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Ekau, Werner; Geist, Simon; Bröhl, Stefanie (2015): Ichthyoplankton density and zooplankton biomass in the Benguela upwelling system during AFR258 in December 2009 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.843216

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Abstract:
IIchthyoplankton density (fish eggs and larvae) and bulk zooplankton biomass in December 2009 were determined for 22 stations in the Benguela upwelling system, based on oblique Multinet hauls during the FRS Africana cruise AFR258. A HYDROBIOS Multinet, type Midi (0.25 m**2 mouth area) was equipped with five nets of 500 µm-mesh size, temperature and oxygen probes, and an inner and outer flow meter to monitor the net's trajectory (for volume filtered calculations) as well as net clogging. The Multinet was handled over the side, towed horizontally at 2 knots. Winch speed when fearing was 0.5 or 0.3 m/s, heaving velocity 0.2 - 0.3 m/s. The Multinet was towed obliquely at 22 stations sampling the upper 200 m of the water column, which were divided into five different depth strata after inspection of temperature and oxygen concentration depth profiles. Ichthyoplankton densities and zooplankton biomass were calculated for each depth stratum (=single net) from total abundance and the volume of water filtered [individuals per m**3 and g wet weight per m**3, respectively]. Densities and biomass were integrated over the area for each station [individuals per m**2], as sum of calculations for each net: Sum ([individuals per m**3]*Delta (depth bot[m]-depth top [m]).
Funding:
Bundesministerium für Bildung und Forschung, Bonn (BMBF), grant/award no. 03F0650: Geochemistry and ecology of the Namibian upwelling system
Coverage:
Median Latitude: -22.632196 * Median Longitude: 13.288104 * South-bound Latitude: -32.300000 * West-bound Longitude: 10.480000 * North-bound Latitude: -17.230000 * East-bound Longitude: 17.983330
Date/Time Start: 2009-12-03T11:00:00 * Date/Time End: 2009-12-15T05:32:00
Minimum DEPTH, water: m * Maximum DEPTH, water: 220 m
Event(s):
AFR258_30244_2 (Fi-1_2)  * Latitude: -32.300000 * Longitude: 17.983330 * Date/Time Start: 2009-12-03T11:00:00 * Date/Time End: 2009-12-03T12:30:00 * Elevation: -112.0 m * Location: Benguela Upwelling * Campaign: AFR258 * Basis: Africana (1982) * Method/Device: Multiple opening/closing net, 500 µm meshsize (MSN500)
AFR258_30245_2 (Fi-2_2)  * Latitude: -30.298330 * Longitude: 17.108330 * Date/Time Start: 2009-12-04T03:58:00 * Date/Time End: 2009-12-04T04:08:00 * Elevation: -132.0 m * Location: Benguela Upwelling * Campaign: AFR258 * Basis: Africana (1982) * Method/Device: Multiple opening/closing net, 500 µm meshsize (MSN500)
AFR258_30246_3 (Fi-3_3)  * Latitude: -30.633330 * Longitude: 16.016660 * Date/Time Start: 2009-12-04T11:34:00 * Date/Time End: 2009-12-04T13:26:00 * Elevation: -212.0 m * Location: Benguela Upwelling * Campaign: AFR258 * Basis: Africana (1982) * Method/Device: Multiple opening/closing net, 500 µm meshsize (MSN500)
Comment:
Geocode DEPTH, water is the mid depth of net range. Empty cell describes a missing sample.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
Optional event labelEvent 2
Date/Time of eventDate/Time
Latitude of eventLatitude
Longitude of eventLongitude
Elevation of eventElevationm
Method/Device of eventMethod/Device
NumberNoGeist, Simonof net
Depth, top/minDepth topmGeist, Simonnet opened
10 Depth, bottom/maxDepth botmGeist, Simonnet closed
