Preface The expedition ARK XIX/3 with the German icebreaking RV ...

250
4,0
]
200
3,0
150
100
2,0
50
1,0
0
0 5 10
t [h]
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Fig. B3.5-2: Oxygen (left) and methane (right) concentrations in teh chamber water of an
incubation on a Beggiatoa mat.
Macrofauna
In addition, the following questions were addressed:
Does the macrofauna at HMMV play an as important role for habitat structure as it
does at „normal“ continental slope settings ?
Does the macrofauna utilize the methane - based food chain (stable isotope
analysis)?
How does the mud/ fluid flow affect the community structure of larger organisms
(Macrofauna) in terms of biomass and diversity ?.
In order to address these questions, the sediments retrieved with the benthic
chambers were sieved (250 µm) and the remaining organisms preserved in 4 %
buffered formaldehyde. In the home laboratory, the samples will be sorted, identified
to the lowest taxonomic level possible. Subsequently, the 13 C signatures of each
single specimen will be determined.
B. 5.4 Video Mosaicking on Håkon Mosby Mud Volcano
Jerosch, K., Vincent, A.G., Schlüter, M.
Introduction
Geo-referenced video mosaicking of the sea floor is useful to many applications. In
our case, we use it to gain an understanding of the oceans’ biological and
sedimentological entities – especially the distribution of different habitats and mud
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