Site selection and carrying capacity in Mediterranean ... - FAO Sipam
Site selection and carrying capacity in Mediterranean ... - FAO Sipam
Site selection and carrying capacity in Mediterranean ... - FAO Sipam
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Table 3 – Aspects of environmental monitor<strong>in</strong>g of aquaculture activities<br />
ASPECT qualitative<br />
assessment of<br />
organic<br />
enrichment,<br />
<strong>in</strong>organic<br />
debris<br />
ANALYSIS Benthic<br />
photograph,<br />
video, diver<br />
observation<br />
TIME<br />
REQUIRED<br />
Water quality Sediment quality<br />
0.5 - 1 day per<br />
transect<br />
EXPERTISE SCUBA divers<br />
tra<strong>in</strong>ed <strong>in</strong><br />
lay<strong>in</strong>g transect<br />
l<strong>in</strong>es <strong>and</strong><br />
underwater<br />
videography<br />
INFRA-<br />
STRUCTURE<br />
Submersible<br />
video, digital<br />
video camera,<br />
underwater<br />
light<strong>in</strong>g,<br />
view<strong>in</strong>g<br />
equipment<br />
physical clarity Organic /<br />
<strong>in</strong>organic<br />
nutrients<br />
CTD cast Secchi disk<br />
depth<br />
1 day per site,<br />
Familiarity with<br />
equip-ment;<br />
calibration of<br />
CTD sensors;<br />
data pro-cess<strong>in</strong>g<br />
<strong>and</strong><br />
<strong>in</strong>terpretation<br />
boat with GPS<br />
& w<strong>in</strong>ch<br />
several hours<br />
per site<br />
m<strong>in</strong>imal<br />
boat with<br />
GPS;<br />
Secchi disk,<br />
rope<br />
various<br />
Water<br />
sampl<strong>in</strong>g – ½<br />
day<br />
Sample<br />
process<strong>in</strong>g – 1<br />
week<br />
basic watersampl<strong>in</strong>g;<br />
extensive <strong>in</strong><br />
mar<strong>in</strong>e<br />
analytical<br />
chemistry<br />
boat with GPS<br />
& w<strong>in</strong>ch;<br />
Nisk<strong>in</strong> bottles;<br />
analytical<br />
chemistry<br />
laboratory with<br />
auto-analyzer<br />
43 GFCM:XXXV/2011/Dma.9<br />
Algal growth All sediment<br />
appearance,<br />
composition<br />
<strong>and</strong> colour<br />
with depth<br />
Algal growth<br />
bioassay<br />
Set up - 1 day;<br />
process<strong>in</strong>g – 2<br />
days<br />
Dismantl<strong>in</strong>g -<br />
1 day<br />
m<strong>in</strong>imal for set<br />
up &<br />
dismantl<strong>in</strong>g;<br />
experience<br />
with<br />
chlorophyll<br />
extraction <strong>and</strong><br />
fluorometric<br />
measurement<br />
boat with GPS,<br />
moor<strong>in</strong>g <strong>and</strong><br />
floatation<br />
system,<br />
diffusion<br />
chambers<br />
CORE<br />
EXTRACTIO<br />
N<br />
Diver taken<br />
cores – 1-4 hrs;<br />
box cores –<br />
0.5-1 day<br />
SCUBA divers<br />
experienced <strong>in</strong><br />
tak<strong>in</strong>g<br />
sediment cores<br />
of different<br />
sizes, Veen<br />
grab or boxcores<br />
h<strong>and</strong>-held core<br />
samplers or<br />
box cores<br />
43<br />
Visual<br />
<strong>in</strong>spection of<br />
cores<br />
Visual<br />
<strong>in</strong>spection of<br />
cores: ca<br />
10m<strong>in</strong>/core<br />
Oxygenation of<br />
mar<strong>in</strong>e<br />
sediments<br />
Organic Matter Total<br />
Phosphorous<br />
Sediment<br />
Gra<strong>in</strong> Size<br />
Benthic<br />
Community<br />
REDOX Modified LOI Various Granulometry Various<br />
REDOX<br />
analysis:<br />
15 m<strong>in</strong> per<br />
sediment core<br />
m<strong>in</strong>imal;<br />
experience<br />
with<br />
calibration of<br />
electrode<br />
redox potential<br />
electrodes,<br />
plastic<br />
sediment<br />
corers with<br />
holes <strong>in</strong> sides<br />
to <strong>in</strong>sert redox<br />
electrodes<br />
core process<strong>in</strong>g<br />
– 15m<strong>in</strong>/core;<br />
core dry<strong>in</strong>g,<br />
weigh<strong>in</strong>g <strong>and</strong><br />
multiple<br />
combustions –<br />
4 days/3 cores.<br />
basic technical<br />
skills –<br />
weigh<strong>in</strong>g,<br />
record<strong>in</strong>g<br />
digital balance,<br />
dry<strong>in</strong>g oven,<br />
muffle furnace<br />
core subsampl<strong>in</strong>g<br />
–<br />
15m<strong>in</strong>/core;<br />
process<strong>in</strong>g<br />
samples - 20 hrs<br />
for <strong>in</strong>organic<br />
<strong>and</strong> total P<br />
analytical<br />
chemistry skills<br />
analytical<br />
chemistry lab,<br />
mortar & pestle,<br />
sieve, digital<br />
balance, dry<strong>in</strong>g<br />
oven, muffle<br />
furnace,<br />
spectrophotomet<br />
after sediment<br />
slic<strong>in</strong>g <strong>and</strong><br />
dry<strong>in</strong>g 2 – 4 h<br />
per core<br />
siev<strong>in</strong>g<br />
(simple);<br />
operation of<br />
laser<br />
diffraction<br />
system<br />
(tra<strong>in</strong>ed<br />
personnel<br />
sediment<br />
granulometry<br />
equipment<br />
(dry<strong>in</strong>g oven,<br />
sieves, sieve<br />
shaker, digital<br />
balances)<br />
<strong>and</strong>/or access<br />
sampl<strong>in</strong>g –, 1 –<br />
2 days per site;<br />
sort<strong>in</strong>g <strong>and</strong><br />
identify<strong>in</strong>g –<br />
several months<br />
per site<br />
sampl<strong>in</strong>g-<br />
basic; sort<strong>in</strong>g<br />
<strong>and</strong> identify<strong>in</strong>g<br />
- moderate<br />
experience<br />
with benthic<br />
fauna;<br />
taxonomic<br />
work to species<br />
level – very<br />
high level<br />
siev<strong>in</strong>g &<br />
wash<strong>in</strong>g gear;<br />
dissect<strong>in</strong>g<br />
microscopes<br />
<strong>and</strong> keys for<br />
identification
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