Pehlke, Constanze; Bartsch, Inka (2023): Frequency of algae along a transect at the island of Helgoland in 2005 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.962215, In: Pehlke, C; Bartsch, I (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:
A sublittoral transect (P3) in the North of Helgoland that had been investigated ~40 years earlier by Lüning (1970) was traversed again. Scuba dives were carried out between 24.06.2005 and 19.08.2005. For each sampling point, time, date and coordinates were given as well as the corrected depth in m mean low water spring tide. Along the transect, substrate and topography were recorded. Relative frequency and cover of 32 species grown attached to the seafloor and cover of 12 epiphytic species were obtained.
Keyword(s):
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: 54.193378 * Median Longitude: 7.862815 * South-bound Latitude: 54.189600 * West-bound Longitude: 7.855933 * North-bound Latitude: 54.198467 * East-bound Longitude: 7.868000
Date/Time Start: 2005-06-24T11:23:00 * Date/Time End: 2005-08-19T12:43:00
Minimum DEPTH, water: -0.45 m * Maximum DEPTH, water: 12.50 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Geocode | |||
| 2 | LONGITUDE | Longitude | Geocode – coordinates from ship Diker | |||
| 3 | LATITUDE | Latitude | Geocode – coordinates from ship Diker | |||
| 4 | DEPTH, water | Depth water | m | Geocode – corrected depth below MLWS (mean low water spring tide) | ||
| 5 | Substrate type | Substrate | Buntsandstein (red sandstone) (BSS), Muschelkies (mussel gravel) (MK), Kreide (chalk), Granit (granite), Muschelkalk (limestone) | |||
| 6 | Topography | Topo | ||||
| 7 | Fucus serratus | F. serratus | Counting | growing on seafloor | ||
| 8 | Fucus serratus, cover | F. serratus cov | % | Counting | growing on seafloor | |
| 9 | Laminaria digitata | L. digitata | Counting | growing on seafloor | ||
| 10 | Laminaria digitata, cover | L. digitata cov | % | Counting | growing on seafloor | |
| 11 | Saccharina latissima | S. latissima | Counting | growing on seafloor | ||
| 12 | Saccharina latissima, cover | S. latissima cov | % | Counting | growing on seafloor | |
| 13 | Laminaria hyperborea | L. hyperborea | Counting | growing on seafloor | ||
| 14 | Laminaria hyperborea, cover | L. hyperborea cov | % | Counting | growing on seafloor | |
| 15 | Phymatolithon sp. | Phymatolithon sp. | Counting | growing on seafloor | ||
| 16 | Phymatolithon sp., cover | Phymatolithon sp. cov | % | Counting | growing on seafloor | |
| 17 | Hildenbrandia rubra | H. rubra | Counting | growing on seafloor | ||
| 18 | Hildenbrandia rubra, cover | H. rubra cov | % | Counting | growing on seafloor | |
| 19 | Cladophora rupestris | C. rupestris | Counting | growing on seafloor | ||
| 20 | Cladophora rupestris, cover | C. rupestris cov | % | Counting | growing on seafloor | |
| 21 | Phyllophora pseudoceranoides | P. pseudoceranoides | Counting | growing on seafloor | ||
| 22 | Phyllophora pseudoceranoides, cover | P. pseudoceranoides cov | % | Counting | growing on seafloor | |
| 23 | Erythrodermis traillii | E. traillii | Counting | growing on seafloor | ||
| 24 | Erythrodermis traillii, cover | E. traillii cov | % | Counting | growing on seafloor | |
| 25 | Chondrus crispus | C. crispus | Counting | growing on seafloor | ||
| 26 | Chondrus crispus, cover | C. crispus cov | % | Counting | growing on seafloor | |
| 27 | Corallina officinalis | C. officinalis | Counting | growing on seafloor | ||
| 28 | Corallina officinalis, cover | C. officinalis cov | % | Counting | growing on seafloor | |
| 29 | Membranoptera alata | M. alata | Counting | growing on seafloor | ||
| 30 | Membranoptera alata, cover | M. alata cov | % | Counting | growing on seafloor | |
| 31 | Rhodomela confervoides | R. confervoides | Counting | growing on seafloor | ||
| 32 | Rhodomela confervoides, cover | R. confervoides cov | % | Counting | growing on seafloor | |
| 33 | Ahnfeltia plicata | A. plicata | Counting | growing on seafloor | ||
| 34 | Ahnfeltia plicata, cover | A. plicata cov | % | Counting | growing on seafloor | |
| 35 | Delesseria sanguinea | D. sanguinea | Counting | growing on seafloor | ||
| 36 | Delesseria sanguinea, cover | D. sanguinea cov | % | Counting | growing on seafloor | |
| 37 | Vertebrata byssoides | V. byssoides | Counting | growing on seafloor | ||
