Ehrich, S.

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Bundesforschungsanstaltfür Fischerei Institut für Seefischerei     Palmaille 9, 22767 Hamburg        Tel. 38905 179      Fax 38905 263     18.09.2007    Az.: Dr.Ehr./2574 „WALTHER HERWIG III" Cruise 302 REPORT19.07. – 17.08.2007 PersonnelName    Institution 1. Dr. Siegfried Ehrich    ISH-BFA  2. Herr Ingo Wilhelms    ISH-BFA   3. Herr Jens Edinger    ISH-BFA  4. Frau Petra Jantschik    ISH-BFA   5. Herr Sascha Bednarz    ISH-BFA   6. Dr. Ingrid Kröncke    Forsch. Senckenberg   7. Frau Sabine Schückel    Forsch. Senckenberg   8. Frau Ulrike Schückel    Forsch. Senckenberg   9. Herr Hermann Neumann    Forsch. Senckenberg 10. Herr Paul Kotterba    IFH-Uni Hamburg  11. Frau Verena Peschko    FTZ Westküste (first leg) 12. Frau Henriette Dries    FTZ Westküste (first leg) 13. Herr Daniel Bode    FTZ Westküste (second leg) 14. Herr Moritz Mercker    FTZ Westküste (second leg) 15. Dr. Ursula Monnerjahn          BLE (guest, only last week) Objectives1. To participate in the ICES co-ordinated 'International Bottom Trawl Survey' in the North Sea, quarter 3 2. Biological monitoring of the fish fauna in 6 small areas (boxes) 3. Distribution of temperature, salinity and nutrients in the area of investigation 4. Monitoring of the benthic epifauna in the boxes and in the German Bight 5. Monitoring of seabirds Narrative (Fig. 1)W. Herwig III left Bremerhaven the 19th of July 2007. The scientific programme started next morning at ICES-rectangle 38F7. During this and the following day another 7 rectangles were monitored by taking samples of fish, water (nutrients, temperature, salinity) and benthic epi-fauna (Tab. 1). The vessel than worked in the boxes C, L and M (only 2 days in Box M instead of 3 days). After a 3 days break in Bergen (Norway) the standard programme was continued in boxes D and B (3 days each). After one day fishing in 4 ICES-rectangles of the German Bight, 3 days in Box A and another 11 rectangles the scientific program ended the 15th of August. The 'W. Herwig III' docked at Bremerhaven the 16th of August 2007.Tab. 1: Activities (stations) during the cruise area GOV-hauls CTD nutrients 2m-beamtrawl v.Veen grab Box A 21 15 9 9 18Box B 20 15 6 9 9Box C 21 15 9 9 9Box D 21 15 6 9 18Box L 17 15 10 10 20Box M 11 8 3 5 10ICES-rectangles 23 23 23 23 23total 134 106 66 74 107Results (Tab. 1 and Figs. 2-7)A total of 134 half an hour and valid hauls were made using the GOV trawl equipped with the standard ground gear, of which 111 hauls were carried out in the boxes to monitor changes in species compositions and 23 hauls in different ICES-rectangles as part of the IBTS Q3 survey, mainly within the German Bight. At 106 stations salinity, temperature and at 66 stations nutrients were measured. Epibenthos was sampled by a 2m beam-trawl at 74 stations and 107 grab samples were taken to investigate the benthic infauna and the sediment.  The preliminary number at age data for the recruiting year-classes of the commercial important species and the catch data were submitted to the co-ordinator of the IBTS-Q3 survey and ICES resp. to make these data available to the ICES assessment working groups within due time.  Fig. 1 shows the area of investigation. The mean species compositions in the 6 boxes and the variability within the time periods are shown in Figs.2 to 7.  Dr. S. Ehrich     Fig. 1: „Walther Herwig III“. Cruise no. 302. Cruise track, area of investigation and boxes  02004006008001000120014001600180020001987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007yearmean catch rate (kg/30min)othersspratscadmackerelherringwhitingcodplaicedabBox A      Fig. 2: Box A: German Bight: Main species composition (kg/30min)      from 1987 to 2007 (summer) 0200400600800100012001400160018002000198719881989199019911992199319941995199619971998199920002001200220032004200520062007yearmean catch rate (kg/30min)othersspratmackerelherringwhitinghaddockcoddabBox BFig. 3: Box B. English coast. Main species composition (kg/30min)           from 1987 to 2007 (summer) 050100150200250300350400450198719881989199019911992199319941995199619971998199920002001200220032004200520062007yearmean catch rate (kg/30min)othersherringwhitinghaddockcoddabBox CFig. 4: Box C. Danish coast. Main species composition (kg/30min)           from 1986 to 2007 (summer) 05001000150020002500300035001986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2001 2002 2003 2004 2005 2006 2007yearmean catch rate (kg/30min)othersmackerelherringNorway poutwhitinghaddockcodlemon