PRELIMINARY CRUISE REPORT, W0309B R/V WECOMA, 26 September 1 October 2003 GLOBEC NEP Long-Term Observations off Oregon

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1 Submitted by Jane Fleischbein College of Oceanic & Atmospheric Sciences Oregon State University Corvallis, Oregon FILING DATE: 23 October 23 PRELIMINARY CRUISE REPORT, W39B R/V WECOMA, 26 September 1 October 23 GLOBEC NEP Long-Term Observations off Oregon CONTRACT/GRANT NUMBER: NSF Grant OCE-733. PRINCIPAL INVESTIGATORS: Adriana Huyer, Robert L. Smith, P. Michael Kosro, P. A. Wheeler, Jack A. Barth, W. T. Peterson, E. Sherr and B. Sherr PURPOSE: To determine physical, plankton and nutrient/chemical conditions over the continental margin for climate change studies in NE Pacific. In particular, to make CTD and CTD/rosette and net tow stations along 5 lines (off Newport, Heceta Head, Coos Bay, OR. and Crescent City, CA.), to deploy drifters at selected locations on the Newport line, and to make continuous observations of currents using ADCP and of surface-layer temperature, salinity and fluorescence by means of ship s thru-flo system. Figure 1 shows the location of the CTD stations. Table 1 shows the CTD station positions, and Table 2 shows the biochemical sampling depths. SAMPLING PLAN: 1. Use ship s intake continuously for Temperature, Salinity, and Fluorescence 2. Continuous ADCP Profiling (15 khz transducer) for water velocity and backscattering for bioacoustics. 3. Standard CTD Stations using SBE 9/11 plus CTD system for Temperature, Salinity, Fluorescence, Light Transmission, Oxygen, PAR. 4. Rosette sampling: 5 liter bottles for nutrients, chlorophyll, microzooplankton 5. Deploy surface drifters at selected NH-line stations. 6. Vertical net tows: 1/2 meter nets 1 m to surface; Horizontal net tows with 1 m 2 MOCNESS. CRUISE NARRATIVE A brief overview of W39B is presented here. An event log is provided in Table 3, and participating personnel are listed in Table 4. Wecoma departed Newport at 1 PST on 26 September 23. CTD sampling started at NH-1 and continued out to NH-85. A single vertical net tow was done at NH-1, and both MOCNESS and vertical net tows were started at NH-5. In order to maximize darkness for the MOCNESS tows, the CTD stations were done in their usual order out to NH-25, then the ship returned to NH-15 to do a CTD, then MOCNESS tows at NH-15 and NH-25. CTD stations and net tows were then done in order from NH-35 out to NH-85, finishing sampling on the line at 1238 PST on 27 September. Drifters were released at NH-1, 15, 25, 45 and 65. The ship transited to the inshore end of the Crescent City line in order to be at the inshore end in daylight, and began sampling at CR-1 at 621 PST, 28 September, with MOCNESS tows beginning at CR-2. The CR line was finished at 315 PDT, 29 September, and the ship transited to the inshore end of the Five Mile line. 1

2 The ship arrived at FM-1 at 1157 PST on 29 September. Working offshore, the Five Mile line was finished at 211 PST on 29 September with no MOCNESS tows done on this line. The ship arrived at the inshore end of the Heceta Head line at 231 PST on 3 September, and CTD stations along with MOCNESS tows at HH-2, HH-3, HH-4 and HH-5, were completed out to HH-9 at 192 PST 3 September. The ship then returned to HH-5 and at 2147 PST on 3 September, began a series of three deep MOCNESS tows, which were completed at 1145 PST on 1 October. The ship then transited to Newport, arriving at the pier at 1555 PDT, 1 October. Figure 1. CTD stations during W39B, along the Newport, Five Mile, Heceta Head, and Crescent City Hydrographic Lines ,8 1 Newport Heceta Head 27 Coos Bay Latitude ( N) Cape Blanco Rogue River Crescent City Longitude ( W) 2

