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Franke, Kiara; Matthes, Lisa C; Graiff, Angelika; Karsten, Ulf; Bartsch, Inka (2023): Photosynthesis versus irradiance curves of Laminaria hyperborea off the island of Helgoland in summer 2014 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.958899, In: Franke, K et al. (2023): Dataset for estimating the photosynthetic oxygen production of Laminaria hyperborea off the island of Helgoland in summer 2014 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.958950

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Published: 2023-06-15DOI registered: 2023-07-14

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Abstract:
Laminaria hyperborea off the island of Helgoland (North Sea, Germany) was sampled along a depth gradient (0.5, 2, 4, 6 m) throughout summer 2014. Discs were cut from three different blade regions (5, 25 and 50 cm above the stipe-blade transition zone) and set into photosynthesis versus irradiance (PI) curves. Incident light was generated by a slide projector (Liesegang Dianfant, Leitz Prado, Germany) equipped with a halogen lamp (Osram Xenophot 400 W/36 V, Germany) and 11 Schott neutral gray filters. Eleven light steps were conducted between 0 and 560 µmol photons m-2 s-1. Dark respiration was measured first for 20 mins followed by increasing light steps in 10 min intervals. Oxygen concentration expressed in % air saturation was logged by the OxyView software (Presens, Regensburg, Germany) and corrected for air pressure, salinity and logged temperature according to Tengberg et al. (2006). During post-processing, the oxygen production rate for each photon flux density (PFD) level was calculated by plotting a linear regression model through all O2-values measured during the time interval, and was normalized to either fresh mass (FM, unit: µmol O2 g–1 h–1) or disc surface area (DA, unit: µmol O2 cm–2 h–1).
Keyword(s):
blade gradient; Chlorophyll a; depth gradient; diffuse attenuation coefficient; dry mass/area ratio; Fv/Fm; Helgoland; in situ PAR; Kelp; net primary production; oxygen evolution; photoacclimation; Photosynthesis versus irradiance curves; Primary production
Supplement to:
Franke, Kiara; Matthes, Lisa C; Graiff, Angelika; Karsten, Ulf; Bartsch, Inka (2023): The challenge of estimating kelp production in a turbid marine environment. Journal of Phycology, jpy.13327, https://doi.org/10.1111/jpy.13327
Related to:
Tengberg, Anders; Hovdenes, Jostein; Andersson, Henrik Johan; Brocandel, Olivier; Diaz, Robert; Hebert, David; Arnerich, Tony; Huber, Christian; Körtzinger, Arne; Khripounoff, Alexis; Rey, Francisco; Rönning, Christer; Schimanski, Jens; Sommer, Stefan; Stangelmayer, Achim (2006): Evaluation of a lifetime-based optode to measure oxygen in aquatic systems. Limnology and Oceanography-Methods, 4(2), 7-17, https://doi.org/10.4319/lom.2006.4.7
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 407670545: Seasonal kelp primary production at a rocky shore site: Integrating physiology and biochemistry into ecological modelling
Coverage:
Median Latitude: 54.192934 * Median Longitude: 7.872206 * South-bound Latitude: 54.190500 * West-bound Longitude: 7.858880 * North-bound Latitude: 54.197220 * East-bound Longitude: 7.877480
Date/Time Start: 2014-07-24T00:00:00 * Date/Time End: 2014-09-06T00:00:00
Minimum DEPTH, water: 0.45 m * Maximum DEPTH, water: 6.25 m
Event(s):
Helgoland_2014_5  * Latitude: 54.190500 * Longitude: 7.876380 * Date/Time: 2014-08-08T00:00:00 * Elevation: -0.5 m * Location: off Helgoland, North Sea * Campaign: Helgoland * Basis: Marine Station Helgoland * Method/Device: SCUBA-DIVE * Comment: Algae sampling in a radius of several meters
Helgoland_2014_6  * Latitude: 54.190517 * Longitude: 7.876083 * Date/Time Start: 2014-08-22T00:00:00 * Date/Time End: 2014-09-06T00:00:00 * Elevation: -1.9 m * Location: off Helgoland, North Sea * Campaign: Helgoland * Basis: Marine Station Helgoland * Method/Device: SCUBA-DIVE * Comment: Algae sampling in a radius of several meters
Helgoland_2014_7  * Latitude: 54.193500 * Longitude: 7.877480 * Date/Time Start: 2014-07-24T00:00:00 * Date/Time End: 2014-08-15T00:00:00 * Elevation: -4.2 m * Location: off Helgoland, North Sea * Campaign: Helgoland * Basis: Marine Station Helgoland * Method/Device: SCUBA-DIVE * Comment: Algae sampling in a radius of several meters
Comment:
Additional funding was provided by the Postdoctoral fellowship grant of the Fonds de recherche du Québec - Nature et technologies and the Weston Foundation.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEventMatthes, Lisa C
DEPTH, waterDepth watermMatthes, Lisa CGeocode
Laminaria hyperborea, blade regionL. hyperborea blade regcmMatthes, Lisa C
ReplicateReplMatthes, Lisa C
IrradianceEµmol photons/m2/sMatthes, Lisa CSlide projectorphotons
Oxygen production rate, per fresh massO2 prod/fmµmol/g/hMatthes, Lisa CCalculated, see abstractµmol O2/g/h
Oxygen production rate, per disc areaO2 prod/disc areaµmol/cm2/hMatthes, Lisa CCalculated, see abstractµmol O2/cm2/h
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2790 data points

