Counting the cost of plastic pollution
Plastic continues to fill the world’s oceans at an astonishing
rate, inflicting major environmental damage. The cost is not merely to the
natural world though, as the economic impact of this man-made predicament is
also immense
An estimated eight million tons of plastic flow
into the oceans every year. The detrimental impact of this on the industries
and the citizens who rely upon them for their livelihoods is huge
We’ve finally reached
that point – the one at which we can no longer bury our heads in the proverbial
sand. The magnitude of the plastic problem facing our oceans has reached such a
level that even the most indifferent can no longer ignore it. Consequently,
over the past year or so, we have been seeing the issue in the news more and
more. The public is now aware, and this awareness continues to grow.
The magnitude of the
plastic problem facing our oceans has reached such a level that even the most
indifferent can no longer ignore it
It’s driven in part by
the mounting scientific evidence that is surfacing, in addition to the growing
number of related incidents proliferating around the globe. “We’ve had stories
like huge dumps of litter on the beaches of Bali, which is familiar to many of
us in the West. We’ve seen large [swathes] of waste appearing, seemingly
spontaneously, off the Caribbean coast and Latin America.
There’s even been
fatalities or disasters associated with plastic waste; in Sri Lanka, for
example,” said Dr Malcolm Hudson, Associate Professor in Environmental Sciences
at Southampton University.
Undoubtedly, David
Attenborough’s incredibly popular Blue Planet II has also
played a role in this growing societal consciousness. “It makes for very
spectacular and very emotive television – seeing a negative story among all the
beautiful things in the natural world,”
Hudson added. Indeed, during the
docu-series, and in the final episode in particular, viewers see first-hand
just how much plastic is floating around our seas, the impact it has on marine
life, and the damage it can inflict on the food chain. The reaction of most is
one of sheer sadness: a disaster is all the more disconcerting when we know it
could have been avoided.
At what price
According to the Ellen
MacArthur Foundation, it is estimated that around eight million tons of plastic
flow into the oceans each year – but as great as this figure is, others believe
it has actually been underestimated. Even more disturbing are the projections
if we continue down our existing pathway: a report published by the foundation
on behalf of the United Nations claims that by 2050 plastic waste will outweigh
fish in the world’s oceans.
Acting as a sad symbol
of this intensifying mess is the Great Pacific Garbage Patch, an ocean current
in which huge swathes of plastic debris gather. Located between California and
Hawaii, it is believed to contain 1.8 trillion plastic pieces and span 617,000
square miles – which, to put this into perspective, makes it roughly three
times the size of France.
Unsurprisingly, all this
plastic is having a direct impact on marine life. As recent reports indicate,
creatures both large and small are ingesting plastic materials, believing them
to be food, and starving in the process.
They also act as poisons in the gut,
while their very presence can cause severe digestive problems that lead to
death. Sea birds are affected too: according to research undertaken by Jennifer
Lavers of the University of Tasmania, every bird on Australia’s Lord Howe
Island now has plastic in its stomach.
In addition to the
deeply detrimental impact that plastic pollution is having on marine life,
there are other underlying costs too, particularly with regards to both marine
and coastal activities, and in turn the economic benefits that local
communities and nations derive from them. Judith Schäli, a researcher at the
World Trade Institute,said that environmental
damage to marine ecosystems is estimated to equate to some $13bn per year.
Elaborating further, she said:
“Related economic costs include those linked to
clean-up operations [and] litter removal.” According to Schäli, the cost to
marine industries in the Asia-Pacific region is estimated to be around €1bn
($1.17bn) per year. But even that is not the whole picture: as she explained,
the presence of alien invasive species that live on floating plastic debris can
also result in serious economic losses, though the exact figure is difficult to
quantify.
The fishing industry is
an obvious economic victim in the declining health of our oceans. As well as
obstructing motors, plastic debris can also cause the loss of or damage to
fishing equipment; the result is the need to repair or replace gear, or even
entire vessels. Even the time taken to clean litter from propellers and nets
adds to the cost for fishers.
Then there is the additional loss of revenue that
culminates from fewer fish being caught, and the fact that what is caught
nowadays is often of poorer quality; simply, less healthy oceans inevitably
leads to less healthy fish. Collectively, these factors can weigh heavily on
the industry as a whole, as well as on the individuals whose livelihoods depend
on the seas.
The fishing industry
is an obvious economic victim in the declining health of our oceans
Another vital industry
that is now suffering first hand from marine litter is the tourism industry.
Many popular destinations rely heavily on the lure of pristine beaches,
sparklingly clean waters and beach-fronted hotels. But as many tourists have
witnessed in recent years, the reality has become a far cry from depictions
online and in glossy magazines. Numerous beaches in the Caribbean and Thailand
are now lined with a tangled mess of plastics, putting many off revisiting
these sorry sights.
