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Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
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Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
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Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
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Updated: Jul 11, 2026

Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
14:38

Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential

Published on: April 20, 2012

Mix and match: how climate selects phytoplankton.

Paul G Falkowski1, Matthew J Oliver

  • 1Institute for Marine and Coastal Sciences, Rutgers University, 71 Dudley Rd, New Brunswick, New Jersey 08901, USA. falko@marine.rutgers.edu

Nature Reviews. Microbiology
|September 15, 2007
PubMed
Summary

Climate shapes marine phytoplankton by controlling ocean mixing and nutrient availability. This research explains how temperature gradients influence these processes, impacting phytoplankton distribution and diversity.

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Published on: September 15, 2015

Area of Science:

  • Marine ecology
  • Oceanography
  • Paleoclimatology

Background:

  • Climate significantly impacts macroscopic life distribution but its effect on microbial communities, like phytoplankton, is less understood.
  • Phytoplankton are crucial primary producers in marine ecosystems, forming the base of the food web.

Purpose of the Study:

  • To investigate how climate selects for marine eukaryotic phytoplankton taxa.
  • To establish a framework for predicting future phytoplankton community changes.

Main Methods:

  • Review of resource competition theory.
  • Application of fundamental physical principles.
  • Analysis of the fossil record.

Main Results:

  • Climate establishes thermal gradients (equator-to-pole, continent-to-land).
  • These gradients drive wind-driven turbulent mixing in the upper ocean.
  • Ocean mixing controls nutrient fluxes, which dictate phytoplankton cell size and distribution.

Conclusions:

  • Climate-mediated physical processes are key drivers of phytoplankton community structure.
  • Understanding these links is essential for predicting future phytoplankton responses to climate change.