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
Document type
Keywords
Language
  • 1
    Book
    Book
    Hoboken, NJ : John Wiley and Sons Inc.
    Type of Medium: Book
    ISBN: 9781394200078 , 1394200072
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Keywords: Benthic animals Research ; Methodology ; Benthos Research ; Methodology ; Marine sediments Research ; Methodology ; Marine biology Methodology ; Benthic animals Research ; Methodology ; Benthos Research ; Methodology ; Marine sediments Research ; Methodology ; Marine biology Methodology ; Tiefseesediment ; Benthos ; Biodiversität
    Type of Medium: Book
    Pages: XXI, 428 S. , Ill., graph. Darst.
    ISBN: 9781439811375
    DDC: 551.46
    RVK:
    Language: English
    Note: "A CRC title.". - Includes bibliographical references and index
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Online Resource
    Online Resource
    Milton :Taylor & Francis Group,
    Keywords: Benthic animals -- Research -- Methodology. ; Electronic books.
    Description / Table of Contents: A comprehensive update on methodologies for the study of deep-sea sediments, this handbook includes information on all living components of the benthos. It covers benthic viruses and prokaryotes (both Bacteria and Archaea), protozoa, foraminifera, meiofauna, macrofauna, and megafauna. After organismal components are discussed in terms of abundance, biomass, and biodiversity, they are integrated according to environmental variables. Each chapter includes sampling procedures, step-by-step laboratory protocols, instrument settings, calculation formulas, and conversion coefficients. Pictures, schemes, and diagrams provide visual support for working scientists.
    Type of Medium: Online Resource
    Pages: 1 online resource (460 pages)
    Edition: 1st ed.
    ISBN: 9781439811382
    DDC: 551.46
    Language: English
    Note: Front cover -- Contents -- Foreword -- Premise -- Preface -- Contributors -- Introduction -- Section I: Deep-Sea Environmental Variables -- Chapter 1. Total Organic Matter and Water Contents, Grain Size, Bulk Density, Porosity, and Redox Potential of Sediments -- Chapter 2. Total Organic Carbon, Total Nitrogen, and Organic Phosphorus in Marine Sediments -- Chapter 3. Bioavailable Organic Matter: Total and Enzymatically Hydrolyzable Proteins, Carbohydrates, and Lipids -- Chapter 4. Photosynthetic Pigment Concentrations in Marine Sediments -- Section II: Food Supply of Organic Matter to the Deep-Sea Floor -- Chapter 5. Fluxes of Labile Organic Matter to the Sea Floor -- Chapter 6. Total Carbohydrate Flux from Sediment Trap Samples -- Chapter 7. Total Protein Flux from Sediment Trap Samples -- Chapter 8. Total Lipid Flux from Sediment Trap Samples -- Chapter 9. Total DNA from Sediment Trap Samples -- Chapter 10. Phytopigment Flux from Sediment Trap Samples -- Section III: Deep-Sea Benthic Life -- Chapter 11. Viral Abundance -- Chapter 12. Prokaryotic Abundance -- Chapter 13. Fluorescence In Situ Hybridization and Catalyzed Reporter Deposition for Benthic Prokaryote Assemblage Structure -- Chapter 14. Prokaryotic Abundance by Real-Time PCR -- Chapter 15. Abundance of Heterotrophic Benthic Protists -- Chapter 16. Abundance of Benthic Foraminifera -- Chapter 17. Abundance of Metazoan Meiofauna -- Chapter 18. Macrofaunal Abundance -- Chapter 19. Megafaunal Abundance -- Section IV: Deep-Sea Benthic Diversity -- Chapter 20. Extraction and Purification of DNA from Marine Sediments Suitable for the Analysis of Prokaryotic Diversity -- Chapter 21. Archaeal Diversity Analysis Using 16S rDNA T-RFLP (Terminal- Restriction Fragment Length Polymorphisms) -- Chapter 22. Benthic Bacterial Diversity Based on Cloning and Sequencing of 16S rRNA Genes. , Chapter 23. Benthic Bacterial Diversity Analysis Based on ARISA (Automated Ribosomal Intergenic Spacer Analysis) -- Chapter 24. Meiofaunal Diversity -- Chapter 25. Macrofaunal and Megafaunal Diversity -- Chapter 26. Parameters for the Measurement of Marine Benthic Structural and Functional Diversity -- Section V: Deep-Sea Benthic Functioning -- Chapter 27. Deep-Sea Experiments and Manipulations -- Chapter 28. Effect of Pressure on Enzymatic Activities, Viral Production, and Prokaryotic Heterotrophic Production -- Chapter 29. Organic Carbon Remineralization Rates in Marine Surface Sediments -- Chapter 30. Degradation and Turnover of Organic Matter in Marine Sediments -- Chapter 31. Extracellular DNA Extraction from Marine Sediments -- Chapter 32. Degradation of Extracellular DNA in Marine Sediments -- Chapter 33. Viral Production in Marine Sediments -- Chapter 34. Determination of Living/Dead and Active/Dormant Bacterial Fractions in Marine Sediments -- Chapter 35. Prokaryotic Biomass in Marine Sediments -- Chapter 36. Benthic Prokaryotic Heterotrophic Production Using the Leucine Incorporation Method -- Chapter 37. Prokaryotic Chemoautotrophic Production in Marine Sediments -- Chapter 38. Meiofaunal Biomass and Secondary Production -- Chapter 39. Macrofaunal and Megafaunal Biomass and Biochemical Composition -- Chapter 40. Protistan Grazing on Benthic Prokaryotes and Viruses -- Chapter 41. Meiobenthic Predation on Prokaryotes -- Chapter 42. Analysis of Benthic Food Webs and Benthic Trophodynamics -- Section VI: Suggested Readings for the Study of Deep-Sea Biodiversity and Ecosystem Functioning -- Suggested Readings -- Index -- Back cover.
