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Guastella R, Evans J, Mancin N, Caruso A, Marchini A. Assessing the effect of Amphistegina lobifera invasion on infralittoral benthic foraminiferal assemblages in the Sicily Channel (Central Mediterranean). Mar Environ Res 2023; 192:106247. [PMID: 37931441 DOI: 10.1016/j.marenvres.2023.106247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/08/2023]
Abstract
This article documents, through a quantitative approach, the negative effect of the highly invasive species Amphistegina lobifera Larsen, 1976 on native benthic foraminiferal assemblages of coastal areas in the Sicily Channel (Central Mediterranean). A nested sampling design was applied through the comparison of benthic foraminiferal community structure across three areas that are known to be at different stages of invasion (i.e. Maltese Islands - advanced, southern Sicily - medium, and eastern Sicily - early). Results suggested that both diversity and richness of benthic foraminiferal community from the Maltese Islands were strongly modified by increased abundances of A. lobifera. In contrast, this phenomenon is less evident in southern and eastern Sicily, where the invader displayed lower abundances and the community structure was more diversified. Collected data also allowed for predicting what could happen in the near future in the whole Sicily Channel, as well as in the rest of the Mediterranean Sea.
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Affiliation(s)
- Roberta Guastella
- Dipartimento di Scienze Della Terra e Dell'Ambiente, Università di Pavia, Via Ferrata 1, 27100, Pavia, Italy.
| | - Julian Evans
- Department of Biology, University of Malta, Msida, MSD 2080, Malta.
| | - Nicoletta Mancin
- Dipartimento di Scienze Della Terra e Dell'Ambiente, Università di Pavia, Via Ferrata 1, 27100, Pavia, Italy.
| | - Antonio Caruso
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Università di Palermo, Via Archirafi 18, 90123, Palermo, Italy.
| | - Agnese Marchini
- Dipartimento di Scienze Della Terra e Dell'Ambiente, Università di Pavia, Via Ferrata 1, 27100, Pavia, Italy.
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Tarchi M, Zaaboub N, Alsubih M, Brik B, Martins MVA, Aleya L, Trabelsi L. Microalgae colonization and trace element accumulation on the plastisphere of marine plastic debris in Monastir Bay (Eastern Tunisia). Environ Sci Pollut Res Int 2023; 30:32427-32451. [PMID: 36460886 DOI: 10.1007/s11356-022-23930-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/27/2022] [Indexed: 06/17/2023]
Abstract
In this study, we examined the toxicity potential of the epiplastic microalgal community that developed on low-density polyethylene (LD-PE) plastic debris found in two distinct regions of the Monastir Bay (Tunisia): the coast exposed to anthropogenic discharges and the open sea in front of the Kuriat Islands. Concentrations of potentially toxic elements (PTEs) accumulated in sediments and plastisphere were compared in order to determine their toxicity potential to biological life. The collected plastispheres were predominantly composed of cyanobacteria, chlorophytes, and diatoms. Diatoms display a relatively high diversity (25 species). At all stations, potentially harmful microalgae (PHM) were more abundant in the plastisphere than in seawater and the coastal zone seems to harbour increased number of potentially harmful cyanobacteria within the plastisphere. At the offshore station S1, the PHM community was dominated by the potentially harmful diatoms belonging to the genus Pseudo-nitzschia. Phormidium sp. was the main potentially harmful cyanobacterium identified in the plastisphere of S1. PTEs concentration in the plastisphere was higher than in sediment and ranking with very high contamination factors at all sites according to the sequence Pb > Cu > Cd > Ni > Zn. The highest accumulation of PTEs in the plastisphere was recorded near harbors and industrial zones with important human interference. This work shows that plastisphere can be a threat to vulnerable species not only because it can contain PHM but also because it can accumulate PTEs.
