The effect of ocean acidification on early algal colonization stages at natural CO2 vents

Porzio, Lucia; Garrard, Samantha L.; Buia, María Cristina

doi:10.1007/s00227-013-2251-3

Cited by 42 publications

(34 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To date, a vast majority of studies are laboratory-based perturbation experiments (e.g., 90 % of the articles in this special issue). However, field studies taking advantage of natural gradients or CO 2 -rich environments (e.g., Johnson et al 2011;Porzio et al 2013) or large-scale field studies using mesocosms (e.g., Troedsson et al 2012) can provide insights into the short-and long-term responses at ecosystem level.…”

Section: Experimental Designmentioning

confidence: 99%

A snapshot of ocean acidification research

Dupont

Pörtner

2013

Mar Biol

View full text Add to dashboard Cite

This special issue compiles 37 manuscripts investigating the biological impacts and societal relevance of ocean acidification. It includes important considerations regarding experimental design, new methods and how ocean acidification science can contribute to society through education and socioeconomic assessment. Altogether, this special issue constitutes a snapshot of recent ocean acidification research. This paper aims at summarizing the key findings and highlights future challenges and research priorities.

show abstract

Section: Experimental Designmentioning

confidence: 99%

A snapshot of ocean acidification research

Dupont

Pörtner

2013

Mar Biol

View full text Add to dashboard Cite

show abstract

“…Kuffner et al 2008, Ordoñez et al 2014 and recruitment (e.g. Porzio et al 2013). However, a few studies have reported potential dissolution while rates of growth, calcification and/or photosynthesis have remained unaffected or even increased in response to OA (e.g.…”

Section: Introductionmentioning

confidence: 99%

Ocean warming has greater and more consistent negative effects than ocean acidification on the growth and health of subtropical macroalgae

Graba‐Landry¹,

Hoey²,

Matley³

et al. 2018

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Macroalgae are the major habitat-forming organisms in many coastal temperate and subtropical marine systems. Although climate change has been identified as a major threat to the persistence of macroalgal beds, the combined effects of ocean warming and ocean acidification on algal performance are poorly understood. Here we investigate the effects of increased temperature and acidification on the growth, calcification and nutritional content of 6 common subtropical macroalgae; Sargassum linearifolium, Ulva sp., Amphiroa anceps, Corallina officinalis, Delisea pulchra and Laurencia decussata. Algae were reared in a factorial cross of 3 temperatures (23°C [ambient], 26°C and 28°C) and 3 pH levels (8.1 [ambient], 7.8 and 7.6) for 2 wk. The highest (28°C) temperature decreased the growth of all 6 macroalgal species, irrespective of the pH levels. In contrast, the effect of decreased pH on growth was variable. The growth of Ulva sp. and C. officinalis increased, L. decussata decreased, while the remaining 3 species were unaffected. Interestingly, the differential responses of macroalgae to ocean acidification were unrelated to whether or not a species was a calcifying alga, or their carbon-uptake mechanism-2 processes that are predicted to be sensitive to decreased pH. The growth of the calcifying algae (C. officinalis and A. anceps) was not affected by reduced pH but calcification of these 2 algae was reduced when exposed to a combination of reduced pH and elevated temperature. The 3 species capable of uptake of bicarbonate, S. linearifolium, L. decussata and Ulva sp., displayed positive, negative and neutral changes in growth, respectively, in response to reduced pH. The C:N ratio for 5 of the 6 species was unaffected by either pH or temperature. The consistent and predictable negative effects of temperature on the growth and calcification of subtropical macroalgae suggests that this stressor poses a greater threat to the persistence of subtropical macroalgal populations than ocean acidification under ongoing and future climate change.

show abstract

“…Off the Ischia Island along Castello Aragonese, natural underwater vents of volcanic origins release gases, mainly CO 2 , causing seawater acidification (Hall-Spencer et al 2008). This is one of the best characterized natural CO 2 vent sites in terms of physicochemical parameters and the presence of autotrophs and associated invertebrate communities (Hall-Spencer et al 2008;Martin et al 2008;Kerrison et al 2011;Porzio et al 2011Porzio et al , 2013Kroeker et al 2013;Garrard et al 2014;Lauritano et al 2015). Volcanic CO 2 vents acidify the seawater causing a pH gradient with three distinct zones with mean pH of 8.1, 7.8 and 6.7, respectively.…”

Section: Introductionmentioning

confidence: 99%

Molecular response of Sargassum vulgare to acidification at volcanic CO₂ vents: insights from de novo transcriptomic analysis

et al. 2017

View full text Add to dashboard Cite

Ocean acidification is an emerging problem that is expected to impact ocean species to varying degrees. Currently, little is known about its effect on molecular mechanisms induced in fleshy macroalgae. To elucidate genome wide responses to acidification, a transcriptome analysis was carried out on Sargassum vulgare populations growing under acidified conditions at volcanic CO vents and compared with populations in a control site. Several transcripts involved in a wide range of cellular and metabolic processes were differentially expressed. No drastic changes were observed in the carbon acquisition processes and RuBisCO level. Moreover, relatively few stress genes, including those for antioxidant enzymes and heat-shock proteins, were affected. Instead, increased expression of transcripts involved in energy metabolism, photosynthetic processes and ion homeostasis suggested that algae increased energy production to maintain ion homeostasis and other cellular processes. Also, an increased allocation of carbon to cell wall and carbon storage was observed. A number of genes encoding proteins involved in cellular signalling, information storage and processing and transposition were differentially expressed between the two conditions. The transcriptional changes of key enzymes were largely confirmed by enzymatic activity measurements. Altogether, the changes induced by acidification indicate an adaptation of growth and development of S. vulgare at the volcanic CO vents, suggesting that this fleshy alga exhibits a high plasticity to low pH and can adopt molecular strategies to grow also in future more acidified waters.

show abstract

The effect of ocean acidification on early algal colonization stages at natural CO2 vents

Cited by 42 publications

References 51 publications

A snapshot of ocean acidification research

A snapshot of ocean acidification research

Ocean warming has greater and more consistent negative effects than ocean acidification on the growth and health of subtropical macroalgae

Molecular response of Sargassum vulgare to acidification at volcanic CO₂ vents: insights from de novo transcriptomic analysis

Contact Info

Product

Resources

About

The effect of ocean acidification on early algal colonization stages at natural CO2 vents

Cited by 42 publications

References 51 publications

A snapshot of ocean acidification research

A snapshot of ocean acidification research

Ocean warming has greater and more consistent negative effects than ocean acidification on the growth and health of subtropical macroalgae

Molecular response of Sargassum vulgare to acidification at volcanic CO2 vents: insights from de novo transcriptomic analysis

Contact Info

Product

Resources

About

Molecular response of Sargassum vulgare to acidification at volcanic CO₂ vents: insights from de novo transcriptomic analysis