EN319 CRUISE REPORT

21 February - 4 March, 1999

 

Acknowledgments: We wish to thank the crew of the R/V Endeavor for their professionalism and friendly support. Their cooperation and assistance made the success of this cruise possible.

This cruise was sponsored by the National Science Foundation and prepared by Ted Durbin, Jeff Runge, Melissa Wagner, and Barbara Niehoff.


TABLE OF CONTENTS

Introduction............................................................................3

Cruise Narrative.....................................................................4

Hydrography..........................................................................5

Chlorophyll and Nutrients....................................................13

Zooplankton Abundance.......................................................15

Egg Production Studies.........................................................25

List of Scientific Personnal....................................................26

Event Log...............................................................................27

 

INTRODUCTION

The objective of the cruise was to determine egg production and growth rates, and physiological condition and mortality rates of the dominant copepod species on Georges Bank including the target species Calanus finmarchicus and Pseudocalanus. The general plan was to deploy ARGOS-tracked drogues on the NE Peak of Georges Bank and follow these for 8-10 days. Each day we planned to carry out a CTD and bottle cast (for chlorophyll a determinations) next to the drifter and sample the zooplankton with a plankton pump (5 replicate profiles) and a bongo net (3 profiles). At the same time we planned to carry out molting rate and egg laying rates on the Calanus finmarchicus. From these measurements we planned to determine stage specific mortality rates of Calanus using the population surface method and the vertical life table approach. At the beginning of the drifter deployment and every other day subsequently we planned to carry out a 1 m2 MOCNESS tow to collect potential invertebrate zooplankton predators. Prior to deployment of the drifters we planned to carry out several CTD and bongo transects in an east-west direction between the 60 and 200m depth contours on the NE Peak. Information from these transects was intended to enable us to determine a suitable location for deployment of the drifters.

Following the drifter tracking study we planned to carry out a study of the abundance, stage and depth-distribution of Calanus, as well as determining egg laying rates and physiological condition, along transects in the Gulf of Maine. The objective was to determine the reproductive status of the overwintering Calanus population in the Gulf of Maine prior to the occurrence of the spring phytoplankton bloom. The first transect was planned to begin on the NE Peak and extend north to Maine Coastal waters adjacent to Mt. Desert Island. The second was to extend west across the Gulf to Cape Cod Bay. At each station we planned to deploy the CTD and collect water for chlorophyll a, carry out MOCNESS and pump deployments, and collect live animals for experiments. Stations were to be approximately 30 miles apart.

Because of extremely bad weather throughout the cruise with a succession of storms passing through we were unable to achieve most of these objectives. The cruise was initially delayed several days because of weather. When we reached the NE Peak of Georges Bank to begin the initial transects conditions were too rough to work. A major storm was forecast so we left to shelter in Portland, Maine. At this stage there was insufficient time to complete the planned drifter study. On returning from Portland we carried out a transect across the Gulf of Maine from Maine coastal waters at the mouth of Penobscot bay, across Jordan and Georges Basins, and onto Georges Bank, sampling zooplankton with a pump and Mocness, carrying out egg laying experiments, collecting animals for RNA/DNA measurements, and measuring growth and molting rates. This transect was also interrupted by weather. At the end of the transect we planned to carry out several diel studies of Calanus egg laying on Georges Bank. Bad weather prevented even these limited objectives so we returned to Narragansett.

Although most of our initial objectives were not met, we considered that the N-S Gulf of Maine transect provided useful and new information for this region during the winter.

 

CRUISE NARRATIVE

We left GSO on Sunday, 21 February at 09:15 after a two delay due to bad weather. We proceeded out through Buzzards Bay, Cape Cod Canal and to our station on the NE Peak of Georges Bank, arriving at the station at 08:00 am on the 22nd. Shortly before we arrived winds picked up to over 30 kts, gusting up to 40, and after readying the CTD for deployment we decided that conditions were too severe to start work. We began jogging slowly. Winds were predicted to remain between 30-40 for the rest of the day and we didnt expect to begin work until early Tuesday.