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Affiliation(s)
- Mondher Tarchi
- Marine Biodiversity Laboratory, National Institute of Marine Sciences and Technology (INSTM), 2025 Salammbo, University of Carthage, Tunis, Tunisia
| | - Noureddine Zaaboub
- Marine Environment Laboratory, National Institute of Marine Sciences and Technology (INSTM), University of Carthage, 2025 Salammbo, Tunis, Tunisia
| | - Majed Alsubih
- Department of Civil Engineering, King Khalid University, Guraiger, Abha, 62529, Kingdom of Saudi Arabia
| | - Bochra Brik
- Marine Biodiversity Laboratory, National Institute of Marine Sciences and Technology (INSTM), 2025 Salammbo, University of Carthage, Tunis, Tunisia
| | - Maria Virgínia Alves Martins
- Faculdade de Geologia, Universidade Do Estado Do Rio de Janeiro, UERJ, Av. Sao Francisco Xavier, 24, Sala 2020A, Maracana, Rio de Janeiro, RJ 20550‑013, Brazil
- GeoBioTec, Departamento de Geociencias, Campus de Santiago, Universidade de Aveiro, 3810‑193, Aveiro, Portugal
| | - Lotfi Aleya
- Laboratoire de Chrono-Environnement, UMR CNRS 6249, Université de Bourgogne Franche-Comté, La Bouloie, 25030, Besançon Cedex, France
| | - Lamia Trabelsi
- Marine Biodiversity Laboratory, National Institute of Marine Sciences and Technology (INSTM), 2025 Salammbo, University of Carthage, Tunis, Tunisia.
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Di Bella L, Conte AM, Conti A, Esposito V, Gaglioti M, Ingrassia M, De Vittor C, Bigi S. Potential Resilience to Ocean Acidification of Benthic Foraminifers Living in Posidonia oceanica Meadows: The Case of the Shallow Venting Site of Panarea. Geosciences 2022; 12:184. [DOI: 10.3390/geosciences12050184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
This research shows the results regarding the response to acidic condition of the sediment and Posidonia foraminiferal assemblages collected around the Panarea Island. The Aeolian Archipelago represents a natural laboratory and a much-promising study site for multidisciplinary marine research (carbon capture and storage, geochemistry of hydrothermal fluids and ocean acidification vs. benthic and pelagic organisms). The variability and the complexity of the interaction of the ecological factors characterizing extreme environments such as shallow hydrothermal vents did not allow us to carry out a real pattern of biota responses in situ, differently from those observed under controlled laboratory conditions. However, the study provides new insights into foraminiferal response to increasing ocean acidification (OA) in terms of biodiversity, faunal density, specific composition of the assemblages and morphological variations of the shells. The study highlights how the foraminiferal response to different pH conditions can change depending on different environmental conditions and microhabitats (sediments, Posidonia leaves and rhizomes). Indeed, mineral sediments were more impacted by acidification, whereas Posidonia microhabitats, thanks to their buffer effect, can offer “refugia” and more mitigated acidic environment. At species level, rosalinids and agglutinated group represent the most abundant taxa showing the most specific resilience and capability to face acidic conditions.
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Saalim SM, Saraswat R, Nigam R. Ecological preferences of living benthic foraminifera from the Mahanadi river-dominated north-western Bay of Bengal: A potential environmental impact assessment tool. Mar Pollut Bull 2022; 175:113158. [PMID: 34838286 DOI: 10.1016/j.marpolbul.2021.113158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/12/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
The ecological preferences of living benthic foraminifera from the riverine influx dominated eastern continental margin of India have been studied. The living benthic foraminifera were abundant on the upper slope (~100-700 m). Three distinct species assemblages were identified. Assemblage 1 (Ammonia beccari, Pseudononion costiferum, Hanzawaia nipponica, Bolivina frondalis, Bolivina dilatata, Bolivina striatula, Asterorotalia milletti) representing warmer, well-oxygenated water and coarse substrate with low organic carbon is restricted to the inner shelf. Assemblage 2 includes species (Verneuilinulla propinqua, Ammodiscus incertus, Buliminella dubia, Rotaliatinopsis semiinvoluta, Bolivina lowmani, Fursenkoina spinosa) thriving in the regions with abundant food availability and low oxygen concentration on the continental slope. The species in Assemblage 3 (Globocassidulina subglobosa, Epistominella exigua, Gyroidinoides subzelandica, Reophax longicollis, Adercotryma glomeratum, Cystammina pauciloculata, Spiroplectammina biformis) prefer deeper waters with moderate organic carbon and dissolved oxygen. The information of the ecological niches of benthic foraminifera will help in environmental impact assessment and paleoecological studies.
