Matches in SemOpenAlex for { <https://semopenalex.org/work/W1503911030> ?p ?o ?g. }
Showing items 1 to 68 of
68
with 100 items per page.
- W1503911030 abstract "Evidence gathered three decades ago showed persistently elevated total and new primary production over the continental shelf of the Southern California Bight. This dissertation examines the mechanisms that drive the flux of nitrate necessary to support the phytoplankton productivity over the shelf. Using results gathered from an intensive field experiment, I show that strong, persistent cross-shelf gradients in phytoplankton standing stock, primary productivity and community composition result from nitrate flux due to internal waves of tidal and higher frequency. I report the first estimates of the horizontal flux of nitrate due to the internal tide, and demonstrate that it is quantitatively similar to the nitrate demand of the inner shelf phytoplankton population. The local winds, contrary to expectations based on previous research, support a biologically relevant tilt of the nitracline. Variability in the magnitude of the cross-shore shoaling of the nitracline in turn impacts the magnitude of the internal tide mediated nitrate flux. Remotely-forced large scale variability in the offshore depth of the nitracline controls the continental shelf ‘nitrate climate.’ During episodes of anomalously warm ocean temperatures, a correspondingly deep nitracline can shut off nitrate supply to the continental shelf, resulting in low phytoplankton biomass. During more typical conditions, the phytoplankton community over the inner shelf is dominated by taxa capable of rapid nitrate assimilation, while offshore waters have a proportionally greater amount of oligotrophic species. The results of this dissertation indicate that relatively small changes in the offshore depth of the nitracline could account for the long-term increase primary productivity and phytoplankton biomass noted by recent studies, even in the absence of increased local wind-forced upwelling. Finally, I examine the baroclinic semidiurnal variability in currents and water column structure in the shallow water of the inner shelf. The results of this analysis demonstrate that the behavior of the semidiurnal variability is not consistent with a propagating or standing low mode internal wave. Analyses of linearized momentum balances suggest that the semidiurnal variability may result from the interaction of barotropic tidal flow, friction in the bottom boundary layer, and rotation." @default.
- W1503911030 created "2016-06-24" @default.
- W1503911030 creator A5027607614 @default.
- W1503911030 date "2009-01-01" @default.
- W1503911030 modified "2023-09-23" @default.
- W1503911030 title "Aspects of the Physical Control of Phytoplankton Dynamics over the Southern California Bight Continental Shelf" @default.
- W1503911030 hasPublicationYear "2009" @default.
- W1503911030 type Work @default.
- W1503911030 sameAs 1503911030 @default.
- W1503911030 citedByCount "2" @default.
- W1503911030 countsByYear W15039110302012 @default.
- W1503911030 crossrefType "journal-article" @default.
- W1503911030 hasAuthorship W1503911030A5027607614 @default.
- W1503911030 hasConcept C111368507 @default.
- W1503911030 hasConcept C127313418 @default.
- W1503911030 hasConcept C139719470 @default.
- W1503911030 hasConcept C142796444 @default.
- W1503911030 hasConcept C149348798 @default.
- W1503911030 hasConcept C162284963 @default.
- W1503911030 hasConcept C162324750 @default.
- W1503911030 hasConcept C184751465 @default.
- W1503911030 hasConcept C18903297 @default.
- W1503911030 hasConcept C204983608 @default.
- W1503911030 hasConcept C2776384668 @default.
- W1503911030 hasConcept C2780892065 @default.
- W1503911030 hasConcept C39432304 @default.
- W1503911030 hasConcept C86803240 @default.
- W1503911030 hasConceptScore W1503911030C111368507 @default.
- W1503911030 hasConceptScore W1503911030C127313418 @default.
- W1503911030 hasConceptScore W1503911030C139719470 @default.
- W1503911030 hasConceptScore W1503911030C142796444 @default.
- W1503911030 hasConceptScore W1503911030C149348798 @default.
- W1503911030 hasConceptScore W1503911030C162284963 @default.
- W1503911030 hasConceptScore W1503911030C162324750 @default.
- W1503911030 hasConceptScore W1503911030C184751465 @default.
- W1503911030 hasConceptScore W1503911030C18903297 @default.
- W1503911030 hasConceptScore W1503911030C204983608 @default.
- W1503911030 hasConceptScore W1503911030C2776384668 @default.
- W1503911030 hasConceptScore W1503911030C2780892065 @default.
- W1503911030 hasConceptScore W1503911030C39432304 @default.
- W1503911030 hasConceptScore W1503911030C86803240 @default.
- W1503911030 hasLocation W15039110301 @default.
- W1503911030 hasOpenAccess W1503911030 @default.
- W1503911030 hasPrimaryLocation W15039110301 @default.
- W1503911030 hasRelatedWork W149806966 @default.
- W1503911030 hasRelatedWork W1923173778 @default.
- W1503911030 hasRelatedWork W1979856807 @default.
- W1503911030 hasRelatedWork W1984700968 @default.
- W1503911030 hasRelatedWork W2000069320 @default.
- W1503911030 hasRelatedWork W2021861408 @default.
- W1503911030 hasRelatedWork W2021893758 @default.
- W1503911030 hasRelatedWork W2042968580 @default.
- W1503911030 hasRelatedWork W2043649317 @default.
- W1503911030 hasRelatedWork W2055719692 @default.
- W1503911030 hasRelatedWork W2080014142 @default.
- W1503911030 hasRelatedWork W2091655246 @default.
- W1503911030 hasRelatedWork W2097022348 @default.
- W1503911030 hasRelatedWork W2323113282 @default.
- W1503911030 hasRelatedWork W2474081382 @default.
- W1503911030 hasRelatedWork W2531587950 @default.
- W1503911030 hasRelatedWork W2765340687 @default.
- W1503911030 hasRelatedWork W2956954675 @default.
- W1503911030 hasRelatedWork W2491949344 @default.
- W1503911030 hasRelatedWork W3094410616 @default.
- W1503911030 isParatext "false" @default.
- W1503911030 isRetracted "false" @default.
- W1503911030 magId "1503911030" @default.
- W1503911030 workType "article" @default.