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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):
algae community; Biomass; cover; distribution; fresh mass; Helgoland; kelp; leaf area index (LAI); Macroalgae; occurence; relative frequency
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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
DATE/TIMEDate/TimeGeocode
LONGITUDELongitudeGeocode – coordinates from ship Diker
LATITUDELatitudeGeocode – coordinates from ship Diker
DEPTH, waterDepth watermGeocode – corrected depth below MLWS (mean low water spring tide)
Substrate typeSubstrateBuntsandstein (red sandstone) (BSS), Muschelkies (mussel gravel) (MK), Kreide (chalk), Granit (granite), Muschelkalk (limestone)
TopographyTopo
Fucus serratusF. serratusCountinggrowing on seafloor
Fucus serratus, coverF. serratus cov%Countinggrowing on seafloor
Laminaria digitataL. digitataCountinggrowing on seafloor
10 Laminaria digitata, coverL. digitata cov%Countinggrowing on seafloor
11 Saccharina latissimaS. latissimaCountinggrowing on seafloor
12 Saccharina latissima, coverS. latissima cov%Countinggrowing on seafloor
13 Laminaria hyperboreaL. hyperboreaCountinggrowing on seafloor
14 Laminaria hyperborea, coverL. hyperborea cov%Countinggrowing on seafloor
15 Phymatolithon sp.Phymatolithon sp.Countinggrowing on seafloor
16 Phymatolithon sp., coverPhymatolithon sp. cov%Countinggrowing on seafloor
17 Hildenbrandia rubraH. rubraCountinggrowing on seafloor
18 Hildenbrandia rubra, coverH. rubra cov%Countinggrowing on seafloor
19 Cladophora rupestrisC. rupestrisCountinggrowing on seafloor
20 Cladophora rupestris, coverC. rupestris cov%Countinggrowing on seafloor
21 Phyllophora pseudoceranoidesP. pseudoceranoidesCountinggrowing on seafloor
22 Phyllophora pseudoceranoides, coverP. pseudoceranoides cov%Countinggrowing on seafloor
23 Erythrodermis trailliiE. trailliiCountinggrowing on seafloor
24 Erythrodermis traillii, coverE. traillii cov%Countinggrowing on seafloor
25 Chondrus crispusC. crispusCountinggrowing on seafloor
26 Chondrus crispus, coverC. crispus cov%Countinggrowing on seafloor
27 Corallina officinalisC. officinalisCountinggrowing on seafloor
28 Corallina officinalis, coverC. officinalis cov%Countinggrowing on seafloor
29 Membranoptera alataM. alataCountinggrowing on seafloor
30 Membranoptera alata, coverM. alata cov%Countinggrowing on seafloor
31 Rhodomela confervoidesR. confervoidesCountinggrowing on seafloor
32 Rhodomela confervoides, coverR. confervoides cov%Countinggrowing on seafloor
33 Ahnfeltia plicataA. plicataCountinggrowing on seafloor
34 Ahnfeltia plicata, coverA. plicata cov%Countinggrowing on seafloor
35 Delesseria sanguineaD. sanguineaCountinggrowing on seafloor
36 Delesseria sanguinea, coverD. sanguinea cov%Countinggrowing on seafloor
37 Vertebrata byssoidesV. byssoidesCountinggrowing on seafloor
38 Vertebrata byssoides, coverV. byssoides cov%Countinggrowing on seafloor
39 RockRockCountinggrowing on seafloor
40 Rock, coverRock cov%Countinggrowing on seafloor
41 Bonnemaisonia hamiferaB. hamiferaCountinggrowing on seafloor
42 Bonnemaisonia hamifera, coverB. hamifera cov%Countinggrowing on seafloor
