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Schubert N, Tuya F, Peña V, Horta PA, Salazar VW, Neves P, Ribeiro C, Otero-Ferrer F, Espino F, Schoenrock K, Ragazzola F, Olivé I, Giaccone T, Nannini M, Mangano MC, Sará G, Mancuso FP, Tantillo MF, Bosch-Belmar M, Martin S, Le Gall L, Santos R, Silva J. "Pink power"-the importance of coralline algal beds in the oceanic carbon cycle. Nat Commun 2024; 15:8282. [PMID: 39333525 PMCID: PMC11436964 DOI: 10.1038/s41467-024-52697-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 09/18/2024] [Indexed: 09/29/2024] Open
Abstract
Current evidence suggests that macroalgal-dominated habitats are important contributors to the oceanic carbon cycle, though the role of those formed by calcifiers remains controversial. Globally distributed coralline algal beds, built by pink coloured rhodoliths and maerl, cover extensive coastal shelf areas of the planet, but scarce information on their productivity, net carbon flux dynamics and carbonate deposits hampers assessing their contribution to the overall oceanic carbon cycle. Here, our data, covering large bathymetrical (2-51 m) and geographical ranges (53°N-27°S), show that coralline algal beds are highly productive habitats that can express substantial carbon uptake rates (28-1347 g C m-2 day-1), which vary in function of light availability and species composition and exceed reported estimates for other major macroalgal habitats. This high productivity, together with their substantial carbonate deposits (0.4-38 kilotons), renders coralline algal beds as highly relevant contributors to the present and future oceanic carbon cycle.
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Affiliation(s)
- Nadine Schubert
- Centre of Marine Sciences (CCMAR/CIMAR LA), Campus de Gambelas, Universidade do Algarve, 8005-139, Faro, Portugal.
| | - Fernando Tuya
- Grupo en Biodiversidad y Conservación (IU-ECOAQUA), Universidad de Las Palmas de Gran Canaria, Telde, Spain
| | - Viviana Peña
- BioCost Research Group, Departamento de Bioloxía, Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
| | - Paulo A Horta
- Laboratório de Ficologia, Departamento de Botânica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianopolis, Brazil
| | - Vinícius W Salazar
- Laboratório de Ficologia, Departamento de Botânica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianopolis, Brazil
- Melbourne Integrative Genomics, The University of Melbourne, Parkville, Australia
| | - Pedro Neves
- Centre of Marine Sciences (CCMAR/CIMAR LA), Campus de Gambelas, Universidade do Algarve, 8005-139, Faro, Portugal
- Observatório Oceânico da Madeira, Agência Regional para o Desenvolvimento da Investigação, Tecnologia e Inovação (OOM/ ARDITI), Edifício Madeira Tecnopolo, Funchal, Madeira, Portugal
| | - Cláudia Ribeiro
- Centre of Marine Sciences (CCMAR/CIMAR LA), Campus de Gambelas, Universidade do Algarve, 8005-139, Faro, Portugal
- IFCN-Instituto das Florestas e Conservação da Natureza, IP-RAM, Madeira, Funchal, Portugal
| | - Francisco Otero-Ferrer
- Grupo en Biodiversidad y Conservación (IU-ECOAQUA), Universidad de Las Palmas de Gran Canaria, Telde, Spain
- Asociación Biodiversidad Atlántica y Sostenibilidad (ABAS), Telde, Spain
| | - Fernando Espino
- Grupo en Biodiversidad y Conservación (IU-ECOAQUA), Universidad de Las Palmas de Gran Canaria, Telde, Spain
| | - Kathryn Schoenrock
- Department of Zoology, School of Natural Sciences, The Ryan Institute for Environmental, Marine and Energy Research, University of Galway, Galway, Ireland
| | - Federica Ragazzola
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Genoa Marine Centre, Genova, Italy
- NBFC, National Biodiversity Future Center, Piazza Marina 61, 90133, Palermo, Italy