3 Preliminary Results, W39B During the week before the cruise, winds had been generally favorable for coastal upwelling, except for a 24-hour period on September when the wind was blowing weakly from the south. Moderately strong winds from the north resumed just before the beginning of our cruise, but were soon replaced with generally weak winds. Four sections were sampled: the NH, CR, FM, and HH lines. Mocness sampling on the FM line and all sampling on the RR-line was omitted to allow time for a series of four deep MOCNESS casts at HH-5 at the request of W. T. Peterson and his zooplankton sampling team. All four of the hydrographic sections showed the effects of persistent seasonal upwelling: isopleths of temperature, salinity, density and dissolved oxygen all bend upward from depths of 5-15 m at the offshore end of the section to intersect the surface. Off Newport, the coastal upwelling front is strong and narrow, and the 33. isohaline and 25. isopycnal intersect the sea surface near the midshelf. Off Coos Bay, this intersection lies over the outer shelf, and off Crescent City it lies >2 km beyond the shelf-break. Downwarping of deeper isopycnals (>26.5 kg/m 3 ) toward the continental margin suggests the presence of poleward flow over the upper slope, and this is confirmed (?? CHECK) by current measurements from the ship-borne ADCP. On all sections, the permanent halocline is still cool compared to data from 1999 and 21. T-S diagrams suggest subduction of warm, high-salinity inshore surface water on the CR-line. Inshore waters were surprisingly clear; chlorophyll and fluorescence values were much lower than they had been in July 23. The attached zooplankton report was provided by Dr. Wm. Peterson, and the attached microzoonplankton report was provided by Drs. Evelyn and Barry Sherr. Table 4. Names, affiliations, and responsibilities of scientific personnel participating on W39B. Adriana Huyer Chief Scientist OSU CTD Robert L. Smith Co-Chief Scientist OSU CTD Jane Fleischbein Technician OSU CTD Joe Jennings Technician OSU CTD, Oxygen Margaret Sparrow Technician OSU CTD Julie Arrington Technician OSU nuts, chl Jennifer Jarrell-Wetz Technician OSU nuts, chl Jennifer Harman Technician OSU nuts, chl Kerry Mamone Technician OSU nuts, chl Carlos López Technician OSU microzooplankton Aaron Hartz Graduate Student OSU microzooplankton Leah Feinberg Technician HMSC zooplankton Carolyn Tracy Shaw Technician HMSC zooplankton Richard Roberts Technician HMSC zooplankton Travis Johnson Scientist ORI zooplankton Linda Fayler Technician OSU martec Daryl Swensen Technician OSU martec 3

4 17 NH-85 W39B Newport Hydro Line September NH NH-65 NH-35 NH-45 Temperature NH-2 NH-15 NH-1 NH-5 NH-3 NH-1 NH Salinity

5 Temperature 18 W39B Crescent City Line CR September 23 CR CR-9a CR-8 CR Salinity CR-4 CR-2 CR-1 CR-6 CR-3 CR-5

6 17 W39B Five Mile Line 29-3 September FM Temperature FM-8 FM-7 FM-6 FM-1 FM-3 FM-4 FM Salinity

7 17 W39B Heceta Head Line 3 September - 1 October HH-9 HH-7 HH-5 Temperature HH-3 HH-4 HH-1 HH Salinity

8 Halocline Temperatures off Newport Salinity Sept

9 W39B Wind Speed and Direction 36 Wind Direction ( T) September - October 23 (GMT)... Port... Starboard Wind Speed (kts) September - October 23 (GMT)

10 Table 1. CTD station positions during W39B, and sampling at each station (C: Bio/Chem bottle sampling, N:halfmeter vertical net tows, M:Mocness, O:Oxygen samples, D:Drifter, Z:Microzooplankton bottle sampling). Station Distance Lat. Long. Bottom Cast Sampling Name No. from shore N W Depth Depth Type (km) (m) (db) NH N,Z NH Z NH C,Z,N,M NH N,Z,D NH C,Z,N,M,D NH N,Z NH C,Z,N,M,D NH Z,M NH C,Z,N,M NH C,Z,N,M,D NH Z NH C,Z,N,D NH C,Z,O2 CR C,Z,N CR C,Z,N,M CR C,Z,N,M CR C,Z,N,M CR C,Z,N CR C,Z,N,M CR C,Z,N CR Z CR-9a C,Z,N CR Z,O2 CR C,Z,N FM Z,N FM C,Z,N FM C,Z,N FM C,Z,N FM C,Z FM C,Z,N,O2 FM C,Z,N FM C,Z,N HH C,Z,N HH C,Z,N,M HH C,Z,N,M HH C,Z,N,M HH C,Z,N,M HH C,Z,O2 HH C,Z 1

