Steven D. Shema

Research Associate

Grótti ehf
Grundarstíg 4
101 Reykjavík
Iceland
Email: steven.shema@gmail.com

Education

M.A. University of Iceland
B.A. New York University

Recent Professional Experience

2016–Present, Managing Director, Grótti ehf
2009–2016, Independent Research Associate
2008–2013, Research Technician, Bigelow Laboratory for Ocean Sciences

Biographical Statement

Coming from a background in the performing arts and Old Norse literature, I have been engaged in marine science since 2008, primarily focusing on sensory ecology and the effects of climate change.

Research Interests

  • Zooplankton behavior and ecology
  • Effects of climate change on plankton
  • Monitoring and population dynamics of wild stocks of wrasse, lumpfish and European eel

Active projects

  • Effect of ocean acidification on Calanus spp. and other copepods (P.I. Howard Browman)
  • Fine-scale interactions in the plankton (P.I. Howard Browman)
  • In situ swimming and orientation ability of larval fishes and invertebrates (P.I. Howard Browman)
  • Population dynamics of wrasses along the Norwegian coast (P.I. Anne Berit Skiftesvik)

Publications

The Atlantic salmon (Salmo salar) antimicrobial peptide Cathelicidin-2 is a molecular host recognition signal for the salmon louse (Lepeophtheirus salmonis)

Núñez-Acuña, G., C. Gallardo-Escárate, D.M. Fields, S. Shema, A.B. Skiftesvik, I. Ormazábal & H.I. Browman. 2018. The Atlantic salmon (Salmo salar) antimicrobial peptide Cathelicidin-2 is a molecular host recognition signal for the salmon louse (Lepeophtheirus salmonis). Scientific Reports. In press.
Read the paper (coming soon)

Regulation of gene expression underpins tolerance of the Arctic copepod Calanus glacialis to increased pCO2.

Bailey, A., P. de Wit, P. Thor, H.I. Browman, R.M. Bjelland, S. Shema, D.M. Fields, J.A. Runge, C. Thompson & H. Hop. 2017. Regulation of gene expression underpins tolerance of the Arctic copepod Calanus glacialis to increased pCO2. Ecology and Evolution 2017: 1–16. https://doi.org/10.1002/ece3.3063
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Glass eels (Anguilla anguilla) have a magnetic compass linked to the tidal cycle.

Cresci, A., C.B. Paris, C.M.F. Durif, S. Shema, R. Bjelland, A.B. Skiftesvik & H.I. Browman. 2017. Glass eels (Anguilla anguilla) have a magnetic compass linked to the tidal cycle. Science Advances 3: e1602007, DOI: 10.1126/sciadv.1602007.
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Early life stages of the Arctic copepod Calanus glacialis are unaffected by increased seawater pCO2.

Bailey, A., P. Thor, H.I. Browman, D.M. Fields, J.A. Runge, A. Vermont, R. Bjelland, C. Thompson, S. Shema, C.M.F. Durif & H. Hop. 2017. Early life stages of the Arctic copepod Calanus glacialis are unaffected by increased seawater pCO2. ICES Journal of Marine Science 74: 996-1004.
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End of the century CO2 concentrations do not have a negative effect on vital rates of Calanus finmarchicus, an ecologically critical planktonic species in North Atlantic ecosystems.

Runge J.A., D.M. Fields, C.R.S. Thompson, S.D. Shema, R.M. Bjelland, C.M.F Durif, A.B. Skiftesvik & H.I. Browman. 2016. End of the century CO2 concentrations do not have a negative effect on vital rates of Calanus finmarchicus, an ecologically critical planktonic species in North Atlantic ecosystems. ICES Journal of Marine Science 73(3): 937-950.
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Infection of the planktonic copepod Calanus finmarchicus by the parasitic dinoflagellate, Blastodinium spp.: effects on grazing, respiration, fecundity, and fecal pellet production.

Fields, D.M., J.A. Runge, C. Thompson, S.D. Shema, R.M. Bjelland, C.M.F. Durif, A.B. Skiftesvik & H.I. Browman. 2015. Infection of the planktonic copepod Calanus finmarchicus by the parasitic dinoflagellate, Blastodinium spp.: effects on grazing, respiration, fecundity, and fecal pellet production. Journal of Plankton Research 37: 211-220.
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UV radiation changes algal stoichiometry but does not have cascading effects on a marine food chain.

Durif C.M.F., D.M. Fields, H.I. Browman, S.D. Shema, J.R. Enoae, A.B. Skiftesvik, R.M. Bjelland, R. Sommaruga & M.T. Arts. 2015. UV radiation changes algal stoichiometry but does not have cascading effects on a marine food chain. Journal of Plankton Research 37(6): 1120–36.
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The regeneration of highly bioavailable iron by meso- and microzooplankton.

Nuester J., S. Shema, A. Vermont, D.M. Fields, B.S. Twining. 2014. The regeneration of highly bioavailable iron by meso- and microzooplankton. Limnology and Oceanography 59(4): 1399–1409.
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Sub-lethal exposure to ultraviolet radiation reduces prey consumption by Atlantic cod larvae (Gadus morhua).

Fukunishi Y., H.I. Browman, C.M.F. Durif, R.M. Bjelland, S.D. Shema, D.M. Fields, A.B. Skiftesvik. 2013. Sub-lethal exposure to ultraviolet radiation reduces prey consumption by Atlantic cod larvae (Gadus morhua). Marine Biology 160(10): 2591-6.
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Effects of ocean acidification on growth and development of the planktonic copepod, Calanus finmarchicus.

Runge, J.A., C. Thompson, R.M. Bjelland, H.I. Browman, C.M.F. Durif, D.M. Fields, S. Shema & A.B. Skiftesvik. 2013. Effects of ocean acidification on growth and development of the planktonic copepod, Calanus finmarchicus. Poster presented at the U.S. National Science Foundation’s 2nd U.S. Ocean Acidification Principal Investigator’s Meeting. Washington, D.C., USA, 18-20 September 2013.
View the poster

Light Primes the Escape Response of the Calanoid Copepod, Calanus finmarchicus.

Fields D.M., S.D. Shema SD, H.I. Browman, T.Q. Browne & A.B. Skiftesvik. 2012. Light Primes the Escape Response of the Calanoid Copepod, Calanus finmarchicus. Plos ONE 7(6): e39594.
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Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation.

Fields, D.M., C.M.F. Durif, R.M. Bjelland, S.D. Shema, A.B. Skiftesvik & H.I. Browman. 2011. Grazing rates of Calanus finmarchicus on Thalassiosira weissflogii cultured under different levels of ultraviolet radiation. PLoS ONE 6(19) e26333.
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Last updated: July 2, 2018