43 Plocamium cartilagineumP. cartilagineumCountinggrowing on seafloor
44 Plocamium cartilagineum, coverP. cartilagineum cov%Countinggrowing on seafloor
45 Chaetomorpha melagoniumC. melagoniumCountinggrowing on seafloor
46 Chaetomorpha melagonium, coverC. melagonium cov%Countinggrowing on seafloor
47 Cystoclonium purpureumC. purpureumCountinggrowing on seafloor
48 Cystoclonium purpureum, coverC. purpureum cov%Countinggrowing on seafloor
49 Polysiphonia strictaP: strictaCountinggrowing on seafloor
50 Polysiphonia stricta, coverP. stricta cov%Countinggrowing on seafloor
51 Ulva sp.Ulva sp.Countinggrowing on seafloor
52 Ulva sp., coverUlva sp. cov%Countinggrowing on seafloor
53 Sargassum muticumS. muticumCountinggrowing on seafloor
54 Sargassum muticum, coverS. muticum cov%Countinggrowing on seafloor
55 Lomentaria clavellosaL. clavellosaCountinggrowing on seafloor
56 Lomentaria clavellosa, coverL. clavellosa cov%Countinggrowing on seafloor
57 Lomentaria orcadensisL. orcadensisCountinggrowing on seafloor
58 Lomentaria orcadensis, coverL. orcadensis cov%Countinggrowing on seafloor
59 Pterothamnion crispumP. crispumCountinggrowing on seafloor
60 Pterothamnion crispum, coverP. crispum cov%Countinggrowing on seafloor
61 Desmarestia viridisD. viridisCountinggrowing on seafloor
62 Desmarestia viridis, coverD. viridis cov%Countinggrowing on seafloor
63 Desmarestia aculeataD. aculeataCountinggrowing on seafloor
64 Desmarestia aculeata, coverD. aculeata cov%Countinggrowing on seafloor
65 Halarachnion ligulatumH. ligulatumCountinggrowing on seafloor
66 Halarachnion ligulatum, coverH. ligulatum cov%Countinggrowing on seafloor
67 Ceramium virgatumC. virgatumCountinggrowing on seafloor
68 Ceramium virgatum, coverC. virgatum cov%Countinggrowing on seafloor
69 Polyides rotundusP. rotundusCountinggrowing on seafloor
70 Polyides rotundus, coverP. rotundus cov%Countinggrowing on seafloor
71 Rhodochorton purpureumR. purpureumCountinggrowing on seafloor
72 Rhodochorton purpureum, coverR. purpureum cov%Countinggrowing on seafloor
73 Electra pilosa, coverE. pilosa cov%Countinggrowing on Laminaria hyperborea
74 Delesseria sanguinea, coverD. sanguinea cov%Countinggrowing on Laminaria hyperborea
75 Laminaria sp., coverLaminaria sp. cov%Countinggrowing on Laminaria hyperborea
76 Ulva lactuca, coverU. lactuca cov%Countinggrowing on Laminaria hyperborea
77 Polysiphonia stricta, coverP. stricta cov%Countinggrowing on Laminaria hyperborea
78 Membranoptera alata, coverM. alata cov%Countinggrowing on Laminaria hyperborea
79 Hydroidpolypen, coverHydroidpolypen cov%Countinggrowing on Laminaria hyperborea
80 Pterothamnion crispum, coverP. crispum cov%Countinggrowing on Laminaria hyperborea
81 Porphyropsis coccinea, coverP. coccinea cov%Countinggrowing on Laminaria hyperborea
82 Membranipora membranaceae, coverM. membranaceae cov%Countinggrowing on Laminaria hyperborea
83 Phymatolithon lenormandii, coverP. lenormandii cov%Countinggrowing on Laminaria hyperborea
84 Plocamium cartilagineum, coverP. cartilagineum cov%Countinggrowing on Laminaria hyperborea
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1910 data points