11 DEPTH, waterDepth watermGeocode
12 VolumeVolm3Geist, SimonCalculatedof net
13 Zooplankton, biomass, wet massZoopl biom wmmg/m3Geist, SimonCalculatedoriginal unit is in [g/100 m**3]
14 Zooplankton, biomass, wet massZoopl biom wmg/m2Geist, SimonCalculatedper station
15 Fish eggsFish eggs#Geist, SimonCalculatedper net
16 Fish eggsFish eggs#/m3Geist, SimonCalculatedoriginal unit is in [#/100 m**3]
17 Fish eggsFish eggs#/m2Geist, SimonCalculatedoriginal unit is in [#/10 m**2]
18 Fish larvaeFish larv#Geist, SimonCalculatedper net
19 Fish larvaeFish larv#/m3Geist, SimonCalculatedoriginal unit is in [#/100 m**3]
20 Fish larvaeFish larv#/m2Geist, SimonCalculatedoriginal unit is in [#/10 m**2]
Size:
861 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Event 2

Date/Time

Latitude

Longitude

Elevation [m]

Method/Device

No

Depth top [m]
10 
Depth bot [m]
11 
Depth water [m]
12 
Vol [m3]
13 
Zoopl biom wm [mg/m3]
14 
Zoopl biom wm [g/m2]
15 
Fish eggs [#]
16 
Fish eggs [#/m3]
17 
Fish eggs [#/m2]
18 
Fish larv [#]
19 
Fish larv [#/m3]
20 
Fish larv [#/m2]
AFR258_30244_2 Fi-1_22009-12-03T11:00-32.300017.9833-112Multiple opening/closing net, 500 µm meshsize3601008044295.0000000000.0000000.00000
AFR258_30244_2Fi-1_22009-12-03T11:00-32.300017.9833-112Multiple opening/closing net, 500 µm meshsize430601521343.8095238000.0000000.00000
AFR258_30244_2Fi-1_22009-12-03T11:00-32.300017.9833-112Multiple opening/closing net, 500 µm meshsize5030152282.7272727324.6090.4090912.2727300.000000.00000
AFR258_30245_2 Fi-2_22009-12-04T03:58-30.298317.1083-132Multiple opening/closing net, 500 µm meshsize36098803251.8750000000.0000000.00000
AFR258_30245_2Fi-2_22009-12-04T03:58-30.298317.1083-132Multiple opening/closing net, 500 µm meshsize43060454271.6666666700.0000000.00000
AFR258_30245_2Fi-2_22009-12-04T03:58-30.298317.1083-132Multiple opening/closing net, 500 µm meshsize50301541308.7804878013.3800.000000.0000050.121953.65854
AFR258_30246_3 Fi-3_32009-12-04T11:34-30.633316.0167-212Multiple opening/closing net, 500 µm meshsize11402001706616.66666667120.18182150.22727
AFR258_30246_3Fi-3_32009-12-04T11:34-30.633316.0167-212Multiple opening/closing net, 500 µm meshsize21001401203750.5405405400.00000120.32432
AFR258_30246_3Fi-3_32009-12-04T11:34-30.633316.0167-212Multiple opening/closing net, 500 µm meshsize370100859357.52688172490.5268820.02151
AFR258_30246_3Fi-3_32009-12-04T11:34-30.633316.0167-212Multiple opening/closing net, 500 µm meshsize435705345133.33333330180.40000180.40000
AFR258_30246_3Fi-3_32009-12-04T11:34-30.633316.0167-212Multiple opening/closing net, 500 µm meshsize50351835546.2857143028.53140.4000054.71554290.8285770.25450
AFR258_30247_2 Fi-4_22009-12-05T05:35-28.500015.3667-175Multiple opening/closing net, 500 µm meshsize11401651533383.3333333310.0303070.21212
AFR258_30247_2Fi-4_22009-12-05T05:35-28.500015.3667-175Multiple opening/closing net, 500 µm meshsize21001401207278.61111111330.4583340.05556
AFR258_30247_2Fi-4_22009-12-05T05:35-28.500015.3667-175Multiple opening/closing net, 500 µm meshsize360100804484.3181818240.0909150.11364
AFR258_30247_2Fi-4_22009-12-05T05:35-28.500015.3667-175Multiple opening/closing net, 500 µm meshsize43060453196.4516129020.0645260.19355
AFR258_30247_2Fi-4_22009-12-05T05:35-28.500015.3667-175Multiple opening/closing net, 500 µm meshsize50301533164.2424242016.42150.4545538.2991210.0303018.78625
AFR258_30248_3 Fi-5_32009-12-05T13:55-27.483315.1167-150Multiple opening/closing net, 500 µm meshsize21001401203035.3333333370.2333300.00000
