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1

From radiocarbon analysis to interpretation: A comment on “Phytolith Radiocarbon Dating in Archaeological and Paleoecological Research: A Case Study of Phytoliths from Modern Neotropical Plants and a Review of the Previous Dating Evidence”, Journal of Archaeological Science (2015), doi: 10.1016/j.jas.2015.06.002.” by Dolores R. Piperno

Santos, Guaciara M., Alexandre, Anne, Prior, Christine A.

Journal:

Journal of Archaeological Science

Year:

2016

Language:

english

File:

PDF, 1.18 MB

english, 2016

2

Recent (

Christiane Kramer, Susan Trumbore, Mats Fröberg, Luz Maria Cisneros Dozal, Dachun Zhang, Xiaomei Xu, Guaciara M. Santos, Paul J. Hanson

Journal:

Soil Biology and Biochemistry

Year:

2010

Language:

english

File:

PDF, 570 KB

english, 2010

3

Plant growth conditions alter phytolith carbon

Gallagher, Kimberley L., Alfonso-Garcia, Alba, Sanchez, Jessica, Potma, Eric O., Santos, Guaciara M.

Journal:

Frontiers in Plant Science

Year:

2015

Language:

english

File:

PDF, 1.14 MB

english, 2015

4

Improved radiocarbon analyses of modern human hair to determine the year-of-death by cross-flow nanofiltered amino acids: common contaminants, implications for isotopic analysis, and recommendations

Santos, Guaciara M., De La Torre, Hector A. Martinez, Boudin, Mathieu, Bonafini, Marco, Saverwyns, Steven

Journal:

Rapid Communications in Mass Spectrometry

Year:

2015

Language:

english

File:

PDF, 400 KB

english, 2015

5

234U and 230Th determination by FIA-ICP-MS and application to uranium-series disequilibrium in marine samples

Maria Luiza D.P. Godoy, José Marcus Godoy, Renato Kowsmann, Guaciara M. dos Santos, Rosana Petinatti da Cruz

Journal:

Journal of Environmental Radioactivity

Year:

2006

Language:

english

File:

PDF, 182 KB

english, 2006

6

The Phytolith Carbon Sequestration Concept: Fact or Fiction? A comment on “Occurrence, turnover and carbon sequestration potential of phytoliths in terrestrial ecosystems by Song et al. doi: 10.1016/j.earscirev.2016.04.007”

Santos, Guaciara M., Alexandre, Anne

Journal:

Earth-Science Reviews

Year:

2016

Language:

english

File:

PDF, 434 KB

english, 2016

7

Δ14C and Δ13C of Seawater DIC as Tracers of Coastal Upwelling: A 5-Year Time Series from Southern California

Santos, Guaciara M, Ferguson, Julie, Acaylar, Karla, Johnson, Kathleen R, Griffin, Sheila, Druffel, Ellen

Journal:

Year:

2011

Language:

english

File:

PDF, 4.76 MB

english, 2011

8

The Keck Carbon Cycle AMS Laboratory, University of California, Irvine: Status Report

Beverly, Robert K, Beaumont, Will, Tauz, Denis, Ormsby, Kaelyn M, von Reden, Karl F, Santos, Guaciara M, Southon, John R

Journal:

Year:

2010

Language:

english

File:

PDF, 587 KB

english, 2010

9

When the carbon being dated is not what you think it is: Insights from phytolith carbon research

Santos, Guaciara M., Masion, Armand, Alexandre, Anne

Journal:

Quaternary Science Reviews

Year:

2018

Language:

english

File:

PDF, 1.22 MB

english, 2018

10

Re-anchoring the late Pleistocene tephrochronology of New Zealand based on concordant radiocarbon ages and combined 238U/230Th disequilibrium and (U–Th)/He zircon ages

Martin Danišík, Phil Shane, Axel K. Schmitt, Alan Hogg, Guaciara M. Santos, Sonja Storm, Noreen J. Evans, L. Keith Fifield, Jan M. Lindsay

