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Online Discussion: Tracking new emerging diseases and the next pandemic

Algae infections

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Dutch Josh View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dutch Josh Quote  Post ReplyReply Direct Link To This Post Topic: Algae infections
    Posted: October 07 2018 at 10:29pm
https://medicine.uiowa.edu/pathology/content/algae-identified-cause-rare-infections, https://en.wikipedia.org/wiki/Karenia_brevis,
https://www.youtube.com/watch?v=nBzeIteiqJI&t=1s

Algae can spread toxins that can effect the respitory system, cause longproblems. Due to warmer water, more flooding these ajgae-and their toxins-reach urban area's and will effect health of a lot of people.
(Although a lot of info is on the US/Mexico https://en.wikipedia.org/wiki/Algae#Distribution algae are spread allover the planet-may even be spread by air/wind !)

-Algae take away oxygen-so a lot of dead fish (and further up the food chain seamammels/birds) can be the result of widespread algae.

-Hurricanes, sea surface warming=more spread of algae and making it become a https://en.wikipedia.org/wiki/Harmful_algal_bloom.
Que sera, sera, Whatever will be, will be, The future is not ours to see, Que sera, sera !
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carbon20 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbon20 Quote  Post ReplyReply Direct Link To This Post Posted: October 08 2018 at 2:40pm
we get them often, here in Western Australia.......

Red and Green Blooms......




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Algal blooms
The term algal blooms may be used to describe macroalgae, which are large visible free floating or rooted plants, or microalgae which require a microscope to see but in mass are highly visible.Microcystis algal bloom Matilda Bay

Both macroalgae and microalgae (phytoplankton) are natural and desirable components of aquatic ecosytems.

Algal blooms are natural phenomena that occurred before human development in response to changes in temperature, light, rainfall, or changes in limiting nutrients. Watershed clearing, agriculture and urban discharges, which add more nutrients, light and organic matter have led to increased frequency and duration of algal bloom and in some cases a switch to more toxic species. Persistent and widespread blooms lead to loss of biological function of the waterway.

Extreme macrolagal growth can completely dominate an estuary or river such as in the Peel Harvey during the late 1980s and in the Oyster and Princess Royal Harbours. In these cases macrolagal blooms shaded seagrasses and led to their loss or decline. In some cases phytoplankton can also dominate and cause ecosystem collapse. In the Peel Harvey in the 1990s the toxic phytoplankton Nodularia Spumigena replaced the macroalgae that had smothered the seagrasses.

We refer to nuisance algal blooms as those that discolour the water and which may leave residue on the skin of swimmers.

The term harmful algal bloom is used for those phytoplankton that sometimes produce toxins that affect either aquatic life, such as fish, or even human health. Harmful algal blooms (HABS) are a global problem often in the areas of shellfish cultivation or aquaculture. Many of the produced algal toxins enter the shellfish and pose a serious human health risk leading to many deaths in Europe and the United States.

For natural waters, surveillance of phytoplankton is undertaken state wide in at-risk rivers and estuaries under the department's Statewide Algal Management Strategy. The Department of Water, in partnership with the Department of Health, has developed a statewide algal bloom response protocol.

We also work with Department of Fisheries in accordance with the Fish Kill Response protocol.

In the event of an algal bloom samples are collected and sent to the department's Phytoplankton Ecology Unit. Samples are analysed and the Department of Health is contacted if necessary. The Department of Health liaise with relevant local governments to issue a health warning when required.Blue-green algae bloom in the Narrows Lakes, Perth.

If you see an algal bloom please report it to:
the Department of Water's ALGALWATCH 08 6250 8064 (officehours)
your nearest Department of Water office
the Swan River Trust (for the Swan Canning Riverpark) on 9278 0900 or after hours on 0419 192 845.
For your safety:

Contact with some algal species can be harmful for humans and pets - if you notice signs of an algal bloom it is recommended that you and your pets do not go swimming.
Some species of algae produce a toxin that can contaminate wild shellfish and make them unsafe to eat.
See the Department of Health website and see Algae: Blooms, Scum and Recreation.
For further information about algal blooms see:
Factors contributing to fish kills and algal blooms diagram
Weekly microalgae activity reports for the Swan Canning River
Algal blooms (Water facts 6)
Algal blooms in the Swan Canning Estuary: Patterns, Causes and History (River Science Issue 3)
Summer surprise - the Swan River blue-green algal bloom, February 2000 (River Science Issue 2)
Peel waterways centre fact sheets
12 Monkeys...............
1995 ‧ Science fiction film/Thriller ‧ 2h 11m a must for AFT
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EdwinSm, View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote EdwinSm, Quote  Post ReplyReply Direct Link To This Post Posted: October 08 2018 at 10:11pm
For us (Baltic Sea) it is the blue-green algae that causes problems. It is being feed mainly* from runoff of agricultural fertilizer, but the sea has such a stock that the algae will be well feed for years to come.

Big storms that oxygenate the sea also stir up the pollutants from the bottom so the benefits are short lived, and there are too many "dead areas".



* We had to spend a lot of money to link up with the village sewerage system as stand single septic tanks were being banned as part of the drive to stop pollutants reaching the sea.   
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