| Dependence of phytoplankton carbon isotopic composition on growth rate and [CO2) aq: Theoretical considerations and experimental results EA Laws, BN Popp, RR Bidigare, MC Kennicutt, SA Macko Geochimica et cosmochimica acta 59 (6), 1131-1138, 1995 | 894 | 1995 |
| Isotopic fractionation of nitrogen and carbon in the synthesis of amino acids by microorganisms SA Macko, ML Fogel, PE Hare, TC Hoering Chemical Geology: Isotope Geoscience section 65 (1), 79-92, 1987 | 638 | 1987 |
| Isotopic evidence for extraterrestrial non-racemic amino acids in the Murchison meteorite MH Engel, SA Macko Nature 389 (6648), 265-268, 1997 | 609 | 1997 |
| Kinetic fractionation of stable nitrogen isotopes during amino acid transamination SA Macko, MLF Estep, MH Engel, PE Hare Geochimica et Cosmochimica Acta 50 (10), 2143-2146, 1986 | 510 | 1986 |
| Microbial alteration of stable nitrogen and carbon isotopic compositions of organic matter SA Macko, MLF Estep Organic Geochemistry 6, 787-790, 1984 | 450 | 1984 |
| Deep-sea hydrocarbon seep communities: evidence for energy and nutritional carbon sources JM Brooks, MC Kennicutt, CR Fisher, SA Macko, K Cole, JJ Childress, ... Science 238 (4830), 1138-1142, 1987 | 393 | 1987 |
| Correlations between foliar δ15N and nitrogen concentrations may indicate plant-mycorrhizal interactions EA Hobbie, SA Macko, M Williams Oecologia 122, 273-283, 2000 | 370 | 2000 |
| Insights into nitrogen and carbon dynamics of ectomycorrhizal and saprotrophic fungi from isotopic evidence EA Hobbie, SA Macko, HH Shugart Oecologia 118, 353-360, 1999 | 366 | 1999 |
| Anomalous CH4 and NH4+ concentrations at an unsedimented mid-ocean-ridge hydrothermal system MD Lilley, DA Butterfield, EJ Olson, JE Lupton, SA Macko, RE McDuff Nature 364 (6432), 45-47, 1993 | 357 | 1993 |
| Nitrogen cycling in the soil–plant system along a precipitation gradient in the Kalahari sands JN Aranibar, L Otter, SA Macko, CJW Feral, HE Epstein, PR Dowty, ... Global Change Biology 10 (3), 359-373, 2004 | 352 | 2004 |
| Stable carbon isotope analysis of amino acid enantiomers by conventional isotope ratio mass spectrometry and combined gas chromatography/isotope ratio mass spectrometry JA Silfer, MH Engel, SA Macko, EJ Jumeau Analytical Chemistry 63 (4), 370-374, 1991 | 345 | 1991 |
| Natural abundance of 13C and 15N in C3 and C4 vegetation of southern Africa: patterns and implications RJ Swap, JN Aranibar, PR Dowty, WP Gilhooly III, SA Macko Global Change Biology 10 (3), 350-358, 2004 | 343 | 2004 |
| Carbon isotope composition of individual amino acids in the Murchison meteorite MH Engel, SA Macko, JA Silfer Nature 348 (6296), 47-49, 1990 | 343 | 1990 |
| Abiogenic methanogenesis in crystalline rocks BS Lollar, SK Frape, SM Weise, P Fritz, SA Macko, JA Welhan Geochimica et Cosmochimica Acta 57 (23-24), 5087-5097, 1993 | 310 | 1993 |
| Sources of nitrogen in wet deposition to the Chesapeake Bay region KM Russell, JN Galloway, SA Macko, JL Moody, JR Scudlark Atmospheric Environment 32 (14-15), 2453-2465, 1998 | 309 | 1998 |
| Pollution studies using stable isotopes SA Macko Stable isotopes in ecology and environmental science, 1994 | 309 | 1994 |
| Role of seagrasses and mangroves in estuarine food webs: temporal and spatial changes in stable isotope composition and amino acid content during decomposition JC Zieman, SA Macko, AL Mills Bulletin of Marine Science 35 (3), 380-392, 1984 | 301 | 1984 |
| EVIDENCE A PHOTOPROTECTIVE FOR SECONDARY CAROTENOIDS OF SNOW ALGAE1 RR Bidigare, ME Ondrusek, MC Kennicutt, R Iturriaga, HR Harvey, ... Journal of Phycology 29 (4), 427-434, 1993 | 286 | 1993 |
| Organic geochemistry: principles and applications MH Engel, SA Macko Springer science & business media, 2013 | 282 | 2013 |
| Documenting the diet in ancient human populations through stable isotope analysis of hair SA Macko, MH Engel, V Andrusevich, G Lubec, TC O'Connell, ... Philosophical Transactions of the Royal Society of London. Series B …, 1999 | 273 | 1999 |
Robert SwapNASA Goddard Space Flight CenterVerified email at nasa.gov
