CRUISE SUMMARY REPORT/ROSCOP FORMS

 CRUISE NAME:MTPII-MATER/M2BN-AUG97 IDENTIFIER: GN36199704604
 Ship Name: R/V AEGAEO              Call Sign: SXYY 
 Ship Type: Research Vessel
 PROJECT: MASTIII-MTPII-MATER
 Scientific Coordinating Body: NCMR, Athens, Greece 

Chiefs Scientist(s) (3 max, for further information, see further with ROSCOP parameters :

Other Participating Bodies : (Scientist Name, Institute Name, Country)

Objectives:

This was the second cruise of the project MATER (MAss Transfer and Ecosystem Response) that concentrated on the study of the benthic environment at the selected stations of the South and North Aegean Sea.

The main tasks involved:

- collecting sediment samples with an 0.25 m² USNEL Boxcorer and a Bowers/Connely multicorer from 3 stations in the South (MSB1, 2, 3) and 7 stations in the North Aegean Sea (MNB1, 2, 3, 4, 6, 8, 9) for determining the:

1. benthic macrofauna, meiofauna and foraminifera community structure
2. microbial density and potential microbial activity
3. nutrient content concentration in the near bottom water
4. TOC, TON, Chloroplastic pigments, ATP and LOC concentrations
5. CO₂ production
6. temperature and Eh of the sediment
7. biomixing, bioturbation and sedimentation processes
8. processes associated with the early diagenesis of organic matter

- deploying the NIOZ's benthic lander, BOLAS, to obtain in situ SCOC (sediment community oxygen consumption) measurements.

Cruise Period   Start : 25/08/97      End : 08/09/97

Port of Departure : Heraklion, Crete, Greece     Port of Return : Heraklion, Crete, Greece

SEA/OCEAN : Coded Region(list below) : Med. Eastern Basin      Local Name: Aegean Sea

Geographical Limits

Description of the field observations :

1. Benthic macrofauna, meiofauna and foraminifera community structure
2. Benthic microbial density and activity
3. Sediment and bottom water chemistry
4. In-situ sediment community oxygen consumption (SCOC) measurements
5. Processes associated with early diagenesis of organic matter

DISCIPLINES

CODE	DISCIPLINES
HC	MARINE BIOLOGY & FISHERIES
HC	CHEMICAL OCEANOGRAPHY (Hydrology)
GG	GEOLOGY & GEOPHYSICS
HP	PHYSICAL OCEANOGRAPHY (Hydrology)

IOC MEDITERRANEAN REGIONS

IOC REGION	CODE
AEGEAN SEA	D33

CODE	PARAMETER	MEASUREMENT DESCRIPTION	Nb Obs.	Scientist
B02	Phytoplankton pigments	a. Sediment cores were sliced in 5 depth layers (0-3, 3-10, 10-20, 20-40, 40-60 mm) and stored at -20oC for later analyses of Chla and phaeopigment concentrations	12	A
		b. Sediment surface slices were deep frozen in liquid nitrogen, freeze dried and stored at -80oC for later phytopigment analyses by means of HPLC	9	B
		c. Water samples from the surface, the 80m chlorophyll maximum and near the bottom were filtered, deep frozen in liquid nitrogen, freeze dried and stored at -80oC for later phytopigment analyses by means of HPLC	10	B
B16	Benthic bacteria/micro-organisms	Sediment cores were sliced in 3 depth layers (0-2, 2-4, 4-6 cm), processed and analysed immediately on board to determine proteolytic and respiration rates. Samples were also preserved for later determination of bacterial abundance	7	F
B18	Zoobenthos	a. Sediment cores were sliced in 4 depth layers (0-1, 1-2, 2-4, 4-6 cm) and preserved for later analysis of the benthic meiofauna	9	G
		b. Sediment cores were sliced in 3 depth layers (0-5, 5-10, 10-20 cm), sieved over a 0.5mm mesh and preserved in formalin for later analysis of the benthic macrofauna	12	A
		c. Sediment cores were sliced in 1 cm slices down to 6 or 15 cm and preserved for later analysis of benthic foraminifera	11	E
B72	Biochemical meas.	Sediment cores were sliced in 5 depth layers (0-3, 3-10, 10-20, 20-40, 40-60 mm) and stored at -20oC for later analyses of LOM (carbohydrates, lipids, proteins)	13	G
B73	Sediment traps	Sediment traps PPS3 were attached onto the BOLAS lander and deployed for approximately 17-44 hours	4	B
B90	Other biological/fisheries meas.	a.Sediment cores were sliced into 5 depth layers (0-3, 3-10, 10-20, 20-40, 40-60 mm) and used for the analysis of ATP	13	A
		b.Sediment cores were used to determine the nutrient release rate through incubation experiments	8	B
		c. In situ measurements of O2 were conducted with the benthic lander (BOLAS) in order to determine the Sediment Community Oxygen Consumption (SCOC)	4	B
		d. Sediment cores were used for determining the C-mineralization rates through CO2 production measurements	9	E
G04	Core soft bottom	A BOWERS/CONNELY multicorer (a) and a 0.1m2 USNEL boxcorer (b) were used to collect sediment samples for the parameters: B02 (a,b), B16, B18 (a,b,c), B72, G90(a,b), H22, H24, H25, H26, H75	8(a) 13(b)	A
G08	Bottom photography	Video recordings of the sea floor were obtained from a camera mounted onto the benthic lander (BOLAS)	4	B
G90	Other geological/geophysical meas.	a. Direct measurements of the thickness of the oxidized layer were undertaken in order to distinguish between regions of sedimentation and accumulation	11	LSGM
		b. Sediment cores were opened, photographed, subsampled and stored for later measurements of grain size and determination of minerals	13	D
H09	Water bottle stations	Water samples were collected from various depths with Niskin water bottles during CTD casts for the analyses of chloroplastic pigments (B02c)	10	B
H10	CTD stations	CTD casts were conducted for hydrographic recordings and collection of water samples	14	C
H22	Phosphate	Near bottom water was collected from the multi-corer and stored at -20oC until further analyses of phosphate	8	A
H24	Nitrate	Near bottom water was collected from the multi-corer and stored at -20oC until further analyses of nitrate	8	A
H25	Nitrite	Near bottom water was collected from the multi-corer and stored at -20oC until further analyses of nitrite	8	A
H26	Silicate	Near bottom water was collected from the multi-corer and stored at -20oC until further analyses of silicate	8	A
H75	Total - N	Sediment cores were sliced in 5 depth layers (0-3, 3-10, 10-20, 20-40, 40-60 mm) and stored at -20oC for later analyses of TON and TOC	11	A
H76	Ammonia	Near bottom water was collected from the multi-corer and stored at -20oC until further analyses of ammonia	8	A

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