Keywords:
Hochschulschrift
Description / Table of Contents:
Benthic release of the key nutrients iron (Fe) and phosphorus (P) is enhanced from sediments that are impinged by oxygen-deficient bottom waters due to its diminished retention capacity for such redox sensitive elements. Suboxic to anoxic and sometimes even euxinic conditions are recently found in open ocean oxygen minimum zones (OMZs, e.g. Eastern Boundary Upwelling Systems) and marginal seas (e.g. the Black Sea and the Baltic Sea). Recent studies showed that OMZs expanded in the last decades and will further spread in the future. Due to the additional release of bioavailable key nutrients from the sediments in such high productivity regions, several feedback mechanisms can evolve. The scenarios range from positive to neutral and negative consequences on the evolution of the ocean’s oxygen levels. This controversial issue makes it crucial to investigate the biogeochemical cycling of Fe and P in OMZs
Type of Medium:
Online Resource
Pages:
1 Online-Ressource
URL:
http://nbn-resolving.de/urn:nbn:de:gbv:8-diss-212773
URL:
http://d-nb.info/1137509813/34
URL:
http://macau.uni-kiel.de/receive/dissertation_diss_00021277
URN:
urn:nbn:de:gbv:8-diss-212773
DDC:
550
Language:
English
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