Sustainable diets and biodiversity

(Marcin) #1
are abundant in most aquatic foods, and fish can
play an extremely important role as a very good
source of essential nutrients, particularly as a
source of micronutrients, where other animal
source foods are lacking.
More than one billion people, within 58 developing
and low-income food-deficit countries, depend on
fish as the primary source of animal protein. Fish is
a unique food that could be used to address almost
all the major malnutrition disorders. Beyond provid-
ing food, aquaculture and fisheries also strengthen
people’s capacity to exercise their right to food
through employment, community development,
generating income and accumulating other assets.

Sustainability of aquatic resources as food
The global production of marine capture fisheries
was about 80 million tonnes in 2008. The stocks of
the top ten species account for about 30 percent of
the world marine capture fisheries production, most
of them fully exploited (Figure 1). The widespread
failure to manage fishery resources properly, has
resulted in a situation where some 32 % of stocks
are overexploited, and 53% of the stocks are fully
exploited, leaving only 15% of the stocks with a po-
tential for increased capture and biodiversity in
foods based on capture fisheries. There is general
scientific agreement that significantly more cannot
be produced from wild fish populations (FAO, 2011a).

Figure 1.Global trends in the state of world marine stocks since
1974 (FAO, 2011a).

However, total global fish production has continued
to rise, amounting to 14 2 million tonnes in 2008. The
balance is made up by production from aquaculture,
which amounted to 52.5 million tonnes in 2008, con-
tributing 46 percent to the total foodfish production.
Although there is no association between resource
sustainability and health, the issue of sustainability
must be considered if proven health benefits lead to
an increased demand for seafood. With the known
wide range of benefits from seafood consumption, it
is pertinent to consider whether increased production
is possible.
The increasing demand for fish will mainly be provided
by increased aquaculture production. However,
the increasing demand for fisheries products is also
encouraging a better use of available, but limited,
resources. FAO is encouraging technology and
knowledge that could help the fisheries industry and
fish processors to reduce waste and increase the
amount of fish ending up as food.
Post-harvest losses of high quality fish are also a
challenge due to poor handling of fish and fisheries
products. In some cases 20 percent of fish landed
are lost before reaching the consumer due to poor
hygiene facilities and handling. Poor handling also
causes big physical losses of fish, as well as economic
losses due to lower quality and value of the end
product. As demand for fisheries products will
increase in the future and acknowledging the
important role of the fisheries sector in food and
nutrition security, the economy and livelihoods of
many vulnerable populations, sharing knowledge on
handling and storing of a perishable product such
as fish should be given high priority.
Increased focus on improving the utilization of fish
species of low value, such as the Peruvian anchoveta
should also be encouraged. The anchoveta has
traditionally been processed into fish oil and fishmeal,
but is a good example of an excellent fish with a
potential for direct human consumption; very high
nutritional value, and affordable for most people. Although
challenges such as cultural acceptance and conflict

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Percentage of
stocks assessed

Underexploited + Moderately exploited
Full exploited
Overexploited + Depleted + Recovering
74 76 78 80 82 84 86 88 90 92 94 96 98 00 02 04 06 0 8

60
50
40
30
20
10
0
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