Margaret Mulholland

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Margaret Mulholland
Alma materUniversity of Maryland, College Park
Scientific career
InstitutionsOld Dominion University
ThesisNitrogen utilization, metabolism and the regulation of N₂ fixation in Trichodesmium spp. (1998)

Margaret Ruth Mulholland is professor at Old Dominion University known for her work on nutrients in marine and estuarine environments.

Education and career[edit]

Mulholland has a B.S. from the University of Notre Dame (1984), and an M.S. in biological oceanography (1986) and an M.M. in marine affairs (1992) from the University of Washington.[1] In 1998 she earned her Ph.D. in biological oceanography from the University of Maryland.[2] As of 2022 she is a professor at Old Dominion University.[1]

Research[edit]

Mulholland's early research examined the oxidation of amino acids[3] and nitrogen cycling by the marine bacterium Trichodesmium.[4][5] Her subsequent work investigated nitrogen cycling in harmful algae including Aureococcus[6][7] and Karenia brevis.[8] She has examined how phytoplankton will respond to an ocean enriched in carbon dioxide,[9] the impact of climate change on the Chesapeake Bay,[10] and the contribution of nitrogen-fixing organisms to nutrient cycling.[11][12] Her research tracks organic compounds in seawater, for example cyanate[13] or compounds produced by phytoplankton.[14] In coastal environments she has researched the impact of coastal flooding and the movement of pollution during floods.[15][16] As of 2022 she has an h-index of 46 and has publications that have been cited more than 7000 times.[17]

Selected publications[edit]

  • Capone, Douglas G.; Bronk, Deborah A.; Mulholland, Margaret R.; Carpenter, Edward J. (2008-08-15). Nitrogen in the Marine Environment. Elsevier. ISBN 978-0-08-055892-9.
  • Mulholland, Margaret R.; Bernhardt, Peter W.; Heil, Cynthia A.; Bronk, Deborah A.; O'Neil, Judith M. (2006). "Nitrogen fixation and release of fixed nitrogen by Trichodesmium spp. in the Gulf of Mexico". Limnology and Oceanography. 51 (4): 1762–1776. Bibcode:2006LimOc..51.1762M. doi:10.4319/lo.2006.51.4.1762. ISSN 0024-3590. S2CID 15821273.
  • Mulholland, Margaret R.; Gobler, Christopher J.; Lee, Cindy (2002). "Peptide hydrolysis, amino acid oxidation, and nitrogen uptake in communities seasonally dominated by Aureococcus anophagefferens". Limnology and Oceanography. 47 (4): 1094–1108. Bibcode:2002LimOc..47.1094M. doi:10.4319/lo.2002.47.4.1094. ISSN 0024-3590. S2CID 86067819.
  • Mulholland, MR; Bronk, DA; Capone, DG (2004). "Dinitrogen fixation and release of ammonium and dissolved organic nitrogen by Trichodesmium IMS101". Aquatic Microbial Ecology. 37: 85–94. doi:10.3354/ame037085. ISSN 0948-3055.

References[edit]