On Tuesday morning winds were still blowing around 30 kt and air temperatures were -7.0 C. However, winds were slowly decreasing so we turned around (during the storm we had jogged about 25 miles N of the station) and steamed back to the station (St 1), arriving there around 13:30. We carried out a CTD cast collecting water for chlorophyll. We then carried out two live tows with a 156 m, 1 m diameter net towed between the surface and near the bottom (47 m). Conditions during the casts were marginal and it would not have been possible to carry out either a 1 m2 MOCNESS tow or a plankton pump cast. At the end of the station the Captain came down with news of more bad weather predicted for the Gulf of Maine and Georges Bank (storm level winds) beginning Wednesday night and wanted to break off work and head into shelter. Portland, Maine was decided upon since we felt it would provide an opportunity to carry out a transect from N to S in the Gulf of Maine as we returned to Georges Bank.

The live tows, meanwhile, were immediately sorted for Calanus and Pseudocalanus adult females and Calanus older stage copepodites. Groups of Calanus were preserved for RNA/DNA measurements. Additional females were sorted for egg laying measurements (Runge/Joly) and to lay eggs for the production of nauplii which would be used when we return to the bank in feeding experiments (Sandrin). Calanus was quite sparse at the station. Other copepods present included Metridia, Pseudocalanus, Oithona and Centropages.

We arrived in Portland on 24 February and departed at 06:00 on the 27th and headed out to the first station of our N-S Gulf of Maine transect off Manincus Island at the mouth of Penobscot Bay. The general approach at each station was to carry out a CTD and collect samples for nutrients and chlorophyll a, do a 1 m2 MOCNESS and a pump cast, and then collect live animals for sorting for egg laying experiments with Calanus and Pseudocalanus. At each station a 75 m mesh net tow was preserved for egg ratio estimates of egg production by Pseudocalanus. Subsamples were taken from surface and deep MOC nets for RNA/DNA and C & N measurement on older stager copepodites and adult females of Calanus. At every other station Calanus nauplii were sorted for RNA/DNA.

The weather was great for two days and we completed two stations (St 2 and 3) the first day and then broke of for the night so that we could collect live animals during daylight at St 4. At St 2 we were in the lower salinity Maine Coastal Current. Calanus was present, both adults and nauplii, as well as Metridia and two spp of Pseudocalanus. At St 3 there were fewer Pseudocalanus and Calanus, but large numbers of Metridia. St 4 was started first thing in the morning and we completed 5 and 6 during the day. There was much large Rhizosolenia at these stations and appeared to be fewer Calanus nauplii. By evening the wind was picking up and since it was predicted to blow 30-40 kts overnight and the next morning we stowed everything on deck away. The next morning (March 1st) was warm with the wind between 20 and 30 but the seas were large and confused. It rained off an on. By midday the wind began to drop but the seas remained large preventing any work being done that day. By 2000 hrs we decided to proceed to the NE Peak of Georges Bank to begin the 36 hr station the following morning. The swell was still large by morning but we took net tows at St 7 to see if the Calanus populations were suitable for the study of diel periodicity in egg laying and diel changes in egg and naupliar abundance in the water column. Unfortunately Calanus abundance was very low and it was not a good location for the study. We then completed regular sampling at the station and then headed north back to the Gulf of Maine to complete the last station on the GOM transect. This was completed at night in some rather wild conditions with the wind blowing around 30 kts and large swells. Everything was completed, however, with no mishaps.

A large storm was predicted for Thursday with 40-45 kt winds on Georges bank. This would preclude us carrying out any time series study in the GOM or on GB before we had to leave on Friday to come in. We decided to head into sheltered waters in Massachusetts Bay to see if we could find sufficient animals to carry out the 36 hr study in sheltered waters while the storm was blowing. We stopped in the western Wilkinson Basin and collected Calanus for experiments and proceeded to a location just inside Stellwagen Bank in Massachusetts Bay. Unfortunately a net tow revealed very few Calanus and incredibly large numbers of phytoplankton which clogged even a 333 m net which precluded us from carrying out the 36 hr study at this location. The weather forecast at this point was predicting high wind and 22 ft seas for the following day in the S Gulf of Maine Georges Bank area. At this point we decided to return to Narragansett since we would not have been able to accomplish anything significant on Friday morning (if we were able to work at all), before having to break off to return to Narragansett on Sat.

Individual reports follow.

