Primary production, respiration and calcification of the temperate free-living coralline alga Lithothamnion corallioides

Martin, Sophie; Castets, Marie-Dorothée; Clavier, Jacques

doi:10.1016/j.aquabot.2006.02.005

Cited by 96 publications

(164 citation statements)

References 25 publications

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“…However, the dark calcification rates found here during the night, after a long period of exposure to darkness (G D ), remained high (0.06 µmol CaCO 3 cm −2 thallus h −1 ). The strong relationship between calcification and irradiance (G-E curves) found in Lithophyllum cabiochae is consistent with those previously reported for other species of coralline algae (Chisholm, 2000;Martin et al, 2006Martin et al, , 2007. The G-E curves followed the same trend as the P-E curves, reinforcing the hypothesis that calcification and photosynthetic processes are tightly linked (Pentecost, 1978).…”

Section: Calcificationsupporting

confidence: 89%

“…Accordingly, normalization of our metabolic data by surface area explained more variability than normalization by biomass. Respiration rate expressed per unit of biomass for L. cabiochae (R d of 0.8 µmol O 2 g −1 dry wt thallus h −1 or 0.7 µmol C g −1 h −1 ) is, however, consistent with those reported for temperate species of coralline algae, such as the free-living coralline alga (maerl), Lithothamnion corallioides (0.1-0.3 µmol O 2 or C g −1 dry wt h −1 : Martin et al, 2006). Dark respiration (non-photorespiratory mitochondrial respiration) occurs both in the light and in darkness and is essential for maintenance as well as growth of cells, since it generates much of the usable energy (ATP), reducing power (e.g.…”

Section: Respirationsupporting

confidence: 88%

“…Coralline algae in coralligenous communities, however, are one of the major carbon producers in the Mediterranean Sea, with gross primary production (40 mmol C m −2 coralligen d Chisholm, 2000). This rate (14 µmol CaCO 3 g −1 dry wt d −1 ) is even higher than the maximal rate (10 µmol CaCO 3 g −1 dry wt d −1 ) reported for the temperate maerl species Lithothamnion corallioides at 1 m depth in summer (Martin et al, 2006). In the coralligenous communities, the coralline algal carbonate deposition rate reached 23 mmol CaCO 3 m −2 d −1 (2.3 g CaCO 3 m −2 d −1 ).…”

Section: Diel C and Caco 3 Budgetsmentioning

confidence: 83%

“…; Martin et al, 2006) and tropical species (Chisholm, 2003; Table 4). Payri et al (2001) reported E k values for Hydrolithon onkodes of 110 µmol photons m −2 s −1 for specimens exposed to high light (1600 µmol photons m −2 s −1 ), reduced to 27 µmol photons m −2 s −1 for specimens exposed to lower light levels (< 200 µmol photons m −2 s −1 ).…”

Section: Photosynthesismentioning

confidence: 99%

“…They produce chemicals or harbour specific bacteria that promote larval settlement and recruitment of numerous invertebrates (Morse et al, 1980;Morse & Morse, 1984;Johnson et al, 1991) and their rigid structure provides microhabitats for a high diversity of associated organisms (Cabioch, 1969;Bosence, 1976Bosence, , 1979Foster, 2001). Coralline algae are also of significant importance in the carbon and carbonate cycles of shallow coastal ecosystems, being major contributors to CO 2 fluxes through high community photosynthesis (CO 2 sink) and respiration (CO 2 source) (Martin et al, 2005(Martin et al, , 2006(Martin et al, , 2007 and through high CaCO 3 production (CO 2 source) and dissolution (CO 2 sink) (Barrόn et al, 2006;Martin et al, 2006Martin et al, , 2007.…”

Section: Introductionmentioning

confidence: 99%

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Photosynthesis, respiration and calcification in the Mediterranean crustose coralline algaLithophyllum cabiochae(Corallinales, Rhodophyta)

Martin

Charnoz

Gattuso

2013

European Journal of Phycology

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Primary production and calcification responses to irradiance were investigated in Lithophyllum cabiochae, a crustose coralline alga from Mediterranean coralligenous communities, collected at c. 25 m depth in the Bay of Villefranche. Algae were maintained in aquaria at temperature and irradiance levels close to in situ conditions. Physiological measurements were performed using incubation chambers in the dark and in the light at different irradiance levels within the range of those measured in situ. Both photosynthesis and calcification rates in L. cabiochae were strongly related to irradiance. Dark respiration averaged 0.2-0.3 µmol cm −2 thallus h −1 in terms of both O 2 consumption and CO 2 release and maximal gross photosynthesis averaged 1.0 µmol cm −2 h −1 in terms of both O 2 production and CO 2 uptake. Mean rate of net calcification was 0.1 µmol CaCO 3 cm −2 h −1 in the dark and reached 0.4 µmol CaCO 3 cm −2 h −1 in the light. Diel net and gross organic C productions were estimated to be 3 and 7 µmol C cm −2 thallus d −1, respectively. Diel net inorganic C production was estimated to be 3 µmol CaCO 3 cm −2 thallus d −1. Despite the low light conditions experienced by the algae at c. 25 m depth, L. cabiochae can be considered as a major contributor to primary productivity and calcium carbonate deposition, making coralligenous communities a major carbon and carbonate producer in the Mediterranean Sea.

