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<DIV><SPAN style="FONT-SIZE: 12px"><A href="mailto:Estimad@s"><FONT
color=#000080 size=4>Estimad@s</FONT></A><FONT color=#000080 size=4> </FONT><A
href="mailto:amig@s"><FONT color=#000080 size=4>amig@s</FONT></A><FONT
color=#000080 size=4>,</FONT></SPAN></DIV>
<DIV><FONT face=Verdana color=#000080 size=3><SPAN style="FONT-SIZE: 12px"><FONT
face="Times New Roman" size=4>Les reenvío un texto de Mike Guiry, que
tomé de la lista ALGAE-L (de donde proviene parte de la información que les
estoy mandando día a día) que podría interesarles</FONT></SPAN></FONT></DIV>
<DIV><FONT face=Verdana color=#000080 size=3><SPAN style="FONT-SIZE: 12px"><FONT
face="Times New Roman" size=4>AB</FONT></SPAN></FONT></DIV>
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<DIV><FONT face=Arial size=2><SPAN style="FONT-SIZE: 12px"><FONT
face=Verdana>Dear Colleagues<BR><BR>Somebody asked me to make some estimates of
macroalgal numbers and I thought that the list might be interested in the
answer. There are of course a<BR>number of conceptual difficulties: what's a
macroalgal; indeed, what's an alga? <BR><BR>Here are the current numbers
according to <B>Kingdom</B>: Phylum and </FONT><FONT
face=Verdana><I>Class<BR></I><BR><B>Chromista</B>: Ochrophyta
[<I>Phaeophyceae</I>: 1745; <I>Xanthophyceae </I>(<U>Vaucheria </U>and
<U>Bothrydium</U> only): 406]: 2151<BR><B>Plantae</B>: Rhodophyta: 5900 (not
including unicellular species)<BR><B>Plantae</B>: Charophyta [<I>Charophyceae
</I>282 and <U>Klebsormidium </U>42]: 324<BR><B>Plantae</B>: Chlorophyta
[<I>Bryopsidophyceae </I>501; <I>Ulvophyceae </I>887; <I>Trebouxiophyceae
</I>(Prasiolales only) 31; <I>Chlorophyceae </I>(Oedogoniales only):<BR>179]
1597<BR><BR>There are thus about 10,000 species of eukaryote macroalgae amongst
the 23,500 or so species of eukaryotes in AlgaeBase, of which 3,000 or
so<BR>belong in the kingdom <B>Protozoa </B>(dinoflagellates and euglenoids).
<BR><BR>To generalise, chromistan and green-plant-line algae number about 20,000
of which half are macroalgae. Of these 10,000 macroalgae about 8,700 are marine
and the remainder are freshwater and/or terrestrial. As a matter of interest,
the microalgae seem more even distributed: about half are marine and the other
half freshwater.<BR><BR>These numbers are from AlgaeBase, which is of course a
work in progress. The numbers for each taxon, or indeed any currently used
taxon, can be<BR>checked on:<BR><BR></FONT><A
href="http://www.algaebase.org/taxonomy.lasso"><FONT
face=Verdana>http://www.algaebase.org/taxonomy.lasso</FONT></A><BR><BR><FONT
face=Verdana>Best wishes<BR><BR>Mike<BR><BR>Professor M.D. Guiry<BR>Director,
Martin Ryan Institute<BR>NUI Galway, University Rd<BR>Galway,
Ireland<BR></FONT><A href="http://www.seaweed.ie/guiry"><FONT
face=Verdana>http://www.seaweed.ie/guiry</FONT></A></SPAN><FONT
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