The associated impact to wildlife only adds to the rebuke
of travellers. Speaking about the economic cost to the tourism industry as a
result of a loss in aesthetic value, Schäli noted: “It was reported that in
South Korea, a single marine litter event caused a revenue loss of about €29m
[$34m] in 2011 compared to 2010, as a result of over 500,000 fewer visitors to
the country.”
While oceans flow around
each continent and are entities we all share, marine plastic pollution can vary
from country to country. Schäli explained: “The degree to which countries
are affected by marine litter [varies depending] on their level of exposure,
but also on their economy and level of income.
Countries that largely depend on
coastal tourism or the fishing industry are more vulnerable to the economic
consequences of marine plastic pollution. Overall, the costs of marine plastic
pollution are not necessarily borne by the polluters. Marine plastic pollution
hence involves equity concerns… In addition, coastal municipalities,
governments and local communities often have to bear high costs for clean-up
operations, awareness-raising activities and education.”
Mega micro
as shocking as these
consequences are, sadly, this is just half the story – and the better half at
that. The most concerning culprit is actually the prevalence of micro plastics
– tiny particles that have either broken up from fragments of plastics and
continue to become smaller over time, or have been purposefully engineered for
consumer products.
The cosmetic industry, for example, has been using ‘micro
beads’ for some time now, promoting their ability to thoroughly scrub skin,
which has made them wildly popular in the process. These micro beads are so
small that they easily flow through filtration systems and end up in waterways
that lead into the sea. Both types of micro plastics are having possibly
irreparable damage to our oceans, particularly due to their volume: the UN
Environment Programmed approximates that as many as 51 trillion micro plastic
particles are present in the oceans.
“I think the micro
plastics are potentially a bigger problem than the macro plastics,” said
Hudson. “With the large stuff, it’s visible and it’s difficult to clean it up,
but we can envisage ways of removing it from the sea.
But with the micro
plastics that can be just a few microns long – they could be smaller than the
diameter of a piece of hair – these are not even visible, so you can’t even see
that the problem is there, and that makes them much more difficult to track in
the marine environment… And the longer we have plastic waste going into the
sea, both large and small, the more micro plastics we’re going to get in the
end.”
All types of sea
creatures are ingesting micro plastics each day, and as they move up the food
chain, these plastics will inevitably end up in the human gut. “The plastics
have materials in them, such as plasticizing agents that may be harmful for
living things and human health… But they also absorb pollutants that are
already in the marine environment. So organic materials, pesticides and
pharmaceuticals that end up in our marine systems will tend to get concentrated
in these tiny particles,”
Hudson said. “We could swallow these particles when,
say, eating seafood. And if they’re very small, they might have the potential to
pass toxic chemicals or maybe carcinogens into our bodies that may disrupt our
hormone systems – we don’t know what the effects of them will be.”
Marine plastic debris
affects multiple industries, our global economy, and it could well be affecting
our health too
With such stories
proliferating in the news and beginning to weigh on the consumer conscience,
the UK banned the use of micro beads in the cosmetic industry in January 2018.
While this move is a massive boon for the environment, the problem doesn’t stop
there, for it’s not just the cosmetic industry that is at fault here – and
neither is it just the UK. In terms of the former, plastic beads have various
industrial uses as well, such as sand blasting and wastewater treatment. As
such, until these areas are also addressed – and in all countries, for that
matter – we are continuing to pump these tiny creations into the sea.
There is also another
plastic pollutant that has unknown consequences, but has received far less
attention in the media: microfibers. These plastic fibers are generated by
washing synthetic garments; each time, thousands of synthetic fibers are
discarded into washing machines, which are then passed into water treatment
systems.
“Our water treatment systems aren’t designed to remove them, so they
can pass straight into our rivers, estuaries and coastal waters, and then
they’re lost in the marine environment in the long-term – with potentially the
consequences we’ve talked about,” said Hudson.
Unfortunately, the problem
doesn’t stop at synthetic clothing: as Hudson explained, plastic fibers also
originate from articles such as fishing nets and plastic ropes, which, once
discarded into the ocean, will continue to break down until they become microfibers,
another invisible enemy with which we must contend.
Boomy McBoomface
Clean-up initiatives,
while well-intention and helpful to an extent, are limited in their
effectiveness. Such operations range from simple beach clean-ups carried out by
willing volunteers to much-researched, more innovative methods. The latter most
famously refers to a scheme thought up by Dutch entrepreneur Boyan Slat,
designed to tackle the Great Pacific Garbage Patch. On May 11, 2017, Slat’s organization,
the Ocean Cleanup, unveiled a new design for the system and its deployment, in
what will be the world’s first attempt to clean up the biggest mass of ocean
plastic on the planet since it was discovered in 1997.