  1. ^ a b "Margaret Mulholland". Old Dominion University. Retrieved 2022-03-18.
  2. ^ Mulholland, Margaret Ruth (1998). Nitrogen utilization, metabolism and the regulation of N-fixation in Trichodesmium spp (Thesis). OCLC 40949523.
  3. ^ Mulholland, MR; Glibert, PM; Berg, GM; Van Heukelem, L; Pantoja, S; Lee, C (1998). "Extracellular amino acid oxidation by microplankton: a cross-ecosystem comparison". Aquatic Microbial Ecology. 15: 141–152. doi:10.3354/ame015141. ISSN 0948-3055.
  4. ^ Mulholland, Margaret R.; Capone, Douglas G. (2000-04-01). "The nitrogen physiology of the marine N2-fixing cyanobacteria Trichodesmium spp". Trends in Plant Science. 5 (4): 148–153. doi:10.1016/S1360-1385(00)01576-4. ISSN 1360-1385. PMID 10740295.
  5. ^ Mulholland, Mr; Capone, Dg (1999). "Nitrogen fixation, uptake and metabolism in natural and cultured populations of Trichodesmium spp". Marine Ecology Progress Series. 188: 33–49. Bibcode:1999MEPS..188...33M. doi:10.3354/meps188033. ISSN 0171-8630.
  6. ^ Mulholland, Margaret R.; Gobler, Christopher J.; Lee, Cindy (2002). "Peptide hydrolysis, amino acid oxidation, and nitrogen uptake in communities seasonally dominated by Aureococcus anophagefferens". Limnology and Oceanography. 47 (4): 1094–1108. Bibcode:2002LimOc..47.1094M. doi:10.4319/lo.2002.47.4.1094. ISSN 0024-3590. S2CID 86067819.
  7. ^ Mulholland, Margaret R.; Boneillo, George; Minor, Elizabeth C. (2004-11-01). "A comparison of N and C uptake during brown tide (Aureococcus anophagefferens) blooms from two coastal bays on the east coast of the USA". Harmful Algae. Brown Tides. 3 (4): 361–376. doi:10.1016/j.hal.2004.06.007. ISSN 1568-9883.
  8. ^ Killberg-Thoreson, Lynn; Mulholland, Margaret R.; Heil, Cynthia A.; Sanderson, Marta P.; O’Neil, Judith M.; Bronk, Deborah A. (2014). "Nitrogen uptake kinetics in field populations and cultured strains of Karenia brevis". Harmful Algae. 38: 73–85. doi:10.1016/j.hal.2014.04.008.
  9. ^ HUTCHINS, DAVID A.; MULHOLLAND, MARGARET R.; FU, FEIXUE (2009). "Nutrient Cycles and Marine Microbes in a CO₂-Enriched Ocean". Oceanography. 22 (4): 128–145. doi:10.5670/oceanog.2009.103. ISSN 1042-8275. JSTOR 24861030.
  10. ^ Najjar, Raymond G.; Pyke, Christopher R.; Adams, Mary Beth; Breitburg, Denise; Hershner, Carl; Kemp, Michael; Howarth, Robert; Mulholland, Margaret R.; Paolisso, Michael; Secor, David; Sellner, Kevin (2010-01-01). "Potential climate-change impacts on the Chesapeake Bay". Estuarine, Coastal and Shelf Science. 86 (1): 1–20. Bibcode:2010ECSS...86....1N. doi:10.1016/j.ecss.2009.09.026. ISSN 0272-7714.
  11. ^ Mulholland, M. R.; Bernhardt, P. W.; Blanco-Garcia, J. L.; Mannino, A.; Hyde, K.; Mondragon, E.; Turk, K.; Moisander, P. H.; Zehr, J. P. (2012-06-24). "Rates of dinitrogen fixation and the abundance of diazotrophs in North American coastal waters between Cape Hatteras and Georges Bank". Limnology and Oceanography. 57 (4): 1067–1083. Bibcode:2012LimOc..57.1067M. doi:10.4319/lo.2012.57.4.1067. hdl:2060/20140006592. ISSN 0024-3590. S2CID 13692577.
  12. ^ Sipler, Rachel E.; Gong, Donglai; Baer, Steven E.; Sanderson, Marta P.; Roberts, Quinn N.; Mulholland, Margaret R.; Bronk, Deborah A. (2017-07-28). "Preliminary estimates of the contribution of Arctic nitrogen fixation to the global nitrogen budget". Limnology and Oceanography Letters. 2 (5): 159–166. doi:10.1002/lol2.10046. ISSN 2378-2242. S2CID 90277458.
  13. ^ Widner, Brittany; Mordy, Calvin W.; Mulholland, Margaret R. (2017-11-20). "Cyanate distribution and uptake above and within the Eastern Tropical South Pacific oxygen deficient zone". Limnology and Oceanography. 63 (S1). doi:10.1002/lno.10730. ISSN 0024-3590. S2CID 103002246.
  14. ^ Cao, Xiaoyan; Mulholland, Margaret R.; Helms, John R.; Bernhardt, Peter W.; Duan, Pu; Mao, Jingdong; Schmidt-Rohr, Klaus (2017-11-21). "A Major Step in Opening the Black Box of High-Molecular-Weight Dissolved Organic Nitrogen by Isotopic Labeling of Synechococcus and Multibond Two-Dimensional NMR". Analytical Chemistry. 89 (22): 11990–11998. doi:10.1021/acs.analchem.7b02335. ISSN 0003-2700. PMID 29083864.
  15. ^ Coutu, Peter (November 2, 2018). "Tidal flooding could pose serious problems for Chesapeake Bay restoration, professor says". Virginian Pilot. Retrieved 2022-03-18.
  16. ^ Scauzillo, Steve (2019-03-16). "How areas flood, even on sunny days — it's a thing". San Gabriel Valley Tribune. Retrieved 2022-03-18.
  17. ^ "MARGARET MULHOLLAND". scholar.google.com. Retrieved 2022-03-18.

External links[edit]

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