Macroalgae in the Biosphere 2 ocean. Sampling procedure Transect lines divided ocean into quadrats...
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![Page 1: Macroalgae in the Biosphere 2 ocean. Sampling procedure Transect lines divided ocean into quadrats One ring was dropped in a random location within.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649d645503460f94a47235/html5/thumbnails/1.jpg)
Macroalgae in the Biosphere 2 ocean
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Sampling procedure
• Transect lines divided ocean into quadrats
• One ring was dropped in a random location within each quadrat
• Algae within each ring was collected
• Algae was identified
• Algae was dried and weighed
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Amphiroa
Jania
Haliptilon
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Gelidiopsis
Chondrus
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Species List
RHODOPHYTAAcanthophora spiciferaAmphiroa fragilissimaAmphiroa rigidaBotryocladia pyriformis Chondria dasyphylla Flahaultia Gracilaria tikvahiaeGelidiopsis intricataHaliptilon cubense Halymenia duchassaingiiJania adhaerensMesophyllum mesomorphumPeyssonnelia Rhodogorgon carriebowensis Sporolithon
CHLOROPHYTACaulerpa serrulata Chaetomorpha sp. Dictyosphaeria cavernosaDictyosphaeria ocellata Enteromorpha sp.Ernodesmis verticillataHalimeda incrassataHalimeda tuna Rhipocephalus divericata Rhipocephalus phoenixValonia aegagropilaValonia macrophysaValonia utricularisVentricaria ventricosa
PHEOPHYTADictyota cervicornisDictyota divercataDictyota mertensiiDictyota pulchella Padina sp.
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Shannon-Weiner Diversity Indices
Oct 1999 0.55Nov 1999 0.58Dec 1999 0.55Jan 2000 0.51Feb 2000 0.45Mar 2000 0.42Jun 2000 0.47Sep 2000 0.43Nov 2000 0.52Jan 2001 0.66Mar 2001 0.64Aug 2001 0.59
Jan 2002 0.59Mar 2002 0.56May 2002 0.55Jul 2002 0.62Sep 2002 0.50Jan 2003 0.63Mar 2003 0.65June 2003 1.21Aug 2003 1.08Oct 2003 0.97
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Dominant species biomass
0500100015002000250030003500
Oct-99
Jan-00
Jun-00
Jan-01
Aug-01
May-02
Jan-03
3-Aug
sample date
bio
ma
ss
(g
) AF
CD
JA
GI
HC
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Total Biomass over time
0
1000
2000
3000
4000
5000
6000
Sample date
Bio
ma
ss (g
)
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Future analyses
• Correlations with environmental factors
• light• CO2• nutrients
• Comparisons with natural reef environments
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Photo references
• www.botany.hawaii.edu/ReefAlgae/ What%20plants• rmocfis.upr.clu.edu/~ballan/ haliptilon.html • www.coralreefnetwork.com/rhodophyta.html• www.ne.jp/asahi/marine/ algae/Chondria1.html• www.space.com/biosphere2_001110.html (bio2)• garion.tzo.com/lynn/ biosphere2.htm (bio2)• www.kynn.com/photos/2001/ 03/arizona/biosphere_2