| | - Irene Olivé
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Thalassia Giaccone
- NBFC, National Biodiversity Future Center, Piazza Marina 61, 90133, Palermo, Italy
- Department of Integrative Marine Ecology (EMI), Anton Dohrn Zoological Station, Sicily Marine Centre, Messina, Italy
| | - Matteo Nannini
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Genoa Marine Centre, Genova, Italy
| | - M Cristina Mangano
- NBFC, National Biodiversity Future Center, Piazza Marina 61, 90133, Palermo, Italy
- Department of Integrative Marine Ecology (EMI), Stazione Zoologica Anton Dohrn, Sicily Marine Centre Lungomare Cristoforo Colombo (complesso Roosevelt), Palermo, Italy
| | - Gianluca Sará
- NBFC, National Biodiversity Future Center, Piazza Marina 61, 90133, Palermo, Italy
- Laboratory of Ecology, Department of Earth and Marine Sciences, DiSTeM, University of Palermo, Palermo, Italy
| | - Francesco Paolo Mancuso
- NBFC, National Biodiversity Future Center, Piazza Marina 61, 90133, Palermo, Italy
- Laboratory of Ecology, Department of Earth and Marine Sciences, DiSTeM, University of Palermo, Palermo, Italy
| | - Mario Francesco Tantillo
- Laboratory of Ecology, Department of Earth and Marine Sciences, DiSTeM, University of Palermo, Palermo, Italy
| | - Mar Bosch-Belmar
- NBFC, National Biodiversity Future Center, Piazza Marina 61, 90133, Palermo, Italy
- Laboratory of Ecology, Department of Earth and Marine Sciences, DiSTeM, University of Palermo, Palermo, Italy
| | - Sophie Martin
- UMR 7144 Adaptation et Diversité en Milieu Marin, CNRS, Sorbonne Université, Station Biologique de Roscoff, Roscoff, France
| | - Line Le Gall
- Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Rui Santos
- Centre of Marine Sciences (CCMAR/CIMAR LA), Campus de Gambelas, Universidade do Algarve, 8005-139, Faro, Portugal
| | - João Silva
- Centre of Marine Sciences (CCMAR/CIMAR LA), Campus de Gambelas, Universidade do Algarve, 8005-139, Faro, Portugal
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Pisani D, De Lucia C, Pazienza P, Mastrototaro F, Tursi A, Chimienti G. Assessing the economic value of Posidonia oceanica (L.) at Tremiti Islands (Mediterranean Sea): An ecosystem condition-based approach. MARINE POLLUTION BULLETIN 2024; 202:116274. [PMID: 38564819 DOI: 10.1016/j.marpolbul.2024.116274] [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: 01/16/2024] [Revised: 03/12/2024] [Accepted: 03/16/2024] [Indexed: 04/04/2024]
Abstract
In the context of limiting global warming, the seagrass Posidonia oceanica (L.) gained the centrality of several international climate change mitigation projects being the most effective carbon storage sink among Mediterranean seagrasses. To assess and monitor the change of environmental conditions and economic values of natural resources, the present study moves from the insights of the System of Environmental-Economic Accounting - Ecosystem Accounting to assess the economic value of the carbon sequestration and storage capacity of the Mediterranean-endemic seagrass P. oceanica at the Tremiti Islands Marine Protected Area. The economic value is compared across: i. the reference study by Pergent-Martini et al.; ii. the ecological condition-based approach; and iii. the unit value transfer. Based on the obtained outcomes, an ecosystem-based approach would prevent biases in the accounting of the ecosystem-service provision capacity of P. oceanica and help the policy maker to implement adequate public investment policies to mitigate its overall degradation.
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Affiliation(s)
- Domenico Pisani
- Department of Economics, Management and Territory, University of Foggia, Via Alberto da Zara, 11, Foggia, Italy.