Data

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


Date/Time

Longitude
(coordinates from ship Diker)

Latitude
(coordinates from ship Diker)

Depth water [m]
(corrected depth below MLWS (m...)

Substrate
(Buntsandstein (red sandstone)...)

Topo

F. serratus
(growing on seafloor)

F. serratus cov [%]
(growing on seafloor)

L. digitata
(growing on seafloor)
10 
L. digitata cov [%]
(growing on seafloor)
11 
S. latissima
(growing on seafloor)
12 
S. latissima cov [%]
(growing on seafloor)
13 
L. hyperborea
(growing on seafloor)
14 
L. hyperborea cov [%]
(growing on seafloor)
15 
Phymatolithon sp.
(growing on seafloor)
16 
Phymatolithon sp. cov [%]
(growing on seafloor)
17 
H. rubra
(growing on seafloor)
18 
H. rubra cov [%]
(growing on seafloor)
19 
C. rupestris
(growing on seafloor)
20 
C. rupestris cov [%]
(growing on seafloor)
21 
P. pseudoceranoides
(growing on seafloor)
22 
P. pseudoceranoides cov [%]
(growing on seafloor)
23 
E. traillii
(growing on seafloor)
24 
E. traillii cov [%]
(growing on seafloor)
25 
C. crispus
(growing on seafloor)
26 
C. crispus cov [%]
(growing on seafloor)
27 
C. officinalis
(growing on seafloor)
28 
C. officinalis cov [%]
(growing on seafloor)
29 
M. alata
(growing on seafloor)
30 
M. alata cov [%]
(growing on seafloor)
31 
R. confervoides
(growing on seafloor)
32 
R. confervoides cov [%]
(growing on seafloor)
33 
A. plicata
(growing on seafloor)
34 
A. plicata cov [%]
(growing on seafloor)
35 
D. sanguinea
(growing on seafloor)
36 
D. sanguinea cov [%]
(growing on seafloor)
37 
V. byssoides
(growing on seafloor)
38 
V. byssoides cov [%]
(growing on seafloor)
39 
Rock
(growing on seafloor)
40 
Rock cov [%]
(growing on seafloor)
41 
B. hamifera
(growing on seafloor)
42 
B. hamifera cov [%]
(growing on seafloor)
43 
P. cartilagineum
(growing on seafloor)
44 
P. cartilagineum cov [%]
(growing on seafloor)
45 
C. melagonium
(growing on seafloor)
46 
C. melagonium cov [%]
(growing on seafloor)
47 
C. purpureum
(growing on seafloor)
48 
C. purpureum cov [%]
(growing on seafloor)
49 
P: stricta
(growing on seafloor)
50 
P. stricta cov [%]
(growing on seafloor)
51 
Ulva sp.
(growing on seafloor)
52 
Ulva sp. cov [%]
(growing on seafloor)
53 
S. muticum
(growing on seafloor)
54 
S. muticum cov [%]
(growing on seafloor)
55 
L. clavellosa
(growing on seafloor)
56 
L. clavellosa cov [%]
(growing on seafloor)
57 
L. orcadensis
(growing on seafloor)
58 
L. orcadensis cov [%]
(growing on seafloor)
59 
P. crispum
(growing on seafloor)
60 
P. crispum cov [%]
(growing on seafloor)
61 
D. viridis
(growing on seafloor)
62 
D. viridis cov [%]
(growing on seafloor)
63 
D. aculeata
(growing on seafloor)
64 
D. aculeata cov [%]
(growing on seafloor)
65 
H. ligulatum
(growing on seafloor)
66 
H. ligulatum cov [%]
(growing on seafloor)
67 
C. virgatum
(growing on seafloor)
68 
C. virgatum cov [%]
(growing on seafloor)
69 
P. rotundus
(growing on seafloor)
70 
P. rotundus cov [%]
(growing on seafloor)
71 
R. purpureum
(growing on seafloor)
72 
R. purpureum cov [%]
(growing on seafloor)
73 
E. pilosa cov [%]
(growing on Laminaria hyperborea)
74 
D. sanguinea cov [%]
(growing on Laminaria hyperborea)
75 
Laminaria sp. cov [%]
(growing on Laminaria hyperborea)
76 
U. lactuca cov [%]
(growing on Laminaria hyperborea)
77 
P. stricta cov [%]
(growing on Laminaria hyperborea)
78 
M. alata cov [%]
(growing on Laminaria hyperborea)
79 
Hydroidpolypen cov [%]
(growing on Laminaria hyperborea)
80 
P. crispum cov [%]