Journal:

Earth and Planetary Science Letters

Year:

2012

Language:

english

File:

PDF, 948 KB

english, 2012

11

Behavioral Variability in ABA Chemical Pretreatment Close to the 14C Age Limit

Santos, Guaciara M, Ormsby, Kaelyn

Journal:

Year:

2013

Language:

english

File:

PDF, 236 KB

english, 2013

12

Unambiguous evidence of old soil carbon in grass biosilica particles

Reyerson, Paul E., Alexandre, Anne, Harutyunyan, Araks, Corbineau, Remi, Martinez De La Torre, Hector A., Badeck, Franz, Cattivelli, Luigi, Santos, Guaciara M.

Journal:

Year:

2016

Language:

english

File:

PDF, 3.56 MB

english, 2016

13

Towards producing pure phytolith concentrates from plants that are suitable for carbon isotopic analysis

Corbineau, Rémi, Reyerson, Paul E., Alexandre, Anne, Santos, Guaciara M.

Journal:

Review of Palaeobotany and Palynology

Year:

2013

Language:

english

File:

PDF, 1.79 MB

english, 2013

14

Nonannual tree rings in a climate-sensitive Prioria copaifera chronology in the Atrato River, Colombia

Herrera-Ramirez, David, Andreu-Hayles, Laia, del Valle, Jorge I., Santos, Guaciara M., Gonzalez, Paula L. M.

Journal:

Ecology and Evolution

Year:

2017

Language:

english

File:

PDF, 1.37 MB

english, 2017

15

Using radiocarbon to constrain black and organic carbon aerosol sources in Salt Lake City

Mouteva, Gergana O., Randerson, James T., Fahrni, Simon M., Bush, Susan E., Ehleringer, James R., Xu, Xiaomei, Santos, Guaciara M., Kuprov, Roman, Schichtel, Bret A., Czimczik, Claudia I.

Journal:

Journal of Geophysical Research Atmospheres

Year:

2017

Language:

english

File:

PDF, 937 KB

english, 2017

16

Source signatures from combined isotopic analyses of PM2.5 carbonaceous and nitrogen aerosols at the peri-urban Taehwa Research Forest, South Korea in summer and fall

Lim, Saehee, Lee, Meehye, Czimczik, Claudia I., Joo, Taekyu, Holden, Sandra, Mouteva, Gergana, Santos, Guaciara M., Xu, Xiaomei, Walker, Jennifer, Kim, Saewung, Kim, Hyun Seok, Kim, Soyoung, Lee, Sang

Journal:

Science of The Total Environment

Year:

2019

Language:

english

File:

PDF, 1.73 MB

english, 2019

17

Radiocarbon analysis confirms annual periodicity in Cedrela odorata tree rings from the equatorial Amazon

Santos, Guaciara M., Granato-Souza, Daniela, Barbosa, Ana Carolina, Oelkers, Rose, Andreu-Hayles, Laia

Journal:

Quaternary Geochronology

Year:

2020

File:

PDF, 2.01 MB

2020

18

Changes in Holocene tree cover density in Cabo Frio (Rio de Janeiro, Brazil): Evidence from soil phytolith assemblages

Coe, Heloisa H.G., Alexandre, Anne, Carvalho, Cacilda N., Santos, Guaciara M., da Silva, Antonio S., Sousa, Leandro O.F., Lepsch, Igo F.

Journal:

Quaternary International

Year:

2013

Language:

english

File:

PDF, 1.86 MB

english, 2013

19

Misunderstandings Concerning the Significance of AMS Background 14C Measurements

Taylor, R E, Southon, John R, Santos, Guaciara M

Journal:

Year:

2018

Language:

english

File:

PDF, 897 KB

english, 2018

20

Smoke radiocarbon measurements from Indonesian fires provide evidence for burning of millennia-aged peat

Wiggins, Elizabeth B., Czimczik, Claudia I., Santos, Guaciara M., Chen, Yang, Xu, Xiaomei, Holden, Sandra R., Randerson, James T., Harvey, Charles F., Kai, Fuu Ming, Yu, Liya E.