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 50 (2004), S. 0 
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Estuarine waters are known to enhance productivity in coastal environments, but little is known about the impact that nutrient-rich waters can have on benthic microbial processes. After intensive surface sediment sampling in a wide coastal area impacted by river plume waters, we performed on-site microcosm experiments in which we added estuarine waters, rich in both organic and inorganic N and P, to pristine offshore sediments. This experimental approach has been conducted in different coastal areas for two consecutive years, in which the river-plume waters differed in both inorganic and organic N and P content. Benthic bacterial response (total bacterial abundance and biomass, aminopeptidase, β-d-glucosidase and bacterial C production) was investigated in treated and non-treated sediments. All structural and functional microbial variables increased significantly after plume-water supply (within 12–24 h bacterial abundance in the sediment doubled and enzymatic activities increased up to 〉50%). Results indicate that inorganic N supply from plume waters was sufficient to induce a significant response in benthic bacterial abundance, independently from the presence of high and/or variable N:P ratios. However, bacterial carbon production and exo-enzymatic activities increased significantly when the supply of organic P from plume waters was associated with a decrease of organic N:P ratios. We conclude that plume waters have important effects on benthic bacterial dynamics, but the extent of their biogeochemical implications is largely dependent upon their organic P availability and on stoichiometric ratios of organic nutrients supplied by plume waters.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Polar biology 13 (1993), S. 525-533 
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The biochemical composition and spatial distribution of particulate organic matter (POM) were studied in the Ross Sea (Antarctica) in summer 1989 to assess the quantitative role of organic carbon fractions in the cycling of organic matter in the water column. Large differences in chemical composition were observed between surface and deep layers. The results indicated that, despite large geographical differences, POM was quite homogeneous, of phytoplankton origin and mostly detrital. Different ratios were used to investigate the changes in biochemical composition of particulate organic matter in relation to the ice-melting: C∶N (organic carbon∶organic nitrogen ratio) and C-POM∶POC (sum of carbohydrate, protein and lipid carbon∶total organic carbon ratio) were used to analyse the percentage of refractory organic material. PPRT∶PCHO (protein∶carbohydrate ratio) were used to establish POM “age” and RNA∶DNA ratios as a relative measure of particulate activity; POC∶Chl a and N-PPRT∶Chl a ratios were used to estimate the autotrophic contribution to the suspended particulate organic matter. Despite its low caloric value (5.3 Kcal g POM−1), an high caloric content in the photic layer (1.6 Kcal m−3 of POM and 2.5 Kcal m−3 of POC) was found thus indicating that a large amount of food was available to higher trophic levels.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Meiofauna abundance, biomass and community structure were investigated in two comparable deep sites of the Ross Sea (Antarctica) characterized by different trophic and sediment characteristics. Site B (567 m depth, dominated by muddy sediments) and site C (439 m depth, characterized by the presence of calcareous debris and coarse sand) were located at increasing distance from the polynyas and were subject to different inputs of organic material to the seabed. Total meiofauna abundance ranged from 192.0 to 1191.2 ind. 10 cm−2, and total biomass varied between 9.5 and 50.3 μgC 10 cm−2. Meiofauna densities from the Ross Sea are, on average, 2–7 times lower than those reported from other similar deep polar regions and displayed significant differences between the sites. Nematodes dominated the samples at both sites, but their relative significance changed between the sites (80% at site B and 56% at site C), followed by copepods (1.6% and 35% at sites B and C, respectively). Meiofauna composition at site B appeared similar to that reported for deep-sea antarctic or temperate sediments, whereas the composition at site C was similar to that of coastal areas. On a macroscale, the different inputs of utilizable organic material at the two sites were reflected in meiofaunal distribution patterns, indicating that meiofaunal communities from the Ross Sea are dependent on particulate organic matter fluxes from the photic layer and are coupled to pelagic phenomena. Very low microscale variations (i.e. between replicates) in meiofauna density contrasted with large mesoscale variability, which was related to the concentration of the main food indicators (phytopigments, proteins, carbohydrates and lipids).