| | - Caterina De Lucia
- Department of Economics, Management and Territory, University of Foggia, Via Alberto da Zara, 11, Foggia, Italy
| | - Pasquale Pazienza
- Department of Economics, Management and Territory, University of Foggia, Via Alberto da Zara, 11, Foggia, Italy
| | - Francesco Mastrototaro
- Department of Biosciences, Biotechnology and Environment, University of Bari, Via E. Orabona, 4, 70125 Bari, Italy; CoNISMa, Piazzale Flaminio, 9, 00196 Rome, Italy
| | - Andrea Tursi
- Department of Biosciences, Biotechnology and Environment, University of Bari, Via E. Orabona, 4, 70125 Bari, Italy; CoNISMa, Piazzale Flaminio, 9, 00196 Rome, Italy
| | - Giovanni Chimienti
- CoNISMa, Piazzale Flaminio, 9, 00196 Rome, Italy; Red Sea Research Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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Menandro PS, Misiuk B, Brown CJ, Bastos AC. Multispectral multibeam backscatter response of heterogeneous rhodolith beds. Sci Rep 2023; 13:20220. [PMID: 37980368 PMCID: PMC10657437 DOI: 10.1038/s41598-023-46240-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/30/2023] [Indexed: 11/20/2023] Open
Abstract
Acoustic backscatter has been used as a tool to map the seafloor in greater detail and plays an increasingly important role in seafloor mapping to meet multiple ocean management needs. An outstanding challenge to the use of backscatter for seafloor mapping is the distinction between acoustically similar substrates, such as mixed sediments from rhodoliths. Rhodolith beds are a biogenic substrate that provides important ecological services, and are typically classified as a single categorical substrate type-though nodules coverage may be spatially variable. Recently, multispectral acoustic backscatter has demonstrated great potential to improve thematic seafloor mapping compared to single-frequency systems. This work employs multispectral multibeam backscatter and underwater imagery to characterize and map rhodolith beds in the Costa das Algas Marine Protected Area (Brazil). A support vector machine classifier was used to classify multifrequency backscatter mosaics according to rhodolith classes identified from underwater imagery. Results suggest that multispectral backscatter is effective both in providing information for mapping different proportions of rhodolith coverage and in predicting the presence or absence of these nodules. The backscatter of the lowest frequency was the most useful for distinguishing variable proportions of rhodolith coverage, and the two higher frequencies were better predictors of presence and absence.
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Affiliation(s)
- Pedro S Menandro
- Marine Geosciences Lab (Labogeo), Departamento de Oceanografia E Ecologia, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Benjamin Misiuk
- Seascape Ecology and Mapping Lab, Department of Oceanography, Dalhousie University, Halifax, NS, Canada
| | - Craig J Brown
- Seascape Ecology and Mapping Lab, Department of Oceanography, Dalhousie University, Halifax, NS, Canada
| | - Alex C Bastos
- Marine Geosciences Lab (Labogeo), Departamento de Oceanografia E Ecologia, Universidade Federal do Espírito Santo, Vitória, ES, Brazil.
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Caulerpa cylindracea Spread on Deep Rhodolith Beds Can Be Influenced by the Morphostructural Composition of the Bed. DIVERSITY 2023. [DOI: 10.3390/d15030349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
The green alga Caulerpa cylindracea Sonder (Chlorophyta; Bryopsidales) is one of the most invasive alien macroalgae in the Mediterranean Sea, where it is also spreading on rhodolith beds, an important biogenic assemblage typical of deep substrates. Despite the importance of rhodoliths, data on the competitive interactions with C. cylindracea are still scarce. To deepen the knowledge on the topic, C. cylindracea occurrence on the rhodolith bed of Capo Carbonara Marine Protected Area (Italy) was explored. Quantitative analyses of videoframes obtained from Remote Operated Vehicle records in three different MPA sites, Is Piscadeddus, Santa Caterina, and Serpentara, allow for estimates of both the cover of rhodoliths (considering the main morphotypes) and of C. cylindracea, as well as their competition. All sites showed a well-developed rhodolith bed, although some differences were highlighted in their composition in terms of morphotype, shape, and dimension of rhodoliths, as well as in the C. cylindracea cover. In particular, Santa Caterina appeared to be the site with the highest mean total cover of rhodoliths (68%), and of C. cylindracea (25%). The obtained results suggest that different competitive interactions occur between C. cylindracea and rhodolith beds, in relation to the morphostructural composition of the latter and in response to environmental conditions that affect rhodolith bed composition.
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Effect of Depth across a Latitudinal Gradient in the Structure of Rhodolith Seabeds and Associated Biota across the Eastern Atlantic Ocean. DIVERSITY 2023. [DOI: 10.3390/d15010103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Rhodolith seabeds are ‘ecosystem engineers’ composed of free-living calcareous red macroalgae, which create extensive marine habitats. This study addressed how depth influenced the structure (size and morphology) of rhodoliths and the abundance of associated floral and faunal epibionts across the Eastern Atlantic Ocean. Sampling was carried out at two sites within five regions (Brittany, Galicia, Madeira, Gran Canaria, and Principe Island), from temperate to tropical, covering a latitudinal gradient of 47°, in three depth strata (shallow, intermediate and deep), according to the rhodolith bathymetrical range in each region. Depth typically affected the rhodolith size at all regions; the largest nodules were found in the intermediate and deep strata, while rhodolith sphericity was larger at the shallow depth strata. Higher biomasses of attached macroalgae (epiphytes) were observed at depths where rhodoliths were larger. The abundance of epifauna was variable across regions and depth strata. In general, the occurrence, structure, and abundance of the associated biota across rhodolith habitats were affected by depth, with local variability (i.e., sites within regions) often displaying a more significant influence than the regional (large-scale) variation. Overall, this study showed that the rhodolith morphology and associated epibionts (flora and fauna) were mostly affected by depth, irrespective of latitude.
