Dynamik kalkhaltigen Phytoplanktons (JGOFS)

Description: Die Kurz- und Langzeitvariabilitaet des haltigen Phytoplanktons in der photischen Zone von zwei oligotrophen ozeanischen Gebieten (Bermuda, N-Atlantik und Hawaii, N-Pazifik) soll im Rahmen des JGOFS- (Joint Global Ocean Flux Study, ein IGBP-Core Projekt) Programms untersucht werden. Die jahreszeitliche Variation soll verglichen werden mit der Exportproduktion und den Veraenderungen in der Wassersaeule und am Meeresboden mit Bezug auf die taxonomische Zusammensetzung des haltigen Phytoplanktons. Es werden monatliche Beprobungen des lebenden Planktons von 0-500 m Wassertiefe und von Sedimentfallen aus 500-3200 m Wassertiefe gemacht.

SupportProgram

Origins: /Bund/UBA/UFORDAT

Tags: Populationsdynamik ? Carbonat ? Hawaii ? Phytoplankton ? Meeresboden ? Marines Ökosystem ? Plankton ? Tiefsee ? Jahreszeit ? Taxonomie ? Trophiegrad ? Meeresgewässer ? Sedimentation ? Probenahme ? Atlantischer Ozean ? Pazifischer Ozean ? Bermuda ? Biologiques, processus ? Joint-Global-Ocean-Flux-Study ? Matieres, flux de ? Mer ? Plancton ? Sedimentfalle ? Vegetation, dynamique de la ?

License: cc-by-nc-nd/4.0

Language: Deutsch

Organisations

• Eidgenössische Technische Hochschule Zürich, Geologisches Institut (Betreiber*in)
• Umweltbundesamt (Bereitsteller*in)

Time ranges: 1993-01-01 - 1995-12-31

Alternatives

• Language: Englisch/English
  Title: Calcareous Phytoplankton Dynamics (JGOFS)
  Description: Leading Questions: 1. To what extent do fossil assemblages preserve the ecological/successional dynamics of living assemblages? 2. Is the morphological variability observed in certain phytoplankton taxa dominantly genetic or ecophenotypic? 3. When and where can certain phytoplankton taxa be obtained for future culture experiments? Abstract: We propose to study population dynamics in the photic zone, carbonate export production, transport through the water column, and Sedimentation on the ocean floor of a major group of cosmopolitan, unicellular, marine phytoplankton in the framework of a multidisciplinary and international program. The goal of the project is to link insights from ongoing investigations of the chemical, physical and biological processes in oceanic surface waters by the Joint Global Ocean Flux Study (JGOFS) to the geological record of the calcareous phytoplankton preserved in deep-sea sediments. Our studies will be carried out at two established multi-year time series sampling programs of JGOFS, which operate from Bermuda (BATS = Bermuda Atlantic Time Series Station) and Hawaii (HOT = Hawaii Ocean Time series station). At both stations we shall determine the taxonomic composition of the calcareous phytoplankton in: (1) filtered water samples taken monthly from 11 depth levels through the photic zone, (2) sediment trap material taken monthly at 500, 1500, and 3200 m water depth, and (3) the bioturbated surface sediment layer at least at one station (Bermuda). This will enable us to characterise qualitatively and quantitatively the seasonal variability of standing stock (Jan. 1991- Jan. 1994) of a major portion of the particulate carbonate produced in the oceans and their alteration during transport through the deep water column in the Atlantic and the Pacific oceans. https://ufordat.uba.de/UFORDAT/pages/PublicRedirect.aspx?TYP=PR&DSNR=41859

Status

Aktiv

Quality score

• Overall: 0.41
• Findability: 0.31

  • Title: 0.00
  • Description: 0.22
  • Identifier: false
  • Keywords: 0.67
  • Spatial: NoRegion (0.00)
  • Temporal: true
• Accessibility: 0.67

  • Landing page: Specific (1.00)
  • Direct access: false
  • Publicly accessible: true
• Interoperability: 0.00

  • Open file format: false
  • Media type: false
  • Machine-readable metadata: false
  • Machine-readable data: false
• Reusability: 0.67

  • License: ClearlySpecifiedAndFree (1.00)
  • Contact info: false
  • Publisher info: true

Accessed 1 times.