Phoebe Chans bilde

Phoebe Chan

  • E-postPhoebe.Chan@uib.no
  • Telefon+47 55 58 98 72
  • Besøksadresse
    Realfagbygget, Allégt. 41
  • Postadresse
    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 algae 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., 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 DE 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, DB, Steneck, RS, Estes, JA, Halfar, J., Kroeker, K.J., Ries, J.D.,  Chan P.TW. , Fietzke, J., Konar, B.H., Norley, C.J., Weitzman, B.P., and Westfield, IT 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.