Data

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


Event

Depth water [m]

L. hyperborea blade reg [cm]

Repl

E [µmol photons/m2/s]

O2 prod/fm [µmol/g/h]

O2 prod/disc area [µmol/cm2/h]
Helgoland_2014_5 0.452510.0-1.572702000-0.280661440
Helgoland_2014_50.452513.0-0.369700800-0.065976122
Helgoland_2014_50.452517.30.9739514300.173809570
Helgoland_2014_50.4525110.43.4844595500.621830204
Helgoland_2014_50.4525114.53.9794893200.710172301
Helgoland_2014_50.4525127.07.8336496801.397978627
Helgoland_2014_50.4525160.214.7499228002.632243924
Helgoland_2014_50.45251117.318.2009874003.248114543
Helgoland_2014_50.45251210.618.8798854003.369269419
Helgoland_2014_50.45251318.922.1895130003.959899438
Helgoland_2014_50.45251434.022.0763634003.939706959
Helgoland_2014_50.45251489.720.9236512003.733996076
Helgoland_2014_50.452520.0-2.392091180-0.538062448
Helgoland_2014_50.452523.5-0.693070230-0.155895004
Helgoland_2014_50.452527.10.4023188200.090495149
Helgoland_2014_50.4525212.31.4645142600.329418934
Helgoland_2014_50.4525215.32.7701294900.623096086
Helgoland_2014_50.4525229.15.8681995201.319957126
Helgoland_2014_50.4525259.910.0948522002.270674687
Helgoland_2014_50.45252121.013.3976162003.013578331
Helgoland_2014_50.45252207.014.6976991003.306011089
Helgoland_2014_50.45252307.015.2011355003.419251008
Helgoland_2014_50.45252416.714.1997950003.194015565
Helgoland_2014_50.45252559.916.6339929003.741549239
Helgoland_2014_50.452530.0-2.171551680-0.444354958
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Helgoland_2014_50.452536.3-0.246805920-0.050502797
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Helgoland_2014_50.4525321.32.3941876400.489911964
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Helgoland_2014_50.45253537.610.6664412002.182626413
Helgoland_2014_50.452540.0-1.995634000-0.423039294
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Helgoland_2014_50.45254434.011.5088256002.439668237
Helgoland_2014_50.45254537.610.2371140002.170087788
Helgoland_2014_50.452550.0-4.839785500-0.818286201
Helgoland_2014_50.452553.0-1.496389850-0.253001950
Helgoland_2014_50.452557.30.5129650100.086729503
Helgoland_2014_50.4525510.41.9087938200.322729105
Helgoland_2014_50.4525514.53.7898037600.640760654
Helgoland_2014_50.4525527.08.3728994201.415647047
Helgoland_2014_50.4525560.215.6431521002.644864224
Helgoland_2014_50.45255117.320.5621424003.476541965
Helgoland_2014_50.45255210.623.8613741003.476541965
Helgoland_2014_50.45255318.926.6455674004.505096379
Helgoland_2014_50.45255434.024.8317364004.198423100
Helgoland_2014_50.45255489.727.1606059004.592176446
Helgoland_2014_50.452560.0-2.937538040-0.560461552
Helgoland_2014_50.452563.5-1.149723470-0.219359135
Helgoland_2014_50.452567.1-0.132256250-0.025233559
Helgoland_2014_50.4525612.31.2765445300.243555699
Helgoland_2014_50.4525615.32.4505451800.467546747
Helgoland_2014_50.4525629.15.7116580801.089744104
Helgoland_2014_50.4525659.98.9988598901.716919040
Helgoland_2014_50.45256121.012.0316949002.295562581
Helgoland_2014_50.45256207.014.7905964002.821941545