HYDROGRAPHY

CTD profiles for St 2-8 are shown in Figures 2-9. Adjacent to the Maine coast at St 2 (Fig. 2) water was mixed to the bottom (120m) with temperature about 3.7 and salinity 32.5. Chlorophyll fluorescence was low. Across the Gulf at Sts 3-6 the surface mixed layer extended down to about 60m and there was high chlorophyll fluorescence within this layer. Surface temperature was between 3.5 and 4.5 and salinity between 32.4 and 32.6. At St 8 adjacent to Georges Bank the mixed layer extended down to 100m, the temperature warmer than at other stations in the GOM (5.2 C), and chlorophyll fluorescence low (Fig 8). On Georges Bank (St 7) there were suggestions of a slightly colder fresher layer at the surface and then a well-mixed water column beneath this (Fig 9). Water temperature and salinity was higher than in the GOM (6 C and 33 respectively).

Figure 2. Station 2 CTD profiles

 

Figure 3. Station 3 CTD profiles

 

Figure 4. Station 4 CTD profiles

 

Figure 5. Station 5 CTD profiles

 

Figure 6. Station 6 CTD profiles

 

Figure 8. Station 8 CTD profiles

 

Figure 7. Station 7 CTD profiles

 

CHLOROPHYLL and NUTRIENTS

At each station size-fractionated chlorophyll a (<5m and Total) and nutrients (NH4, NO3, NO2, PO4) were measured at 10 m intervals down to 60 m and at the bottom. Values are shown in Table 02. At St 2 in Maine Coastal Water chlorophyll a was <1 g l-1 with most being in the <5 m fraction suggesting that the spring bloom had not yet begun. Nitrate and phosphate were high (>10 M and > 1.0 m) and the same throughout the 112 m water column. At St 3-6 across the Jordan and into the northern edge of Georges Basin total chlorophyll a was between 2 and 7 g L-1. Most of the phytoplankton was in the larger size-fraction. Nitrate and phosphate were lower than in Maine Coastal Water and decreased from towards the south (St 6) where nitrate was around 6 M and phosphate 0.7 M. These higher chlorophyll values coupled with lower nutrients, indicated that the spring bloom had already begun. This is very early for the central Gulf of Maine where typically high chlorophyll values are not seen until April and May (OReilly and Zetlin 1999). Perhaps it reflected the calmer weather experienced up until the time of the cruise.

Table 1. Chlorophyll a and nutrients from EN319.

 

 

 

 

 

 

 

Station

Depth, m

<5 m Chl a

>5 m Chl a

Total Chl a

DIP

NO3

 

 

ug L-1

ug L-1

ug L-1

uM

uM

1

0

0.58

1.17

1.75

 

 

1

5

0.50

1.01

1.51

 

 

1

10

0.67

0.92

1.59

 

 

1

20

0.53

1.26

1.79

 

 

1

30

0.54

1.13

1.67

 

 

1

40

0.63

1.12

1.75

 

 

1

44

0.49

0.94

1.43

 

 

 

 

 

 

 

 

 

2

0

0.40

0.20

0.60

1.10

11.04

2

5

0.40

0.40

0.80

1.07

10.82

2

10

0.40

0.10

0.50

1.07

10.61

2

20

0.38

0.29

0.67

1.08

10.72

2

30

0.40

0.14

0.54

1.13

10.73

2

40

0.30

0.06

0.37

1.08

10.93

2

60

0.27

0.33

0.60

 

 

2

112

 

 

 

1.12

10.93

 

 

 

 

 

 

 

3

0

0.75

2.06

2.81

0.99

8.66

3

5

0.80

2.16

2.96

0.96

8.70

3

10

0.95

1.86

2.81

0.94

8.45

3

20

0.80

2.11

2.91

0.96

8.64

3

30

0.90

1.61

2.51

0.95

8.77

3

40

0.85

1.76

2.61

0.95

8.61

3

60

0.05

0.15

0.20

0.94

8.58

3

168

 

 

 

1.35

13.86

 

 

 

 

 

 

 

4

0

0.66

1.97

2.63

0.93

8.19

4

5

0.73

1.74

2.47

0.90

8.20

4

10

0.73

1.55

2.28

0.90

8.19

4

20

0.70

1.82

2.51

0.90

8.23

4

30

0.66

1.58

2.24

1.00

8.46

4

40

0.31

0.73

1.04

1.24

8.86

4

50

0.02

0.01

0.04

1.11

9.69

4

239

 

 

 

1.55

18.99

 

 

 

 

 

 

 

5

0

0.66

2.32

2.98

0.83

7.06

5

10

0.58

2.43

3.01

0.84

7.01

5

20

0.77

2.09

2.86

0.81

7.12

5

30

0.70

2.43

3.13

0.84

7.27

5

40

0.71

4.18

4.89

0.82

7.05

5

60

0.70

2.40

3.09

0.84

7.32

5

157

 

