create toxins like the type involved in the previous harmful outbreak, but it does ingest tiny creatures and "lots of fish eggs", meaning fish and crustacean species were most at risk.
"It's common to observe a bloom of this algae after a proliferation of something else, or an event such as a fish reproduction," she noted.
Demands for Response and Safety Concerns
A campaigner, who gathered specimens of the rosy slime in Tasmania, said it seemed the possible outbreak had "expanded greatly" and proposed the aquaculture sector was the most likely culprit, pointing to comparable events elsewhere.
"Therefore we needs to issue a clear message here, the government and the EPA need to react to this. We need to analyse the samples we've collected and we need to notify the public here," she stated.
The scientist stated she had concerns for community health after experiencing a prickling feeling along her body while being exposed with affected seawater.
Claims of Deceased Animals and Calls for Government Response
An conservation group has documented deceased sea creatures and expired organisms washing ashore, with a longtime environmental campaigner labeling the event as an "natural disaster" and urging the state premier to visit and "lead the reaction that officials must be doing".
"The leader needs to know this is a catastrophe in the making, financially as well as environmentally."
Leadership Response
Addressing journalists, the premier said he was did not know of any links between the algal bloom and the salmon industry, saying laboratory analysis was needed before determinations could be made.
"It is vital to guarantee our rivers and seas are environmentally safe and sustainable," he added.
"Our coastal assets across the island are our treasures and we need to make sure the people and our industry can coexist to enjoy our waterways efficiently and responsibly."