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Basso D, Piazza G, Bracchi VA. Calcification traits for cryptic species identification: Insights into coralline biomineralization. PLoS One 2022; 17:e0273505. [PMID: 36190996 PMCID: PMC9529143 DOI: 10.1371/journal.pone.0273505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 08/09/2022] [Indexed: 11/06/2022] Open
Abstract
Calcareous red algae are foundation species and ecosystem engineers with a global distribution. The principles governing their calcification pathways are still debated and the morphological characters are frequently unreliable for species segregation, as shown by molecular genetics. The recent description of the new species Lithophyllum pseudoracemus, previously undetected and morphologically confused with Lithophyllum racemus, offered a challenging opportunity to test the effectiveness of microanatomy and ultrastructural calcification traits as tools for the identification of these two species, for integrative taxonomy. High resolution SEM images of molecularly identified samples showed that the different size of the perithallial cells and the features of the asexual conceptacle chambers may contribute to the separation of the two species. The two species share the same crystallite morphology in the primary and secondary cell-wall calcification, as previously described in other species belonging to the same clade. However, the perithallial secondary calcification was significantly thicker in L. racemus than in L. pseudoracemus. We described a granular calcified layer in the innermost part of the cell wall, as a putative precursor phase in the biomineralization and formation of the secondary calcification. The hypothesis of different pathways for the formation of the primary and secondary calcification is supported by the observed cell elongation associated with thicker and higher Mg/Ca primary calcification, the inverse correlation of primary and secondary calcification thickness, and the absence of primary calcification in the newly formed wall cutting off an epithallial cell from the meristem.
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Affiliation(s)
- Daniela Basso
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
- CoNISMa Research Unit of Milano-Bicocca, Milano, Italy
- * E-mail:
| | - Giulia Piazza
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
- Department of Earth and Ocean Dynamics, University of Barcelona, Barcelona, Spain
| | - Valentina Alice Bracchi
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milan, Italy
- CoNISMa Research Unit of Milano-Bicocca, Milano, Italy
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Rendina F, Buonocore E, di Montanara AC, Russo G. The scientific research on rhodolith beds: A review through bibliometric network analysis. ECOL INFORM 2022. [DOI: 10.1016/j.ecoinf.2022.101738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Tursi A, Mastrototaro F, Montesanto F, De Giosa F, Lisco A, Bottalico A, Chimienti G. The Status of Posidonia oceanica at Tremiti Islands Marine Protected Area (Adriatic Sea). BIOLOGY 2022; 11:biology11060923. [PMID: 35741443 PMCID: PMC9220029 DOI: 10.3390/biology11060923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/20/2022] [Accepted: 06/13/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary The seagrass Posidonia oceanica is the most important marine phanerogam of the Mediterranean Sea due to its meadows’ complexity, persistence, and extension. These habitats provide a suite of ecosystem goods and services, being of primary importance in marine conservation. Despite their central role in the coastal ecology, P. oceanica meadows are undergoing overall deterioration and fragmentation in the basin mostly due to anthropogenic impacts at local to global scales. In the last decades, several management measures have been proposed aiming to improve the meadow health conditions, while the periodic monitoring of P. oceanica meadows allows for verifying their effectiveness. Here, we report the results of the monitoring of P. oceanica at Tremiti Islands Marine Protected Area (Adriatic Sea, Italy) carried out in 2003, 2015, and 2020. A general worsening was observed, particularly enhanced by direct anthropogenic impacts mostly related to anchoring practices, as well as by a certain level of sedimentation possibly deriving from coastal development. However, the identification of these impacts and the correct management of human activities to mitigate them produced positive results in a relatively short time span. Abstract Posidonia oceanica meadows are Mediterranean coastal habitats of great conservation importance. This study is focused on a meadow located at Tremiti Islands Marine Protected Area (Adriatic Sea, Italy), which was monitored in 2003, 2015, and 2020 to evaluate its health state over time in relation to coastal human activities, which have been highly affecting this MPA for the last 20 years. To assess any change in the physiognomy of the meadow, rhizome density, percentage coverage, and lower limit progressions and/or regression over time were evaluated by scuba diving, while the distribution and extension of the meadow were assessed through habitat mapping using a side-scan sonar. Moreover, phenological and lepidochronological analyses were performed on the collected rhizomes to assess the leaf area index (LAI, m2m−2) and the rhizome age (lepidochronological years). Our study showed a general deterioration of P. oceanica meadow from 2003 to 2020, with a significant reduction of its absolute and relative rhizome density and LAI at almost all sampling stations, absence of renovation of the meadow, and lower limit regression and overall worsening of the main conservation status indicators. However, appropriate management actions, such as the establishment of mooring buoy fields, supported the improvement of the P. oceanica status at the local scale with a significant increase in density and LAI and the presence of active stolonization processes, suggesting that mitigation actions can play a crucial role in the conservation of this habitat. On the contrary, local anthropogenic impacts, especially anchoring and coastal development, markedly affect the resilience of P. oceanica meadows to global stressors, such as climate change.