Helgoland_2014_50.45256307.015.8732859003.028511068
Helgoland_2014_50.45256416.716.8711865003.218903459
Helgoland_2014_50.45256559.918.2669428003.485203928
Helgoland_2014_6 1.88510.0-1.239692314-0.400470000
Helgoland_2014_61.88512.8-0.827827239-0.267421020
Helgoland_2014_61.88516.3-0.451326494-0.145796350
Helgoland_2014_61.885110.10.2783862890.089929810
Helgoland_2014_61.885121.00.9498773080.306848030
Helgoland_2014_61.885131.82.4558802860.793346700
Helgoland_2014_61.885161.04.8934314991.580772390
Helgoland_2014_61.8851120.86.4227231832.074794230
Helgoland_2014_61.8851196.26.9738892212.252842720
Helgoland_2014_61.8851308.57.5910399262.452206860
Helgoland_2014_61.8851444.07.8433018942.533697480
Helgoland_2014_61.8851508.87.7501794162.503615230
Helgoland_2014_61.88520.0-1.244510694-0.355370850
Helgoland_2014_61.88523.5-0.330863153-0.094478190
Helgoland_2014_61.88527.11.2905395250.368514410
Helgoland_2014_61.885212.31.8918839250.540228700
Helgoland_2014_61.885215.32.8139453380.803523950
Helgoland_2014_61.885229.15.1213260721.462398040
Helgoland_2014_61.885259.97.6801331072.193067080
Helgoland_2014_61.8852121.09.9231724652.833568450
Helgoland_2014_61.8852207.010.5512432803.012914490
Helgoland_2014_61.8852307.012.6359038703.608190700
Helgoland_2014_61.8852416.713.9677703503.988506050
Helgoland_2014_61.8852559.914.3597578204.100438330
Helgoland_2014_61.88530.0-1.360888540-0.391720080
Helgoland_2014_61.88533.00.3144634160.090515590
Helgoland_2014_61.88537.30.8756746560.252055430
Helgoland_2014_61.885310.41.4982683750.431263680
Helgoland_2014_61.885314.51.9367146560.557466680
Helgoland_2014_61.885327.04.1508683751.194791800
Helgoland_2014_61.885360.28.8159368042.537591680
Helgoland_2014_61.8853117.310.5741063903.043665690
Helgoland_2014_61.8853210.611.6614531703.356649120
Helgoland_2014_61.8853318.911.7579113503.384413780
Helgoland_2014_61.8853434.012.6435728403.639343830
Helgoland_2014_61.8853489.712.8671804403.703707360
Helgoland_2014_61.88540.0-1.382870880-0.396768000
Helgoland_2014_61.88543.0-0.155172824-0.044521610
Helgoland_2014_61.88547.30.9884631050.283606180
Helgoland_2014_61.885410.41.0764350990.308846780
Helgoland_2014_61.885414.52.6995183970.774535830
Helgoland_2014_61.885427.04.5821190791.314684650
Helgoland_2014_61.885460.29.9748023402.861933380
Helgoland_2014_61.8854117.312.8294935603.680990820
Helgoland_2014_61.8854210.614.5801362504.183278740
Helgoland_2014_61.8854318.914.9760102304.296861440
Helgoland_2014_61.8854434.016.8454151104.833224170
Helgoland_2014_61.8854489.715.8513315704.548005400
Helgoland_2014_61.88550.0-2.089800943-0.577963450
Helgoland_2014_61.88553.5-0.714663887-0.197650220
Helgoland_2014_61.88557.1-0.360010946-0.099566020
Helgoland_2014_61.885512.30.1964857470.054340860
Helgoland_2014_61.885515.31.0381295060.287109120
Helgoland_2014_61.885529.14.2115404011.164759940
Helgoland_2014_61.885559.98.3553711502.310793840
Helgoland_2014_61.8855121.011.2252383903.104495450
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Helgoland_2014_61.8855559.916.9281797104.681723010