Journal:

Proceedings of the National Academy of Sciences

Year:

2018

Language:

english

File:

PDF, 1.13 MB

english, 2018

21

Bag of Tricks: A Set of Techniques and other Resources to Help 14C Laboratory Setup, Sample Processing, and Beyond

Santos, Guaciara M, Xu, Xiaomei

Journal:

Year:

2016

Language:

english

File:

PDF, 225 KB

english, 2016

22

Age of riverine carbon suggests rapid export of terrestrial primary production in tropics

Martin, Erin E., Ingalls, Anitra E., Richey, Jeffrey E., Keil, Richard G., Santos, Guaciara M., Truxal, Laura T., Alin, Simone R., Druffel, Ellen R. M.

Journal:

Geophysical Research Letters

Year:

2013

Language:

english

File:

PDF, 391 KB

english, 2013

23

Blank Assessment for Ultra-Small Radiocarbon Samples: Chemical Extraction and Separation Versus AMS

Santos, Guaciara M, Southon, John R, Drenzek, Nicholas J, Ziolkowski, Lori A, Druffel, Ellen, Xu, Xiaomei, Zhang, Dachun, Trumbore, Susan, Eglinton, Timothy I, Hughen, Konrad A

Journal:

Year:

2010

Language:

english

File:

PDF, 357 KB

english, 2010

24

Cs Feed Tests and Emittance Measurements on a Modified MC-SNICS Ion Source for Radiocarbon AMS

Southon, John, Santos, Guaciara dos, Han, Baoxi

Journal:

Year:

2007

Language:

english

File:

PDF, 3.77 MB

english, 2007

25

Reassessment of the 13 C/ 12 C and 14 C/ 12 C isotopic fractionation ratio and its impact on high-precision radiocarbon dating

Fahrni, Simon M., Southon, John R., Santos, Guaciara M., Palstra, Sanne W.L., Meijer, Harro A.J., Xu, Xiaomei

Journal:

Geochimica et Cosmochimica Acta

Year:

2017

Language:

english

File:

PDF, 1.79 MB

english, 2017

26

The Keck Carbon Cycle AMS Laboratory, University of California, Irvine: Initial Operation and a Background Surprise

Southon, John, Santos, Guaciara, Druffel-Rodriguez, Kevin, Druffel, Ellen, Trumbore, Sue, Xu, Xiaomei, Griffin, Sheila, Ali, Shahla, Mazon, Maya

Journal:

Year:

2004

Language:

english

File:

PDF, 309 KB

english, 2004

27

HPLC Purification of Higher Plant-Dervied Lignin Phenols for Compound Specific Radiocarbon Analysis

Ingalls, Anitra E., Ellis, Erin E., Santos, Guaciara M., McDuffee, Kelsey E., Truxal, Laura, Keil, Richard G., Druffel, Ellen R. M.

Journal:

Analytical Chemistry

Year:

2010

Language:

english

File:

PDF, 326 KB

english, 2010

28

Comment on Atmospheric carbon isotope signatures in phytolith occluded carbon, Carter, J.A., Quaternary International, this volume

Guaciara M. dos Santos

Journal:

Quaternary International

Year:

2009

Language:

english

File:

PDF, 104 KB

english, 2009

29

Matching Dendrochronological Dates with the Southern Hemisphere 14C Bomb Curve to Confirm Annual Tree Rings in Pseudolmedia rigida from Bolivia

Andreu-Hayles, Laia, Santos, Guaciara, Herrera-Ramírez, David, Martin-Fernández, Javier, Ruiz-Carrascal, Daniel, Boza-Espinoza, Tatiana, Fuentes, Alfredo, Jørgensen, Peter

Journal:

Year:

2015

Language:

english

File:

PDF, 3.81 MB

english, 2015

30

Variability of Monthly Radiocarbon During the 1760S in Corals from the Galapagos Islands

