Smallest Algae Thrive As the Arctic Ocean Freshens

  title={Smallest Algae Thrive As the Arctic Ocean Freshens},
  author={William K. W. Li and Fiona A. McLaughlin and Connie Lovejoy and Eddy C. Carmack},
  pages={539 - 539}
In the Arctic Ocean, phytoplankton cell sizes have decreased with warming temperatures and fresher surface waters. As climate changes and the upper Arctic Ocean receives more heat and fresh water, it becomes more difficult for mixing processes to deliver nutrients from depth to the surface for phytoplankton growth. Competitive advantage will presumably accrue to small cells because they are more effective in acquiring nutrients and less susceptible to gravitational settling than large cells… 

Temperature and phytoplankton cell size regulate carbon uptake and carbon overconsumption in the ocean

Abstract. Phytoplankton plays a critical role in the uptake of atmospheric carbon dioxide by the ocean, and is comprised of a spectrum of cell sizes that are strongly associated with different

Climate change tweaks Arctic marine ecosystems

  • M. Babin
  • Environmental Science
  • 2020
Observations of recent biomass buildup at the AO surface that is likely driven by hydrodynamical processes that replenish essential nitrogen fuel confirm that additional inputs of nitrogen would be required to enable the algae to take full advantage of greater availability of light.

Freshening leads to a three-decade trend of declining nutrients in the western Arctic Ocean

Rapid warming and sea-ice loss in the Arctic Ocean are among the most profound climatic changes to have occurred in recent decades on Earth. Arctic Ocean biological production appears that it may be

Small phytoplankton in Arctic seas: vulnerability to climate change

The study of microalgae in the Arctic spans more than a century, but it has been biased towards larger cells (>20 µm) including ice algae, despite the fact that standing stocks and primary production

Composition of algal pigments in surface freshen layer after ice melt in the central Arctic

Seasonal meltwater input creates a thin freshen layer in surface seawater under ice, which largely shifts the algae assemblages. Our recent observation of photosynthetic pigments in the high Arctic

Oceanographic structure drives the assembly processes of microbial eukaryotic communities

Results imply that displacement of Pacific waters to greater depth and increased terrigenous input may act as a control on SCM development and result in lower net summer primary production with a more heterotroph dominated eukaryotic microbial community.

Response of a natural Antarctic phytoplankton assemblage to changes in temperature and salinity

Microbial eukaryotic distribution in a dynamic Beaufort Sea and the Arctic Ocean

When Pacific Waters enter the Arctic Ocean, there is an abrupt change from temperature to salinity stratification of the upper water column. This change coincides with a faunal change as Pacific and

Nitrogen Limitation of the Summer Phytoplankton and Heterotrophic Prokaryote Communities in the Chukchi Sea

Major changes to Arctic marine ecosystems have resulted in longer growing seasons with increased phytoplankton production over larger areas. In the Chukchi Sea, the high productivity fuels intense



Impact of a shrinking Arctic ice cover on marine primary production

Loss of Arctic sea ice has accelerated recently, culminating in a 2007 summer minimum ice extent that was 23% below the previous low. To quantify the impact of this unprecedented loss of ice on

Late summer phytoplankton distribution along a 3500 km transect in Canadian Arctic waters: strong numerical dominance by picoeukaryotes

Results confirm that picophytoplankton can dominate not only in warm oligo- trophic waters, but also in a perennially cold ocean during late summer.

Global warming benefits the small in aquatic ecosystems

This study provides evidence that reduced body size is the third universal ecological response to global warming in aquatic systems besides the shift of species ranges toward higher altitudes and latitudes and the seasonal shifts in life cycle events.

Influence of Climate Change on the Changing Arctic and Sub-Arctic Conditions

The current warming trends in the Arctic may shove the Arctic system into a seasonally ice-free state not seen for more than one million years. The melting is accelerating, and researchers were


The Arctic Micromonas differed from genotypes elsewhere in the World Ocean, implying that the Arctic Basin is a marine microbial province containing endemic species, consistent with the biogeography of its macroorganisms.

Vertical distribution of phytoplankton communities in open ocean: An assessment based on surface chlorophyll

[1] The present study examines the potential of using the near-surface chlorophyll a concentration ([Chla]surf), as it can be derived from ocean color observation, to infer the column-integrated

Surface freshening of the Canada Basin, 2003–2007: River runoff versus sea ice meltwater

[1] The extent of summer Arctic sea ice has reduced dramatically in recent years and, simultaneously, we have observed surface freshening over the Canada Basin in 2006 and 2007. In order to identify

Wind‐driven shelf/basin exchange on an Arctic shelf: The joint roles of ice cover extent and shelf‐break bathymetry

The efficiency of shelf/basin exchange (SBE) in polar regions during summer is strongly moderated by the location of the ice edge relative to underlying topography. Numerical model calculations

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