Brief description
Seasonal patterns in the in situ ecophysiology of the common habitat-forming seaweeds Ecklonia radiata, Phyllospora comosa, and Macrocystis pyrifera were investigated at different latitudes and depths in southeastern Australia. We used multiple performance indicators (photosynthetic characteristics, pigment content, chemical composition, stable isotopes, nucleic acids) to assess the ecophysiology of seaweeds near the northern and southern margins of their range, along a depth gradient (E. radiata only), over a two year period (September 2010 – August 2012).Lineage
Maintenance and Update Frequency: notPlanned• Rapid Light Curves (light- and dark-adapted) using PAM fluorometry in situ - parameters are derived from fitted RLCs using the double exponential decay model of Platt et al (1980)
• Pigment concentrations (chlorophyll a, c, and fucoxanthin) using HPLC and spectrophotometry)
• Tissue chemistry (%C, %N, C:N, stable isotopes δ13C and δ15N) using a thermo gas chromatograph and isotope radio mass spectrometer
• Nucleic acid characteristics (concentration of RNA and DNA, RNA:DNA) using a novel extraction technique developed specifically for brown macroalgae
Notes
CreditAustralian Research Council (ARC) grant DP1096573
To determine similarities and differences in the ecophysiology of temperate habitat-forming seaweeds across a depth and latitudinal gradient.
Data time period: 2010-09-27 to 2012-08-07
text: westlimit=147.9; southlimit=-43.25; eastlimit=148.05; northlimit=-43.10
text: westlimit=152.15977; southlimit=-32.75; eastlimit=152.35; northlimit=-32.55
text: uplimit=31; downlimit=4
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- DOI : 10.4226/77/57216BA85940C
- global : f5748c26-2fe9-47bd-b8bb-1e90c032de16