Druffel, Ellen R M, Griffin, Sheila, Hwang, Jeomshik, Komada, Tomoko, Beaupre, Steven R, Druffel-Rodriguez, Kevin C, Santos, Guaciara M, Southon, John

Journal:

Year:

2004

Language:

english

File:

PDF, 205 KB

english, 2004

31

Understanding Holocene variations in the vegetation of Sao Joao River basin, southeastern coast of Brazil, using phytolith and carbon isotopic analyses

Coe, Heloisa H.G., Macario, Kita, Gomes, Jenifer G., Chueng, Karina F., Oliveira, Fabiana, Gomes, Paulo R.S., Carvalho, Carla, Linares, Roberto, Alves, Eduardo, Santos, Guaciara M.

Journal:

Palaeogeography, Palaeoclimatology, Palaeoecology

Year:

2014

Language:

english

File:

PDF, 1.23 MB

english, 2014

32

Advances in the graphitization protocol at the Radiocarbon Laboratory of the Universidade Federal Fluminense (LAC-UFF) in Brazil

Macario, Kita D., Oliveira, Fabiana M., Carvalho, Carla, Santos, Guaciara M., Xu, Xiaomei, Chanca, Ingrid S., Alves, Eduardo Q., Jou, Renata M., Oliveira, Maria Isabela, Pereira, Bruna B., Moreira, Vi

Journal:

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Year:

2015

Language:

english

File:

PDF, 851 KB

english, 2015

33

AIP Conference Proceedings [AIP IX LATIN AMERICAN SYMPOSIUM ON NUCLEAR PHYSICS AND APPLICATIONS - Quito, Ecuador (18–22 July 2011)] - Beyond archaeology: 14C-AMS and the global carbon cycle

Santos, Guaciara M.

Year:

2012

Language:

english

File:

PDF, 554 KB

english, 2012

34

A comparison of U/Th and rapid-screen 14 C dates from Line Island fossil corals

Grothe, Pamela R., Cobb, Kim M., Bush, Shari L., Cheng, Hai, Santos, Guaciara M., Southon, John R., Lawrence Edwards, R., Deocampo, Daniel M., Sayani, Hussein R.

Journal:

Geochemistry, Geophysics, Geosystems

Year:

2016

Language:

english

File:

PDF, 846 KB

english, 2016

35

Simple, Rapid, and Cost Effective: A Screening Method for 14C Analysis of Small Carbonate Samples

Bush, Shari L, Santos, Guaciara M, Xu, Xiaomei, Southon, John R, Thiagarajan, Nivedita, Hines, Sophia K, Adkins, Jess F

Journal:

Year:

2013

Language:

english

File:

PDF, 906 KB

english, 2013

36

Publisher’s Note

Santos, Guaciara M., Alexandre, Anne, Prior, Christine A.

Journal:

Journal of Archaeological Science

Year:

2016

Language:

english

File:

PDF, 740 KB

english, 2016

37

Does Cedrela always form annual rings? Testing ring periodicity across South America using radiocarbon dating

Baker, Jessica C. A., Santos, Guaciara M., Gloor, Manuel, Brienen, Roel J. W.

Journal:

Year:

2017

Language:

english

File:

PDF, 5.91 MB

english, 2017

38

Life with MC-SNICS. Part II: Further ion source development at the Keck carbon cycle AMS facility

John Southon, Guaciara M. Santos

Journal:

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Year:

2007

Language:

english

File:

PDF, 996 KB

english, 2007

39

Dynamic Nuclear Polarization NMR as a new tool to investigate the nature of organic compounds occluded in plant silica particles

Masion, Armand, Alexandre, Anne, Ziarelli, Fabio, Viel, Stéphane, Santos, Guaciara M.