AFR258_30248_3Fi-5_32009-12-05T13:55-27.483315.1167-150Multiple opening/closing net, 500 µm meshsize350100759028.66666667390.4333300.00000
AFR258_30248_3Fi-5_32009-12-05T13:55-27.483315.1167-150Multiple opening/closing net, 500 µm meshsize420503531121.93548390110.3548420.06452
AFR258_30248_3Fi-5_32009-12-05T13:55-27.483315.1167-150Multiple opening/closing net, 500 µm meshsize50201023192.1739130010.35220.9565260.7756000.000001.93548
AFR258_30249_2 Fi-6_22009-12-06T05:13-25.750014.7667-57Multiple opening/closing net, 500 µm meshsize430554331791.2903226000.0000030.09677
AFR258_30249_2Fi-6_22009-12-06T05:13-25.750014.7667-57Multiple opening/closing net, 500 µm meshsize50301523233.4782609026.7900.000000.0000010.043483.72370
AFR258_30251_2 T-5-5_22009-12-08T14:57-19.000012.4500-32Multiple opening/closing net, 500 µm meshsize415302313139.2307692000.0000000.00000
AFR258_30251_2T-5-5_22009-12-08T14:57-19.000012.4500-32Multiple opening/closing net, 500 µm meshsize50158610.000000002.2400.000000.0000000.000000.00000
AFR258_30252_3 T-5-4_32009-12-08T19:35-19.000012.2500-103Multiple opening/closing net, 500 µm meshsize2701008519169.47368420914.7894740.21053
AFR258_30252_3T-5-4_32009-12-08T19:35-19.000012.2500-103Multiple opening/closing net, 500 µm meshsize340705541173.4146341070.1707360.14634
AFR258_30252_3T-5-4_32009-12-08T19:35-19.000012.2500-103Multiple opening/closing net, 500 µm meshsize420403014440.0000000040.2857100.00000
AFR258_30252_3T-5-4_32009-12-08T19:35-19.000012.2500-103Multiple opening/closing net, 500 µm meshsize50201014176.4285714022.6250.35714161.6633030.2142914.99175
AFR258_30253_2 T-5-3_22009-12-08T23:40-19.000012.0000-194Multiple opening/closing net, 500 µm meshsize114018516356111.42857140340.6071440.07143
AFR258_30253_2T-5-3_22009-12-08T23:40-19.000012.0000-194Multiple opening/closing net, 500 µm meshsize21001401204087.25000000601.5000020.05000
AFR258_30253_2T-5-3_22009-12-08T23:40-19.000012.0000-194Multiple opening/closing net, 500 µm meshsize3601008082158.41463410640.78049140.17073
AFR258_30253_2T-5-3_22009-12-08T23:40-19.000012.0000-194Multiple opening/closing net, 500 µm meshsize430604536297.22222220130.36111591.63889
AFR258_30253_2T-5-3_22009-12-08T23:40-19.000012.0000-194Multiple opening/closing net, 500 µm meshsize50301537226.4864865030.55280.75676152.07698611.64865110.66968
AFR258_30254_3 T-5-1_32009-12-09T06:08-19.000011.4333-418Multiple opening/closing net, 500 µm meshsize116020018046175.8695652010.0217400.00000
AFR258_30254_3T-5-1_32009-12-09T06:08-19.000011.4333-418Multiple opening/closing net, 500 µm meshsize21201601403958.2051282100.0000000.00000
AFR258_30254_3T-5-1_32009-12-09T06:08-19.000011.4333-418Multiple opening/closing net, 500 µm meshsize3801201004797.2340425510.0212820.04255
AFR258_30254_3T-5-1_32009-12-09T06:08-19.000011.4333-418Multiple opening/closing net, 500 µm meshsize44080603456.1764705910.0294120.05882
AFR258_30254_3T-5-1_32009-12-09T06:08-19.000011.4333-418Multiple opening/closing net, 500 µm meshsize5040203771.8918918918.381925.18919210.4646700.000004.05507
AFR258_30255_2 Add-11_22009-12-09T18:30-17.250011.7167-42Multiple opening/closing net, 500 µm meshsize43040352914.48275862170.5862100.00000
AFR258_30255_2Add-11_22009-12-09T18:30-17.250011.7167-42Multiple opening/closing net, 500 µm meshsize5030154762.340425532.02170.3617016.7131320.042551.27660
AFR258_30256_3 Add-10_32009-12-09T21:21-17.250011.5000-132Multiple opening/closing net, 500 µm meshsize21001251132280.454545451175.3181800.00000