soledabBox DFig. 5: Box D. Scottish coast. Main species composition (kg/30min)           from 1986 to 2007 (summer) 0.0200.0400.0600.0800.01000.01200.01400.01600.01800.02000.01999 2000 2001 2002 2003 2004 2005 2006 2007yearmean catch rate (kg/30min)othersherringmackerelsaithewhitinghaddockBox L Fig. 6: Box L. Norwegian coast. Main species composition (kg/30min)         in 1999 and from 2001 to 2007 (summer) 0.00200.00400.00600.00800.001000.001200.001400.001999 2000 2001 2002 2003 2004 2005 2006 2007yearmean catch rate (kg/30min)othersNorway poutherringmackerelsaithewhitinghaddockcodBox M Fig. 7: Box M. Norwegian coast. Main species composition (kg/30min)         in 1999 and from 2001 to 2007 (summer) Page 1  CRUISE SUMMARY REPORT   FOR COLLATIMG CENTRE USE  Centre:       Ref. No.:                      Is data exchange                                       restricted               Yes       In part      No  SHIP  enter the full name and international radio call sign of the ship from which the data were collected, and indicate the type of ship, for              example, research ship; ship of opportunity, naval survey vessel; etc.  Name: "WALTHER HERWIG III"             Call Sign: DBFR  Type of ship: Research Vessel   CRUISE NO. / NAME WH 302   CRUISE PERIOD          start          19/07/2007     to     17/08/2007             end                                                     (set sail)            day/ month/ year                day/ month/ year     (return to port)  PORT OF DEPARTURE (enter name and country) Bremerhaven, Germany  PORT OF RETURN (enter name and country) Bremerhaven, Germany  RESPONSIBLE LABORATORY    enter name and address of the laboratory responsible for co-ordinating the scientific planning of                                                                        the cruise  Name: Bundesforschungsanstalt für Fischerei, Institut für Seefischerei Address: Palmaille 9, 22767 Hamburg Country: Germany  CHIEF SCIENTIST(S)      enter name and laboratory of the person(s) in charge of the scientific work (chief of mission) during the cruise.  Dr. Siegfried Ehrich, Bundesforschungsanstalt für Fischerei, Institut für Seefischerei e-mail: siegfried.ehrich@ish.bfa-fisch.de   OBJECTIVES AND BRIEF NARRATIVE OF CRUISE   enter sufficient information about the purpose and nature of the  cruise so                                                                                                                 as to provide the context in which the report data were collected.  A) International Bottom Trawl Survey (IBTS, 3. Quarter) for fish stocks estimates German Small-scale Bottom Trawl Survey (GSBTS) to monitor the fish fauna  B) Biological monitoring in small areas C) Physical oceanography D) Chemical oceanography E) Monitoring of zoobenthos F) Registration of seabirds at sea, food uptake experiments     PROJECT (IF APPLICABLE)  if the cruise is designated as part of a larger scale co-operative project (or expedition), then enter the name of the project, and of organisation responsible for co-ordinating the project.  Project name: IBTS – 3. Quarter  Co-ordinating body: ICES   enter the unique number, name     or acronym assigned to the cruise (or cruise leg, if appropriate). Page 2  PRINCIPAL INVESTIGATORS: Enter the name and address of the Principal Investigators responsible for the data collected on the cruise and who may be contacted for further information about the data. (The letter assigned below against each Principal Investigator is used on pages 2 and 3, under the column heading ‘PI‘, to identify the data sets for which he/she is responsible)  A. S. Ehrich, Bundesforschungsanstalt für Fischerei, Institut für Seefischerei, Hamburg B. S. Ehrich, Bundesforschungsanstalt für Fischerei, Institut für Seefischerei, Hamburg C. G. Wegner, Bundesforschungsanstalt für Fischerei, Institut für Seefischerei, Hamburg D. U. Brockmann, ILB-University Hamburg E. J. Kröncke, Senckenberg-Forschungsinstitut, Wilhelmshaven  F. S. Garthe, FTZ Büsum    MOORINGS, BOTTOM MOUNTED GEAR AND DRIFTING SYSTEMS  This section should be used for reporting moorings, bottom mounted gear and drifting systems (both surface and deep) deployed and/or recovered during the cruise. Separate entries should be made for each location (only deployment positions need be given for drifting systems). This section  may also be used to report data collected at fixed locations which are returned to routinely in order to construct ‘long time series‘.   