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Affiliation(s)
- Andrea Tursi
- Department of Biology, University of Bari Aldo Moro, 70125 Bari, Italy; (F.M.); (A.L.); (A.B.); (G.C.)
- CoNISMa (Consorzio Nazionale Interuniversitario per le Scienze del Mare), 00196 Rome, Italy
- Correspondence:
| | - Francesco Mastrototaro
- Department of Biology, University of Bari Aldo Moro, 70125 Bari, Italy; (F.M.); (A.L.); (A.B.); (G.C.)
- CoNISMa (Consorzio Nazionale Interuniversitario per le Scienze del Mare), 00196 Rome, Italy
| | - Federica Montesanto
- Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln, 1400 R Street, Lincoln, NE 68588, USA;
| | - Francesco De Giosa
- Environmental Surveys S.r.l. (ENSU), Via De Gasperi, 74123 Taranto, Italy;
| | - Anna Lisco
- Department of Biology, University of Bari Aldo Moro, 70125 Bari, Italy; (F.M.); (A.L.); (A.B.); (G.C.)
| | - Antonella Bottalico
- Department of Biology, University of Bari Aldo Moro, 70125 Bari, Italy; (F.M.); (A.L.); (A.B.); (G.C.)
| | - Giovanni Chimienti
- Department of Biology, University of Bari Aldo Moro, 70125 Bari, Italy; (F.M.); (A.L.); (A.B.); (G.C.)
- CoNISMa (Consorzio Nazionale Interuniversitario per le Scienze del Mare), 00196 Rome, Italy
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Morphostructural Characterization of the Heterogeneous Rhodolith Bed at the Marine Protected Area “Capo Carbonara” (Italy) and Hydrodynamics. DIVERSITY 2022. [DOI: 10.3390/d14010051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mediterranean rhodolith beds are priority marine benthic habitats for the European Community, because of their relevance as biodiversity hotspots and their role in the carbonate budget. Presently, Mediterranean rhodolith beds typically occur within the range of 30–75 m of water depth, generally located around islands and capes, on flat or gently sloping areas. In the framework of a collaboration between the University of Milano-Bicocca and the Marine Protected Area “Capo Carbonara” (Sardinia, Italy), video explorations and sampling collections in three selected sites revealed the occurrence of a well developed and heterogeneous rhodolith bed. This bed covers an area >41 km2 around the cape, with live coverage ranging between 6.50 and 55.25%. Rhodoliths showed interesting morphostructural differences. They are small compact pralines at the Serpentara Island, associated with gravelly sand, or bigger boxwork at the Santa Caterina shoal associated with sand, whereas branches are reported mostly in the Is Piscadeddus shoal, associated with muddy sand. Both in the Santa Caterina shoal and the Serpentara Island, rhodoliths generally show a spheroidal shape, associated with a mean value of currents of 4.3 and 7.3 cm/s, respectively, up to a maximum of 17.7 cm/s at Serpentara, whereas in the Is Piscadeddus shoal rhodolith shape is variable and current velocity is significantly lower. The different hydrodynamic regime, with a constant current directed SW, which deviates around the cape towards E, is responsible for such morphostructural heterogeneity, with the site of the Serpentara Island being the most exposed to a constant unidirectional and strong current. We can associate current velocity with specific rhodolith morphotypes. The morphostructural definition of the heterogeneity of rhodoliths across large beds must be considered for appropriate management policies.
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