Publications

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2019

Umhau BP, Benitez-Nelson CR, Close HG , Hannides CCS, Motta L, Popp BN, Blum JD, Drazen JC (2019) Seasonal and spatial changes in carbon and nitrogen fluxes estimated using 234Th:238U disequilibria in the North Pacific tropical and subtropical gyre. In Press, Marine Chemistry.  

Full text available until 1/1/20: https://authors.elsevier.com/c/1a2uG15DvW-f7n

Hurley SJ, Close HG , Elling FJ, Jasper CE, Gospodinova K, McNichol AP, Pearson A (2019) CO2-dependent carbon isotope fractionation in Archaea, Part II: The marine water column. Geochimica et Cosmochimica Acta, 261, 383-395. https://www.sciencedirect.com/science/article/pii/S0016703719303928
Motta LC, Blum JD, Johnson MW, Umhau BP, Popp BN, Washburn SJ, Drazen JC, Benitez-Nelson CR, Hannides CCS, Close HG , Lamborg CH (2019) Mercury cycling in the North Pacific Subtropical Gyre as revealed by mercury stable isotope ratios. Global Biogeochemical Cycles33, 777-794. https://doi.org/10.1029/2018GB006057
Close HG (2019) Compound-Specific Isotope Geochemistry in the Ocean. Annual Review of Marine Science11, 27-56.   http://www.annualreviews.org/eprint/vmm9CCiqvvP5BfhKCU8i/full/10.1146/annurev-marine-121916-063634

2018

Gloeckler K, Choy CA, Hannides CCS, Close HG , Goetze E, Popp BN, Drazen JC (2018) Stable isotope analysis of micronekton around Hawaii reveals suspended particles are an important nutritional source in the lower mesopelagic and upper bathypelagic zones. Limnology and Oceanography63, 1168-1180. doi: 10.1002/lno.10762.
Hurley SJ, Lipp JS, Close HG , Hinrichs K-U, Pearson A (2018) Distribution and export of isoprenoid tetraether lipids in suspended particulate matter from the water column of the Western Atlantic Ocean. Organic Geochemistry, 116, 90-102.

2017

Ohkouchi N, Chikaraishi Y, Close HG , Fry B, Larsen T, Madigan DJ, McCarthy MD, McMahon KW, Nagata T, Naito YI, Ogawa NO, Popp BN, Steffan S, Takano Y, Tayasu I, Wyatt ASJ, Yamaguchi YT, Yokoyama Y (2017) Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies. Organic Geochemistry, 113, 150-174.
Fassbender AJ & 73 others (2017) Perspectives on Chemical Oceanography in a changing environment: Participants of the COME ABOARD Meeting examine the field in the context of 40 years of DISCO. Marine Chemistry, 196, 181-190.
Jarman CL, Larsen T, Hunt T, Lipo C, Solsvik R, Wallsgrove N, Ka’apu-Lyons C, Close HG , Popp BN (2017) Diet of the prehistoric population of Rapa Nui (Easter Island, Chile) shows environmental adaptation and resilience. American Journal of Physical Anthropology, 164, 343-361.

Earlier

Close HG , Wakeham SG, Pearson A (2014) Lipid and 13C signatures of submicron and suspended particulate organic matter in the Eastern Tropical North Pacific: Implications for the contribution of Bacteria. Deep-Sea Research Part 1, 85, 15-34.
Close HG , Shah SR, Ingalls AE, Diefendorf AF, Brodie EL, Hansman RL, Freeman KH, Aluwihare LI, Pearson A (2013) Export of submicron particulate organic matter to mesopelagic depth in an oligotrophic gyre. Proceedings of the National Academy of Sciences of the USA, 110, 12565-12570. Cited for ASLO 2015 Lindeman Award
Close HG (2012) Size-related isotopic heterogeneity in lipids from the marine water column. Dissertation, Harvard University.
Close HG , Bovee R, Pearson A (2011) Inverse carbon isotope patterns of lipids and kerogen record heterogeneous primary biomass. Geobiology, 9, 250-265.
Pearson A, Leavitt WD, Saenz JP, Summons RE, Tam MC-M, Close HG (2009) Diversity of hopanoids and squalene-hopene cyclases across a tropical land-sea gradient. Environmental Microbiology, 11, 1208-1223 .