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Bermejo R, Galindo-Ponce M, Golden N, Linderhoff C, Heesch S, Hernández I, Morrison L. Two bloom-forming species of Ulva (Chlorophyta) show different responses to seawater temperature and no antagonistic interaction. JOURNAL OF PHYCOLOGY 2023; 59:167-178. [PMID: 36371650 DOI: 10.1111/jpy.13302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
The generalized use of molecular identification tools indicated that multispecific green tides are more common than previously thought. Temporal successions between bloom-forming species on a seasonal basis were also revealed in different cold temperate estuaries, suggesting a key role of photoperiod and temperature controlling bloom development and composition. According to the Intergovernmental Panel on Climate Change, water temperatures are predicted to increase around 4°C by 2100 in Ireland, especially during late spring coinciding with early green tide development. Considering current and predicted temperatures, and photoperiods during bloom development, different eco-physiological experiments were developed. These experiments indicated that the growth of Ulva lacinulata was controlled by temperature, while U. compressa was unresponsive to the photoperiod and temperatures assayed. Considering a scenario of global warming for Irish waters, an earlier development of bloom is expected in the case of U. lacinulata. This could have significant consequences for biomass balance in Irish estuaries and the maximum accumulated biomass during peak bloom. The observed seasonal patterns and experiments also indicated that U. compressa may facilitate U. lacinulata development. When both species were co-cultivated, the culture performance showed intermediate responses to experimental treatments in comparison with monospecific cultures of both species.
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Affiliation(s)
- Ricardo Bermejo
- Department of Ecology and Geology, University of Malaga. Instituto Andaluz de Biotecnología y Desarrollo Azul (IBYDA), University Campus of Teatinos, E29010, Malaga, Spain
| | - Maria Galindo-Ponce
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cadiz, E11510, Puerto Real, Spain
| | - Nessa Golden
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, University of Galway, Galway, H91 TK33, Ireland
| | | | - Svenja Heesch
- CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, 29688, Roscoff cedex, France
| | - Ignacio Hernández
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cadiz, E11510, Puerto Real, Spain
| | - Liam Morrison
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, University of Galway, Galway, H91 TK33, Ireland
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Kwan V, Fong J, Ng CSL, Huang D. Temporal and spatial dynamics of tropical macroalgal contributions to blue carbon. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 828:154369. [PMID: 35259389 DOI: 10.1016/j.scitotenv.2022.154369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
Blue carbon ecosystems are a vital part of nature-based climate solutions due to their capacity to store and sequester carbon, but often exclude macroalgal beds even though they can form highly productive coastal ecosystems. Recent estimates of macroalgal contributions to global carbon sequestration are derived primarily from temperate kelp forests, while tropical macroalgal carbon stock in living biomass is still unclear. Here, using Singapore as a case study, we integrate field surveys and remote sensing data to estimate living macroalgal carbon stock. Results show that macroalgae in Singapore account for up to 650 Mg C biomass stock, which is greater than the aboveground carbon found in seagrass meadows but lower than that in mangrove forests. Ulva and Sargassum dominate macroalgal assemblages and biomass along the coast, with both genera exhibiting distinct spatio-temporal variation. The annual range of macroalgal biomass carbon is estimated to be 450 Mg C yr-1, or 0.77 Mg C ha-1 yr-1. Noting the uncertainties of the fate of macroalgal biomass carbon, we estimate the potential sequestration rate and find that it is comparable to mature terrestrial ecosystems such as tropical grasslands and temperate forests. This study demonstrates that macroalgal seasonality allows for a consistent amount of biomass carbon to either be exported and eventually sequestered, or harvested for utilization on an annual basis. These findings on macroalgal growth patterns and their considerable contributions to tropical coastal carbon pool add to the growing support for macroalgae to be formally included in blue carbon assessments.
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Affiliation(s)
- Valerie Kwan
- Department of Biological Sciences, National University of Singapore, Singapore 117558, Singapore; Centre for Nature-based Climate Solutions, National University of Singapore, Singapore 117558, Singapore.
| | - Jenny Fong
- Tropical Marine Science Institute, National University of Singapore, Singapore 119227, Singapore
| | - Chin Soon Lionel Ng
- Tropical Marine Science Institute, National University of Singapore, Singapore 119227, Singapore
| | - Danwei Huang
- Department of Biological Sciences, National University of Singapore, Singapore 117558, Singapore; Centre for Nature-based Climate Solutions, National University of Singapore, Singapore 117558, Singapore; Tropical Marine Science Institute, National University of Singapore, Singapore 119227, Singapore.
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Bermejo R, Golden N, Schrofner E, Knöller K, Fenton O, Serrão E, Morrison L. Biomass and nutrient dynamics of major green tides in Ireland: Implications for biomonitoring. MARINE POLLUTION BULLETIN 2022; 175:113318. [PMID: 35065355 DOI: 10.1016/j.marpolbul.2021.113318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/25/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
The control of macroalgal bloom development is central for protecting estuarine ecosystems. The identification of the nutrients limiting the development of macroalgal blooms, and their most likely sources is crucial for management strategies. Three Irish estuaries (Argideen, Clonakilty and Tolka) affected by green tides were monitored from June 2016 to August 2017. During each sampling occasion, biomass abundances, tissue N and P contents, and δ15N were determined for tubular and laminar morphologies of Ulva. All estuaries showed maximum biomass during summer and minimum during winter. Tissue nutrient contents revealed P rather than N limitation. The δ15N during the peak bloom indicated agriculture as the most likely source of nitrogen in the Argideen and Clonakilty, and urban wastewaters in the Tolka. No differences in the δ15N, and the tissue nutrients content were observed between morphologies. The period between May and July is most suitable for bioassessment of green tides.
