Franke, Kiara; Matthes, Lisa C; Graiff, Angelika; Karsten, Ulf; Bartsch, Inka (2023): Chlorophyll a content of Laminaria hyperborea off the island of Helgoland in summer 2014 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.958897, 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: 2023-06-15 • DOI registered: 2023-07-14
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. Chlorophyll a content was measured. Discs were cut from three different blade regions (5, 25 and 50 cm above the stipe-blade transition zone) and normalized to either dry mass, fresh mass or disc area. The samples were freeze-dried for approximately 36 h (Beta 1–8 LDplus, Christ, Osterode am Harz, Germany), finely ground for several minutes using steel grinding balls (3 mm diameter) in a Mikro-Dismembrator U (Braun Biontech International, Melsungen, Germany), cooled centrifuged (Centrifuge 3K10, Sigma, Osterode, Germany), and measured in the spectrophotometer (U-3310, Hitachi High-Tech, Japan) at two wavelengths (347 and 664.5 nm).
Keyword(s):
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
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):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Matthes, Lisa C | |||
| 2 | DEPTH, water | Depth water | m | Matthes, Lisa C | Geocode | |
| 3 | Laminaria hyperborea, blade region | L. hyperborea blade reg | cm | Matthes, Lisa C | ||
| 4 | Replicate | Repl | Matthes, Lisa C | |||
| 5 | Chlorophyll a, per dry mass | Chl a/dm | mg/g | Matthes, Lisa C | Spectrophotometer, Hitachi High-Tech, U-3310 | |
| 6 | Chlorophyll a per fresh mass | Chl a/fm | mg/g | Matthes, Lisa C | Spectrophotometer, Hitachi High-Tech, U-3310 | |
| 7 | Chlorophyll a per disc area | Chl a/disc area | mg/cm2 | Matthes, Lisa C | Spectrophotometer, Hitachi High-Tech, U-3310 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
240 data points
Data
| 1 Event | 2 Depth water [m] | 3 L. hyperborea blade reg [cm] | 4 Repl | 5 Chl a/dm [mg/g] | 6 Chl a/fm [mg/g] | 7 Chl a/disc area [mg/cm2] |
|---|---|---|---|---|---|---|
| Helgoland_2014_5 | 0.45 | 25 | 1 | 1.280 | 0.063 | 0.011 |
| Helgoland_2014_5 | 0.45 | 25 | 2 | 0.705 | 0.028 | 0.006 |
| Helgoland_2014_5 | 0.45 | 25 | 3 | 1.144 | 0.049 | 0.010 |
| Helgoland_2014_5 | 0.45 | 25 | 4 | 2.223 | 0.091 | 0.019 |
| Helgoland_2014_5 | 0.45 | 25 | 5 | 1.222 | 0.063 | 0.011 |
| Helgoland_2014_5 | 0.45 | 25 | 6 | 1.210 | 0.056 | 0.011 |
| Helgoland_2014_6 | 1.88 | 5 | 1 | 0.804 | 0.033 | 0.011 |
