Lead and cadmium in the Weser Estuary and the German Bight: Correlations between bacteria populations, heavy metals and organic carbon
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PANGAEA
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1981
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| _version_ | 1867167664050274304 |
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| author | Tan, Tjhing Lok Thormann, Detlef |
| author_facet | Tan, Tjhing Lok Thormann, Detlef |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Organic carbon, lead and cadmium contents of 20 sediments were determined and compared with the colony counts of anaerobic heterotrophic, anaerobic nitrogen fixing, chitinoclastic and cellulolytic bacteria. Organic carbon content, which is dependent on the sediment type, was positively correlated with lead and cadmium as well as with colony counts of all 4 physiological groups of bacteria. Even the sediments with the highest concentrations of 251.7 ppm Pb and 3.1 ppm Cd showed no reduction in their colony counts. From 2 different sediment sampIes with lead contents of 140 ppm and 21 ppm lead tolerance of the aerobic heterotrophic bacteria was investigated. However, no significant difference in lead tolerance of the 2 heterotrophic populations was found. Water from 6 stations was analysed for dissolved and particulate organic carbon, lead and cadmium. Dissolved lead concentrations were in the range of 0.2-0.5 µg/l and the particulate lead contents were between 0.05 and 4.3 µg/l. The concentrations of total lead for the stations off-shore were only one order of magnitude from the concentrations of the near-shore stations. The same phenomenon was observed for dissolved cadmium (0.02 - 0.25 µg/l) and particulate cadmium (0.003 - 0.15 µg/I) concentrations. Correlations between dissolved (1.6 - 10.8 mg/I) and particulate organic carbon (0.25 - 1.53 mg/I) with dissolved and particulate lead or cadmium were not found. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_743919 |
| institution | PANGAEA |
| language | en |
| publishDate | 1981 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Lead and cadmium in the Weser Estuary and the German Bight: Correlations between bacteria populations, heavy metals and organic carbon Tan, Tjhing Lok Thormann, Detlef Buoy 13 east; Buoy 13 west; Buoy 21; Buoy 22; Buoy 29; Buoy 30; Buoy 38; Buoy 49; Buoy 57; Buoy 61; Buoy A/12 east 1sm; Buoy A/12 east 2sm; Buoy Helgoland; Nordergründe; North Sea German Bight; UW-km 60; van Veen Grab; VGRAB; VH_01_76_1; VH_01_76_10; VH_01_76_2; VH_01_76_3; VH_01_76_4; VH_01_76_5; VH_01_76_6-1; VH_01_76_8; VH_01_76_9; VH_07_75_11-1; VH_07_75_11-2; VH_07_75_12-1; VH_07_75_12-2; VH_07_75_13; VH_07_75_14; VH_07_75_15; VH_07_75_16-1; VH_07_75_16-2; VH_07_75_17; VH_07_75_18; VH_07_75_19; VH_07_75_20; VH_07_75_21; VH_07_75_22-1; VH_07_75_22-2; VH_07_75_23-1; VH_07_75_23-2; VH_07_75_24; VH_07_75_6-2; VH0176; VH0775; Victor Hensen; Water sample; WS Organic carbon, lead and cadmium contents of 20 sediments were determined and compared with the colony counts of anaerobic heterotrophic, anaerobic nitrogen fixing, chitinoclastic and cellulolytic bacteria. Organic carbon content, which is dependent on the sediment type, was positively correlated with lead and cadmium as well as with colony counts of all 4 physiological groups of bacteria. Even the sediments with the highest concentrations of 251.7 ppm Pb and 3.1 ppm Cd showed no reduction in their colony counts. From 2 different sediment sampIes with lead contents of 140 ppm and 21 ppm lead tolerance of the aerobic heterotrophic bacteria was investigated. However, no significant difference in lead tolerance of the 2 heterotrophic populations was found. Water from 6 stations was analysed for dissolved and particulate organic carbon, lead and cadmium. Dissolved lead concentrations were in the range of 0.2-0.5 µg/l and the particulate lead contents were between 0.05 and 4.3 µg/l. The concentrations of total lead for the stations off-shore were only one order of magnitude from the concentrations of the near-shore stations. The same phenomenon was observed for dissolved cadmium (0.02 - 0.25 µg/l) and particulate cadmium (0.003 - 0.15 µg/I) concentrations. Correlations between dissolved (1.6 - 10.8 mg/I) and particulate organic carbon (0.25 - 1.53 mg/I) with dissolved and particulate lead or cadmium were not found. |
| title | Lead and cadmium in the Weser Estuary and the German Bight: Correlations between bacteria populations, heavy metals and organic carbon |
| topic | Buoy 13 east; Buoy 13 west; Buoy 21; Buoy 22; Buoy 29; Buoy 30; Buoy 38; Buoy 49; Buoy 57; Buoy 61; Buoy A/12 east 1sm; Buoy A/12 east 2sm; Buoy Helgoland; Nordergründe; North Sea German Bight; UW-km 60; van Veen Grab; VGRAB; VH_01_76_1; VH_01_76_10; VH_01_76_2; VH_01_76_3; VH_01_76_4; VH_01_76_5; VH_01_76_6-1; VH_01_76_8; VH_01_76_9; VH_07_75_11-1; VH_07_75_11-2; VH_07_75_12-1; VH_07_75_12-2; VH_07_75_13; VH_07_75_14; VH_07_75_15; VH_07_75_16-1; VH_07_75_16-2; VH_07_75_17; VH_07_75_18; VH_07_75_19; VH_07_75_20; VH_07_75_21; VH_07_75_22-1; VH_07_75_22-2; VH_07_75_23-1; VH_07_75_23-2; VH_07_75_24; VH_07_75_6-2; VH0176; VH0775; Victor Hensen; Water sample; WS |
| url | https://doi.org/10.1594/PANGAEA.743919 |