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Affiliation(s)
- Syed Mohammad Saalim
- Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India; National Center for Polar and Ocean Research, Goa, India.
| | - Rajeev Saraswat
- Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India.
| | - Rajiv Nigam
- Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India
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Rostami MA, Frontalini F, Giordano P, Francescangeli F, Alves Martins MV, Dyer L, Spagnoli F. Testing the applicability of random forest modeling to examine benthic foraminiferal responses to multiple environmental parameters. Mar Environ Res 2021; 172:105502. [PMID: 34638002 DOI: 10.1016/j.marenvres.2021.105502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/25/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
The main environmental variables controlling benthic foraminiferal distributions were identified and used to assess their influence on ecological indices developed as predictors of Ecological Quality Status (EcoQS) in marine ecosystems. Gradient forest and random forest models were applied to assess the predictive value of a selection of abiotic (environmental) and biotic (foraminifera) variables in a costal marine area in the central Adriatic Sea (Italy). This approach yields evidence that the predictor variables sand, silt, Pollution Load Index, and TN have the greatest influence on the distribution of benthic foraminifera in this area. In addition, we identify thresholds for the most important environmental variables that influence ecological indices. These findings contribute to efforts to determine how to best improve sediment quality and environmental stability for marine conservation. Further application of these approaches represents a useful tool for policymakers to survey the diversity of marine organisms and to improve the ability to protect and restore marine ecosystems by identifying predictors of diversity and identifying key thresholds in these predictors.
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Affiliation(s)
- Masoud A Rostami
- Department of Biology, University of Nevada, Reno, Reno, NV, 89557, USA.
| | - Fabrizio Frontalini
- Department of Pure and Applied Sciences, Università degli Studi di Urbino "Carlo Bo", 61029, Urbino, Italy
| | - Patrizia Giordano
- Istituto di Scienze Polari, Consiglio Nazionale delle Ricerche, 40129, Bologna, Italy
| | - Fabio Francescangeli
- University of Hamburg, Institute for Geology, Centre for Earth System Research and Sustainability, Bundesstraße, 55, 20146, Hamburg, Germany
| | - Maria Virginia Alves Martins
- Rio de Janeiro State University (UERJ), R. São Francisco Xavier, 524, LabMicro 4037F, Maracanã, Rio de Janeiro, 20550-900, Brazil; Aveiro University, Department of Geosciences, GeoBioTec, Campus de Santiago, 3810-197, Aveiro, Portugal
| | - Lee Dyer
- Department of Biology, University of Nevada, Reno, Reno, NV, 89557, USA
| | - Federico Spagnoli
- Istituto per le Risorse Biologiche e le Biotecnologie Marine, Consiglio Nazionale delle Ricerche, 60125, Ancona, Italy; School of Science and Technology, Geology division, University of Camerino, 62032, Camerino, Italy
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Dubois A, Barras C, Pavard J, Donnay A, Béatrix M, Bouchet VMP. Distribution Patterns of Benthic Foraminifera in Fish Farming Areas (Corsica, France): Implications for the Implementation of Biotic Indices in Biomonitoring Studies. Water 2021; 13:2821. [DOI: 10.3390/w13202821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Corsican marine aquaculture is one of the highest contributors of fish production in France, which may result in environmental perturbations caused by organic matter (OM) accumulation under fish farms and impacting natural communities. This study aimed to (1) characterise the environmental conditions at two different fish farms, (2) monitor the response of benthic foraminiferal species to this activity, and (3) assess the accuracy of existing foraminiferal biotic indices. In 2017, sea floor sediment was sampled in transects from two Corsican fish farms for living foraminiferal and sedimentary analyses. Four indices were calculated and compared: exp(H′bc), Foram-AMBI, Foram Stress Index and TSI-Med. A significant increase in total organic carbon (TOC) has been shown, mainly below the fish cages. Communities were characterized by a shift from high density, opportunistic and tolerant species under the cages to lower densities and more sensitive species further away. According to their distribution patterns along the TOC gradient, we propose to update the ecological group classification of seven species to improve Foram-AMBI’s accuracy and sensitivity: Triloculina oblonga and Quinqueloculina lamarckiana to Ecological Group (EG) I; Rosalina bradyi to EGIII; and Bolivina dilatata, Bulimina aculeata and Quinqueloculina stalkeri to EGIV. We recommend prioritising the use of TSI-Med and Foram-AMBI with the updated list to assess ecological quality in coastal waters of the Mediterranean Sea.