11 Table 2: Actual sample depths and types of subsamples for biochemical sampling during the September 3 LTOP GLOBEC cruise. Station, Depth, Sample Collection Depths (m) Type of Sample Collected Dist. From Shore NH-5, 6m, 9km 53, 5, 4, 3, 25, 2, 15, 1, 5, 1 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths) NH-15, 94m, 28km 86, 7, 61, 51, 4, 3, 2, 1, 5, 2 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths) NH-25, 294m, 46km 21, 175, 15, 1, 7, 5, 4, 3, 21, 1, 1 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths except 21 and 175 m) NH-35, 447m, 65km 428, 38, 15, 1, 7, 5, 4, 3, 2, 1, 2 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths except 428 and 38 m) NH-45, 696m, 83km 68, 665, 5, 15, 1, 7, 5, 4, 3, 2, 1, 2 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths except 68, 665, and 5 m) NH-65, 2858m, 121km 15, 15, 1, 7, 5, 4, 3, 2, 1, 5, 2 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths except 15 m) NH-85, 2884m, 157km 15, 85, 62, 142, 1, 7, 5, 4, 3, 2, 1, 2 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths except 15, 85 and 62 m) HH-1, 55m, 5km 48, 4, 3, 25, 2, 15, 1, 5, 2 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths) HH-2, 122m, 21km 115, 1, 7, 6, 5, 4, 3, 2, 1, 5, 2 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths) HH-3, 155m, 37km 145, 1, 69, 6, 5, 4, 3, 19, 1,1 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths) HH-4, 111m, 53km 94, 7, 6, 5, 4, 3, 2, 1, 5, 2 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths) HH-5, 935m, 69km 8, 5, 2, 151, 1, 7, 5, 4, 3, 2, 1, 1 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths) (except 8, 5, and 2 m) HH-7, 1751m, 85km 16, 57, 25, 15, 1, 7, 5, 4, 3, 2, 1, 1 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths except 16, 57, and 25) 11

12 FM-3, 67m, 9km 62, 55, 5, 4, 3, 25, 2, 15, 1, 5, 2 FM-4, 88m, 15km 8, 7, 65, 61, 5, 4, 3, 2, 1, 5, 2 FM-5, 159m, 22km 15, 1, 7, 61, 5, 4, 3, 2, 1, 1 FM-7, 311m, 36km 3, 25, 215, 15, 1, 7, 5, 4, 3, 2, 1, 2 FM-8, 179m, 16, 7, 25, 15, 1, 7, 5, 49km 4, 3, 2, 1, 1 FM-9, 1659m, 15, 955, 15, 1, 7, 5, 45, 4, 63km 3, 2, 1, 2 TOC (all depths), Nutrients, TN (all depths), both Chl, POC/PON (all depths) TOC (surface), Nutrients, TN (surface), both Chl, POC/PON (all depths) TOC (surface), Nutrients, TN (surface), both Chl, POC/PON (all depths) TOC (all depths), Nutrients, TN (all depths) both Chl, POC/PON (all depths except 3, 25, and 215 m) TOC (surface), Nutrients, TN (surface) both Chl, POC/PON (all depths except 16, 7 and 25m) TOC (all depths), Nutrients, TN (all depths) both Chl, POC/PON (all depths except 15 and 955 m) CR-1, 41m, 8km 35, 3, 25, 2, 15, 1, 5, 2 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths) CR-3, 136m, 24km 13, 11, 1, 7, 6, 5, 4, 3, 2, 1, 5, 2 TOC (surface), Nutrients, TN (all depths), both Chl and POC/PON (all depths) CR-4, 53m, 33km 451, 35, 15, 1, 7, 5, 4, 3, 2, 14, 1, 2 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths except 451 and 35 m) CR-5, 661m, 41km 65, 5, 27, 15, 1, 7, 5, 4, 3, 2, 1, 1 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths except 65, 5,and 27 m) CR-7, 833m, 68km 76, 5, 42, 15, 1, 7, 5, 4, 3, 2, 1, 1 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths except 76, 5, and 42 m) CR-9a, 395m, 99km 15, 845, 765, 15, 1, 7, 5, 43, 3, 2, 1, 2 TOC (all depths), Nutrients, TN (all depths), both Chl and POC/PON (all depths except 13, 845, and 765m) CR-11, 3323m, 148km 14, 94, 77, 15, 1, 7, 5, 4, 3, 2, 1, 2 TOC (surface), Nutrients, TN (surface), both Chl and POC/PON (all depths except 14, 94 and 77m) 12

