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Biological Sampling

Fishing and Dredging nets
Agassis Trawl

Application  

Collecting benthic mega-fauna in the deep sea

Agassis trawl
Specification  

Net opening: 3 x 1 m
Mesh size: 1 x 1 cm
Weight dry: 1.500 kg
Max depth: 6.000 m

Closing door mechanism to avoid catching pelagic fish/plankton

Remark  

-

Information   Marc Lavaleye

Beam Trawl

Application  

Bottom trawl to collect fish and epifauna

Beam trawl
Specification  

Width: 3, 2 or 1 m
Mesh size: 5 x 5 mm
Dry weight: 300 kg (3 m beam)

Remark  

This equipment is NOT part of the MRF equipment pool

Information  

Magda Bergman (3m)
Hans Witte (1 & 2m)


Triangular Dredge

Application   Catching bottom material from rough seabeds

Triangular dredge
Specification   Opening:1 m triangle
Mesh size: 2 x 2 cm
Dry weight: 150 kg
Max depth: 6.000 m

3 dredges available

Remark   -

Information  

Marc Lavaleye


Rectangular Midwater Trawl net (RMT-1+8 net)
       
Application   Large pelagic net for collecting fish and plankton files/Fotos website editor/Diensten/MRF/biologische bemonstering/Rectangular midwater trawl net.jpg
Specification  
Separate fish and plankton net
Plankton net:
-          Net opening:     1 m²
-          Mesh size:       300 μm
Fish and nekton net
-          Net opening:     8 m²
-          Mesh size:       5 x 5 mm
Acoustic actuated closing mechanism
Readout via acoustic modem:
-          Temperature
-          Depth
-          Tow speed
-          Net status
Total height: 13 m
Total weight: appr 1.000 kg
Remark    
Information  

Hans Witte

 
Multinet
       
Application   Collecting zoo plankton at 5 different depths  
Specification  
Net opening = 0.25 m²
Several mesh sizes:
-          100 μm
-          200 μm
-          500 μm
Actuating via conductor tow cable
Readout via tow cable
-          Temperature
-          Depth
-          Tow speed
-          Fluorometer (optional)
Max depth:       1,000 m
Height:             2.5 m
Weight:            200 kg
Remark   Conductor tow cable is needed 
Information  

Swier Oosterhuis

 
Hydrobios WP-2 plankton net
       
Application   Collecting of zoo plankton (vertical fishing)  files/Fotos website editor/Diensten/MRF/biologische bemonstering/Hydrobios wp-2 planktonnet.jpg
Specification   Net opening:     diameter 60 cm
Mesh size:       200 μm
Deployed from idle ship
Remark    
Information  

Swier Oosterhuis

 
Isaac-Kid net
       
Application   Pelagic fishing of nekton, plankton and fish eggs  files/Fotos website editor/Diensten/MRF/biologische bemonstering/Isaac Kid net.jpg
Specification  
Net opening:     8.2 m²
Mesh size:       2 x 2 mm/ 5 x 5 mm
Beam width:     2.5 m
Height:             7 m
Remark    
Information  

Hans Witte

 
Deep Digging Dredge 3D
       
Application   Large surface benthic sampler to collect benthic fauna  
Specification  
Slicing area : 20 x 20 cm
Mesh size: 5 x 5 mm
Maximum track length : 100 m
Max operating depth: 200 m
Dimensions: L x W x H = 2.55 x 2.45 x 1.65 m
Empty dry weight: 1.500 kg
Remark  

The Triple-D IS NOT part of the MRF-equipment pool

Special assistance is needed

Information  

Magda Berman

 files/Fotos website editor/Diensten/MRF/biologische bemonstering/3D Dredge 1.jpg
 files/Fotos website editor/Diensten/MRF/biologische bemonstering/3D Dredge 2.jpg
High Pressure Sampler HPS
       
Application   Recovering small volume pressure retaining samples from the deep-sea in inert bottles. Now bacterial respiration and production - not affected by decompression – can be measured.  
Specification  
Small inert bottles: titanium
Several volumes: 50 and 200 ml
Possibility of on-board tracer addition
Water depth down to 6.000 m
6 or 12 bottles per depth
Up to 6 depths per cast
Pressure drop < 5%
Integrated in CTD carousel
Electronical strain gauge and mechanical pressure measurement
Pressure retaining nutrient addition unit
Remark  

 

Information  

Marck Smit

 files/Fotos website editor/Diensten/MRF/biologische bemonstering/HPS.jpg
 High Pressure Sampler in combination with the nutrient injector unit
Fish processing container
       
Application   Sorting and processing of fish  
Specification  
Special purpose 20-foot container, including ventilation and airco.
Hydraulic loading unit.
Separate processing room
Remark  
This container is NOT a MRF-POOL container
Limited use.
Not yet certified.
ID#  
NIOU 000015
Information  

Henk van der Veer

 files/Fotos website editor/Diensten/MRF/biologische bemonstering/Fish container 1.jpg
 files/Fotos website editor/Diensten/MRF/biologische bemonstering/Fish container 2.jpg
Isotope laboratory containers
Isotope container #52
       
Application   Isotope laboratory for C-14, H3 and other radioactive isotopes  
Specification  
Special 20 foot container, including ventilation and aircosystem.
2 x Working table and 2 x fume hood
Remark  
Working in this lab is only permitted with special education (level-5 b) for working with radioactive material.
Supervision of a radiation-expert (level 3) is obligatory.
ID#   NIOU 000052-0
Information  

Santiago Gonzalez

 files/Fotos website editor/Diensten/MRF/biologische bemonstering/isotoop container.jpg
 
Isotope container #4
       
Application   Isotope laboratory for C-14, H3 and other radioactive isotopes  
Specification  
Special 20 foot container, including ventilation and aircosystem.
2 x Working table and 2 x fume hood
Remark  
Working in this lab is only permitted with special education (level-5 b) for working with radioactive material.
Supervision of a radiation-expert (level 3) is obligatory.
ID#   NIOU 000004-1
Information  

Santiago Gonzalez

 files/Fotos website editor/Diensten/MRF/biologische bemonstering/isotoop container 2.jpg