Biology Stack Exchange
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Questions tagged [algae]

Algae is an informal term for a large, diverse group of photosynthetic eukaryotic organisms that are not necessarily closely related, and is thus polyphyletic.

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What's this stuff that looks like white chainmail armor growing on giant kelp?

I found some giant kelp coated with a material that is white, smooth, and forms a chain-mail pattern with small black oblong lumps in between the links. It feels pretty hard but not stiff (the kelp still flexes), and can't be easily removed from the…
Robert
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In lichen, do the fungi consume the oxygen produced by algae?

Is the oxygen produced by algae in photosynthesis consumed by the fungi, specifically in marine lichens where oxygen is less abundant? I am wondering this because of a speculative evolution project.
katzenklavier
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What kind of lichen is it (no. 2)?

I think i found very interesting lichen. I discoved it at 1.15 PM CET in Prague nature conservation area called Divoka Sarka. I took this picture on the place of my discovery. One piece of this specious had cca. 6 cm. And it look like a shrub. And…
L.Diago
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Where can I find a compendium of microorganisms?

I recently bought a microscope hoping to learn more about algae and bacteria and stuff. I've collected a few samples of pond water and found tons of algae and stuff, but I have no idea what to call the things I have found. I am wondering if there is…
Lane_01
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Are there any eukaryotic algae that degrade EDTA?

EDTA is a frequently-used chelator in molecular biology experiments and medical applications. Buchelia-Witschel et al 2001 discuss certain bacteria have monooxygenases that are capable of degrading EDTA, so there is a basic precedent that living…
Galen
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Multiple fission and spore formation

I came across this question today. In the B diagram, zoospores of chlamydomonas is given. Now my doubt is, are the zoospores formed by multiple fission or spore formation? If it is by spore formation, isn't spore formation and multiple fission the…
R. Anusha
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Volvox Cellular Reintegration

A couple of days ago, I answered this question over on worldbuilding.SE with some information about volvoxes, and commenter Liam Proven pointed out that one of the claims I made was dubious. I had first read about the volvox in a book that described…
p.s.w.g
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How to grow a spirulina biofilm on a carbon/graphite cylindrical cathode?

I am trying to grow a spirulina biofilm on my cathode for a fuel cell but it doesn't seem to be sticking to the cathode. I have a culture of spirulina and I've submerged a few cathodes in it to try and develop a biofilm. This is not working. Is…
Evan
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Taxonomy problems on algae: Is Cryptophyta a Phylum or a Class rank?

I am currently interested in algae taxonomy (I am not an expert in the field). I retrieved the taxonomy of my sequences with their NCBI access number via the taxonkit software (https://bioinf.shenwei.me/taxonkit/usage/). I noticed that I get…
Tof
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Can Thraustochytrids such as Schizochytrium do photosynthesis?

I know they belong to the phylum of heterokonts and that they are being heterotrophically grown on an industrial scale but I can't seem to find any reference to them being grown photoautotrophically. People call them marine algae yet there is no…
mimat
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Is it possible to use microalgae to produce food and live on it?

I know microalgae have not less protein and starch, grow quickly, require less. So, is it possible to use them for producing food (replace rice and wheat) and live on it? Currently, I only saw people eat it as an extra-nutrition.
jyf1987
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Identification of Ulva lactuca

I am trying to find an ID guide that I can use to identify macroalgae. I specifically want to differentiate between Ulva species.
Lewis123
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What are these black masses floating on my pool?

I've been cleaning them for some time. At first I thought it was some kind of synthetic material, but when I took one with my fingers it disintegrated into filaments. I placed another under my usb microscope and they appear to be an aggregate of…
MarioZ
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Floats of Algae, a house-made conjecture

Background In North of Scotland there are many seaweed types. One is a green algae (chlorophyta). They are full of 'bubbles'. According to web searches one of those bubbles (there are two types you can notice by sight) are spores; the other ones…
mister nobody
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What is "beto carotene" and how can it turn lakes pink?

The BBC News article Pink lake in Australia attracts and delights tourists describes an artificial salt lake in Westgate Park, Melbourne, Australia that tuns pink around February and then in "late Autumn, until cooler temperatures restore it back to…
uhoh
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