Talk:Microalgae

Algae Mid‑importance

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Marine life (inactive)

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Microbiology Low‑importance

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Limnology and Oceanography Mid‑importance

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Disputed

I am not sure that "they are generally more efficient converters of solar energy because of their simple cellular structure" is true; this needs a source. More complex organisms have greater potential for regulation, and thus could potentially be more efficient.

In addition, cells living in water have less access to carbon dioxide, which is not particularly soluble in water. Pcu123456789 05:21, 29 January 2007 (UTC)[reply]

"While the mechanism of photosynthesis in microalgae is similar to that of other plants, they are generally more efficient converters of solar energy because of their simple cellular structure." [1] (Page 3) Confuzzle 10:22, 29 May 2007 (UTC)[reply]

I believe the single celled microalgae can be among the most productive bio-fuel organisms, by factors ranging from 10 to as much as 1,000 fold, compared to traditional agricultural crops: [http://www.oakhavenpc.org/cultivating_algae.htm Cultivating Algae for Liquid Fuel Production]

Gallons of Oil per Acre per Year
Corn	18
Soybeans	48
Safflower	83
Sunflower	102
Rapeseed	127
Oil Palm	635
Micro Algae	5000-15000

According to: Aquatic Chemistry, CO2 is about 1,000 times as soluable in water as Oxygen or Nitrogen. However, that is only actually achievable when tested at 1 Atm of the same gas - but CO2 is only ~ .04% of ambient air (partial pressure). In addition, CO2 can, apparently, be carried and available in water, attached to numerous "helpers", such as Calcium. --Nekote 01:28, 2 February 2007 (UTC)[reply]

Thus there is probably less CO₂ in water than air. I don't think that the comparison with leafy plants, which require space, is valid. —The preceding unsigned comment was added by Pcu123456789 (talk • contribs) 06:04, 4 February 2007 (UTC).[reply]

It might be worth noting that oxygen is inhibiting to photosynthesis, and, if CO2 is more soluble in water than O2, then aquatic environments might be more favorable for PS than atmosphaeric onces.

Also potentially worth noting in this debate is the fact that even in nonaquatic plants, the CO2 has to pass into water in the plant's cells in order to be utilized. -DF- March 19th 2007

"The solar utilization efficiency of some microalgae is ~ 5%, as compared to ~ 0.2% for typical land based plants." "Aquatic microalgae have been identified as fast growing species whose carbon fixing rates are higher than those of land-based plants by one order of magnitude." At 21 degrees Celcius O2 is 8.9 g/m3 soluble in H20 vs.

                     CO2 is 1.45 kg/m3 soluble in H20

Therefore; CO2 is much more soluble in water by almost three orders of magnitude! So I am not sure if the first dispute is valid. Sept 2007 129.72.66.120 16:17, 26 September 2007 (UTC)FRBurns "Capture and Sequestration of CO2 From Stationary Combustion Systems by Photosynthesis of Microalgae" Takashi Nakamura, et al.[reply]

Move discussion in progress

There is a move discussion in progress on Talk:Microphyte which affects this page. Please participate on that page and not in this talk page section. Thank you. —RMCD bot 08:30, 23 October 2017 (UTC)[reply]

Content to do

Suggestion for content, Are micro algae a certain classification of algae or do they exist across classifications red blue green ect?

Spirulina: Algae or bacteria?

Is displaying a picture of spirulina correct? I thought that spirulina is a cyanobacteria, not an algae. — Preceding unsigned comment added by 212.147.33.106 (talk) 15:48, 13 January 2014 (UTC)[reply]

Algae is not monophyletic, it includes basically anything that photosynthesizes and is not a plant. Nessie (talk) 14:42, 21 September 2018 (UTC)[reply]

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What does the name Micro mean in this case? They are only visible with a Microscope?

--ee1518 (talk) 11:05, 2 March 2019 (UTC)[reply]