Pocketmags Digital Magazines
Pocketmags Digital Magazines
.png);" />    You are currently viewing the Australia version of the site.
Would you like to switch to your local site?

Natural Capital and Ocean Lungs

THE EVIDENCE is abundant that our oceans contribute much of the oxygen we use, around 50-85% of oxygen in the earth’s atmosphere, and that this oxygen production is affected by pollution. Minute organisms called phytoplankton which live in the ocean waters, close to the surface are the cellular powerhouses which produce and release oxygen to the air. As water becomes polluted and opaque, energy from the sun is impeded, and these micro-organisms are unable to function fully, so that oxygen release is reduced.

The health of the global marine environment is in serious decline. Much is due to the burden of plastics which find their way into the seas, taking around 200 years to decompose, and killing vast numbers of marine species. Around 10 million tonnes of litter, mainly plastics are dumped in our seas each year.

But the main cause of water pollution is nutrient pollution, from sewage and from agricultural waste, livestock effluent in particular. A number of studies have shown that 40% of rivers in England alone are polluted with sewage, which causes the growth of algae called epiphytes. These attach to marine vegetation and prevent the passage of light, leaving the waters opaque and lacking oxygen for marine life. In the UK, farming is one of the major causes of water pollution, with inadequate storage and disposal of slurry especially from intensive livestock factory farms, which enters rivers and flows into coastal waters.

Read the complete article and many more in this issue of iScot Magazine
Purchase options below
If you own the issue, Login to read the full article now.
Single Digital Issue March 2018
This issue and other back issues are not included in a new iScot Magazine subscription. Subscriptions include the latest regular issue and new issues released during your subscription.
Annual Digital Subscription $54.99 billed annually
Monthly Digital Subscription $6.99 billed monthly

This article is from...

View Issues
iScot Magazine
March 2018

Other Articles in this Issue

Alyn Smith is one of Scotland’s six Members of the
MICHAEL Stewart is not your average former footballer.
This man does not strike me as the most obvious poster-boy
The fatal problem with Pete Wishart’s manifesto for
Well, some of us do. It’s that fundamental human urge
We were strolling north along Middle Meadow Walk in
From Muriel Spark in a studded choker to James Clerk
Gerda Stevenson’s Tribute to Women of Scotland
Wee Ginger Dug
Orkney has the oldest public lending library in Scotland
Internati onal Women’s Day has evolved over the last
nobody’s heard of…
I’ve had to stop cleaning the house – the furniture
Genocide is a powerful and emotive term. First coined
In April 2018 Scotland’s general practitioners will
Three apparently unconnected things. A paper published
APPROACHING International Women’s Day on the 8th of
TOBY makes the big decisions. That’s how it should
NATIONAL days are a curious thing. They generally are
IN DISCUSSIONS about the immense resources and natural
IT WOULDN’T have mattered much had Annie Davidson McEwen
THIS month has been chaotic with little time to spare
THAT ’S the thing about a dog – you have to take it
EDINBURGH -born Philip Kerr’s series of thrillers featuring
Heed my wisdom or Boris will make another speech
THIS month I’ve decided to take a (gold) leaf out a
Got a picture with a special memory for you? It might
Chris Cairns’s widely acclaimed cartoons chronicle