| 38 | Vertebrata byssoides, cover | V. byssoides cov | % | Counting | growing on seafloor | |
| 39 | Rock | Rock | Counting | growing on seafloor | ||
| 40 | Rock, cover | Rock cov | % | Counting | growing on seafloor | |
| 41 | Bonnemaisonia hamifera | B. hamifera | Counting | growing on seafloor | ||
| 42 | Bonnemaisonia hamifera, cover | B. hamifera cov | % | Counting | growing on seafloor | |
| 43 | Plocamium cartilagineum | P. cartilagineum | Counting | growing on seafloor | ||
| 44 | Plocamium cartilagineum, cover | P. cartilagineum cov | % | Counting | growing on seafloor | |
| 45 | Chaetomorpha melagonium | C. melagonium | Counting | growing on seafloor | ||
| 46 | Chaetomorpha melagonium, cover | C. melagonium cov | % | Counting | growing on seafloor | |
| 47 | Cystoclonium purpureum | C. purpureum | Counting | growing on seafloor | ||
| 48 | Cystoclonium purpureum, cover | C. purpureum cov | % | Counting | growing on seafloor | |
| 49 | Polysiphonia stricta | P: stricta | Counting | growing on seafloor | ||
| 50 | Polysiphonia stricta, cover | P. stricta cov | % | Counting | growing on seafloor | |
| 51 | Ulva sp. | Ulva sp. | Counting | growing on seafloor | ||
| 52 | Ulva sp., cover | Ulva sp. cov | % | Counting | growing on seafloor | |
| 53 | Sargassum muticum | S. muticum | Counting | growing on seafloor | ||
| 54 | Sargassum muticum, cover | S. muticum cov | % | Counting | growing on seafloor | |
| 55 | Lomentaria clavellosa | L. clavellosa | Counting | growing on seafloor | ||
| 56 | Lomentaria clavellosa, cover | L. clavellosa cov | % | Counting | growing on seafloor | |
| 57 | Lomentaria orcadensis | L. orcadensis | Counting | growing on seafloor | ||
| 58 | Lomentaria orcadensis, cover | L. orcadensis cov | % | Counting | growing on seafloor | |
| 59 | Pterothamnion crispum | P. crispum | Counting | growing on seafloor | ||
| 60 | Pterothamnion crispum, cover | P. crispum cov | % | Counting | growing on seafloor | |
| 61 | Desmarestia viridis | D. viridis | Counting | growing on seafloor | ||
| 62 | Desmarestia viridis, cover | D. viridis cov | % | Counting | growing on seafloor | |
| 63 | Desmarestia aculeata | D. aculeata | Counting | growing on seafloor | ||
| 64 | Desmarestia aculeata, cover | D. aculeata cov | % | Counting | growing on seafloor | |
| 65 | Halarachnion ligulatum | H. ligulatum | Counting | growing on seafloor | ||
| 66 | Halarachnion ligulatum, cover | H. ligulatum cov | % | Counting | growing on seafloor | |
| 67 | Ceramium virgatum | C. virgatum | Counting | growing on seafloor | ||
| 68 | Ceramium virgatum, cover | C. virgatum cov | % | Counting | growing on seafloor | |
| 69 | Polyides rotundus | P. rotundus | Counting | growing on seafloor | ||
| 70 | Polyides rotundus, cover | P. rotundus cov | % | Counting | growing on seafloor | |
| 71 | Rhodochorton purpureum | R. purpureum | Counting | growing on seafloor | ||
| 72 | Rhodochorton purpureum, cover | R. purpureum cov | % | Counting | growing on seafloor | |
| 73 | Electra pilosa, cover | E. pilosa cov | % | Counting | growing on Laminaria hyperborea | |
| 74 | Delesseria sanguinea, cover | D. sanguinea cov | % | Counting | growing on Laminaria hyperborea | |
| 75 | Laminaria sp., cover | Laminaria sp. cov | % | Counting | growing on Laminaria hyperborea | |
| 76 | Ulva lactuca, cover | U. lactuca cov | % | Counting | growing on Laminaria hyperborea | |
| 77 | Polysiphonia stricta, cover | P. stricta cov | % | Counting | growing on Laminaria hyperborea | |
| 78 | Membranoptera alata, cover | M. alata cov | % | Counting | growing on Laminaria hyperborea | |
| 79 | Hydroidpolypen, cover | Hydroidpolypen cov | % | Counting | growing on Laminaria hyperborea | |
| 80 | Pterothamnion crispum, cover | P. crispum cov | % | Counting | growing on Laminaria hyperborea | |
| 81 | Porphyropsis coccinea, cover | P. coccinea cov | % | Counting | growing on Laminaria hyperborea | |
| 82 | Membranipora membranaceae, cover | M. membranaceae cov | % | Counting | growing on Laminaria hyperborea | |
| 83 | Phymatolithon lenormandii, cover | P. lenormandii cov | % | Counting | growing on Laminaria hyperborea | |
| 84 | Plocamium cartilagineum, cover | P. cartilagineum cov | % | Counting | growing on Laminaria hyperborea |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1910 data points