Tags

Type your tag names separated by a space and hit enter

Photosynthetic Responses of Turf-forming Red Macroalgae to High CO2 Conditions.
J Phycol. 2020 02; 56(1):85-96.JP

Abstract

Seaweeds are important components of near-shore ecosystems as primary producers, foundation species, and biogeochemical engineers. Seaweed communities are likely to alter under predicted climate change scenarios. We tested the physiological responses of three perennial, turf-building, intertidal rhodophytes, Mastocarpus stellatus, Osmundea pinnatifida, and the calcified Ellisolandia elongata, to elevated pCO2 over 6 weeks. Responses varied between these three species. E. elongata was strongly affected by high pCO2 , whereas non-calcified species were not. Elevated pCO2 did not induce consistent responses of photosynthesis and respiration across these three species. While baseline photophysiology differed significantly between species, we found few clear effects of elevated pCO2 on this aspect of macroalgal physiology. We found effects of within-species variation in elevated pCO2 response in M. stellatus, but not in the other species. Overall, our data confirm the sensitivity of calcified macroalgae to elevated pCO2 , but we found no evidence suggesting that elevated pCO2 conditions will have a strong positive or negative impact on photosynthetic parameters in non-calcified macroalgae.

Authors+Show Affiliations

Department of Biological Science, Florida State University, 319 Stadium Drive, Tallahassee, Florida, 32306-4295, USA. Plymouth Marine Laboratory, Prospect Place, Plymouth, Devon, PL1 3DH, UK.School of Biological and Marine Sciences, University of Plymouth, 4th Floor Davy Building, Drake Circus, Plymouth, PL4 8AA, UK. Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Napoli, Italy. Faculty of Engineering, National University of Chimborazo, Av. Antonio José de Sucre Km 1 1/2 via Guano, EC 060108, Riobamba, Ecuador.School of Biological and Marine Sciences, University of Plymouth, 4th Floor Davy Building, Drake Circus, Plymouth, PL4 8AA, UK.Plymouth Marine Laboratory, Prospect Place, Plymouth, Devon, PL1 3DH, UK.Marine Biological Association of the UK, Citadel Hill, Plymouth, PL1 2PB, UK.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31553063

Citation

McCoy, Sophie J., et al. "Photosynthetic Responses of Turf-forming Red Macroalgae to High CO2 Conditions." Journal of Phycology, vol. 56, no. 1, 2020, pp. 85-96.
McCoy SJ, Santillán-Sarmiento A, Brown MT, et al. Photosynthetic Responses of Turf-forming Red Macroalgae to High CO2 Conditions. J Phycol. 2020;56(1):85-96.
McCoy, S. J., Santillán-Sarmiento, A., Brown, M. T., Widdicombe, S., & Wheeler, G. L. (2020). Photosynthetic Responses of Turf-forming Red Macroalgae to High CO2 Conditions. Journal of Phycology, 56(1), 85-96. https://doi.org/10.1111/jpy.12922
McCoy SJ, et al. Photosynthetic Responses of Turf-forming Red Macroalgae to High CO2 Conditions. J Phycol. 2020;56(1):85-96. PubMed PMID: 31553063.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photosynthetic Responses of Turf-forming Red Macroalgae to High CO2 Conditions. AU - McCoy,Sophie J, AU - Santillán-Sarmiento,Alex, AU - Brown,Murray T, AU - Widdicombe,Stephen, AU - Wheeler,Glen L, Y1 - 2019/11/06/ PY - 2019/02/12/received PY - 2019/08/18/accepted PY - 2019/9/26/pubmed PY - 2020/7/14/medline PY - 2019/9/26/entrez KW - Ellisolandia KW - Mastocarpus KW - Osmundea KW - elevated pCO2 KW - macroalgae KW - photophysiology KW - photosynthesis SP - 85 EP - 96 JF - Journal of phycology JO - J Phycol VL - 56 IS - 1 N2 - Seaweeds are important components of near-shore ecosystems as primary producers, foundation species, and biogeochemical engineers. Seaweed communities are likely to alter under predicted climate change scenarios. We tested the physiological responses of three perennial, turf-building, intertidal rhodophytes, Mastocarpus stellatus, Osmundea pinnatifida, and the calcified Ellisolandia elongata, to elevated pCO2 over 6 weeks. Responses varied between these three species. E. elongata was strongly affected by high pCO2 , whereas non-calcified species were not. Elevated pCO2 did not induce consistent responses of photosynthesis and respiration across these three species. While baseline photophysiology differed significantly between species, we found few clear effects of elevated pCO2 on this aspect of macroalgal physiology. We found effects of within-species variation in elevated pCO2 response in M. stellatus, but not in the other species. Overall, our data confirm the sensitivity of calcified macroalgae to elevated pCO2 , but we found no evidence suggesting that elevated pCO2 conditions will have a strong positive or negative impact on photosynthetic parameters in non-calcified macroalgae. SN - 1529-8817 UR - https://www.unboundmedicine.com/medline/citation/31553063/Photosynthetic_Responses_of_Turf_forming_Red_Macroalgae_to_High_CO2_Conditions_ DB - PRIME DP - Unbound Medicine ER -