Angelicque E. White
University of Hawaii
Environmental chemistryPlanktonEcosystemOceanographySubtropicsDiazotrophUpwellingDiel vertical migrationNitrogen fixationChemistryEcologyTrichodesmiumCyanobacteriaPhytoplanktonOcean gyreEnvironmental sciencePhosphorusAbundance (ecology)BiologyPhotic zone
Publications 108
#1Rachel A. Foster (UCSC: University of California, Santa Cruz)H-Index: 30
#2Daniela Tienken (MPG: Max Planck Society)H-Index: 3
Last. Angelicque E. White (UH: University of Hawaii)H-Index: 26
view all 6 authors...
N2 fixation constitutes an important new nitrogen source in the open sea. One group of filamentous N2 fixing cyanobacteria (Richelia intracellularis, hereafter Richelia) form symbiosis with a few genera of diatoms. High rates of N2 fixation and carbon (C) fixation have been measured in the presence of diatom-Richelia symbioses. However, it is unknown how partners coordinate C fixation and how the symbiont sustains high rates of N2 fixation. Here, both the N2 and C fixation in wild diatom-Richeli...
#1Benedetto BaroneH-Index: 10
#2Matthew J. ChurchH-Index: 42
Last. David M. KarlH-Index: 125
view all 10 authors...
We examined the biogeochemical impact of pairs of mesoscale cyclones and anticyclones in spatial proximity (<200 km apart) in the North Pacific Subtropical Gyre. While previous studies have demonst...
#1Fernanda Henderikx-Freitas (UH: University of Hawaii)
#2David M. Karl (UH: University of Hawaii)H-Index: 125
Last. Angelicque E. White (UH: University of Hawaii)H-Index: 26
view all 4 authors...
#1David M. KarlH-Index: 125
#2Ricardo M. LetelierH-Index: 51
Last. Angelicque E. WhiteH-Index: 26
view all 7 authors...
Abstract Station ALOHA (A Long-term Oligotrophic Habitat Assessment) was established in the North Pacific Subtropical Gyre (22°45’N, 158°W) as an oligotrophic ocean benchmark to improve our understanding of processes that govern the fluxes of carbon (C) into and from the surface ocean. At approximately monthly intervals, measurements of the primary production of particulate C (PC) using the 14C method, and the export of PC and particulate nitrogen (PN) using surface-tethered sediment traps deplo...
#1Stephen J. Beckett (Georgia Institute of Technology)H-Index: 11
#2David Demory (Georgia Institute of Technology)H-Index: 6
Last. Samuel T. WilsonH-Index: 19
view all 22 authors...
Marine ecosystem models often consider temporal dynamics on the order of months to years, and spatial dynamics over regional and global scales as a means to understand the ecology, evolution, and biogeochemical impacts of marine life. Large-scale dynamics are themselves driven over diel scales as a result of light-driven forcing, feedback, and interactions. Motivated by high-frequency measurements taken by Lagrangian sampling in the North Pacific Subtropical Gyre, we develop a hierarchical set o...
#1Rhea K. Foreman (UH: University of Hawaii)H-Index: 4
#2Karin M. Björkman (UH: University of Hawaii)H-Index: 22
Last. David M. Karl (UH: University of Hawaii)H-Index: 125
view all 9 authors...
#1Dugenne M (UCSC: University of California, Santa Cruz)
#2Mary R. Gradoville (UCSC: University of California, Santa Cruz)H-Index: 7
Last. A. M. Hynes (UW: University of Washington)H-Index: 8
view all 24 authors...
Recent studies suggest that mesoscale eddies may support elevated dinitrogen (N2) fixation rates (NFRs) and abundances of N2-fixing microorganisms (diazotrophs), yet the strength and mechanistic underpinnings of this trend are not fully understood. We explored the relationships among NFRs, cyanobacterial diazotroph abundances, and environmental conditions of mesoscale eddies by sampling three pairs of eddies of opposite polarity in the North Pacific Subtropical Gyre. Using the Hawaii Ocean Time-...
#1Harihar Rajaram (Johns Hopkins University)H-Index: 35
#2Suzana J. Camargo (Columbia University)H-Index: 59
Last. Andrew W. Yau (U of C: University of Calgary)H-Index: 34
view all 33 authors...
#1Angela K. Boysen (UW: University of Washington)H-Index: 6
#2Laura T. Carlson (UW: University of Washington)H-Index: 9
Last. Anitra E. Ingalls (UW: University of Washington)H-Index: 34
view all 11 authors...
ABSTRACT Light fuels photosynthesis and organic matter production by primary producers in the sunlit ocean. The quantity and quality of the organic matter produced influence community function, yet in situ measurements of metabolites, the products of cellular metabolism, over the diel cycle are lacking. We evaluated community-level biochemical consequences of oscillations of light in the North Pacific Subtropical Gyre by quantifying 79 metabolites in particulate organic matter from 15 m every 4 ...
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