AFR258_30256_3Add-10_32009-12-09T21:21-17.250011.5000-132Multiple opening/closing net, 500 µm meshsize360100805018.40000000178735.7400000.00000
AFR258_30256_3Add-10_32009-12-09T21:21-17.250011.5000-132Multiple opening/closing net, 500 µm meshsize430604532211.56250000141944.3437530.09375
AFR258_30256_3Add-10_32009-12-09T21:21-17.250011.5000-132Multiple opening/closing net, 500 µm meshsize5030154367.9069767411.133327.720933124.4949510.023263.51017
AFR258_30257_3 T-2-2_32009-12-10T02:46-17.250011.2000-820Multiple opening/closing net, 500 µm meshsize116020018026109.6153846010.0384610.03846
AFR258_30257_3T-2-2_32009-12-10T02:46-17.250011.2000-820Multiple opening/closing net, 500 µm meshsize212016014037122.4324324010.0270300.00000
AFR258_30257_3T-2-2_32009-12-10T02:46-17.250011.2000-820Multiple opening/closing net, 500 µm meshsize3701209577260.6493506040.0519500.00000
AFR258_30257_3T-2-2_32009-12-10T02:46-17.250011.2000-820Multiple opening/closing net, 500 µm meshsize43070504671.9565217490.1956560.13043
AFR258_30257_3T-2-2_32009-12-10T02:46-17.250011.2000-820Multiple opening/closing net, 500 µm meshsize50301549371.6326531036.34310.6326532.02262120.2449014.10279
AFR258_30258_4 Add-06_42009-12-10T11:54-17.250010.7833-2900Multiple opening/closing net, 500 µm meshsize114020017011640.5172413820.0172410.00862
AFR258_30258_4Add-06_42009-12-10T11:54-17.250010.7833-2900Multiple opening/closing net, 500 µm meshsize21201401304146.3414634120.0487820.04878
AFR258_30258_4Add-06_42009-12-10T11:54-17.250010.7833-2900Multiple opening/closing net, 500 µm meshsize3601209015855.8227848120.0126630.01899
AFR258_30258_4Add-06_42009-12-10T11:54-17.250010.7833-2900Multiple opening/closing net, 500 µm meshsize420604064132.656250000330.51563
AFR258_30258_4Add-06_42009-12-10T11:54-17.250010.7833-2900Multiple opening/closing net, 500 µm meshsize50201045164.8888889015.3102.76959270.6000035.25709
AFR258_30259_2 T-1-2_22009-12-10T19:06-17.230010.4800-3240Multiple opening/closing net, 500 µm meshsize114020017012594.8800000000.0000000.00000
AFR258_30259_2T-1-2_22009-12-10T19:06-17.230010.4800-3240Multiple opening/closing net, 500 µm meshsize2901401155759.8245614020.0350900.00000
AFR258_30259_2T-1-2_22009-12-10T19:06-17.230010.4800-3240Multiple opening/closing net, 500 µm meshsize355907313049.3846153800.0000010.00769
AFR258_30259_2T-1-2_22009-12-10T19:06-17.230010.4800-3240Multiple opening/closing net, 500 µm meshsize420553860126.3333333000.0000020.03333
AFR258_30259_2T-1-2_22009-12-10T19:06-17.230010.4800-3240Multiple opening/closing net, 500 µm meshsize50201023808.6956522031.0100.000001.75439130.5652212.74025
AFR258_30260_3 T-5-1a_32009-12-11T12:36-18.980010.5300-2070Multiple opening/closing net, 500 µm meshsize11402101757758.96103896270.3506500.00000
AFR258_30260_3T-5-1a_32009-12-11T12:36-18.980010.5300-2070Multiple opening/closing net, 500 µm meshsize21001401208372.1686747060.0722940.04819
AFR258_30260_3T-5-1a_32009-12-11T12:36-18.980010.5300-2070Multiple opening/closing net, 500 µm meshsize3601008013644.1176470610.0073510.00735
AFR258_30260_3T-5-1a_32009-12-11T12:36-18.980010.5300-2070Multiple opening/closing net, 500 µm meshsize430604538208.4210526010.0263220.05263
AFR258_30260_3T-5-1a_32009-12-11T12:36-18.980010.5300-2070Multiple opening/closing net, 500 µm meshsize50301544137.9545455019.1730.0681830.5660760.136367.89168
AFR258_30261_3 T-8-1a_32009-12-12T21:19-22.970011.7200-3094Multiple opening/closing net, 500 µm meshsize11802402106881.4705882420.0294160.08824
