Phoebe Chan's picture

Phoebe Chan

  • E-mailPhoebe.Chan@uib.no
  • Phone+47 55 58 98 72
  • Visitor Address
    Jahnebakken 5
    5007 Bergen
  • Postal Address
    Postboks 7803
    5020 Bergen

The focus of my research is to understand past changes in the Earth’s climate and environment using annually-banded crustose coralline algae as a proxy archive. I examine algal skeletons obtained from Arctic and Subarctic regions of the North Pacific and North Atlantic Oceans using a combination of geochemical techniques, increment analyses, microscopic mapping, and micro-computed tomography in order to better understand past changes in Arctic sea-ice extent, productivity, sea surface temperature, salinity, and ocean acidification.

Peer-Reviewed Publications

1) Hou, A., Halfar, J., Adey, A., Wortmann, U.G., Zajacz, Z., Tsay, A., Williams, B. and Chan, P. Long-lived coralline alga records multidecadal variability in Labrador Sea carbon isotopes. 2018. Article in press Chemical Geology. DOI: 10.1016/j.chemgeo.2018.02.026. https://www.sciencedirect.com/science/article/pii/S0009254118300974

2) Chan, P., Halfar, J., Norley, C.J.D., Pollmann, S., Holdsworth, D.W., Adey, W., and Steneck, R. Micro-Computed Tomography: Applications for High-Resolution Skeletal Density Determinations in Annually-Resolved Crustose Coralline Algae. 2017. Geochemistry, Geophysics, Geosystems. DOI: 10.1002/2017GC006966. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017GC006966.

3) Chan, P., Halfar, J., Adey, W., Hetzinger, S., Zack, T., Moore, G.W.K., Wortmann, U.G., Williams, B., and Hou, A. 2017. Multicentennial Record of Labrador Sea Primary Productivity and Sea-Ice Variability Archived in Coralline Algal Barium. Nature Communications. DOI: 10.1038/ncomms15543. https://www.nature.com/articles/ncomms15543.

4) Chan, P., Halfar, J., Williams, B., Hetzinger, S., Steneck, R., Zack, T. and Jacob D. E. 2011. Freshening of the Alaska Coastal Current recorded by coralline algal Ba/Ca ratios. Journal of Geophysical Research – Biogeosciences. DOI: 10.1029/2010JG001548. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JG001548.

5) Halfar, J., Williams, B., Hetzinger, S., Steneck, R., Lebednik, P., Winsborough, C., Omar, A. and Chan, P. and A.D. Wanamaker Jr. 2011. 225 years of Bering Sea climate and ecosystem dynamics archived by coralline algae. Geology. DOI: 10.1130/g31996.1. https://pubs.geoscienceworld.org/gsa/geology/article/39/6/579/130620/225-years-of-Bering-Sea-climate-and-ecosystem



1) Rasher, D.B., Steneck, R.S., Estes, J.A., Halfar, J., Kroeker, K.J., Ries, J.D., Chan P.T.W., Fietzke, J., Konar, B.H., Norley, C.J.D., Weitzman, B.P., and Westfield, I.T. Climate Change Amplifies Trophic Cascades in a Kelp Forest Ecosystem. In review.

2) Chan, P.T.W., Halfar, J., Adey, W., Lebednik, P.A., Steneck, R., Norley, C.J.D., and Holdsworth, D.W. Recent skeletal density decline in wild-collected Subarctic crustose coralline algae reveals climate change signature. In review.

3) Williams, B., Chan, P.T.W., Westfield, I., Rasher, D., Cleaver, C., and Ries, J. Species-specific response of the high-latitude calcifying coralline algae to future seawater temperatures and pCO2 concentrations. In preparation.