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Boufafa M, Kadri S, Redder P, Bensouilah M. Occurrence and distribution of fecal indicators and pathogenic bacteria in seawater and Perna perna mussel in the Gulf of Annaba (Southern Mediterranean). Environ Sci Pollut Res Int 2021; 28:46035-46052. [PMID: 33884549 DOI: 10.1007/s11356-021-13978-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 04/13/2021] [Indexed: 06/12/2023]
Abstract
The identification of fecal contamination in coastal marine ecosystems is one of the main requirements for evaluation of potential risks to human health. The objective of this study was to investigate the occurrence and distribution of fecal indicators and pathogenic bacteria in seawaters and mussels collected monthly during a period of 1 year from four different sites in Northeastern Algeria (sites S1 to S4), through biochemical and molecular analyses. Our research is the first to use molecular analysis to unambiguously identify the potentially pathogenic bacteria present in Algerian Perna perna mussels. The obtained results revealed that the levels of fecal indicator bacteria (FIB) from both P. perna and seawater samples largely exceeded the permissible limits at S2 and S3. This is mainly related to their location close to industrial and coastal activity zones, which contain a mixture of urban, agricultural, and industrial pollutants. Besides, P. perna collected from all sites were severalfold more contaminated by FIB than seawater samples, primarily during the warm season of the study period. Biochemical and molecular analyses showed that isolated bacteria from both seawater and mussels were mainly potentially pathogenic species such as E. coli, Salmonella spp., Staphylococcus spp., Klebsiella spp., Pseudomonas spp., and Proteus spp.
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Affiliation(s)
- Mouna Boufafa
- Laboratory of Eco-biology for Marine Environment and Coastlines, Faculty of Science, Badji Moukhtar University, BP 12, 23000, Annaba, Algeria.
| | - Skander Kadri
- Laboratory of Eco-biology for Marine Environment and Coastlines, Faculty of Science, Badji Moukhtar University, BP 12, 23000, Annaba, Algeria
| | - Peter Redder
- Laboratoire de Microbiologie et Génétique Moléculaires, Centre de Biologie Intégrative, Université Paul Sabatier, 118 Route de Narbonne, 31062, Toulouse, France.