13 Subsample Replicates TOC 3 Nutrients 2 TN 3 Chl 2 POC/PON 1 13

14 Table 3. R/V WECOMA Cruise W39B Start End Sta. Sta. Latitude Longitude Bottom Atmos Wind Wind Event Event ID (UT) Time Time No. Name (deg) (min) (deg) (min) Depth Press Dir. Speed (UT) (UT) (m) (mbar) (deg T) (kts) 1657 Start echosounder 26-Sep 17 Depart Newport 175 Start DAS 171 air calibration of transmissometer 1718 Start ADCP 1745 Start flo-thru 1745 Start flo-thru fluorometer NH CTD with mzp WE Flo-thru Wetstar fluor. H2O flow started vertical net tow, 27m WE NH CTD with mzp WE NH CTD with biochem, mzp WE vertical net tow, 55 m WE nd vertical net tow, 55 m WE Mocness deployed WE Mocness aboard WE NH CTD with mzp WE vertical net tow, 75 m WE drifter deployed WE NH CTD with biochem, mzp WE vertical net tow, 1 m WE drifter deployed WE NH CTD with mzp WE vertical net tow, 1 m WE Secchi disk WE Sep NH CTD with biochem, mzp WE vertical net tow, 1 m WE drifter deployed WE NH CTD with mzp WE Mocness deployed WE Mocness aboard WE NH Mocness deployed WE Mocness aboard WE NH CTD with biochem, mzp WE vertical net tow, 1 m WE Mocness deployed WE Mocness aboard WE NH CTD with biochem, mzp WE vertical net tow, 1 m WE

15 Start End Sta. Sta. Latitude Longitude Bottom Atmos Wind Wind Event Event ID (UT) Time Time No. Name (deg) (min) (deg) (min) Depth Press Dir. Speed (UT) (UT) (m) (mbar) (deg T) (kts) Mocness deployed WE Mocness aboard WE Drifter deployed WE NH CTD with mzp WE NH CTD with biochem, mzp WE vertical net tow, 1 m WE nd vertical net tow, 1 m WE drifter deployed WE NH CTD with biochem, mzp, oxygen WE begin transit to CR-Line 23 cleaned flo-thru filters 28-Sep 33 air calibration of transmissometer CR CTD with biochem, mzp WE vertical net tow, 35 m WE CR CTD with mzp WE vertical net tow, 55 m WE nd vertical net tow, 55 m WE Mocness deployed WE Mocness aboard WE CR CTD with biochem, mzp WE vertical net tow, 1m WE Mocness deployed WE cleaned flo-thru filters 1718 completed cleaning Turner fluorometer Mocness recovered WE CR CTD with biochem, mzp WE vertical net tow, 1 m WE Mocness deployed WE Mocness aboard WE CR CTD with biochem, mzp WE CR vertical net tow, 1 m WE CR CTD with mzp WE Mocness deployed WE Mocness aboard WE Sep CR CTD with biochem, mzp WE vertical net tow, 1 m WE CR CTD with mzp WE CR-9a CTD with biochem, mzp WE vertical net tow, 1m WE nd vertical net tow, 1m WE CR CTD with mzp, oxygen WE

