Pehlke, Constanze; Bartsch, Inka (2023): Depth distribution and biomass of sublittoral seaweeds at the island of Helgoland in 2005 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.962211
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Abstract:
In 2005, the species composition and spatial distribution of the seaweed community were investigated in the frame of diving surveys along a sublittoral transect in the North of Helgoland that had been investigated ~40 years earlier by Lüning (1970). The cover of dominant brown seaweeds, Fucus serratus, Sargassum muticum, Laminaria digitata, L. hyperborea and Saccharina latissima, was semi-quantitatively assessed to define vegetation zones. Within each zone, all macroalgal species were estimated quantitatively in 3 to 6 random 1 m² quadrats. Additionally, a replicated biomass survey was performed at 6 depths (0.5, 2, 4, 6, 8 and 10 m below mean low water spring tide). The survey investigated the occurrence, cover and relative frequency of the algae community and information about fresh mass and dry mass were obtained. For kelps also stipe length, blade area, blade fresh mass, age and fresh mass of epiphytes was recorded.
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Related to:
Gehling, Constanze (2006): Qualitative und quantitative Analyse des Laminarienwaldes vor Helgoland - ein Vergleich zu 1970. University of Bremen, Bremen, Germany, Gehling_2006.pdf
Lüning, K (1970): Tauchuntersuchungen zur Vertikalverteilung der sublitoralen
Helgoländer Algenvegetation. 21(3), 271-291, https://doi.org/10.1007/BF01609062
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
Coverage:
Median Latitude: 54.194716 * Median Longitude: 7.860971 * South-bound Latitude: 54.189583 * West-bound Longitude: 7.850817 * North-bound Latitude: 54.202183 * East-bound Longitude: 7.868017
Date/Time Start: 2005-04-21T13:50:00 * Date/Time End: 2005-08-19T12:43:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3 datasets
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Datasets listed in this bundled publication
- Pehlke, C; Bartsch, I (2023): Algal information along a transect at the island of Helgoland in 2005. https://doi.org/10.1594/PANGAEA.962216
- Pehlke, C; Bartsch, I (2023): Frequency of algae along a transect at the island of Helgoland in 2005. https://doi.org/10.1594/PANGAEA.962215
- Pehlke, C; Bartsch, I (2023): Occurrence and cover of algae along a transect at the island of Helgoland in 2005. https://doi.org/10.1594/PANGAEA.962213