APPROXIMATE POSITION  DESCRIPTION  LATITUDE  LONGITUDE  PI  See top of page.  deg  min  N/S  deg  min   E/W  DATA TYPE  enter code(s) from list on cover page.  Identify, as appropriate, the nature of the data and of the instrumentation/sampling gear and list the parameters measured. Include any supplementary information that may be appropriate, e. g. vertical or horizontal profiles, depth horizons, continuous recording or discrete samples, etc. For samples taken for later analysis on shore, an indication should be given of analysis planned, i.e. the purpose for which the samples were taken.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Please continue on separate sheet if necessary Page 3  SUMMARY OF MEASUREMENTS AND SAMPLES TAKEN  Except for the data already described on page 2 under ‘Moorings, Bottom Mounted Gear and Drifting Systems‘, this section should include a summary of all data collected on the cruise, whether they be measurements (e.g. temperature, salinity values) or samples (e.g. cores, net hauls).  Separate entries should be made for each distinct and coherent set of measurements or samples. Different modes of data collection (e.g. vertical profiles as opposed to underway measurements) should be clearly distinguished, as should measurements/sampling techniques that imply distinctly different accuracy’s or spatial/temporal resolutions. Thus, for example, separate entries would be created for i) BT drops, ii) water bottle stations, iii) CTD casts, iv) towed CTD, v) towed undulating CTD profiler, vi) surface water intake measurements, etc.  Each data set entry should start on a new line – it’s description may extend over several lines if necessary.  NO,    UNITS  :  for each data set, enter the estimated amount of data collected expressed in terms of the number of ‘stations‘; miles‘ of track; ’days‘ of                            recording; ‘cores‘ taken; net ‘hauls‘; balloon ‘ascents‘; or whatever unit is most appropriate to the data. The amount should be entered                            under ‘NO‘ and the counting unit should be identified in plain text under ‘UNITS‘.   DESCRIPTION  PI  see page 2  NO  see above  UNITS  see above  DATA TYPE  Enter code(s) from list on cover page  Identify, as appropriate, the nature of the data and of the instrumentation/sampling gear and list the parameters measured. Include any supplementary information that may be appropriate, e. g. vertical or horizontal profiles, depth horizons, continuous recording or discrete samples, etc. For samples taken for later analysis on shore, an indication should be given of analysis planned, i.e. the purpose for which the samples were taken.  A and B  134  hauls  B 19  Gear: GOV-bottom trawl, species composition  C  106  stations  H 10  Temperature and salinity distribution.  D  66  stations  H22-28  Distribution of nutrients  E 74 107  stations stations  B 18  Distribution of epibenthos and infauna, 2 m beam trawl; Sediment and infauna,  v. Veen grab  F  10 ?  Transects stations   B25   Recording Seabirds at sea  Conducting feeding experiments                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Please continue on separate sheet if necessary Page 4  TRACK CHART: You are strongly encouraged to submit, with the completed                              report, an annotated track chart illustrating the route followed and                              the points where measurements were taken.   Insert a tick(a) in this box if a track chart is supplied  GENERAL OCEAN AREA(S): Enter the names of the oceans and/or seas in which data were collected during the cruise – please use commonly recognised names (see, for example, International Hydrographic Bureau Special Publication No. 23, ‘Limits of Oceans and Seas‘).  Central and Northern North Sea and 6 specific areas  SPECIFIC AREAS: If the cruise activities were concentrated in a specific area(s) of an ocean or sea, then enter a description of the area(s). Such descriptions may include references to local geographic areas, to sea floor features, or to geographic coordinates.  Boxes: A: 54° 17’N – 54° 27’N; 06° 58’E – 07° 15’E             B: 55° 16’N – 55° 26’N; 00° 18’W – 00° 00’W             C: 56° 33’N – 56° 43’N; 05° 10’E – 05° 28’E             D: 57º 48’N - 57º 58’N; 00º44’W - 01º 04’W             L:  58º 40’N - 58º 50’N; 02º 23’E - 02º 43’E             M: 60º 17’N - 60º 27’N; 02º 22’E - 02º 42’E  

„Walther Herwig III" Cruise 302

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„Walther Herwig III" Cruise 302

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