16 Start End Sta. Sta. Latitude Longitude Bottom Atmos Wind Wind Event Event ID (UT) Time Time No. Name (deg) (min) (deg) (min) Depth Press Dir. Speed (UT) (UT) (m) (mbar) (deg T) (kts) CR vertical net tow,1m WE CR CTD with biochem, mzp WE begin transit to FM line WE cleaned flo-thru filters 1429 completed cleaning Turner fluorometer FM CTD with mzp WE vertical net tow, 3 m WE ` air calibration of transmissometer FM CTD with biochem, mzp WE vertical net tow, 6m WE FM vertical net tow, 8m WE FM CTD with biochem, mzp WE FM vertical net tow, 1 m WE FM CTD with biochem, mzp WE FM CTD with mzp (& aborted oxygen) WE FM CTD with oxygen, biochem, mzp WE vertical net tow, 1 m WE Sep FM vertical net tow, 1 m WE FM CTD with biochem, mzp WE FM CTD with biochem, mzp WE vertical net tow, 1 m WE begin transit to HH HH airs 2 CTD with biochem, mzp WE vertical net tow, 5m WE HH CTD with biochem, mzp WE vertical net tow, 1 m WE Mocness deployed WE Mocness aboard WE HH var 3 CTD with biochem, mzp WE vertical net tow, 1 m WE Mocness deployed WE Mocness aboard WE HH var 3-Feb CTD with biochem, mzp WE vertical net tow, 1 m WE Mocness deployed WE cleaned flo-thru filters cleaned Turner fluorometer Mocness aboard WE air calibration of transmissometer HH vertical net tow, 1 m WE Mocness deployed WE

17 Start End Sta. Sta. Latitude Longitude Bottom Atmos Wind Wind Event Event ID (UT) Time Time No. Name (deg) (min) (deg) (min) Depth Press Dir. Speed (UT) (UT) (m) (mbar) (deg T) (kts) Mocness aboard WE HH CTD with biochem, mzp WE deep daytime Mocness deployed WE deep daytime Mocness aboard WE HH CTD with oxygen, biochem, mzp WE Oct HH CTD with biochem, mzp WE air calibration of transmissometer 347 HH deep nighttime Mocness deployed WE deep nighttime Mocness aboard WE nd deep nighttime Mocness deployed WE nd deep nighttime Mocness aboard WE nd deep daytime Mocness deployed WE cleaned flo-thru filters nd deep daytime Mocness aboard WE Mocness pressure comparison cast WE begin transit to Newport 222 shut down flow through system 222 shut down DAS 222 shut down ADCP 2212 shut down echosounder 2255 arrive at pier in Newport 17

18 Temperature, 26 Sept. - 1 Oct Station No , Station No Pressure (dbars) NH N HH 44 N Pressure (dbars) CR N Longitude FM N Longitude

19 Salinity, 26 Sept. - 1 Oct. 23 Pressure (dbars) Station No , Station No NH N HH 44 N Pressure (dbars) CR N FM N Longitude Longitude

20 Sigma-theta, 26 Sept. - 1 Oct. 23 Pressure (dbars) Station No , Station No NH N HH 44 N Pressure (dbars) CR N FM N Longitude Longitude

21 % Light Transmission, 26 Sept. - 1 Oct. 23 Pressure (dbars) Station No , Station No NH N 4 89 HH 44 N Pressure (dbars) CR N 4 FM N Longitude Longitude

22 Fluorescence Voltage, 26 Sept. - 1 Oct Station No , Station No Pressure (dbars) NH N 4 HH 44 N Pressure (dbars) CR N 4 FM N Longitude Longitude

23 Oxygen, 26 Sept. - 1 Oct Station No , Station No Pressure (dbars) NH N HH 44 N Pressure (dbars) CR N Longitude FM N Longitude

24 46 Drifter data from Sep to Oct 2 23 (dates on land indicate last transmission from failed drifters) (Courtesy of Jack Barth, Oregon State University) Columbia R 46 Tillamook B latitude ( N) Newport Coos Bay longitude ( W) 43

