Data on calcification rate of coral and crustose coralline algae were used to test the proton flux model of calcification. There was a significant correlation between calcification (G) and the ratio of dissolved inorganic carbon (DIC) to proton concentration ([DIC] : [H(+)] ratio). The ratio is tightly correlated with [CO3(2-)] and with aragonite saturation state (Ωa). An argument is presented ...

What I intended for this part was simply inspection of pairwise scatterplots and correlation coefficients. (Three-dimensional exploration — 3-D plots, or 2-D scatterplots with panels for different ranges of a third variable — might also be useful, but was more than I expected and in any event my limited exploration of these didn’t reveal anything noteworthy.) Because many of the variables have ...

Extreme climate events produce simultaneous changes to the mean and to the variance of climatic variables over ecological time scales. While several studies have investigated how ecological systems respond to changes in mean values of climate variables, the combined effects of mean and variance are poorly understood. We examined the response of low-shore assemblages of algae and invertebrates o...

Coralline algae form abundant and ecologically important submerged aquatic vegetation habitats throughout the world. However, algal performance is threatened by climate change ocean acidification. Previous studies suggest that their photosynthetic will be compromised mainly at elevated temperatures. Understanding impact of diverse scenarios requires a clear thorough comprehension response to te...

Abstract In Kongsfjorden (Spitsbergen), we quantified the zonation of visually dominant macroalgal taxa and detached macroalgae from underwater videos taken in summer 2009 at six transects between 2 138 m water depth. For first time, provide information on occurrence deep red algae below kelp forest depth > 30 m. The presence distribution were especially pronounced outer fjord, decreased wit...

1. Blue-green algae, red algae, and purple bacteria all show the emission of delayed light. 2. The action spectra for the production of delayed light by three species of blue-green algae have one broad band with a peak at 620 mmicro. 3. The action spectrum for production of delayed light by the red algae has one peak at 550 mmicro with a shoulder from 600 to 660 mmicro. 4. The emission spectra ...