Phoebe Chan's picture

Phoebe Chan

  • E-mailPhoebe.Chan@uib.no
  • Phone+47 55 58 98 72
  • Visitor Address
    Jahnebakken 5
    5007 Bergen
    JB5 - 2150
  • 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.

Academic article
  • 2020. Keystone predators govern the pathway and pace of climate impacts in a subarctic marine ecosystem. Science. 1351-1354.

More information in national current research information system (CRIStin)

Peer-Reviewed Publications

1) Williams, B., Chan, P.T.W.*, Halfar, J., Hargan, K., and Adey, W. Arctic crustose coralline alga resilient to recent environmental change. In press at Limnology and Oceanography. Manuscript ID: LO-19-0453.R3

2) Rasher, D.B., Steneck, R.S., Halfar, J., Kroeker, K.J., Ries, J.B., Tinker, T.M., Chan P.T.W.*, Fietzke, J., Kamenos, N.A., Konar, B.H., Lefcheck, J.S., Norley, C.J.D., Weitzman, B.P., Westfield, I.T, and Estes, J.A. (2020). Keystone predators govern the pathway and pace of climate impacts in a subarctic marine ecosystem. Science. DOI: 10.1126/science.aav7515.        https://science.sciencemag.org/content/369/6509/1351

3) Chan, P.T.W.*, Halfar, J., Adey, W., Lebednik, P.A., Steneck, R., Norley, C.J.D. and Holdsworth, D.W. (2019). Recent density decline in wild-collected subarctic crustose coralline algae reveals climate change signature. Geology. DOI: 10.1130/G46804.1.    https://pubs.geoscienceworld.org/gsa/geology/article/48/3/226/579746/Recent-density-decline-in-wild-collected-subarctic

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

5) 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.

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

7) 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. DOI:10.1029/2010JG001548.  https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JG001548.

8) Halfar, J., Williams, B., Hetzinger, S., Steneck, R., Lebednik, P., Winsborough, C., Omar, A., 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


Manuscripts in Review or in Preparation

1) Williams, B., Chan, P.T.W.*, Westfield, I., Rasher, D., and Ries, J. Ocean acidification reduces skeletal density of hardground-forming high-latitude crustose coralline algae. In review at Geophysical Research Letters. Manuscript ID#: 2020GL089358.

2) Chan, P.T.W.*, Halfar, J., Adey, W., Lebednik, P.A., Steneck, R., Rasher, D., Norley, C.J.D. and Holdsworth, D.W. Skeletal density decline in wild-collected subarctic crustose coralline reveals depth-mediated response to climate change in Northwest Pacific. In preparation.

3) Chan, P.T.W.*, Ramusson, L., Zajacz, Z., Tsay, A., Halfar, J., Andersson, C., and Jansen, E., High-resolution baseline records of marine productivity in Northwest Svalbard based on isotopic and trace element records in crustose coralline algae. In preparation.