25 Microzooplankton Sampling (Submitted by Carlos López and Drs. E. and B. Sherr, Oregon State University) September, 23 GLOBEC CRUISE W39B: Primary goal: MICROZOOPLANKTON ABUNDANCE, BIOMASS, AND GENERAL TAXONOMIC COMPOSITION Table 5: Actual sample depths for collection of microzooplankton samples for bacterial counts (Flow Cytometry) and ciliate counts (Inverted Scope Microscopy) during W34A. Station Sample Collection Depths (m) NH-1 2, 19, 25 NH-3 2, 2, 45 NH-5 1, 5, 1, 2, 3, 53 NH-1 2, 4, 68 NH-15 2, 5, 1, 2, 4, 61, 86 NH-25 1, 1, 21, 3, 7, 1, 15, 21 NH-15 5, 5, 79 NH-35 2, 1, 2, 3, 4, 5, 7, 1 NH-45 2, 1, 2, 3, 4, 5, 7, 1 NH-55 1, 1, 25, 6 NH-65 2, 5, 1, 2, 3, 4, 5, 7 NH-85 2, 1, 2, 3, 4, 5, 7, 1 CR-1 2, 5, 1, 15, 2, 25, 3, 35 CR-2 2, 1, 2, 4, 6 CR-3 2, 5, 1, 2, 3, 5, 7, 11 CR-4 2, 1, 14, 2, 3, 4, 7, 1 CR-5 1, 1, 2, 3, 4, 5, 7, 1 CR-6 1, 1, 3, 5, 7 CR-7 1, 1, 2, 3, 4, 5, 7, 1 CR-8 2, 2, 4, 6, 79, 1 CR-9a 2, 1, 2, 3, 4, 5, 7, 1 CR-11 2, 1, 2, 3, 4, 5, 7, 1 25

26 Table 5 cont. FM-1 5, 2, 29 FM-3 2, 5, 1, 15, 2, 3, 5, 62 FM-4 2, 5, 1, 2, 3, 5, 65, 8 FM-5 1, 1, 2, 3, 4, 5, 61, 7 FM-6 1, 1, 3, 5, 75, 11 FM-7 2, 1, 2, 3, 4, 5, 7, 1 FM-8 1, 1, 2, 3, 4, 5, 7, 1 FM-9 2, 1, 2, 3, 4, 5, 7, 1 HH-1 1, 5, 1, 15, 2, 3, 4, 48 HH-2 2, 5, 1, 2, 3, 4, 6, 1 HH-3 1, 1, 19, 3, 4, 5, 69, 1 HH-4 2, 5, 1, 2, 3, 4, 5, 7 HH-5 1, 1, 2, 3, 4, 5, 7, 1 HH-7 1, 1, 2, 3, 4, 5, 7, 1 HH-9 1, 1, 2, 3, 4, 5, 7, 1 26

