Photosynthetic microalgae are an attractive source of food, fuel, or nutraceuticals, but commercial production of microalgae is limited by low spatial efficiency. In the present study we developed a simple photosynthetic hydrogel system that cultivates the green microalga, Marinichlorella kaistiae KAS603, together with a novel strain of the bacteria, Erythrobacter sp. We tested the performance of the co-culture in the hydrogel...

Stomata are essential for diffusive entry of gases to support photosynthesis, but may also expose internal leaf tissues to pathogens. To uncover trade‐offs in range‐wide adaptation relating to stomata, we investigated the underlying genetics of stomatal traits and linked variability in these traits with geoclimate, ecophysiology, condensed foliar tannins and pathogen susceptibility in black cottonwood ( P opulus trichocarpa )....

When different ages of juvenile allis shad Alosa alosa (18–74 days post‐fertilization) were exposed for 48 h to elevated salinity (25 or 30), all ages could tolerate moderates salinity (25) whereas only the older stages could tolerate the higher salinity. In 88 days post‐fertilization allis shad, acclimatation to full‐strength sea water for 2 weeks did not lead to significant changes in total water content and gill Na + /K + ‐...

Silicon isotope tracers were used to examine the relative magnitude of silica dissolution and silica production in the Monterey Bay, California, upwelling system. A diatom bloom dominated by Skeletonema costatum and Chaetoceros spp. was encountered under conditions of moderate upwelling. Profiles of silica production and dissolution rates were obtained at seven stations that sampled both inside and outside the bloom. Integrate...

Previous laboratory findings indicated that marine bacteria accelerate biogenic silica (bSiO 2 ) dissolution rates in the sea by degrading the organic coating surrounding diatom frustules and exposing the underlying silica to chemical attack by undersaturated seawater. We examined the effectiveness of bacterial activity in facilitating in situ bSiO 2 dissolution during a diatom bloom in Monterey Bay, California, following mode...

Bacteria (and possibly archaea) accelerate silica dissolution in the sea by colonizing and enzymatically degrading the organic matrix of diatom frustules. We tested whether colonizer species composition and ectohydrolase profiles critically control silicon regeneration by allowing diatom ( Thalassiosira weissflogii and Chaetoceros simplex ) detritus to be colonized by natural bacterial assemblages and 12 phylogenetically chara...