 

 

1.39

16.83

 

 

 

 

 

 

 

6

0

0.62

2.28

2.90

0.75

6.25

6

10

0.77

2.47

3.25

0.72

6.09

6

20

0.70

2.16

2.86

0.74

6.22

6

30

0.62

6.34

6.95

0.73

6.27

6

40

0.77

2.05

2.82

0.72

6.27

6

60

0.85

2.32

3.17

0.79

7.18

6

199

 

 

 

1.39

19.81

 

 

 

 

 

 

 

8

0

0.62

1.35

1.97

0.90

8.96

8

10

0.73

0.89

1.62

0.90

8.78

8

20

0.77

1.08

1.85

0.92

8.70

8

30

0.77

1.24

2.01

0.90

8.99

8

40

0.93

1.24

2.16

0.91

8.98

8

60

0.66

1.12

1.78

0.93

8.93

8

226

 

 

 

1.47

18.40

 

 

 

 

 

 

 

7

0

0.58

1.28

1.85

0.80

10.05

7

10

0.35

1.12

1.47

0.80

7.66

7

20

0.35

1.12

1.47

0.81

7.93

7

30

0.46

1.39

1.85

0.81

7.93

7

40

0.39

1.51

1.89

0.82

7.95

7

66

0.62

1.08

1.70

0.76

8.03


ZOOPLANKTON ABUNDANCE

 

Below we present zooplankton pump counts. At this stage the MOCNESS samples have not been enumerated.

 

 

Plankton Pump Counts. Zooplankton pump samples were collected and counted using standard GLOBEC Broadscale Survey Procedures. Samples were normally collected from 100-70m, 70-40m, 40-15m and 15-0m. Table 2 shows the abundance of Calanus finmarchicus stages for the different depths, while Table 3 shows the total abundance of Calanus over the whole water column at each station. At all stations there was a population of young nauplii and copepodites. Abundance of nauplii was lowest at St 8, adjacent to Georges Bank (8,700 m-2); elsewhere across the Gulf numbers were between 23,000 (St 2) and 55,000 m-2 (St 5). On Georges Bank (St 7) abundance of Calanus nauplii was higher (76,000 m-2), but there were relatively fewer older stages present compared with St 2-6 in the Gulf of Maine.

 

Other abundant copepod nauplii included Oithona, Calasocalanus/Paracalanus, Metridia and Pseudocalanus (Table 5). Oithona was particularly abundant with total numbers >1,000,000 m-2 at all stations but St 2 and 4. Microsetella was quite abundant but was present mostly as copepoidites at depth.

 


Table 2. Abundance of Calanus finmarchicus nauplii. copepodites and adults within each depth range from plankton pump samples. Numbers are the number per square meter for each pump depth range.

 

 