Slat’s device, which is
officially called ‘Boomy McBoomface’, lets the ocean do all the hard work.
Namely, currents funnel plastic debris into solid V-shaped screens, which are
held in place by inflated plastic booms that are anchored to the sea floor. The
next stage of the process will involve loading the plastics onto vessels to be
taken back to land and recycled. It is hoped that Boomy McBoomface will collect
half the mass of the Great Pacific Garbage Patch – which equates to a whopping
40,000 metric tons – within five years.
“It’s very impressive,
but it needs to be done over a long time period, over a very large scale, and
there are also problems with carrying it out. So where we have these
large-scale rafts of plastic in the center of our major oceans, there is marine
life associated with that, so there will be impacts of removing them at the
same time,” Hudson explained.
“We also have the question of what we do with so
much plastic waste when we bring it on shore, so we’ve got to find a way of
dealing with that in with minimal environmental impact. Also, large booms –
that are, again, plastic material – are likely to degrade. So while I think
these are positive ideas, they may have negative aspects to them that we
haven’t foreseen yet.”
Shared accountability
while certain countries
are impacted more than others (see Fig 1 and Fig 2) and some nations are
better equipped to tackle the challenge; marine plastic debris is a problem we
all share. It affects multiple industries and, in turn, our global economy, and
it could well be affecting our health too. Aside from such direct costs, there
are, of course, also those to marine life – causing animals to suffer and die
as a result of our reckless use and disposal of plastics.
The existing problem is
frightening, but the first port of call is to stop it from becoming worse. “We
need to look at our usage of plastics and find ways to use them more wisely,”
said Hudson. This is an important point, for plastic itself is not necessarily
the enemy – it’s our relationship with it that is causing so many problems for
the natural environment.
Hudson shared some suggestions for ways forward with
this controversial, yet essential, material to human life: “We can design ways
that plastic can be reused, remodeled or remade so that it doesn’t become a
waste product, some of which will be lost and some of which will end up in our
natural systems.”
The existing problem
is frightening, but the first port of call is to stop it from becoming worse
Schäli agreed:
“Corporations that are involved in the market of plastic products, especially
consumer products, play an important role in the shaping of our production and
consumption patterns. They influence consumer behavior [through] commercials
and subliminal advertisement in packaging. By their material choices and
product designs, they determine the durability of their products, as well as
their recyclability, biodegradability,
Eco toxicity and susceptibility to end
up in the environment. They further influence consumers’ product choices by
providing or withholding information about the materials they use, including
the additives with potentially toxic or otherwise hazardous effects.
“In order to reduce
their impact, companies should be aware of, and take responsibility for, the
whole life cycle of their products, including disposal… They can redefine their
business models and overcome the phenomenon of planned and perceived
obsolescence, which pushes consumers to constantly renew their belongings by
artificially limiting the service life of the products or suggesting that they
are outdated.”
Businesses can also
reduce packaging quantities and avoid hazardous chemicals, particularly toxic
and bio accumulative substances. Using recyclable or biodegradable materials is
a positive step in the right direction. Schäli explained: “[Corporations] can
engage in research and development in order to find technical solutions to
specific problems in their field of activity, such as textile fibers from
washing machines or micro plastics from tyre wear.
They can make sure that
maritime transport of their goods is safe and that the ships meet international
standards and comply with the regulations, including the prohibition [of
disposing of] plastic wastes at sea. Finally, they can engage in
awareness-raising campaigns, educational activities or coastal clean-ups.”
Governments to have a
vital role to play, as they can establish the necessary legal requirements, as
well as incentives and disincentives, to curb marine plastic pollution. “From
an economic point of view, massive marine plastic pollution may bring us to
rethink our economic models, based on raising consumption levels and a high
throughput of resources, and our throwaway lifestyles,” Schäli noted.
A big
rethink of our disposable attitude is crucial, but as considerable as this
change is, it can start today, with each individual. For now is the time for
action: we can no longer stand by and watch the demise of our oceans – without
them, we too will perish.
Creating change –
significant change – takes time, resolve and money. But the cost if we stand by
and simply continue our current habits will be startlingly worse than it is at
present. Fortunately, individuals, businesses and governments are on the cusp
of the epiphany needed: new regulations are being introduced, reduced packaging
is becoming more common, and there is far greater consumer awareness than ever
before.
But it is not enough. We have to act fast – not for future generations,
but for the present, as this is the time frame that we’re dealing with. On the
one hand, there is the damage to the environment and subsequent marine
fatalities, which should be enough to convince many of this issue’s pertinence.
For those less concerned with such issues, there is the inarguable cost to
numerous industries, thousands of businesses, national economies, as well as
the global economy. Fortunately, the story is not all doom and gloom: awareness
is the first step
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