Arctic mid-winter phytoplankton growth revealed by autonomous profilers

Despite polar night and thick sea ice, algae can grow in the wintertime Arctic Ocean. It is widely believed that during winter and spring, Arctic marine phytoplankton cannot grow until sea ice and snow cover start melting and transmit sufficient irradiance, but there is little observational evidence for that paradigm. To explore the life of phytoplankton during and after the polar night, we used robotic ice-avoiding profiling floats to measure ocean optics and phytoplankton characteristics continuously through two annual cycles in Baffin Bay, an Arctic sea that is covered by ice for 7 months a year. We demonstrate that net phytoplankton growth occurred even under 100% ice cover as early as February and that it resulted at least partly from photosynthesis. This highlights the adaptation of Arctic phytoplankton to extreme low-light conditions, which may be key to their survival before seeding the spring bloom.

[1]  T. Lacour,et al.  Response of the sea‐ice diatom Fragilariopsis cylindrus to simulated polar night darkness and return to light , 2019, Limnology and Oceanography.

[2]  T. Lacour,et al.  Decoupling light harvesting, electron transport and carbon fixation during prolonged darkness supports rapid recovery upon re-illumination in the Arctic diatom Chaetoceros neogracilis , 2019, Polar Biology.

[3]  A. Leynaert,et al.  Green Edge ice camp campaigns: understanding the processes controlling the under-ice Arctic phytoplankton spring bloom , 2019, Earth System Science Data.

[4]  F. D’Ortenzio,et al.  Quantifying Observational Errors in Biogeochemical‐Argo Oxygen, Nitrate, and Chlorophyll a Concentrations , 2019, Geophysical Research Letters.

[5]  N. Garcia,et al.  Environmental factors influencing the seasonal dynamics of spring algal blooms in and beneath sea ice in western Baffin Bay , 2019, Elementa: Science of the Anthropocene.

[6]  Fabrizio D'Ortenzio,et al.  ProVal: A New Autonomous Profiling Float for High Quality Radiometric Measurements , 2018, Front. Mar. Sci..

[7]  D. Swift,et al.  Assessing Phytoplankton Activities in the Seasonal Ice Zone of the Greenland Sea Over an Annual Cycle , 2018, Journal of Geophysical Research: Oceans.

[8]  E. Boss,et al.  Improved correction for non-photochemical quenching of in situ chlorophyll fluorescence based on a synchronous irradiance profile. , 2018, Optics express.

[9]  M. Greenacre,et al.  Fast reactivation of photosynthesis in arctic phytoplankton during the polar night1 , 2018, Journal of phycology.

[10]  J. Marra.  Faculty of 1000 evaluation for Extreme low light requirement for algae growth underneath sea ice: A case study from station nord, NE Greenland. , 2018 .

[11]  K. Hancke,et al.  Extreme Low Light Requirement for Algae Growth Underneath Sea Ice: A Case Study From Station Nord, NE Greenland: MINIMUM LIGHT REQUIREMENT FOR ICE ALGAE , 2018 .

[12]  R. Ferrari,et al.  Floats with bio-optical sensors reveal what processes trigger the North Atlantic bloom , 2018, Nature Communications.

[13]  L. Prieur,et al.  Unexpected winter phytoplankton blooms in the North Atlantic subpolar gyre , 2017 .

[14]  P. Pepin,et al.  Photosynthesis–irradiance parameters of marine phytoplankton: synthesis of a global data set , 2017 .

[15]  Fabrizio D'Ortenzio,et al.  Recommendations for obtaining unbiased chlorophyll estimates from in situ chlorophyll fluorometers: A global analysis of WET Labs ECO sensors , 2017 .

[16]  C. Lovejoy,et al.  Seasonal patterns in Arctic prasinophytes and inferred ecology of Bathycoccus unveiled in an Arctic winter metagenome , 2017, The ISME Journal.

[17]  Sarah Iams,et al.  The frequency and extent of sub-ice phytoplankton blooms in the Arctic Ocean , 2017, Science Advances.

[18]  Hanna M. Kauko,et al.  Leads in Arctic pack ice enable early phytoplankton blooms below snow-covered sea ice , 2017, Scientific Reports.

[19]  David A. Siegel,et al.  Revaluating ocean warming impacts on global phytoplankton , 2016 .

[20]  A. Sterl,et al.  Fifteen years of ocean observations with the global Argo array , 2016 .

[21]  M. Gosselin,et al.  Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms , 2015 .

[22]  K. Last,et al.  Unexpected Levels of Biological Activity during the Polar Night Offer New Perspectives on a Warming Arctic , 2015, Current Biology.

[23]  K. Last,et al.  Is Ambient Light during the High Arctic Polar Night Sufficient to Act as a Visual Cue for Zooplankton? , 2015, PloS one.

[24]  R. Woodgate,et al.  Seasonal and interannual variability of pan-Arctic surface mixed layer properties from 1979 to 2012 from hydrographic data, and the dominance of stratification for multiyear mixed layer depth shoaling , 2015 .

[25]  L. Fortier,et al.  Temperature, food and the seasonal vertical migration of key arctic copepods in the thermally stratified Amundsen Gulf (Beaufort Sea, Arctic Ocean) , 2014 .

[26]  Kate E. Lowry,et al.  Phytoplankton blooms beneath the sea ice in the Chukchi sea , 2014 .