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Section: Calcificationsupporting

confidence: 89%

Section: Respirationsupporting

confidence: 88%

Section: Diel C and Caco 3 Budgetsmentioning

confidence: 83%

Section: Photosynthesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photosynthesis, respiration and calcification in the Mediterranean crustose coralline algaLithophyllum cabiochae(Corallinales, Rhodophyta)

Martin

Charnoz

Gattuso

2013

European Journal of Phycology

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One‐year experiment on the physiological response of the Mediterranean crustose coralline alga, Lithophyllum cabiochae, to elevated pCO₂ and temperature

Martin

Cohu

Vignot

et al. 2013

Ecology and Evolution

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126

131

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The response of respiration, photosynthesis, and calcification to elevated pCO2 and temperature was investigated in isolation and in combination in the Mediterranean crustose coralline alga Lithophyllum cabiochae. Algae were maintained in aquaria during 1 year at near-ambient conditions of irradiance, at ambient or elevated temperature (+3°C), and at ambient (ca. 400 μatm) or elevated pCO2 (ca. 700 μatm). Respiration, photosynthesis, and net calcification showed a strong seasonal pattern following the seasonal variations of temperature and irradiance, with higher rates in summer than in winter. Respiration was unaffected by pCO2 but showed a general trend of increase at elevated temperature at all seasons, except in summer under elevated pCO2. Conversely, photosynthesis was strongly affected by pCO2 with a decline under elevated pCO2 in summer, autumn, and winter. In particular, photosynthetic efficiency was reduced under elevated pCO2. Net calcification showed different responses depending on the season. In summer, net calcification increased with rising temperature under ambient pCO2 but decreased with rising temperature under elevated pCO2. Surprisingly, the highest rates in summer were found under elevated pCO2 and ambient temperature. In autumn, winter, and spring, net calcification exhibited a positive or no response at elevated temperature but was unaffected by pCO2. The rate of calcification of L. cabiochae was thus maintained or even enhanced under increased pCO2. However, there is likely a trade-off with other physiological processes. For example, photosynthesis declines in response to increased pCO2 under ambient irradiance. The present study reports only on the physiological response of healthy specimens to ocean warming and acidification, however, these environmental changes may affect the vulnerability of coralline algae to other stresses such as pathogens and necroses that can cause major dissolution, which would have critical consequence for the sustainability of coralligenous habitats and the budgets of carbon and calcium carbonate in coastal Mediterranean ecosystems.

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Combined effects of global climate change and nutrient enrichment on the physiology of three temperate maerl species

Qui-Minet

Coudret

Davoult

et al. 2019

Ecology and Evolution

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Made up of calcareous coralline algae, maerl beds play a major role as ecosystem engineers in coastal areas throughout the world. They undergo strong anthropogenic pressures, which may threaten their survival. The aim of this study was to gain insight into the future of maerl beds in the context of global and local changes. We examined the effects of rising temperatures (+3°C) and ocean acidification (−0.3 pH units) according to temperature and pH projections (i.e., the RCP 8.5 scenario), and nutrient (N and P) availability on three temperate maerl species (Lithothamnion corallioides, Phymatolithon calcareum, and Lithophyllum incrustans) in the laboratory in winter and summer conditions. Physiological rates of primary production, respiration, and calcification were measured on all three species in each treatment and season. The physiological response of maerl to global climate change was species‐specific and influenced by seawater nutrient concentrations. Future temperature–pH scenario enhanced maximal gross primary production rates in P. calcareum in winter and in L. corallioides in both seasons. Nevertheless, both species suffered an impairment of light harvesting and photoprotective mechanisms in winter. Calcification rates at ambient light intensity were negatively affected by the future temperature–pH scenario in winter, with net dissolution observed in the dark in L. corallioides and P. calcareum under low nutrient concentrations. Nutrient enrichment avoided dissolution under future scenarios in winter and had a positive effect on L. incrustans calcification rate in the dark in summer. In winter conditions, maximal calcification rates were enhanced by the future temperature–pH scenario on the three species, but P. calcareum suffered inhibition at high irradiances. In summer conditions, the maximal calcification rate dropped in L. corallioides under the future global climate change scenario, with a potential negative impact on CaCO3 budget for maerl beds in the Bay of Brest where this species is dominant. Our results highlight how local changes in nutrient availability or irradiance levels impact the response of maerl species to global climate change and thus point out how it is important to consider other abiotic parameters in order to develop management policies capable to increase the resilience of maerl beds under the future global climate change scenario.

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Primary production, respiration and calcification of the temperate free-living coralline alga Lithothamnion corallioides

Cited by 96 publications

References 25 publications

Photosynthesis, respiration and calcification in the Mediterranean crustose coralline algaLithophyllum cabiochae(Corallinales, Rhodophyta)

Photosynthesis, respiration and calcification in the Mediterranean crustose coralline algaLithophyllum cabiochae(Corallinales, Rhodophyta)

One‐year experiment on the physiological response of the Mediterranean crustose coralline alga, Lithophyllum cabiochae, to elevated pCO₂ and temperature

Combined effects of global climate change and nutrient enrichment on the physiology of three temperate maerl species

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Primary production, respiration and calcification of the temperate free-living coralline alga Lithothamnion corallioides

Cited by 96 publications

References 25 publications

Photosynthesis, respiration and calcification in the Mediterranean crustose coralline algaLithophyllum cabiochae(Corallinales, Rhodophyta)

Photosynthesis, respiration and calcification in the Mediterranean crustose coralline algaLithophyllum cabiochae(Corallinales, Rhodophyta)

One‐year experiment on the physiological response of the Mediterranean crustose coralline alga, Lithophyllum cabiochae, to elevated pCO2 and temperature

Combined effects of global climate change and nutrient enrichment on the physiology of three temperate maerl species

Contact Info

Product

Resources

About

One‐year experiment on the physiological response of the Mediterranean crustose coralline alga, Lithophyllum cabiochae, to elevated pCO₂ and temperature