|
|
|
|
|
| Meyerreil, L; Graf, G. |
| The seasonal development of benthic communities was followed in a coastal marine sediment of the Kiel Bight (Baltic Sea; FRG). Total benthic biomass, (ATP), bacterial biomass, overall benthic activity (heat production), and enzymatic decomposition rates of carbohydrate (d-amylase activity) followed a seasonal cycle strongly related to certain events in the sediment. Among these, the input of the phytoplankton blooms in autumn and spring, the accumulation of organic material during winter, and changes in the physical characteristics of the sediment turned out to be most important for the development of benthic biomass and activity. Processes within the benthic community occurred in very short time scales (within days). |
| Tipo: Text |
Palavras-chave: Bacteria; Organic matter; Sediments; Bioenergetics; Enzymatic activity; Biomass. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-944.pdf |
| |
|
|
| Thomsen, L; Graf, G. |
| Characteristics of suspended particulate matter in the benthic boundary layer of the continental margin of the western Barents Sea were studied during three cruises in July 1990, Winter and Summer 1991 by collecting water samples 10, 15, 25, 40 and 500 cm above the sea-floor. At all stations gradients of oxygen and particulate matter within the benthic boundary layer were evident. Oxygen varied between 266 and 376 mu mol l(-1) and did not correlate with height above the sea-floor. Total particulate matter concentrations ranged from 0.75 to 11.3 mg l(-1) Particulate organic carbon concentrations ranged from 16 to 107 mu g l(-1) and chlorophyll equivalent concentrations ranged from 0.0 to 0.18 mu g l(-1). Bacterial biomass measured at 5 stations varied... |
| Tipo: Text |
|
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00099/21014/18640.pdf |
| |
|
|
| Jensen, P; Rumohr, J; Graf, G. |
| Large amounts of clay and silt particles from the northem Voring Plateau (Norwegian Sea) accumulate on a ridge (Voring Plateau escarpment) situated at 1 245-1 310 m depth on the northem Voring Plateau. Calculated Holocene sedimentation rates are up to 18 cm ky-1, while amounting to less than 1 cm ky-1 on the slope south of the ridge. Six stations were sampled - three on each side of the ridge - to obtain quantitative information of different biological components and relate these observations to the environmental conditions. Pronounced biological differences between the southern and northem sites are evident in terms of oxygen consumption, meio- and macrofauna composition, meiofauna biomass and meiofauna depth distribution. A specific fauna consisting of... |
| Tipo: Text |
|
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00100/21162/18781.pdf |
| |
|
|
|
