1. JR177 Discovery 2010 Summer Cruise

2. Big Ideas To classify pelagic communities and foodwebs within different environments and across seasons within the Scotia Sea To collect body condition indices and other parameters to examine life-cycle flexibility across the Scotia Sea To examine physical variability as a forcing factor in pelagic community variability

3. Core objectives of JR177 To carry out a core sampling strategy that:- (i)Allows comparison across the range of Scotia Sea environments (ii)Allows comparisons across seasons (iii) Linkage between different trophic levels (primary, secondary, higher) 1 To determine different scales of variability in physical and biological parameters (large scale - water masses, mesoscale - around stations, small scale – krill swarms) 2 To characterise the main drivers of variability (i)Physical characterisation of core transect – calibrated against satellite data (ii)Macro- and micro-nutrient characterisation (including iron) 3 Determine flux within the context of pelagic food web processes 4

4. ERS altimeter tracks over Scotia Sea

5. SEAWifS JR161 – track achieved

6. JR161 - Sea Surface Temperature

7. JR177 48 days for core science (46 when taking mob/demob into account) (this includes 3 days for DIMES) Core box time (+ calibration) is split out into an additional cruise = JR185 JR185 will be done before Xmas, JR177 after Xmas

8. JR177 – external requests Iron work (NOC – AFI CGS) – 2 berths Evgeny Pakhomov (UBC) – 1– jellies and fish Dorothee Bakker (UEA) – 1 berth Ezio Rosato (Leicester – Full AFI) – 1 berth Full AFI AFI - CGS Collaborations

9. JR177 Provisional Personnel Nutrients, phytoplankton, iron Korb, Whitehouse, Gordon, Bibby, Neilsdottir MesozooplantkonWard, Hirst, Shreeve, Tarling Macrozooplantkon/krillFielding, Watkins, Atkinson, Pakhomov NektonCollins, Stowasser OceanographyVenables, AN Other (a), Jones BiochemistryPond Data managementCunningham Moorings and sampling gearEnderlein Higher predators/whalesAN Other (b), AN Other (c’) Total 24 personnel (to fit into 11 single cabins; 4 double cabins, 1-2 PSO cabin) Krill AFIGaten

10. Proposed JR177 track 12 stations occupied for ~2.5d each (extra time for 2 mooring stations) 7 stations at same positions as JR161 5 stations to be positioned responsively

11. Time 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 24:00 Provisional Station Activities Acoustic and UOR survey Day 1 RMT Target fishing

12. TimeDay 1Day 2Day 3Day 4 01:00MOCNESSRMT 25 RMT 25 target fishing 02:000 – 1000 mTarget fishingDepth stratified 03:00 LHPR1000 – 400 mMooring 04:00Tow Fish0 – 1000m400 – 0 mDeployment 05:00FRRF darkness 120 m 06:00 FRRF 120 m 07:00CTD – 10 m off sea bed 08:00 09:00CTD 140 m 10:00 RMT 25 11:00Go Flo Depth stratified day 12:00 13:00FRRF – daylight 120 m 14:00CTD – HPLC 2000 m 15:00 Acoustic Survey 16:00 CTD 140 mMOCNESS 0 – 1000mLHPR - daylight 17:00Bongo 3 * 400 m 18:00Mini bongo 1 * 400 m 19:00RMT 25Bongo 3 * 400 m 20:00Target fishing 21:00 RMT 25 22:00 Target fishing 23:00 RMT 25 24:00 Depth stratified night 4 Day Process Station Activities