27 W39B GLOBEC LTOP Zooplankton Report Submitted by Mitch Vance and Dr. William Peterson, OSU and NOAA. MOCNESS DESCRIPTIONS: Taxa listed by order of abundance. NH-5 13:12 h (Local Time) Water Depth = 61 m 5-2 m Jellies, copepods, Limacina, Pleurobrachia 2 - m Jellies, copepods, Pleurobrachia NH-15 2:7 h Water Depth = 92 m 8 5 Jellies, copepods, amphipods 5 35 Jellies, copepods 35 2 Jellies, copepods 2 1 Jellies, copepods 1 Jellies, copepods, amphipods NH-25 21:43 h Water Depth = 297 m Chaetognaths, sergestids, Jellies, Muggiaea, copepods 25 2 Jellies, sergestids, Muggiaea, copepods, chaetognaths 2 15 Jellies, sergestids, copepods, chaetognaths 15 1 Jellies, sergestids, euphausiids 1 5 Jellies, sergestids, euphausiids, copepods 5 35 Sergestids, jellies, euphausiids 35 2 Euphausiids, jellies, sergestids, 2 Jellies, euphausiids, copepods, myctophids, squid NH-35 :36 h Water Depth = 446 m Jellies, Muggiaea, shrimp, euphausiids, chaetognaths, copepods 25 2 Shrimp, chaetognaths, Muggiaea, euphausiids, myctophids, amphipods 2 15 Jellies, shrimp, euphausiids, chaetognaths, copepods, squid 15 1 Jellies, myctophids, shrimp, Pleurobrachia, euphausiids, radiolarians 1 5 Shrimp, euphausiids, Jellies, myctophids, copepods, amphipods, Limacina 5 35 Jellies, shrimp, euphausiids, myctophids, megalope 35 2 Jellies, euphausiids, amphipods, copepods, megalope, flatfish larvae 2 Jellies, euphausiids, Clione, amphipods, copepod NH-45 4:32 h Water Depth = 79 m Jellies, Muggiaea, euphs, chaetognaths, squid, fish larvae, beroe, octopus 25 2 Muggiaea, Beroe, chaetognaths, euphausiids, copepods, Limacina 2 15 Muggiaea, jellies, shrimp, chaetognaths, Limacina, copepods 15 1 Myctophids, Shrimp, jellies, Muggiaea, euphausiids 1 5 Limacina, shrimp, copepods, amphipods, euphausiids, jellies 27

28 5 35 Euphausiids, jellies 35 2 Jellies, euphausiids, 2 Jellies, euphausiids, Limacina CR-2 7:57 h Water Depth = 68 m 55 2 Pleurobrachia, amphipods, copepods, furcilia 2 Pleurobrachia, Beroe, amphipods, copepods, Limacina CR-3 9:31 h Water Depth = 136 m 12 1 Pleurobrachia, Limacina, copepods, amphipods, chaetognaths, squid 1 5 Pleurobrachia, amphipods, copepods, megalope, Limacina, squid, fish 5 2 Pleurobrachia, copepods, Beroe, Limacina, amphipods 2 Pleurobrachia, copepods, Beroe, euphausiids CR-4 11:57 h Water Depth = 59 m 35 3 Shrimp, myctophids, copepods, euphausiids 3 25 Shrimp, myctophids, fish larvae, amphipods 25 2 Euphausiids, Pleurobrachia, Muggiaea, copepods, myctophids, furcilia 2 15 Euphausiids, copepods, Limacina, fish larvae 15 1 Copepods, Limacina, fish larvae 1 5 Limacina, copepods, euphausiids, fish larvae 5 3 Euphausiids, Beroe, jellies, Pleuro, Limacina, copepods, chaetogs, crab 3 2 Copepods, Limacina, amphipods, phytoplankton 2 Pleurobrachia, phytoplankton, copepods, Beroe, fish larvae CR-6 15:54 h Water Depth = 78 m 35 3 Euphausiids, chaetognaths, copepods, Limacina, jellies, shrimp, fish 3 25 Shrimp, Limacina, chaetogs, copepods, jellies, polycheates, euphausiids 25 2 Copepods, Muggiaea, Pleurobrachia, chaetognaths, amphipods 2 15 Euphausiids, chaetognaths, Limacina, copepods, amphipods 15 1 Euphausiids, copepods, chaetognaths, jellies, Pleurobrachia 1 5 Jellies, Limacina, chaetognaths, copepods, Pleurobrachia 5 2 Copepods, Pleurobrachia, doliolids 2 Phytoplankton, Beroe, Pleurobrachia, copepods, juve euphs (and eggs) HH-2 4:34 h Water Depth = 122 m 1 5 Jellies, Pleurobrachia, euphausiids, copepods, chaetognaths 5 35 Jellies, Pleurobrachia, euphausiids, copepods, phytoplankton 35 2 Jellies, Pleurobrachia, phytoplankton, euphausiids, fish larvae 2 Phytoplankton, jellies, euphausiids, copepods HH h Water Depth = 154 m Jellies, Pleurobrachia, euphausiids, copepods, chaetognaths 1 5 Jellies, phytoplankton, euphausiids, copepods 5 2 Jellies, phytoplankton, Pleurobrachia, euphausiids, amphipods 2 Jellies, phytoplankton, copepods 28

