ArticlePhotosynthesis research2015
High prevalence of diffusive uptake of CO2 by macroalgae in a temperate subtidal ecosystem.
Article in Photosynthesis research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed.
- Ocean Carbon Dioxide Removal and Storage.Chemical reviews · 2026Review
- The effects of temperature and COJournal of phycology · 2024Article
- Effects of pH, Temperature, and Light on the Inorganic Carbon Uptake Strategies in Early Life Stages ofPlants (Basel, Switzerland) · 2024Article
- Water motion and pH jointly impact the availability of dissolved inorganic carbon to macroalgae.Scientific reports · 2022Article
- Biotic habitats as refugia under ocean acidification.Conservation physiology · 2021Article
- Photosynthetic responses ofPeerJ · 2021Article
- Nitrogen sufficiency enhances thermal tolerance in habitat-forming kelp: implications for acclimation under thermal stress.Scientific reports · 2020Article
- Ocean Acidification and Warming Lead to Increased Growth and Altered Chloroplast Morphology in the Thermo-Tolerant AlgaFrontiers in plant science · 2020Article
- Ocean change within shoreline communities: from biomechanics to behaviour and beyond.Conservation physiology · 2019Article
- Responses of macroalgae to COEcology and evolution · 2019Article
- Article
- The role of irradiance and C-use strategies in tropical macroalgae photosynthetic response to ocean acidification.Scientific reports · 2018Article
- Acidification increases abundances ofPeerJ · 2018Article
- Inorganic carbon physiology underpins macroalgal responses to elevated COScientific reports · 2017Article
- Ocean acidification reverses the positive effects of seawater pH fluctuations on growth and photosynthesis of the habitat-forming kelp, Ecklonia radiata.Scientific reports · 2016Article
- Functional Traits for Carbon Access in Macrophytes.PloS one · 2016Article
- The ins and outs of CO2.Journal of experimental botany · 2016Article
- Predicting Effects of Ocean Acidification and Warming on Algae Lacking Carbon Concentrating Mechanisms.PloS one · 2015Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Productivity of most macroalgae is not currently considered limited by dissolved inorganic carbon (DIC), as the majority of species have CO2-concentrating mechanisms (CCM) allowing the active uptake of DIC. The alternative, diffusive uptake of CO2 (non-CCM), is considered rare (0-9% of all macroalgal cover in a given ecosystem), and identifying species without CCMs is important in understanding factors controlling inorganic carbon use by eukaryotic algae. CCM activity has higher energetic requirements than diffusive CO2 uptake, therefore when light is low, CCM activity is reduced in favour of diffusive CO2 uptake. We hypothesized that the proportional cover of macroalgae without CCMs (red and green macroalgae) would be low (<10%) across four sites in Tasmania, southern Australia at two depths (4-5 and 12-14 m); the proportion of species lacking CCMs would increase with decreasing depth; the δ(13)C values of macroalgae with CCMs would be more depleted with depth. We found the proportion of non-CCM species ranged from 0 to 90% and included species from all three macroalgal phyla: 81% of red (59 species), 14% of brown (three species) and 29% of green macroalgae (two species). The proportion of non-CCM species increased with depth at three of four sites. 35% of species tested had significantly depleted δ(13)C values at deeper depths. Non-CCM macroalgae are more abundant in some temperate reefs than previously thought. If ocean acidification benefits non-CCM species, the ramifications for subtidal macroalgal assemblages could be larger than previously considered.
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