Journal:

Scientific Reports

Year:

2017

Language:

english

File:

PDF, 1.35 MB

english, 2017

40

Cs Feed Tests and Emittance Measurements on a Modified MC-SNICS Ion Source for Radiocarbon AMS

Southon, John, Santos, Guaciara dos, Han, Baoxi

Journal:

Year:

2007

File:

PDF, 3.77 MB

2007

41

The Phytolith 14C Puzzle: A Tale of Background Determinations and Accuracy Tests

Santos, Guaciara M, Alexandre, Anne, Coe, Heloisa H G, Reyerson, Paul E, Southon, John R, De Carvalho, Cacilda N

Journal:

Year:

2010

Language:

english

File:

PDF, 657 KB

english, 2010

42

Behavioral Variability in ABA Chemical Pretreatment Close to the 14C Age Limit

Santos, Guaciara

Journal:

Year:

2013

File:

PDF, 211 KB

2013

43

Blank Corrections for Ramped Pyrolysis Radiocarbon Dating of Sedimentary and Soil Organic Carbon

Fernandez, Alvaro, Santos, Guaciara M., Williams, Elizabeth K., Pendergraft, Matthew A., Vetter, Lael, Rosenheim, Brad E.

Journal:

Analytical Chemistry

Year:

2014

Language:

english

File:

PDF, 952 KB

english, 2014

44

Radiocarbon measurements at LAC-UFF: Recent performance

Linares, Roberto, Macario, Kita D., Santos, Guaciara M., Carvalho, Carla, dos Santos, Hellen C., Gomes, Paulo R.S., Castro, Maikel D., Oliveira, Fabiana M., Alves, Eduardo Q.

Journal:

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

Year:

2015

Language:

english

File:

PDF, 942 KB

english, 2015

45

Assessment of the regional fossil fuel CO2 distribution through Δ14C patterns in ipê leaves: The case of Rio de Janeiro state, Brazil

Santos, Guaciara M., Oliveira, Fabiana M., Park, Junghun, Sena, Ana C.T., Chiquetto, Júlio B., Macario, Kita D., Grainger, Cassandra S.G.

Journal:

City and Environment Interactions

Year:

2019

Language:

english

File:

PDF, 2.56 MB

english, 2019

46

Annual growth rings in a sample of Paraná pine (Araucaria angustifolia): Toward improving the 14C calibration curve for the Southern Hemisphere

Santos, Guaciara M., Linares, Roberto, Lisi, Claudio S., Tomazello Filho, Mario

Journal:

Quaternary Geochronology

Year:

2015

Language:

english

File:

PDF, 1.79 MB

english, 2015

47

Annual nature of the growth rings of Araucaria araucana confirmed by radiocarbon analysis

Hadad, MartínA., Santos, Guaciara M., Roig Juñent, Fidel A., Grainger, Cassandra S.G.

Journal:

Quaternary Geochronology

Year:

2015

Language:

english

File:

PDF, 1.14 MB

english, 2015

48

Temporal deconvolution of vascular plant-derived fatty acids exported from terrestrial watersheds

Vonk, Jorien E., Drenzek, Nicholas J., Hughen, Konrad A., Stanley, Rachel H.R., McIntyre, Cameron, Montluçon, Daniel B., Giosan, Liviu, Southon, John R., Santos, Guaciara M., Druffel, Ellen R.M., Ande

Journal:

Geochimica et Cosmochimica Acta

Year:

2018

Language:

english

File:

PDF, 2.47 MB

english, 2018

49

Method development for 234U and 230Th determination and application to fossil deep-water coral and authigenic carbonate dating from the Campos Basin - Brazil

Vivone, Ronaldo J., Godoy, Maria Luiza D. P., Godoy, José Marcus, Santos, Guaciara M.

Journal:

Journal of the Brazilian Chemical Society

Year:

2012

Language:

english

File:

PDF, 953 KB

english, 2012

50

Carbon Isotope Measurements of Surface Seawater from a Time-Series Site Off Southern California

Hinger, Elise N, Santos, Guaciara M, Druffel, Ellen R M, Griffin, Sheila

Journal:

Year:

2010

Language:

english

File:

PDF, 1.39 MB

english, 2010

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