In Dead Water: Merging of climate change with - UNEP

priority zones for reductions in coastal pollutions to prevent a
collapse of the reefs and the associated loss of their functions.
Similarly, it is also evident that the majority of the Worlds most
damaging marine infestations have taken place in areas with
large stresses and diminished resilience due to human activities
(e.g. in heavily harvested fishing grounds with extensive
trawling/dredging). Hence, building resilience and strengthening
the natural buffers of marine (eco)systems has to become
an essential element and consideration in the conservation,
protection and sustainable management/use efforts at all levels,
such as in the creation of system of marine protected areas
spanning from coastal waters to the high seas.
Of critical concern is the current lack of policies and protected
areas covering deeper waters on the continental shelves and the
high seas, including seamounts (Davies et al., 2007; Mossop,
2007). On average, around 70% of the waters under national
jurisdiction (e.g. within the EEZs of coastal states) are deeper
than 200 meters, rising to over 95% in some island states.
However, few countries are aware of their deep-waters and the
need to explore, protect and manage the important services and
resources these areas provide.
Biodiversity hotspots form the basis of the Worlds fisheries, but
have currently no basis in either marine protected areas or in specific
management. It is absolutely crucial that the management of
these hotspots becomes an international environmental priority
with regard to identifying areas where multiple stressors are likely
to leave these water as death zones, lost fisheries and lost recre-
ational and tourist income regions. While there are projections of
collapse in the World’s fisheries alone as a result of over-harvest, it
is far more likely that such collapse may arise even earlier as a result
of the rapid growth of multiple stressors, including climate change,
acting in combination. Unless these interlinked and synergistic
processes are seen and addressed together, the environmental and
socio-economic impacts, particularly for impoverished coastal populations,
may become severe. Building resilience by giving climate
impact hot-spots priority with regard to reducing other stressors
should become focus for future environmental programmes.
The impacts of climate change on the marine environment are
growing rapidly, and are likely to become much severe in coming
decades. The lack of marine information and easy observation by
man as a land-living organism has permitted these and other pressures
to progress much farther than anything we have yet seen or
would have permitted without intervention on land, in spite of the
fact that the oceans are crucial for life on Earth and represent a
significant share of global economies and basic food supply.
Unless other pressures are reduced in some of the primary
fishing grounds, including bottom trawling and pollution, the
impacts may become catastrophic, resulting in wide-spread
death or strongly depleted fishing grounds, with severe impacts
on countries, coastal economies, livelihoods and food supply.
There are currently no international or widespread implemented
national policies in place to ensure that such disaster is prevented.
The urgency and relation to the continental shelves is
critical, given the short time frame, severity and catastrophic
nature of the already emerging impacts.