Helgoland_2014_61.88560.0-1.800458993-0.590661590
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Helgoland_2014_61.88566.3-0.471420216-0.154654910
Helgoland_2014_61.885610.10.5280098030.173219780
Helgoland_2014_61.885621.01.9311005940.633520090
Helgoland_2014_61.885631.83.3577068731.101534940
Helgoland_2014_61.885661.05.4388275711.784270880
Helgoland_2014_61.8856120.87.1123464752.333288290
Helgoland_2014_61.8856196.27.2456009082.377003960
Helgoland_2014_61.8856308.59.0014240202.953022230
Helgoland_2014_61.8856444.08.0686429922.647012530
Helgoland_2014_61.8856508.89.2248211583.026310270
Helgoland_2014_61.882510.0-1.456790806-0.270565000
Helgoland_2014_61.882513.00.5553094780.103135893
Helgoland_2014_61.882517.31.1057113950.205360319
Helgoland_2014_61.8825110.42.3695972770.440097891
Helgoland_2014_61.8825114.52.3560071060.437573831
Helgoland_2014_61.8825127.06.2631812051.163241056
Helgoland_2014_61.8825160.211.4274461002.122383822
Helgoland_2014_61.88251117.314.3017672202.656222493
Helgoland_2014_61.88251210.616.8431291603.128221697
Helgoland_2014_61.88251318.918.4467693103.426060767
Helgoland_2014_61.88251434.017.9439329903.332670550
Helgoland_2014_61.88251489.719.6970650203.658274278
Helgoland_2014_61.882520.0-2.132079736-0.419277707
Helgoland_2014_61.882522.8-0.658504108-0.129496138
Helgoland_2014_61.882526.30.7059702460.138830448
Helgoland_2014_61.8825210.13.2181333110.632852295
Helgoland_2014_61.8825221.03.9322507300.773284901
Helgoland_2014_61.8825231.87.3944450041.454132269
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Helgoland_2014_61.882530.0-1.850801480-0.335019528
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Helgoland_2014_61.882537.10.8131658900.147193773
Helgoland_2014_61.8825312.31.8390900170.332899598
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Helgoland_2014_61.882540.0-3.166161973-0.548708423
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Helgoland_2014_61.882547.10.6805311440.117938745
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Helgoland_2014_61.885020.0-2.066261788-0.293281739
Helgoland_2014_61.885023.00.9222354190.130900552
Helgoland_2014_61.885027.32.5760351960.365638123
Helgoland_2014_61.8850210.43.6341113970.515819688
Helgoland_2014_61.8850214.56.1503766480.872974166
Helgoland_2014_61.8850227.010.0092427901.420695167
Helgoland_2014_61.8850260.218.7672684902.663794673
Helgoland_2014_61.88502117.326.2360416803.723899836
Helgoland_2014_61.88502210.627.0896157503.845054712
Helgoland_2014_61.88502318.933.5269869304.758764400
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Helgoland_2014_61.88502489.733.2869192204.724689591
Helgoland_2014_61.885030.0-1.881476348-0.217405835
Helgoland_2014_61.885032.8-1.066431163-0.123226826
Helgoland_2014_61.885036.31.2014682350.138830448
Helgoland_2014_61.8850310.13.1655342200.365779571
Helgoland_2014_61.8850321.07.7230354020.892401844
Helgoland_2014_61.8850331.89.7956133211.131889592
Helgoland_2014_61.8850361.015.7746208201.822767860
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