[27]  D. Barber,et al.  Role of environmental factors on phytoplankton bloom initiation under landfast sea ice in Resolute Passage, Canada , 2014 .

[28]  E. Boss,et al.  Resurrecting the ecological underpinnings of ocean plankton blooms. , 2014, Annual review of marine science.

[29]  Josefino C. Comiso,et al.  Large Decadal Decline of the Arctic Multiyear Ice Cover , 2012 .

[30]  Paul Wassmann,et al.  Arctic marine ecosystems in an era of rapid climate change , 2011 .

[31]  J. Thepaut,et al.  The ERA‐Interim reanalysis: configuration and performance of the data assimilation system , 2011 .

[32]  Michael J. Behrenfeld,et al.  In situ evaluation of the initiation of the North Atlantic phytoplankton bloom , 2010 .

[33]  M. Fukuchi,et al.  Attenuation of the vertical flux of copepod fecal pellets under Arctic sea ice: evidence for an active detrital food web in winter , 2009, Polar Biology.

[34]  P. Mayzaud,et al.  Lipids and life strategy of Arctic Calanus , 2009 .

[35]  L. Kaleschke,et al.  Sea ice remote sensing using AMSR‐E 89‐GHz channels , 2008 .

[36]  Olaf Boebel,et al.  A Profiling Float’s Sense of Ice , 2007 .

[37]  D. Caron,et al.  Does low temperature constrain the growth rates of heterotrophic protists? Evidence and implications for algal blooms in cold waters , 2007 .

[38]  P. Ekstrom,et al.  Error measures for template-fit geolocation based on light , 2007 .

[39]  C. Pedrós-Alió,et al.  DISTRIBUTION, PHYLOGENY, AND GROWTH OF COLD‐ADAPTED PICOPRASINOPHYTES IN ARCTIC SEAS 1 , 2007 .

[40]  K. Hobson,et al.  Trophic structure and pathways of biogenic carbon flow in the eastern North Water Polynya , 2006 .

[41]  Michael J. Behrenfeld,et al.  Beam attenuation and chlorophyll concentration as alternative optical indices of phytoplankton biomass , 2006 .

[42]  David G. Barber,et al.  Variability of snow and ice thermal, physical and optical properties pertinent to sea ice algae biomass during spring , 2005 .

[43]  Jeffrey R. Key,et al.  Arctic Surface, Cloud, and Radiation Properties Based on the AVHRR Polar Pathfinder Dataset. Part II: Recent Trends , 2005 .

[44]  Daniele Iudicone,et al.  Mixed layer depth over the global ocean: An examination of profile data and a profile-based climatology , 2004 .

[45]  B. Petrie,et al.  The circulation, water masses and sea-ice of Baffin Bay , 2004 .

[46]  R. Bidigare,et al.  Light driven seasonal patterns of chlorophyll and nitrate in the lower euphotic zone of the North Pacific Subtropical Gyre , 2004 .

[47]  Philip A. Ekstrom,et al.  Blue twilight in a simple atmosphere , 2002, SPIE Optics + Photonics.

[48]  L. Legendre,et al.  Climatic and biological forcing of the vertical flux of biogenic particles under seasonal Arctic sea ice , 2002 .

[49]  A. Bricaud,et al.  Modeling the inherent optical properties of the ocean based on the detailed composition of the planktonic community. , 2001, Applied optics.

[50]  S. Strom,et al.  Phytoplankton blooms are strongly impacted by microzooplankton grazing in coastal North Pacific waters , 2001 .

[51]  J. Raven,et al.  Put out the light, and then put out the light , 2000, Journal of the Marine Biological Association of the United Kingdom.

[52]  M. Gregg,et al.  Surface mixed and mixing layer depths , 1995 .

[53]  A. Morel.  Optical modeling of the upper ocean in relation to its biogenous matter content (case I waters) , 1988 .

[54]  P. Goodwin.  Put out the light, and then put out the light. , 1968, Nursing times.

[55]  Gauthier Verin.  Propriétés physiques et optiques du manteau neigeux sur la banquise en arctique en période de fonte , 2019 .

[56]  K. Fennel,et al.  Taking the Ocean’s Pulse: A Vision for the Canadian Biogeochemical Argo Program , 2017 .

[57]  Ruediger Stein,et al.  The organic carbon cycle in the Arctic Ocean , 2004 .

[58]  E. Sakshaug.  Primary and Secondary Production in the Arctic Seas , 2004 .

[59]  A. Fine.  Recent trends. , 2003, Managed care quarterly.

[60]  J. Shaw.  Atmospheric radiation measurements and applications in climate : 10-11 July 2002, Seattle, USA , 2002 .

[61]  V. Smetácek,et al.  The possible role of the cyclopoid copepod Oithona in retarding vertical flux of zooplankton faecal material , 1994 .

[62]  B. Frost.  A modelling study of processes regulating plankton standing stock and production in the open Subarctic Pacific Ocean , 1993 .

[63]  André Morel,et al.  Light and marine photosynthesis: a spectral model with geochemical and climatological implications , 1991 .

[64]  G. Cota,et al.  Physical control of arctic ice algal production , 1989 .

[65]  Annick Bricaud,et al.  Optical properties of diverse phytoplanktonic species: experimental results and theoretical interpretation , 1988 .

[66]  J. Smith,et al.  A Small Volume, Short-Incubation-Time Method for Measurement of Photosynthesis as a Function of Incident Irradiance , 1983 .