Branwen in Qikiqtarjuaq, Nunavut Canada in July 2015

Assistant Professor of Environmental Science
W.M. Keck Science Department
Claremont McKenna - Pitzer - Scripps Colleges
925 N. Mills Ave
Claremont, California 91711

bwilliams at

Please note that this site is continually under construction. 

My research works to understand mechanisms driving natural variability in chemical, biological, and physical oceanography, along with the response of the ocean to anthropogenic climate change.  I use geochemical and sclerochronological techniques to generate environmental reconstructions from marine proxy archives to address these issues. 


10/25/16 Congrats to lab alum Jessica Ng for her first authored paper on Algal Proxy System Modeling based on her senior thesis (

10/5/16 Branwen is interviewed for an article "Climate Change Explained" (

9/01/16 Branwen is featured on National Geographic's best job ever series:

7/15/16 We are growing deep-sea corals! Collected by the E/V Nautilus crew from off the coast of southern California, we have three species of deep-sea corals for culturing experiments.

2/22/16 Sarah Barnes (right) and Dr. Kelton McMahon are presenting their research on deep-sea corals at he Sciences Meeting in New Orleans

2/17/16 Branwen is giving a science seminar at the University of La Verne.

12/14/15 AGU week! Branwen is presenting a reconstruction of Aleutian climate on Dec 14th (PP13D-01) and Kelton McMahon is presenting compound specific stable isotope measurements in deep-sea corals on Dec 15th (B22B-03).

12/11/15 Branwen was quoted in the Santa Cruz Sentinal ( on a recent publication in science by Dr. Kelton McMahon ( in the journal Science (10.1126/science.aaa9942)

11/17/15 Our paper on A
ge, Growth Rates, and Paleoclimate Studies of deep-sea corals published in NOAA's The State of Deep-Sea Coral and Sponge Ecosystems of the United States: 2015 is available online:

10/24/15 Branwen spoke at the Ecology of Community: Process, Identity, and Transformation hosted by the Claremont School of Theology.

10/16/15 Thank you to Dr. Ryan Moyer with the Florida Fish and Wildlife Research Institute  for the invitation to speak at the University of South Florida College of Marine Sciences. My talk can be viewed here: and  

9/29/15 Branwen is presenting at Know Tomorrow Claremont on October 2nd.

7/1 - 7/7/15 Branwen is in Nunavut, collecting coralline algae samples from under the sea ice with Eric Brossier ( and Jochen Halfar (

6/29/15 Scripps College student Tricia Light is doing summer research through an NSF REU at University of Texas Marine Science Institute. Read about her research here: Lab Blog.

6/23/15 Branwen is back from a coralline algae collecting trip in Acadia National Park, Maine.  Bailey Moritz, a Bowdoin student interning at Hurricane Island blogged about is here:  The collected algae were delivered to Justin Ries (  to be cultured under different temperatures and concentrations of CO2 this summer, with the support of NSF Chemical Oceanography and Biological Oceanography.

5/25-5/28/15 Branwen is in Singapore, meeting colleagues at Yale-NUS:

5/21/15 The cruise report for “Patterns in Deep-Sea Corals” Expedition: NOAA ship Bell M. Shimada SH-15-03 is available here: 

5/4-5/6/15 Branwen attended the Proxy System Modeling workshop at USC's Wrigley Institute on Catalina Island. Thanks to Julien Emile-Geay ( for organizing.

4/11/15  Scripps College featured our research in a news story:

4/3/15 Our research in the Channel Islands National Marine Sanctuaries with Dr. Peter Etnoyer and MARE ( was featured in the LA Times. Click through for the full story:

4/1/15 Our chapter on Environmental Contaminants has been published here:  Thank you to Dr. Jessica Carilli ( for leading this review.  Please contact me via email if you would like a reprint.

3/23/15 Devyn Parks is blogging about her time on the R/V Bell Shimada here: Lab Blog

3/12/15 Branwen and Devyn Parks are headed out to sea with NOAA on the R/V Shimada in the Channel Islands. 

2/17/2015 We are very excited to invite Dr. Elke Weber into EA30L: Science and the Environment to discuss risk and the perception of global warming.

1/27/2015 Honoured to be included in The Oceanography Society issue Women in Oceanography: A Decade Later (

12/15/2014 It's AGU week.  Come see our session High-Resolution Archives of Marine Biogeochemistry, Climate, and Environmental Change on 12/19, talks in the morning and posters in the afternoon. 

12/11/2014 Please see our new white paper for documenting marine annually-resolved proxy archives:  Feedback is welcome!

10/7/14 Branwen gave the Whole Earth Seminar at UCSC. Thank you to Adina Paytan for hosting!

10/2/14 Congratulations to Tricia Light and Sarah Barnes on their Scripps Environmental Analysis awards.

9/22-10/21/14 Branwen is in Santa Cruz with a visiting position at USGS/UCSC.  

9/24/14 A year delayed, but we are finally updating the members in our lab. Please see the people tab for current lab members and some of the alumni.

6/6/14 Branwen is presenting on Mg/Ca in coralline algae at the Goldschmidt conference on June 10th in the session Biogeochemistry of Biological Systems ( 

5/16/14 Williams Lab group: (top L to bottom right) Sarah Barnes, Jessica Ng, Andrew Walnum, Hannah Tannenbaum, Ellie Smith, Evelyn Byer, Tricia Light, Sasha Ponomareva, Tiffany Ortamond, Branwen Williams (and kids).