ST

TOW

NET

DEPTH

N1

N2

N3

N4

N5

N6

C1

C2

C3

C4

C5

FEM

MAL

2

1

4

15-0

0

398

1820

1820

3355

1535

512

114

284

114

171

455

0

2

1

3

40-15

0

702

3367

2666

3227

1122

281

281

0

0

0

140

0

2

1

2

70-40

0

775

339

0

97

97

145

48

0

48

0

0

0

2

1

1

100-70

121

483

241

0

121

1328

121

0

0

0

0

241

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

2

4

15-0

0

0

3808

2240

1344

1792

0

448

672

448

0

0

0

3

2

3

40-15

0

606

4040

2424

2222

808

202

404

808

202

0

202

202

3

2

2

70-40

0

0

4144

0

2486

4972

0

829

829

829

0

0

0

3

2

1

100-70

0

253

0

253

505

253

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

3

3

15-0

66

1052

3089

1577

2300

1709

657

460

460

131

0

66

0

4

3

2

70-15

0

2987

7767

1195

2390

2390

2987

1195

4182

0

0

597

0

4

3

1

100-70

0

0

342

0

0

0

0

0

0

85

0

0

85

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

4

4

15-0

239

1196

8371

3348

3348

1674

1435

718

1435

0

0

0

0

5

4

3

40-15

1853

1853

6949

3706

3706

4633

3706

463

1853

463

0

463

0

5

4

2

70-40

1099

4395

4212

1465

549

732

2014

549

366

0

0

0

549

5

4

1

100-70

0

119

119

0

0

119

0

0

0

119

0

119

119

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

5

4

15-0

647

3019

6686

2372

5608

2804

2157

863

3235

2588

216

216

0

6

5

3

40-15

544

6527

5439

2719

0

2176

3807

544

1632

0

0

0

0

6

5

2

70-40

342

2052

2394

0

0

0

1710

342

0

0

0

0

0

6

5

1

100-70

0

128

0

64

0

0

0

0

0

64

64

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

6

3

15-0

247

2721

16822

4948

1484

1237

990

247

742

247

0

0

247

7

6

2

40-15

0

7357

16350

2997

272

1635

817

545

0

545

0

0

272

7

6

1

70-40

895

8053

6860

1193

1790

1193

1491

895

597

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

7

4

15-0

0

204

409

818

204

613

818

0

409

613

0

0

0

8

7

3

40-15

0

0

1738

579

290

290

290

434

0

145

0

145

0

8

7

2

70-40

0

933

466

466

933

0

0

466

466

466

0

0

466

8

7

1

90-70

0

501

250

0

0

0

0

0

0

0

0

0

0

 


Table 3. Total water column abundance of Calanus finmarchicus nauplii. copepodites and adults from plankton pump samples. Samples were collected between 0-100m or 0 and the bottom, if it was less than 100m.

 

ST

TOW

N1

N2

N3

N4

N5

N6

C1

C2

C3

C4

C5

C6F

C6M

Tot Naup

Tot Copeps

Tot Adults

M2Tot Cop

2

1

121

2,357

5,767

4,486

6,800

4,083

1,058

443

284

162

171

837

0

23,613

2,118

837

26,568

3

2

0

859

11,992

4,917

6,558

7,825

202

1,681

2,309

1,479

0

202

202

32,151

5,670

404

38,225

4

3

66

4,039

11,198

2,772

4,690

4,099

3,645

1,655

4,642

217

0

663

85

26,864

10,159

749

37,772

5

4

3,191

7,563

19,651

8,519

7,604

7,158

7,155

1,730

3,654

582

0

582

668

53,686

13,122

1,251

68,059

6

5

1,533

11,726

14,519

5,156

5,608

4,979

7,674

1,749

4,867

2,652

280

216

0

43,522

17,221

216

60,959

7

6

1,142

18,131

40,032

9,138

3,546

4,065

3,298

1,687

1,339

792

0

0

520

76,055

7,116

520

83,691

8

7

0

1,638

2,864

1,864

1,427

903

1,107

901

875

1,225

0

145

466

8,695

4,108

611

13,415

 

 

 


Table 4. Total water column abundance of zooplankton taxa from plankton pump samples. Samples were collected between 0-100m or 0 and the bottom, if it was less than 100m.

ST TOW N DEPTH TAXON NAUPLI COPS FEM MALES OTHER TOTAL TOTA

ST

TOW

N

DEPTH

 

TAXON

NAUPLII

COPS

FEM

MALES

OTHER

TOTAL

2

1

4

15-0

 

Calanus finmarchicus

8928

1194

455

0

 

10577

2

1

3

40-15

 

Calanus finmarchicus

11084

561

140

0

 

11786

2

1

2

70-40

 

Calanus finmarchicus

1307

242

0

0

 

1549

2

1

1

100-70

 

Calanus finmarchicus

2294

121

241

0

 

2656

2

1

3

40-15

 

Centropages spp.

1403

140

 

 

 

1543

2

1

2

70-40

 

Centropages spp.

301

1653

 

 

 

1954

2

1

1

100-70

 

Centropages spp.

362

1328

 

 

 

1690

2

1

1

100-70

 

Cladocera

 

 

 

 

121

121

2

1

4

15-0

 

Clauso./Para complex

682

57

 

 

 

739

2

1

3

40-15

 

Clauso./Para complex

2806

140

 

 

 

2946

2

1

2

70-40

 

Clauso./Para complex

2555

150

 

 

 

2706

2

1

1

100-70

 

Clauso./Para complex

3622

0

 

 

 

3622

2

1

1

100-70

 

Euchaeta spp.

 

121

0

0

 

121

2

1

1

100-70

 

Euphausids

 

 

 

 

483

483

2

1

4

15-0

 

Gastr larv & pteros

 

 

 

10805

10805

2

1

3

40-15

 

Gastr larv & pteros

 

 

 

35216

35216

2

1

2

70-40

 

Gastr larv & pteros

 

 

 

6013

6013

2

1

3

40-15

 

Metridia lucens

 

 

140

0

 

140

2

1

1

100-70

 

Metridia lucens

 

 

1087

845

 

1932

2

1

4

15-0

 

Metridia spp.

