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BIOSOPE – macro-particles 1-      Scientific objectives

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BIOSOPE – macro-particles 1-      Scientific objectives. We are proposing two projects : A - Estimation of the stock of particulate matter (PM) > 100 µm in the studied water column and the relationship between PM’s spatial pattern and the bio-physical data.

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slide1
BIOSOPE – macro-particles

1-     Scientific objectives

We are proposing two projects:

A- Estimation of the stock of particulate matter (PM) > 100 µm in the studied water column and the relationship between PM’s spatial pattern and the bio-physical data.

B- Estimation of the distribution and of the diversity of meso- and macrozooplankton. Relation between their size-dependent distribution and ecosystem state. NET SAMPLING.

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Easy 3 steps dataacquisition

2) Digitize and analyze thepicture in one mouse click

<15 min

3) Collect the sampleback without lostor degradation

1) Pour and distributethe sample in the cell

image digitization
200 µmImage digitization

20% of the whole image

Each picture is 17,500 x 7,000 pixels and contains hundreds of animals

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Size distribution (or temporal evolution) of the different

faunistical groups determined by the ZOOSCAN

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3- Sampling needs

Dig-UVP will be mounted on the CTD (hopefully)

we need a dry lab place for a large desktop

computer, printer and a laptop computer

Zooplankton net sampling – according to the schedule

we need a storage place for the fixed samples

preservative = buffered formaldehyde

Zooscan/OPC – the treatments will be carried out in France

results
Results
  • 15 methods tested and compared
  • Recognition accuracies higher than 80% are difficult to obtain
  • Our new method (dvf, discriminant vector forest) is both efficient and reasonably fast
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