(c) Artificial lighting of the fish farm units poses a major impact on marine
mammals, birds and bats and fish and turtles.
(d) Escape of fish from the fish cages and the introduction of alien species pose a
major impact for plankton, benthos, fish, turtles and potentially the entire
ecosystem.
The concept is planned to include a floating closed cycle OTEC plant. Due to
heavy structure and autonomy, the OTEC plant is considered as a satellite. OTEC
produces constant base load electricity in a turbo generator that is driven by the
evaporation/expansion of the working fluid ammonia in a closed circuit. There is
significant potential to combine OTEC with aquaculture. The OTEC plant is
expected to have moderate effects on the environment, although the stressor heat
energy may have an effect on water temperature and the pelagic flora and fauna.
Physical stressors owing to potential changes in sea water salinity and water column
stratification may also affect the pelagic flora and fauna.
Leisure facilities include accommodation, a restaurant, a sky observation lounge, a
garden and a store. Solid and liquid wastes coming from the daily operations of the
leisure modules on board of a central unit will most likely have a major effect on
marine environment (water, sediment quality, benthos, fish, turtles, marine mammals
and humans). To reduce or avoid potential negative impacts of the TROPOS elements
on the environment, appropriate mitigation measures are required, in particular for
impacts expected to be large or critical for the ecosystem and its receptors.
4.3 Methodology
4.3.1 The Methodology for Assessing Social Acceptance
An integrated multi-use offshore development is a future possibility for the island.
However the spatial overlapping with traditional fishing practices and other usages
Table 4.1 Components and services of the Green & Blue platform scenario off Liuqiu Island
(Chen et al. 2015)
Modules
Components/services
Modules
Fish aquaculture Fish aquaculture parts of the 30 satellite units
Fish aquaculture module (on CU,
operation and control)
Algae
aquaculture
Algae aquaculture parts of the 30 satellite units
Algae aquaculture module (on CU,
operation and control)
Bio-refinery (on CU)
Storage (on CU)
Processing plant
(CU)
Storage
Processing, packaging, freezing
OTEC plant
Energy (electricity) generation and
clean, deepwater supply
Accommodation Hotels for tourists and related services Accommodation for aquaculture
staff
4 Social Acceptance and Socio-economic Effects of Multi-use Offshore. . .
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