2104

114

 

 

 

2218

2

1

3

40-15

 

Metridia spp.

6173

140

 

 

 

6314

2

1

2

70-40

 

Metridia spp.

7215

1503

 

 

 

8718

2

1

1

100-70

 

Metridia spp.

3501

2173

 

 

 

5674

2

1

4

15-0

 

Microcalanus spp.

 

57

57

0

 

114

2

1

2

70-40

 

Microcalanus spp.

 

752

150

0

 

902

2

1

1

100-70

 

Microcalanus spp.

 

966

1087

121

 

2173

2

1

4

15-0

 

Microsetella norvegica

0

341

 

 

 

341

2

1

3

40-15

 

Microsetella norvegica

281

8418

 

 

 

8699

2

1

2

70-40

 

Microsetella norvegica

0

23900

 

 

 

23900

2

1

1

100-70

 

Microsetella norvegica

0

59397

 

 

 

59397

2

1

4

15-0

 

Oithona spp.

33154

18084

3412

0

 

54650

2

1

3

40-15

 

Oithona spp.

70854

38303

6314

0

 

115470

2

1

2

70-40

 

Oithona spp.

36377

22397

3157

0

 

61931

2

1

1

100-70

 

Oithona spp.

32716

16901

1087

0

 

50704

2

1

4

15-0

 

Oncaea spp.

 

1024

 

 

 

1024

2

1

3

40-15

 

Oncaea spp.

 

1824

 

 

 

1824

2

1

2

70-40

 

Oncaea spp.

 

3006

 

 

 

3006

2

1

1

100-70

 

Oncaea spp.

 

3742

 

 

 

3742

2

1

3

40-15

 

Paracalanus spp.

 

 

140

0

 

140

2

1

4

15-0

 

Pseudocalanus spp.

4208

1194

114

0

 

5516

2

1

3

40-15

 

Pseudocalanus spp.

9400

1964

281

0

 

11645

2

1

2

70-40

 

Pseudocalanus spp.

3486

5617

629

872

 

10604

2

1

1

100-70

 

Pseudocalanus spp.

6881

6398

2535

1569

 

17384

2

1

4

15-0

 

Temora longicornis

512

284

0

0

 

796

2

1

2

70-40

 

Temora longicornis

150

0

0

0

 

150

2

1

1

100-70

 

Temora longicornis

121

0

0

0

 

121


 

ST

TOW

N

DEPTH

 

TAXON

NAUPLII

COPS

FEM

MALES

OTHER

TOTAL

 

3

2

4

15-0

 

Calanus finmarchicus

9185

1568

0

0

 

10753

3

2

3

40-15

 

Calanus finmarchicus

10101

1616

202

202

 

12121

3

2

2

70-40

 

Calanus finmarchicus

11602

2486

0

0

 

14088

3

2

1

100-70

 

Calanus finmarchicus

1263

0

0

0

 

1263

3

2

3

40-15

 

Centropages hamatus

 

 

404

0

 

404

3

2

2

70-40

 

Centropages hamatus

 

 

1657

0

 

1657

3

2

4

15-0

 

Centropages spp.

2016

1792

 

 

 

3808

3

2

3

40-15

 

Centropages spp.

808

1616

 

 

 

2424

3

2

2

70-40

 

Centropages spp.

4144

6630

 

 

 

10773

3

2

1

100-70

 

Centropages spp.

1517

506

 

 

 

2022

3

2

4

15-0

 

Clauso./Para complex

448

0

 

 

 

448

3

2

3

40-15

 

Clauso./Para complex

606

606

 

 

 

1212

3

2

2

70-40

 

Clauso./Para complex

1657

829

 

 

 

2486

3

2

1

100-70

 

Clauso./Para complex

3539

0

 

 

 

3539

3

2

1

100-70

 

Eucalanus spp.

 

506

0

0

 

506

3

2

4

15-0

 

Gastr larv & pteros

 

 

 

42339

42339

3

2

3

40-15

 

Gastr larv & pteros

 

 

 

60607

60607

3

2

2

70-40

 

Gastr larv & pteros

 

 

 

165741

165741

3

2

1

100-70

 

Gastr larv & pteros

 

 

 

75840

75840

3

2

4

15-0

 

Metridia lucens

 

 

2016

0

 

2016

3

2

3

40-15

 

Metridia lucens

 

 

6869

0

 

6869

3

2

2

70-40

 

Metridia lucens

 

 

21546

0

 

21546

3

2

1

100-70

 

Metridia lucens

 

 

2022

506

 

2528

3

2

4

15-0

 

Metridia spp.