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1573-5117
    Keywords: benthic bacteria ; organic matter composition ; photosynthetic pigments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The relationships between the biochemical composition of sediment organic matter and bacteria and microphytobenthic biomass distribution, were investigated along the coast of Northern Tuscany (Tyrrhenian Sea). Organic matter appeared to be of highly refractory composition. Among the three main biochemical classes, proteins were the major component (0.96 mg g-1 sediment d.w.) followed by total carbohydrates (0.81 mg g-1 sediment d.w.) and lipids (8.1 µg g-1 sediment d.w.). Bacterial number in surface sediments (0–2 cm) ranged from 1.7 to 24.5 × 108 cells g-1 of sediment dry weight showing a strong decrease with sediment depth. In surface sediments, significant correlations were found between bacterial biomass and protein concentration. Bacterial activity (measured by the frequency of dividing cells) was significantly related to lipid concentration. Bacterial and microphytobenthic biomass accounted for 3.1 and 18.1% respectively of the sediment organic carbon. In surface sediments bacterial lipids accounted, on average, for 27 % of total lipids, whereas bacterial proteins and carbohydrates accounted for 2.5 and 0.5% of total proteins and carbohydrates, respectively. The benthic degradation process indicated that lipids were a highly degradable compound (about 35% in the top 10 cm). Carbohydrate decreased for 25.6% in the top 10 cm, whereas proteins increased with depth, thus indicating that this compound may resist to diagenetic decomposition. These data suggest that specific organic compounds need to be measured rather than bulk carbon and nitrogen measurements in order to relate microbial biomass to the quality of organic matter.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1573-5117
    Keywords: particulate organic matter composition ; bacteria ; sediment-waterinterface ; Posidonia oceanica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The seagrass Posidonia oceanica is the most productive system of theMediterranean Sea. In order to gather information on the temporal andspatial variability of the suspended particulate matter in relation tobacterial dynamics, water samples were collected at 10 cm above thesediments over a period of 13 months in the Prelo Bay (Ligurian Sea, NWMediterranean). Measurements of seston concentration, as well as theelemental (POC and PON) and biochemical composition (lipids, proteins,carbohydrates and nucleic acids) of particulate matter were carried out toassess the origin, composition and bacterial contribution to the foodpotentially available in the seagrass system to consumers. Lipids andproteins were the main biochemical classes of organic compounds, followed bycarbohydrates. Despite the highly refractory composition of the seagrassleaves, particulate organic matter was mostly composed of labile compounds(69.9% of POC). POM temporal patterns were controlled by currentspeed at the sediment–water interface that resuspended only smallparticles largely colonised by bacteria after an intensive process offractionation and aging. In the seagrass system, the POM appears to bedominated by bacteria (density ranging from 0.7 to 2.5×109 cells l™1, representing more than48.3% of POC and 68.7% of the biopolymeric carbon, as the sumof lipid, protein and carbohydrate carbon). This feature was characteristicof the seagrass system since much lower bacterial densities were foundoutside the Posidonia meadow. Bacteria were negatively correlated with theconcentration of nitrite and nitrate suggesting a selective utilisation ofinorganic nutrients to support their growth.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2019-09-23
    Description: Ocean Sampling Day was initiated by the EU-funded Micro B3 (Marine Microbial Biodiversity, Bioinformatics, Biotechnology) project to obtain a snapshot of the marine microbial biodiversity and function of the world’s oceans. It is a simultaneous global mega-sequencing campaign aiming to generate the largest standardized microbial data set in a single day. This will be achievable only through the coordinated efforts of an Ocean Sampling Day Consortium, supportive partnerships and networks between sites. This commentary outlines the establishment, function and aims of the Consortium and describes our vision for a sustainable study of marine microbial communities and their embedded functional traits.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
    Format: text
    Format: text
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2019-03-11
    Type: Report , NonPeerReviewed , info:eu-repo/semantics/book
    Format: text
    Format: text
    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...