Logo des Repositoriums
Zur Startseite
  • English
  • Deutsch
Anmelden
  1. Startseite
  2. SuUB
  3. Dissertationen
  4. Characteristics of calcareous dinoflagellate cyst assemblages in a major upwelling region (NW Africa) Spatial distribution, fluxes and ecology
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-diss000117157

Characteristics of calcareous dinoflagellate cyst assemblages in a major upwelling region (NW Africa) Spatial distribution, fluxes and ecology

Veröffentlichungsdatum
2009-11-18
Autoren
Richter, Dorit  
Betreuer
Willems, Helmut  
Gutachter
Henrich, Rüdiger  
Zusammenfassung
In this comparative study, surface sediment and sediment trap samples off the NW African coast were investigated to understand the ecology, spatial distribution and fluxes of calcareous dinoflagellate cysts (dinocysts). From surface sediment samples off the Moroccan coast, relative and absolute abundances of calcareous dinocysts have been calculated, and by means of well-constrained sedimentation rates dinocyst accumulation rates were determined. Relationships with environmental properties of the (sub)surface waters have been verified, reflecting the onshore-offshore variance of the environmental parameters. By investigating time-series sediment trap material from two different water depths, cyst fluxes as well as dinocysts sinking velocities through the water column were calculated, and mechanisms of transport were revealed. Seasonal and interannual variations of dinocyst fluxes were elucidated, implying relationships with passing and waning of upwelling filaments, i.e. variations in surface water turbulence and nutrient supply.
Schlagwörter
calcareous dinoflagellate cysts

; 

surface sediments

; 

sediment traps

; 

ecology

; 

NW Africa
Institution
Universität Bremen  
Fachbereich
Fachbereich 05: Geowissenschaften (FB 05)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00011715.pdf

Size

14.66 MB

Format

Adobe PDF

Checksum

(MD5):362987e921694c51d66cc2e0c2ea227b

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Datenschutzbestimmungen
  • Endnutzervereinbarung
  • Feedback schicken