14561

896

 

 

 

15457

3

2

3

40-15

 

Metridia spp.

15758

2020

 

 

 

17778

3

2

2

70-40

 

Metridia spp.

38120

7458

 

 

 

45579

3

2

1

100-70

 

Metridia spp.

11629

3539

 

 

 

15168

3

2

1

100-70

 

Microcalanus spp.

 

0

1011

0

 

1011

3

2

4

15-0

 

Microsetella norvegica

224

29794

 

 

 

30018

3

2

3

40-15

 

Microsetella norvegica

0

50304

 

 

 

50304

3

2

2

70-40

 

Microsetella norvegica

2486

161598

 

 

 

164084

3

2

1

100-70

 

Microsetella norvegica

4045

47527

 

 

 

51571

3

2

4

15-0

 

Oithona spp.

131048

66308

11201

672

 

209229

3

2

3

40-15

 

Oithona spp.

175559

95153

21212

0

 

291924

3

2

2

70-40

 

Oithona spp.

525399

237010

70440

0

 

832849

3

2

1

100-70

 

Oithona spp.

211341

108704

33875

0

 

353921

3

2

3

40-15

 

Oncaea spp.

 

404

 

 

 

404

3

2

2

70-40

 

Oncaea spp.

 

1657

 

 

 

1657

3

2

1

100-70

 

Oncaea spp.

 

2022

 

 

 

2022

3

2

4

15-0

 

Paracalanus spp.

 

 

224

0

 

224

3

2

4

15-0

 

Pseudocalanus spp.

13217

4256

1120

672

 

19265

3

2

3

40-15

 

Pseudocalanus spp.

12323

3838

606

808

 

17576

3

2

2

70-40

 

Pseudocalanus spp.

43921

4144

1657

1657

 

51380

3

2

1

100-70

 

Pseudocalanus spp.

11874

1263

0

253

 

13389

3

2

4

15-0

 

Temora longicornis

224

0

0

0

 

224

3

2

3

40-15

 

Temora longicornis

404

0

0

0

 

404

3

2

2

70-40

 

Temora longicornis

829

0

0

0

 

829


 

ST

TOW

N

DEPTH

 

TAXON

NAUPLII

COPS

FEM

MALES

OTHER

TOTAL

4

3

3

15-0

 

Calanus finmarchicus

9792

1709

66

0

 

11567

4

3

2

70-15

 

Calanus finmarchicus

16730

8365

597

0

 

25692

4

3

1

100-70

 

Calanus finmarchicus

342

85

0

85

 

513

4

3

3

15-0

 

Centropages hamatus

 

 

332

0

 

332

4

3

2

70-15

 

Centropages hamatus

 

 

1195

0

 

1195

4

3

3

15-0

 

Centropages spp.

4645

1659

 

 

 

6304

4

3

2

70-15

 

Centropages spp.

0

6572

 

 

 

6572

4

3

1

100-70

 

Centropages spp.

427

85

 

 

 

513

4

3

3

15-0

 

Clauso./Para complex

3650

332

 

 

 

3981

4

3

2

70-15

 

Clauso./Para complex

15535

597

 

 

 

16132

4

3

1

100-70

 

Clauso./Para complex

12044

171

 

 

 

12215

4

3

3

15-0

 

Euphausids

 

 

 

 

332

332

4

3

3

15-0

 

Gastr larv & pteros

 

 

 

63038

63038

4

3

2

70-15

 

Gastr larv & pteros

 

 

 

212707

212707

4

3

1

100-70

 

Gastr larv & pteros

 

 

 

21696

21696

4

3

1

100-70

 

Metridia lucens

 

 

342

1879

 

2221

4

3

3

15-0

 

Metridia spp.

25547

0

 

 

 

25547

4

3

2

70-15

 

Metridia spp.

112926

25692

2390

2390

 

143398

4

3

1

100-70

 

Metridia spp.

15375

4271

 

 

 

19646

4

3

2

70-15

 

Microcalanus spp.

 

597

2390

0

 

2987

4

3

1

100-70

 

Microcalanus spp.

