Citation:

PANGAEA.958950

Name: Net primary production of Laminaria hyperborea along the vertical depth profile based on different diffuse attenuation coefficients
Published: 2023-06-15
License: https://creativecommons.org/licenses/by/4.0/
Keywords: 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

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

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Abstract:

Over the whole water column, daily diffuse attenuation coefficient (Kd in 1/m) values are based on in situ photosynthetically active radiation (PAR) measurements performed in different depths (1.2, 2.9, 4.4, 6.6 m) during summer 2014. PAR for the algae collection depths is calculated based on daily Kd values. Daily net primary production (NPP in g C/m² seafloor/day) for each sampling depth is calculated with in situ vertical profiles based on daily Kd, leaf area index (Pehlke and Bartsch, 2008) and a photosynthetic quotient (PQ) of 1.18 (Miller III et al. 2009). For comparative purposes, daily NPP values were also calculated using the measured maximum and minimum daily Kd and the mean Kd, which were derived from all daily Kd over the entire sampling period.

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:

Miller, Harlan L III; Neale, Patrick J; Dunton, Kenneth H (2009): Biological weighting functions for UV inhibition of photosynthesis in kelp Laminaria hyperborea (Phaeophyceae). Journal of Phycology, 45(3), 571-584, https://doi.org/10.1111/j.1529-8817.2009.00694.x

Pehlke, Constanze; Bartsch, Inka (2008): Changes in depth distribution and biomass of sublittoral seaweeds at Helgoland (North Sea) between 1970 and 2005. Climate Research, 37, 135-147, https://doi.org/10.3354/cr00767

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: 54.193043 * Median Longitude: 7.878357 * South-bound Latitude: 54.192530 * West-bound Longitude: 7.877530 * North-bound Latitude: 54.193700 * East-bound Longitude: 7.879000

Date/Time Start: 2014-07-18T00:00:00 * Date/Time End: 2014-09-11T00:00:00

Minimum DEPTH, water: 0.5 m * Maximum DEPTH, water: 6.0 m

Event(s):

Helgoland_2014_1 * Latitude: 54.192530 * Longitude: 7.879000 * Date/Time Start: 2014-07-17T17:15:00 * Date/Time End: 2014-09-12T11:30:00 * Elevation: -1.2 m * Location: off Helgoland, North Sea * Campaign: * Basis: Marine Station Helgoland * Method/Device: (UQS)

Helgoland_2014_2 * Latitude: 54.192970 * Longitude: 7.878450 * Date/Time Start: 2014-07-17T17:15:00 * Date/Time End: 2014-09-12T11:30:00 * Elevation: -2.9 m * Location: off Helgoland, North Sea * Campaign: * Basis: Marine Station Helgoland * Method/Device: (UQS)

Helgoland_2014_3 * Latitude: 54.192970 * Longitude: 7.878450 * Date/Time Start: 2014-07-17T17:15:00 * Date/Time End: 2014-09-12T11:30:00 * Elevation: -4.4 m * Location: off Helgoland, North Sea * Campaign: * Basis: Marine Station Helgoland * Method/Device: (UQS)

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	DATE/TIME	Date/Time		Matthes, Lisa C		Geocode – Date
2	Diffuse attenuation coefficient	Kd	1/m	Matthes, Lisa C	Calculated, see abstract
3	Comment	Comment		Matthes, Lisa C
4	DEPTH, water	Depth water	m	Matthes, Lisa C	Calculated, see abstract	Geocode
5	Net primary production of carbon	NPP C	g/m²/day	Matthes, Lisa C	Calculated, see abstract

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

2400 data points

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