The effect of irradiance on long-term skeletal growth and net photosynthesis in Galaxea fascicularis under four light conditions

Schutter, Miriam; Velthoven, Bas van; Janse, Max; Osinga, Ronald; Janssen, Marcel; Wijffels, René H.; Verreth, J.A.J.

doi:10.1016/j.jembe.2008.08.014

Cited by 43 publications

(55 citation statements)

References 27 publications

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“…Indeed, a positive correlation between photon flux density (PFD) and growth was found in this experiment (Schutter et al, 2008; Figure 4A). In a comparable experiment, that was designed to study effects of length of day on growth of G. fascicularis, no differences between treatments (both different lengths of day and different PFDs) were found (Schutter et al, 2011b; Figure 4B).…”

Section: Lightsupporting

confidence: 65%

The CORALZOO project: a synopsis of four years of public aquarium science

et al. 2012

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In order to improve the methodology for growing and maintaining corals in captivity, a consortium of European zoos, aquaria and academia executed a four-year public/private collaborative research and innovation project (CORALZOO) on the breeding and husbandry of stony corals. CORALZOO comprised the following topics: (1) sexual and asexual breeding of corals in captivity, including techniques for propagation, feeding and induction of natural coral colony morphogenesis; and (2) coral husbandry: development of generic bioassays to evaluate biotic and abiotic husbandry parameters and to monitor coral health, elaboration of methods for identification and treatment of coral diseases and optimization of transport and acclimation procedures. The results of this project are reviewed.

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Section: Lightsupporting

confidence: 65%

The CORALZOO project: a synopsis of four years of public aquarium science

et al. 2012

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“…The effects of full spectrum light have been widely reported for coral reef and seagrass areas [17,68,69], showing higher productivity and health with better illumination conditions. Light availability decreases with water depth in coral reefs of Florida [63], with a marked reduction in daily doses of solar radiation from 2 to 24 m depth.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Available Light for Seagrass and Patch Reef Productivity in Sugarloaf Key, Lower Florida Keys

et al. 2016

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Light availability is an important factor driving primary productivity in benthic ecosystems, but in situ and remote sensing measurements of light quality are limited for coral reefs and seagrass beds. We evaluated the productivity responses of a patch reef and a seagrass site in the Lower Florida Keys to ambient light availability and spectral quality. In situ optical properties were characterized utilizing moored and water column bio-optical and hydrographic measurements. Net ecosystem productivity (NEP) was also estimated for these study sites using benthic productivity chambers. Our results show higher spectral light attenuation and absorption, and lower irradiance during low tide in the patch reef, tracking the influx of materials from shallower coastal areas. In contrast, the intrusion of clearer surface Atlantic Ocean water caused lower values of spectral attenuation and absorption, and higher irradiance in the patch reef during high tide. Storms during the studied period, with winds >10 m¨s´1, caused higher spectral attenuation values. A spatial gradient of NEP was observed, from high productivity in the shallow seagrass area, to lower productivity in deeper patch reefs. The highest daytime NEP was observed in the seagrass, with values of almost 0.4 g¨O 2¨m´2¨h´1 . Productivity at the patch reef area was lower in May than during October 2012 (mean = 0.137 and 0.177 g¨O 2¨m´2¨h´1 , respectively). Higher photosynthetic active radiation (PAR) levels measured above water and lower light attenuation in the red region of the visible spectrum (~666 to~699 nm) had a positive correlation with NEP. Our results indicate that changes in light availability and quality by suspended or resuspended particles limit benthic productivity in the Florida Keys.

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“…Rates of P n and R d were determined in 1500 cm 3 Perspex cylindrical incubation chambers using an oxygen evolution technique as described in Schutter et al (2008). Temperature in the chambers was maintained at 26°C by pumping freshwater of 26.5-27°C (maintained with a TC20 Aquarium Cooler, Teco, Ravenna, Italy) through a water jacket surrounding the cylindrical chamber.…”

Section: Experimental Design Water Chemistry and Metabolic Measurementsmentioning

confidence: 99%

“…To avoid light limitation effects, P n was measured at an E of 500 µmol quanta m −2 s −1 , which is considered to be saturating for this clone of G. fascicularis (Schutter et al, 2008). Aquablue Spezial T5 fluorescent bulbs (ATI, Hamm, Germany) were used to ensure a good light spectrum.…”

Section: Experimental Design Water Chemistry and Metabolic Measurementsmentioning

confidence: 99%

Interactive effects of oxygen, carbon dioxide and flow on photosynthesis and respiration in the scleractinian coral Galaxea fascicularis

Osinga

Derksen‐Hooijberg

Wijgerde

et al. 2017

Journal of Experimental Biology

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Rates of dark respiration and net photosynthesis were measured for six replicate clonal fragments of the stony coral Galaxea fascicularis (Linnaeus 1767), which were incubated under 12 different combinations of dissolved oxygen (20%, 100% and 150% saturation), dissolved carbon dioxide (9.5 and 19.1 µmol l −1 ) and water flow (1-1.6 versus 4-13 cm s) in a repeated measures design. Dark respiration was enhanced by increased flow and increased oxygen saturation in an interactive way, which relates to improved oxygen influx into the coral tissue. Oxygen saturation did not influence net photosynthesis: neither hypoxia nor hyperoxia affected net photosynthesis, irrespective of flow and pH, which suggests that hyperoxia does not induce high rates of photorespiration in this coral. Flow and pH had a synergistic effect on net photosynthesis: at high flow, a decrease in pH stimulated net photosynthesis by 14%. These results indicate that for this individual of G. fascicularis, increased uptake of carbon dioxide rather than increased efflux of oxygen explains the beneficial effect of water flow on photosynthesis. Rates of net photosynthesis measured in this study are among the highest ever recorded for scleractinian corals and confirm a strong scope for growth.

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The effect of irradiance on long-term skeletal growth and net photosynthesis in Galaxea fascicularis under four light conditions

Cited by 43 publications

References 27 publications

The CORALZOO project: a synopsis of four years of public aquarium science

The CORALZOO project: a synopsis of four years of public aquarium science

Characterization of Available Light for Seagrass and Patch Reef Productivity in Sugarloaf Key, Lower Florida Keys

Interactive effects of oxygen, carbon dioxide and flow on photosynthesis and respiration in the scleractinian coral Galaxea fascicularis

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