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Affiliation(s)
- Ricardo Bermejo
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway H91 TK33, Ireland; Department of Biology, Faculty of Marine and Environmental Sciences, University of Cadiz, E11510 Puerto Real, Spain.
| | - Nessa Golden
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway H91 TK33, Ireland
| | - Elena Schrofner
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway H91 TK33, Ireland; Center of Marine Sciences (CCMAR), CIMAR Laboratorio Associado, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal
| | - Kay Knöller
- Department of Catchment Hydrology, Helmholtz-Centre for Environmental Research, UFZ Theodor-Lieser-Straße 4, D-06120 Halle, Germany
| | - Owen Fenton
- Teagasc, Johnstown Castle, Co, Wexford, Ireland
| | - Ester Serrão
- Center of Marine Sciences (CCMAR), CIMAR Laboratorio Associado, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal
| | - Liam Morrison
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway H91 TK33, Ireland.
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Joniver CF, Photiades A, Moore PJ, Winters AL, Woolmer A, Adams JM. The global problem of nuisance macroalgal blooms and pathways to its use in the circular economy. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102407] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Afonso C, Correia AP, Freitas MV, Baptista T, Neves M, Mouga T. Seasonal Changes in the Nutritional Composition of Agarophyton vermiculophyllum (Rhodophyta, Gracilariales) from the Center of Portugal. Foods 2021; 10:foods10051145. [PMID: 34065392 PMCID: PMC8160604 DOI: 10.3390/foods10051145] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/12/2021] [Accepted: 05/17/2021] [Indexed: 02/07/2023] Open
Abstract
Seaweeds exhibit high nutritional value due to a balanced concentration of proteins, vitamins and minerals, a high concentration of low digestibility polysaccharides, and reduced levels of lipids, many of which are n-3 and n-6 fatty acids. The species Agarophyton vermiculophyllum is no exception and, as such, a comprehensive study of the chemical and nutritional profile of this red seaweed was carried out for 1 year. Seasonal variations in moisture, ash, protein and amino acids content, crude fibers, ascorbic acid, agar, lipids, and the corresponding fatty acid profile, were analyzed. We found low levels of fatty acids and a high protein content, but also noticed interesting seasonal change patterns in these compounds. The present study gives insights on the environmental conditions that can lead to changes in the nutritional composition of this species, aiming, therefore, to bring new conclusions about the manipulation of environmental conditions that allow for maximizing the nutritional value of this seaweed.
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Bermejo R, Macías M, Sánchez-García F, Love R, Varela-Álvarez E, Hernández I. Influence of irradiance, dissolved nutrients and salinity on the colour and nutritional characteristics of Gracilariopsis longissima (Rhodophyta). ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.102121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Pacheco D, Araújo GS, Cotas J, Gaspar R, Neto JM, Pereira L. Invasive Seaweeds in the Iberian Peninsula: A Contribution for Food Supply. Mar Drugs 2020; 18:E560. [PMID: 33207613 PMCID: PMC7697577 DOI: 10.3390/md18110560] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/06/2020] [Accepted: 11/12/2020] [Indexed: 12/11/2022] Open
Abstract
The introduction of exotic organisms in marine ecosystems can lead to economic and ecological losses. Globally, seaweeds represent a significant part of these non-indigenous species (NIS), with 407 introduced algal species. Furthermore, the presence of NIS seaweeds has been reported as a major concern worldwide since the patterns of their potential invasion mechanisms and vectors are not yet fully understood. Currently, in the Iberian Peninsula, around 50 NIS seaweeds have been recorded. Some of these are also considered invasive due to their overgrowth characteristic and competition with other species. However, invasive seaweeds are suitable for industrial applications due to their high feedstock. Hence, seaweeds' historical use in daily food diet, allied to research findings, showed that macroalgae are a source of nutrients and bioactive compounds with nutraceutical properties. The main goal of this review is to evaluate the records of NIS seaweeds in the Iberian Peninsula and critically analyze the potential of invasive seaweeds application in the food industry.
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Affiliation(s)
- Diana Pacheco
- Department of Life Sciences, Marine and Environmental Sciences Centre (MARE), University of Coimbra, 3000-456 Coimbra, Portugal; (D.P.); (J.C.); (R.G.); (J.M.N.)
| | - Glacio Souza Araújo
- Federal Institute of Education, Science and Technology of Ceará–IFCE, Campus Aracati, CE 040, km 137,1, Aracati 62800-000, Ceará, Brazil;
| | - João Cotas
- Department of Life Sciences, Marine and Environmental Sciences Centre (MARE), University of Coimbra, 3000-456 Coimbra, Portugal; (D.P.); (J.C.); (R.G.); (J.M.N.)
| | - Rui Gaspar
- Department of Life Sciences, Marine and Environmental Sciences Centre (MARE), University of Coimbra, 3000-456 Coimbra, Portugal; (D.P.); (J.C.); (R.G.); (J.M.N.)
| | - João M. Neto
- Department of Life Sciences, Marine and Environmental Sciences Centre (MARE), University of Coimbra, 3000-456 Coimbra, Portugal; (D.P.); (J.C.); (R.G.); (J.M.N.)
| | - Leonel Pereira
- Department of Life Sciences, Marine and Environmental Sciences Centre (MARE), University of Coimbra, 3000-456 Coimbra, Portugal; (D.P.); (J.C.); (R.G.); (J.M.N.)
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