AFR258_30261_3T-8-1a_32009-12-12T21:19-22.970011.7200-3094Multiple opening/closing net, 500 µm meshsize21301801557566.40000000110.1466710.01333
AFR258_30261_3T-8-1a_32009-12-12T21:19-22.970011.7200-3094Multiple opening/closing net, 500 µm meshsize38013010511765.9829059840.0341920.01709
AFR258_30261_3T-8-1a_32009-12-12T21:19-22.970011.7200-3094Multiple opening/closing net, 500 µm meshsize420805082139.5121951010.0122040.04878
AFR258_30261_3T-8-1a_32009-12-12T21:19-22.970011.7200-3094Multiple opening/closing net, 500 µm meshsize50201025260.8000000025.0900.0000011.5391520.0800011.34231
AFR258_30262_3 T-8-1_32009-12-13T12:26-23.000013.3333-357Multiple opening/closing net, 500 µm meshsize11702402054330.6976744200.0000000.00000
AFR258_30262_3T-8-1_32009-12-13T12:26-23.000013.3333-357Multiple opening/closing net, 500 µm meshsize213017015050221.0000000010.0200000.00000
AFR258_30262_3T-8-1_32009-12-13T12:26-23.000013.3333-357Multiple opening/closing net, 500 µm meshsize3901301105861.2068965550.0862120.03448
AFR258_30262_3T-8-1_32009-12-13T12:26-23.000013.3333-357Multiple opening/closing net, 500 µm meshsize440906549483.4693878020.0408200.00000
AFR258_30262_3T-8-1_32009-12-13T12:26-23.000013.3333-357Multiple opening/closing net, 500 µm meshsize5040203119283.54839000808.9500.000006.2890910.032262.66963
AFR258_30263_2 T-8-3_22009-12-13T17:14-22.980013.6833-146Multiple opening/closing net, 500 µm meshsize210014012044309.09090910551.2500000.00000
AFR258_30263_2T-8-3_22009-12-13T17:14-22.980013.6833-146Multiple opening/closing net, 500 µm meshsize3501007511496.052631587286.38596200.17544
AFR258_30263_2T-8-3_22009-12-13T17:14-22.980013.6833-146Multiple opening/closing net, 500 µm meshsize4155033681388.6764710082912.1911880.11765
AFR258_30263_2T-8-3_22009-12-13T17:14-22.980013.6833-146Multiple opening/closing net, 500 µm meshsize50158711014.0845070080.986158.66197925.9190000.0000012.88958
AFR258_30264_3 T-8-4_32009-12-13T22:49-23.000014.0800-122Multiple opening/closing net, 500 µm meshsize270115939139.7802197820.02198
AFR258_30264_3T-8-4_32009-12-13T22:49-23.000014.0800-122Multiple opening/closing net, 500 µm meshsize330705011481.22807018380.33333
AFR258_30264_3T-8-4_32009-12-13T22:49-23.000014.0800-122Multiple opening/closing net, 500 µm meshsize415302329187.9310345010.0344820.06897
AFR258_30264_3T-8-4_32009-12-13T22:49-23.000014.0800-122Multiple opening/closing net, 500 µm meshsize5015824292.0833333012.240.5172400.0000015.35683
AFR258_30265_2 T-8-5_22009-12-14T01:41-23.000014.3200-65Multiple opening/closing net, 500 µm meshsize34060504743.6170212810.02128
AFR258_30265_2T-8-5_22009-12-14T01:41-23.000014.3200-65Multiple opening/closing net, 500 µm meshsize415402848413.33333330110.22917
AFR258_30265_2T-8-5_22009-12-14T01:41-23.000014.3200-65Multiple opening/closing net, 500 µm meshsize5015824670.4166667021.26984.0833367.40470
AFR258_30266_2 H-4_22009-12-15T03:32-26.783314.5000-298Multiple opening/closing net, 500 µm meshsize11902502206677.8787878810.0151500.00000
AFR258_30266_2H-4_22009-12-15T03:32-26.783314.5000-298Multiple opening/closing net, 500 µm meshsize211019015012922.7131782900.0000010.00775
AFR258_30266_2H-4_22009-12-15T03:32-26.783314.5000-298Multiple opening/closing net, 500 µm meshsize360110854721.7021276600.0000000.00000
AFR258_30266_2H-4_22009-12-15T03:32-26.783314.5000-298Multiple opening/closing net, 500 µm meshsize43060453350.9090909100.0000010.03030
AFR258_30266_2H-4_22009-12-15T03:32-26.783314.5000-298Multiple opening/closing net, 500 µm meshsize5030157824.358974369.8310.012821.2937110.012821.91386