| Helgoland_2014_6 | 1.88 | 5 | 2 | 1.266 | 0.058 | 0.017 |
| Helgoland_2014_6 | 1.88 | 5 | 3 | 1.223 | 0.056 | 0.016 |
| Helgoland_2014_6 | 1.88 | 5 | 4 | 1.345 | 0.063 | 0.018 |
| Helgoland_2014_6 | 1.88 | 5 | 5 | 1.247 | 0.060 | 0.016 |
| Helgoland_2014_6 | 1.88 | 5 | 6 | 0.729 | 0.029 | 0.010 |
| Helgoland_2014_6 | 1.88 | 25 | 1 | 0.728 | 0.034 | 0.006 |
| Helgoland_2014_6 | 1.88 | 25 | 2 | 0.862 | 0.038 | 0.007 |
| Helgoland_2014_6 | 1.88 | 25 | 3 | 1.156 | 0.057 | 0.010 |
| Helgoland_2014_6 | 1.88 | 25 | 4 | 1.067 | 0.054 | 0.009 |
| Helgoland_2014_6 | 1.88 | 25 | 5 | 0.746 | 0.036 | 0.007 |
| Helgoland_2014_6 | 1.88 | 25 | 6 | 0.451 | 0.020 | 0.004 |
| Helgoland_2014_6 | 1.88 | 50 | 1 | 0.857 | 0.025 | 0.004 |
| Helgoland_2014_6 | 1.88 | 50 | 2 | 2.056 | 0.062 | 0.009 |
| Helgoland_2014_6 | 1.88 | 50 | 3 | 2.259 | 0.082 | 0.009 |
| Helgoland_2014_6 | 1.88 | 50 | 4 | 1.969 | 0.070 | 0.009 |
| Helgoland_2014_6 | 1.88 | 50 | 5 | 2.146 | 0.074 | 0.009 |
| Helgoland_2014_6 | 1.88 | 50 | 6 | 1.924 | 0.061 | 0.008 |
| Helgoland_2014_7 | 4.25 | 5 | 1 | 0.778 | 0.043 | 0.013 |
| Helgoland_2014_7 | 4.25 | 5 | 2 | 0.999 | 0.046 | 0.014 |
| Helgoland_2014_7 | 4.25 | 5 | 3 | 1.068 | 0.065 | 0.018 |
| Helgoland_2014_7 | 4.25 | 5 | 4 | 0.801 | 0.038 | 0.012 |
| Helgoland_2014_7 | 4.25 | 5 | 5 | 0.847 | 0.040 | 0.012 |
| Helgoland_2014_7 | 4.25 | 5 | 6 | 1.127 | 0.057 | 0.015 |
| Helgoland_2014_7 | 4.25 | 25 | 1 | 1.329 | 0.068 | 0.012 |
| Helgoland_2014_7 | 4.25 | 25 | 2 | 1.321 | 0.058 | 0.012 |
| Helgoland_2014_7 | 4.25 | 25 | 3 | 1.303 | 0.058 | 0.012 |
| Helgoland_2014_7 | 4.25 | 25 | 4 | 1.158 | 0.050 | 0.011 |
| Helgoland_2014_7 | 4.25 | 25 | 5 | 1.046 | 0.050 | 0.010 |
| Helgoland_2014_7 | 4.25 | 25 | 6 | 1.088 | 0.053 | 0.010 |
| Helgoland_2014_7 | 4.25 | 50 | 1 | 1.898 | 0.065 | 0.008 |
| Helgoland_2014_7 | 4.25 | 50 | 2 | 2.219 | 0.075 | 0.010 |
| Helgoland_2014_7 | 4.25 | 50 | 3 | 2.223 | 0.077 | 0.010 |
| Helgoland_2014_7 | 4.25 | 50 | 4 | 2.497 | 0.090 | 0.011 |
| Helgoland_2014_7 | 4.25 | 50 | 5 | 1.819 | 0.068 | 0.009 |
| Helgoland_2014_7 | 4.25 | 50 | 6 | 1.916 | 0.074 | 0.010 |
| Helgoland_2014_8 | 6.25 | 25 | 1 | 1.905 | 0.112 | 0.016 |
| Helgoland_2014_8 | 6.25 | 25 | 2 | 0.991 | 0.046 | 0.009 |
| Helgoland_2014_8 | 6.25 | 25 | 3 | 1.135 | 0.055 | 0.010 |
| Helgoland_2014_8 | 6.25 | 25 | 4 | 1.412 | 0.073 | 0.013 |
| Helgoland_2014_8 | 6.25 | 25 | 5 | 1.241 | 0.054 | 0.011 |
| Helgoland_2014_8 | 6.25 | 25 | 6 | 0.910 | 0.041 | 0.008 |