Mussels growing on depth charges Preliminary results from a WW2 wreck DAIMON 2nd project meeting Goslar 19102016 Aino Ahvo Finnish Environment Institute ID: 572309
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Slide1
WP 3.1 & 2.5: Mussels growing on depth charges
Preliminary results from a WW2 wreck
DAIMON 2nd project meeting Goslar 19/10/2016
Aino
Ahvo
,
Finnish
Environment InstituteSlide2
2
Helsinki 30 km
w
reck
M451
reference
area
army
baseSlide3
3Sampling from WW2 wreck M451
Participating in the clearance
operation by the Finnish Navy
mussels
growing
on top
of
depth
charges
, sampling by navy diversdissecting samples
for chemical and biological analysesSlide4
Condition Index
relating soft tissue dry
weight to shell length
4Slide5
5
Lysosomal membrane stability
a
b
bSlide6
Lipofuscin
Undegradeable cell debris
caused by oxidative stress, visual
scoring
6
a
b
bSlide7
7
Further analyses
Chemical (TNT/other
explosives
?)
oxidative
stress
biomarkers
?
other TNT/explosive-specific
biomarkers?Slide8
8WP 3.1: Plans for 2017 –
caging study in the Gulf of FinlandFinding
a suitable area with large amount of munitions
-
preferably
sea
mines
etc. (
containing
TNT).Close collaboration with the
Finnish Navy Caging of blue
mussels collected from a clean site
close to the sea mines as well as to
clean reference area
Duration of the experiment 2.5-3 months (May – August)Slide9
9WP 3.1: Caging study
Deployment of the
cages
in
May
.
Metal
coupons
for
corrosion
studies
to be attached (negotiated separately with PNA
)?Passive samplers?Slide10
10WP 3.1: Caging studySlide11
11WP 3.1: Caging study
O
D
A
S
300 kgSlide12
12WP 3.1: Caging study
Lifting
the
cages
in August and
dissection
.Slide13
13WP 3.1: Caging study
TNT in sediment
TNT in water
Bioavailable
TNT in biota
Stress responses detected in the laboratory
Blue mussel samples
Fish samples (Baltic cod)Slide14
Thank you!Aino Ahvo, MSc.researcher
Finnish Environment Instituteaino.ahvo@environment.fi+358295251837