(growing on Laminaria hyperborea)
81 
P. coccinea cov [%]
(growing on Laminaria hyperborea)
82 
M. membranaceae cov [%]
(growing on Laminaria hyperborea)
83 
P. lenormandii cov [%]
(growing on Laminaria hyperborea)
84 
P. cartilagineum cov [%]
(growing on Laminaria hyperborea)
2005-08-19T12:43:007.86800054.1896-0.45BSSbedrock1.0100.00.25170.00.00.001.091.00.12531.0530.0000.00.56.00.00.00.00.00.31255.00.00.00.000.00.00.18750.50.00.00.00.00.00.00.000.00.00.258.00.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.0000000.0000.0000
2005-08-19T12:31:007.86798354.1896-0.27BSSbedrock1.0100.00.25190.06253.00.001.078.00.12511.0520.0000.00.3751.00.00.00.00.00.00.00.00.00.000.00.00.7512.00.00.00.00.00.00.00.000.00.00.00.00.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.1250.5000000.0000.0000
2005-08-19T12:09:007.86793354.1897-0.09BSSbedrock, stones0.37578.00.3125220.06254.00.001.089.00.12511.0610.0000.00.56253.00.00.00.00.00.00.00.00.00.000.00.00.187511.00.00.00.00.00.00.00.000.00.00.06250.50.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.0000000.0000.0000
2005-08-19T11:24:007.86778354.18980.22BSSbedrock0.2522.00.1875170.06252.00.001.088.00.75101.0440.0000.00.8755.00.18750.50.00.00.1251.00.00.00.000.00.00.06252.00.00.00.437510.00.00.00.2530.00.00.68759.00.12540.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.0000000.0000.0000
2005-06-24T11:23:007.86446754.19220.37BSSbedrock0.06250.50.6251000.00.00.001.095.00.312550.312550.25100.00.18751.00.1250.50.06250.50.1250.50.06250.50.000.00.00.1252.00.00.00.00.00.00.00.000.00.00.00.00.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.0000000.0000.0000
2005-08-19T11:07:007.86741754.19010.47BSSbedrock0.1251.00.4375780.12515.00.001.038.00.312550.9375370.1875200.00.755.00.00.00.06250.50.18751.00.00.00.000.00.00.87521.00.00.00.00.00.00.00.000.00.00.1250.50.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.0000000.0000.0000
2005-07-05T10:02:007.86661754.19070.49BSSbedrock0.06252.00.51000.00.00.001.079.00.001.0390.0000.00.43752.00.18751.00.00.00.00.00.00.00.000.00.00.00.00.00.00.00.00.000.00.00.00.00.12550.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.0000000.0000.0000
2005-08-18T09:00:007.86618354.19080.52BSSbedrock0.06253.00.31251000.00.00.12551.093.00.001.0320.1875200.00.252.00.6255.00.00.00.251.00.00.00.000.00.00.257.00.00.00.18752.00.00.00.000.00.00.252.00.12530.000.00.00.00.00.00.00.06250.50.00.00.00.00.000.00.0000000.0000.0000
2005-08-18T09:21:007.86596754.19110.64BSSbedrock0.06250.50.5625850.00.00.1875151.096.00.312520.9375400.31251000.00.1251.00.43753.00.18751.00.1250.50.00.00.000.00.00.1253.00.00.00.18751.00.00.00.000.00.00.1250.50.000.000.00.00.00.00.00.00.06250.50.00.00.00.00.000.00.0000000.0000.0000
2005-08-19T10:45:007.86726754.19020.72BSSbedrock0.00.00.12580.12512.00.062531.083.00.2560.625240.8753800.00.251.00.1250.50.00.00.1253.00.00.00.000.00.00.18754.00.00.00.2513.00.00.00.000.00.00.55.00.000.000.00.00.00.00.00.00.06256.00.00.00.00.00.000.00.0000000.0000.0000
2005-08-19T10:12:007.86695054.19041.07BSS, MKbedrock, stones0.06251.00.125150.062512.00.1875211.063.00.625150.562580.6252200.00.18750.50.7513.00.00.00.06250.50.18750.50.000.00.00.87520.00.00.00.687510.00.00.00.000.00.00.43753.00.12540.000.00.00.00.00.00.00.00.00.00.00.00.00.562550.00.0000000.0000.0000
2005-08-18T09:45:007.86570054.19121.09BSS, MKbedrock, stones, gravel0.00.00.1875250.00.00.375781.081.00.187570.3125130.3125800.00.00.00.31251.00.00.00.00.00.06250.50.000.00.00.2512.00.00.00.1250.50.00.00.000.00.00.00.00.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.04300100.0000.0010