 

3758

2306

0

 

6065

4

3

3

15-0

 

Microsetella norvegica

332

4977

 

 

 

5308

4

3

2

70-15

 

Microsetella norvegica

7170

54969

 

 

 

62139

4

3

1

100-70

 

Microsetella norvegica

598

21952

 

 

 

22550

4

3

3

15-0

 

Oithona spp.

109818

49103

12276

664

 

171861

4

3

2

70-15

 

Oithona spp.

347741

216292

23900

8962

 

596895

4

3

1

100-70

 

Oithona spp.

36644

16486

9823

0

 

62953

4

3

3

15-0

 

Oncaea spp.

 

332

 

 

 

332

4

3

2

70-15

 

Oncaea spp.

 

7767

 

 

 

7767

4

3

1

100-70

 

Oncaea spp.

 

4442

 

 

 

4442

4

3

2

70-15

 

Paracalanus spp.

 

597

0

0

 

597

4

3

3

15-0

 

Pseudocalanus spp.

7164

2169

329

131

 

9792

4

3

2

70-15

 

Pseudocalanus spp.

47799

5975

1792

597

 

56164

4

3

1

100-70

 

Pseudocalanus spp.

1025

0

0

0

 

1025

4

3

3

15-0

 

Temora longicornis

332

0

0

0

 

332

4

3

2

70-15

 

Temora longicornis

1792

0

0

0

 

1792


 

5

4

4

15-0

 

Calanus finmarchicus

18177

3588

0

0

 

21765

5

4

3

40-15

 

Calanus finmarchicus

22700

6486

463

0

 

29648

5

4

2

70-40

 

Calanus finmarchicus

12451

2930

0

549

 

15930

5

4

1

100-70

 

Calanus finmarchicus

357

119

119

119

 

715

5

4

3

40-15

 

Centropages hamatus

 

 

463

0

 

463

5

4

4

15-0

 

Centropages spp.

4544

1674

 

 

 

6219

5

4

3

40-15

 

Centropages spp.

9265

2316

 

 

 

11581

5

4

2

70-40

 

Centropages spp.

6185

1767

 

 

 

7952

5

4

4

15-0

 

Clauso./Para complex

239

239

 

 

 

478

5

4

3

40-15

 

Clauso./Para complex

463

927

 

 

 

1390

5

4

2

70-40

 

Clauso./Para complex

5301

0

 

 

 

5301

5

4

1

100-70

 

Clauso./Para complex

18708

0

 

 

 

18708

5

4

1

100-70

 

Clausocalanus spp.

 

 

119

0

 

119

5

4

2

70-40

 

Metridia lucens

 

 

884

0

 

884

5

4

1

100-70

 

Metridia lucens

 

 

238

596

 

834

5

4

4

15-0

 

Metridia spp.

9328

0

 

 

 

9328

5

4

3

40-15

 

Metridia spp.

103306

927

 

 

 

104233

5

4

2

70-40

 

Metridia spp.

95418

7952

 

 

 

103370

5

4

1

100-70

 

Metridia spp.

13107

3336

 

 

 

16444

5

4

2

70-40

 

Microcalanus spp.

 

884

884

0

 

1767

5

4

1

100-70

 

Microcalanus spp.

 

6077

2264

0

 

8341

5

4

4

15-0

 

Microsetella norvegica

478

718

 

 

 

1196

5

4

3

40-15

 

Microsetella norvegica

1853

2780

 

 

 

4633

5

4

2

70-40

 

Microsetella norvegica

5301

28272

 

 

 

33573

5

4

1

100-70

 

Microsetella norvegica

3336

17039

 

 

 

20376

5

4

4

15-0

 

Oithona spp.

116477

79406

9806

0

 

205689

5

4

3

40-15

 

Oithona spp.

243673

201053

14824

2316

 

461866

5

4

2

70-40

 

Oithona spp.

269469

147545

6185

7068

 

430266

5

4

1

100-70

 

Oithona spp.

68039

16801

8460

0

 

93300

5

4

2

70-40

 

Oncaea spp.

 

1767

 

 

 

1767

5

4

1

100-70

 

Oncaea spp.

 

2621

 

 

 

2621

5

4

4

15-0

 

Pseudocalanus spp.

16264

1435

478

0

 

18177

5

4

3

40-15

 

Pseudocalanus spp.

45399

9728

4169

3706

 

63003

5

4

2

70-40

 

Pseudocalanus spp.

26917

8606

366

549

 

36439

5