GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Alanine; Amino acid, total hydrolysable; Amino acids; Arginine; Aspartic acid; Aspartic acid/beta-Alanine ratio; beta-Alanine; BIOACID; Biological Impacts of Ocean Acidification; Carbon, inorganic, particulate; Carbon, organic, particulate; Carbon, total; Carbon/Nitrogen ratio; Dauwe index; Experimental treatment; gamma-Aminobutyric acid; Glutamic acid; Glutamic acid/gamma-Aminobutyric acid ratio; Glycine; Histidine; Isoleucine; Leucine; Lysine; Methionine; Nitrogen, total; Ornithine; Particle concentration; pH; Phenylalanine; Ratio; Serine; Sinking velocity; Size; Threonine; Time in hours; Tyrosine; Valine  (1)
  • community structure
Document type
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 375-376 (1998), S. 265-285 
    ISSN: 1573-5117
    Keywords: Macrobenthos ; community structure ; continental slope ; flow velocity ; C/N ; NE Atlantic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Macrofauna density, biomass and community structure together with several characteristics of the sediment and flow velocity were estimated in May 1994 and August 1995 at seven stations ranging from 208 m to 4470 m water depth along the OMEX-transect in the Goban Spur area (NE Atlantic). In 1994 four additional stations were sampled at a parallel transect about 40 km SSE of the OMEX-transect. In 1995 two additional transects were sampled, one in the Porcupine Seabight ∼ 100 km NNW and one along the slope at ∼ 3500 m water depth situated ∼ 200 km SSE of the OMEX-transect. An overall trend in decrease in density and biomass with increasing water depth was found, but no depth related pattern in mean individual weight could be observed. Mean individual weight, however, did show a negative relationship with flow velocities. Correspondence-analyses and single linkage clustering of the community structure showed three more or less depth related clusters, representing a shelf community, an upper-slope and a lower-slope community. These clusters coincided with differences in grain-size, % organic C and total N within the sediment and differences in flow velocities. However, some of the stations at similar depths were not clustered together. Grain-size did not differ at stations with similar depth, but the % of C and N and flow velocities could differ markedly. Stations at similar depth, but with different physical and/or chemical conditions showed differences in density, biomass, mean individual weight and in macrobenthic community structure. More filter-feeding taxa were observed at stations with higher flow velocities, whereas more subsurface deposit-feeders were found at stations with higher sedimentation rates. Thus, besides the effects of water depth on macrobenthic community structure, other physical and chemical factors (such as flow velocities and organic matter supply) can be important structuring factors as well.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2023-03-14
    Description: This work aimed to explore evaluated the effects of the increased of hydrostatic pressure on a defined bacterial community on aggregates formed from an axenic culture of marine diatoms by simulating sedimentation to the deep sea by increase of hydrostatic pressure up to 30 bar (equivalent to 3000 m water depth) against control at ambient surface pressure. Our hypothesis was that microbial colonization and community composition and thus microbial OM turnover is greatly affected by changes in hydrostatic pressure during sinking to the deep ocean.
    Keywords: Alanine; Amino acid, total hydrolysable; Amino acids; Arginine; Aspartic acid; Aspartic acid/beta-Alanine ratio; beta-Alanine; BIOACID; Biological Impacts of Ocean Acidification; Carbon, inorganic, particulate; Carbon, organic, particulate; Carbon, total; Carbon/Nitrogen ratio; Dauwe index; Experimental treatment; gamma-Aminobutyric acid; Glutamic acid; Glutamic acid/gamma-Aminobutyric acid ratio; Glycine; Histidine; Isoleucine; Leucine; Lysine; Methionine; Nitrogen, total; Ornithine; Particle concentration; pH; Phenylalanine; Ratio; Serine; Sinking velocity; Size; Threonine; Time in hours; Tyrosine; Valine
    Type: Dataset
    Format: text/tab-separated-values, 552 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...