2005-08-16T09:53:007.86365054.19271.85MK, BSSbedrock, stones0.00.00.000.252.00.5841.08.00.437550.000.0000.00.18750.50.0588235294117647050.50.00.00.00.00.812510.00.000.00.00.00.00.00.00.257.00.00.00.000.00.00.87515.00.000.000.00.00.00.00.00.00.37512.00.00.00.00.00.2510.00.0000000.0000.0000
2005-08-16T10:17:007.86378354.19262.00MK, BSSstones, bedrock0.00.00.0625100.00.00.25661.020.00.687570.000.1875200.00.31253.00.06250.50.00.00.00.00.93752.00.062520.00.01.043.00.00.00.56258.00.06250.50.000.00.00.37521.00.000.000.00.00.00.00.00.00.00.00.00.00.1250.50.000.00.022050047.0000.038130
2005-07-01T09:53:007.86178354.19422.84BSS, MKbedrock0.00.00.000.00.00.8751001.080.00.187570.001.02215/1538.00.00.00.253.00.06250.50.00.00.00.00.6875130.00.00.00.00.6256.00.06250.50.187510.251.00.18750.50.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.0000000.0000.0000
2005-07-18T14:06:007.85845054.19653.31BSS, MKbedrock0.00.00.000.00.00.93751000.812512.00.000.000.81251000.00.00.00.00.00.00.00.00.00.00.00.6875370.00.00.00.00.87562.00.1250.50.000.00.00.1250.50.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.028000415.0700.0000
2005-07-04T10:07:007.85808354.19663.83BSS, MKbedrock0.00.00.000.00.01.0721.084.00.000.000.0000.00.81256.00.00.00.7522.00.00.00.00.01.0550.18751.00.1252.00.00.00.87537.00.06250.50.000.31252.00.00.00.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.024721050.07400.0000
2005-07-27T13:50:007.85961754.19565.28BSS, MKbedrock, stones, gravel0.00.00.000.00.00.875931.033.00.000.000.56252100.00.00.00.00.00.00.00.00.00.00.00.875100.1250.50.562514.00.00.00.52.00.00.00.312570.00.00.06250.50.000.000.1250.50.00.00.06250.50.18750.50.00.00.00.00.000.00.0288501945.03500.550412
2005-07-06T10:23:007.85700054.19768.76BSS, MKbedrock0.00.00.000.00.00.3125281.071.00.000.000.000.06250.50.00.00.00.00.00.00.00.00.00.00.8125181.067.00.18755.00.31253.00.00.00.00.00.000.252.00.00.00.000.875160.6252.00.1250.50.00.00.00.00.00.00.00.00.000.00.0500000.5000.0000
2005-07-07T09:43:007.85681754.19789.25BSS, MK, Chalkbedrock, gravel0.00.00.000.06250.50.3125240.7518.00.000.000.3125200.00.06250.50.00.00.00.00.00.00.00.00.437541.031.00.687511.00.1251.00.6254.00.00.00.001.028.00.1250.50.000.9375100.1250.50.00.00.06250.50.06250.50.00.00.00.00.000.00.04851082.00100.51300
2005-07-27T10:40:007.85645054.19819.55BSS, MKbedrock, gravel0.00.00.000.00.00.312540.000.000.0000.00.06250.50.00.00.00.00.00.00.00.00.5625150.937538.00.251.01.043.00.31251.00.06250.50.187570.62510.00.1250.50.000.562520.6253.00.250.50.00.00.00.00.250.50.00.00.000.00.0000000.0000.0000
2005-06-29T13:30:007.85735054.197510.15BSS, MKbedrock0.00.00.000.00.00.25100.687545.00.000.000.0015/163.00.00.00.00.00.00.00.87540.00.00.00.625300.87525.00.2511.00.06250.50.00.00.00.00.000.00.00.00.00.000.000.00.00.00.00.00.00.00.00.00.00.00.00.000.00.02300000.0000.0000
2005-07-27T11:03:007.85636754.198211.45BSS, MKstones0.00.00.000.00.01.021.028.00.570.000.000.250.50.00.00.00.00.00.00.00.00.00.00.6875100.31252.01.015.00.3755.00.06250.50.00.00.2530.06250.50.00.00.000.437530.81254.00.00.00.00.00.1250.50.18750.51.00.50.000.00.0000000.0000.0000
2005-07-27T11:21:007.85593354.198512.50BSSbedrock0.00.00.000.00.00.687511.047.00.37580.000.000.1250.50.00.00.00.00.00.00.00.00.00.00.187510.31255.00.43753.00.00.00.00.00.000.3755.00.00.00.000.2510.18751.00.00.00.00.00.00.00.8751.00.00.00.000.00.0000000.0000.0000