29 HH-4 8:34 h Water Depth = 111 m 9 5 Euphausiids phytoplankton, jellies, chaetognaths, copepods 5 2 Jellies, phytoplankton 2 Jellies, phytoplankton, copepods HH-5 1:18 h Water Depth = 932 m 35 3 Jellies, Beroe, shrimp, squat lobster, phytoplankton 3 25 Myctophids, jellies, Pleuro, euphs, shrimp, chaetogs, squat lobster 25 2 Jellies, euphausiids, shrimp, myctophids 2 15 Jellies, euphausiids, megalope Jellies, euphausiids, amphipods 12 5 Jellies, copepods, chaetognaths, euphausiids 5 2 Jellies, amphipods 2 Phytoplankton, jellies, euphausiids HH-5d1 12:31 h Water Depth = 945 m Jellies, shrimp, copepods 7 5 Jellies, copepods, fish, chaetogs, shrimp, euphs, amphipods, myctophids 5 4 Jellies, fish, amphipods, copepods, chaetognaths 4 3 Jellies, myctophids, shrimp, copepods, squid 3 2 Jellies, shrimp, euphausiids, myctophids, squid 2 1 Jellies, euphausiids, copepods, amphipods 1 5 Jellies, copepods, chaetognaths 5 2 Jellies, copepods, myctophids 2 Jellies, amphipods, copepods HH-5d2 2:53 h Water Depth = 94 m Radiolarian, jellies, shrimp, fish larvae 7 5 Radiolarian, jellies, shrimp, fish larvae 5 4 Jellies, amphipods, copepods, fish larvae 4 3 Jellies, Beroe, myctophids, shrimp, copepods, chaetognaths, fish larvae 3 2 Jellies, shrimp, myctophids, euphausiids, squid 2 1 Jellies, myctophids, euphausiids, shrimp copepods, chaetognaths 1 5 Jellies, euphausiids, shrimp, chaetognaths, myctophid 5 2 Euphausiids, jellies, Pleurobrachia, myctophid, shrimp 2 Euphausiids, Pleurobrachia, amphipods, copepods, chaetognaths HH-5d3 2:19 h Water Depth = 926 m Copepods, jellies, shrimp, fish larvae 7 5 Jellies, copepods, myctophids, shrimp, chaetognaths 5 4 Jellies, myctophids, shrimp, chaetognaths, amphipods, fish larvae, Beroe 4 3 Jellies, Beroe fish, copepods, chaetognaths, squid 3 2 Jellies, euphausiids, shrimp, myctophids 29

30 2 1 Jellies, myctophids, euphs, shrimp, chaetognaths, amphipods, shrimp 1 5 Jellies, euphausiids, myctophids, squid, amphipods, megalope, copepods 5 2 Euphausiids, jellies, shrimp, copepods 2 Jellies, euphausiids, copepods HH-5d4 8:7 h Water Depth = 951 m 9 7 Jellies, amphipods, copepods, fish larvae, Atolla 7 5 Jellies, fish larvae, amphipods, phytoplankton, giant red shrimp 5 4 Jellies, fish larvae, amphipods, Limacina 4 3 Jellies, Muggiaea, copes, shrimp, squid, fish, myctophids, squat lobster 3 2 Myctophids, jellies, shrimp, copepods, squat lobster, squid 2 1 Jellies, euphausiids 1 5 Jellies, euphausiids 5 2 Jellies, copepods 2 Jellies, copepods, squid, squat lobster Other zooplankton sampling: Vertical Plankton Tows (VPTs.5 m diameter, 2 um mesh) were completed at stations NH-1, 5, 1, 15, 2, 25, 35, 45, and 65, CR-1, 2, 3, 4, 6, 7, 9a, and 11, FM-1, 3, 4, 5, 7, 8, and 9, HH-1, 2, 3, 4, and 5. The final four MOCNESS tows were plunged to depths greater than 9 meters in an effort to quantify chaetognath vertical distributions for visiting scientist Travis Johnson. No live euphausiids experiments were conducted during this cruise. 3