| | - Mourad Bensouilah
- Laboratory of Eco-biology for Marine Environment and Coastlines, Faculty of Science, Badji Moukhtar University, BP 12, 23000, Annaba, Algeria
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O’brien PAJ, Polovodova Asteman I, Bouchet VMP. Benthic Foraminiferal Indices and Environmental Quality Assessment of Transitional Waters: A Review of Current Challenges and Future Research Perspectives. Water 2021; 13:1898. [DOI: 10.3390/w13141898] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Transitional waters straddle the interface between marine and terrestrial biomes and, among others, include fjords, bays, lagoons, and estuaries. These coastal systems are essential for transport and manufacturing industries and suffer extensive anthropogenic exploitation of their ecosystem services for aquaculture and recreational activities. These activities can have negative effects on the local biota, necessitating investigation and regulation. As a result of this, EcoQS (ecological quality status) assessment has garnered great attention as an essential aspect of governmental bodies’ legislative decision-making process. Assessing EcoQS in transitional water ecosystems is problematic because these systems experience high natural variability and organic enrichment and often lack information about their pre-human impact, baseline, or “pristine” reference conditions, knowledge of which is essential to many commonly used assessment methods. Here, foraminifera can be used as environmental sentinels, providing ecological data such as diversity and sensitivity, which can be used as the basis for EcoQS assessment indices. Fossil shells of foraminifera can also provide a temporal aspect to ecosystem assessment, making it possible to obtain reference conditions from the study site itself. These foraminifera-based indices have been shown to correlate not only with various environmental stressors but also with the most common macrofaunal-based indices currently employed by bodies such as the Water Framework Directive (WFD). In this review, we firstly discuss the development of various foraminifera-based indices and address the challenge of how best to implement these synergistically to understand and regulate human environmental impact, particularly in transitional waters, which have historically suffered disproportionate levels of human impact or are difficult to assess with standard EcoQS methods. Further, we present some case studies to exemplify key issues and discuss potential solutions for those. Such key issues include, for example, the disparate performance of multiple indices applied to the same site and a proper assignment of EcoQS class boundaries (threshold values) for each index. Disparate aptitudes of indices to specific geomorphologic and hydrological regimes can be leveraged via the development of a site characteristics catalogue, which would enable the identification of the most appropriate index to apply, and the integration of multiple indices resulting in more representative EcoQS assessment in heterogenous transitional environments. In addition, the difficulty in assigning threshold values to systems without analogous unimpacted reference sites (a common issue among many transitional waters) can be overcome by recording EcoQS as an ecological quality ratio (EQR). Lastly, we evaluate the current status and future potential of an emerging field, genetic biomonitoring, focusing on how these new techniques can be used to increase the accuracy of EcoQS assessment in transitional systems by supplementing more established morphology-based methods.
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Bouchet VMP, Frontalini F, Francescangeli F, Sauriau PG, Geslin E, Martins MVA, Almogi-Labin A, Avnaim-Katav S, Di Bella L, Cearreta A, Coccioni R, Costelloe A, Dimiza MD, Ferraro L, Haynert K, Martínez-Colón M, Melis R, Schweizer M, Triantaphyllou MV, Tsujimoto A, Wilson B, Armynot du Châtelet E. Indicative value of benthic foraminifera for biomonitoring: Assignment to ecological groups of sensitivity to total organic carbon of species from European intertidal areas and transitional waters. Mar Pollut Bull 2021; 164:112071. [PMID: 33549924 DOI: 10.1016/j.marpolbul.2021.112071] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
This work contributes to the ongoing work aiming at confirming benthic foraminifera as a biological quality element. In this study, benthic foraminifera from intertidal and transitional waters from the English Channel/European Atlantic coast and the Mediterranean Sea were assigned to five ecological groups using the weighted-averaging optimum with respect to TOC of each species. It was however not possible to assign typical salt marsh species due to the presence of labile and refractory organic matter that hampers TOC characterization. Tests of this study species' lists with Foram-AMBI on two independent datasets showed a significant correlation between Foram-AMBI and TOC, confirming the strong relation between foraminifera and TOC. For one of the validation datasets, associated macrofaunal data were available and a significant correlation was found between the foraminiferal Foram-AMBI and the macrofaunal AMBI. The here proposed lists should be further tested with sensitivity-based indices in different European regional settings.
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Affiliation(s)
- Vincent M P Bouchet
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, Station Marine de Wimereux, F 59000 Lille, France.
| | - Fabrizio Frontalini
- Univ. Urbino Dipartimento di Scienze Pure e Applicate (DiSPeA), Università degli Studi di Urbino "Carlo Bo", Campus Scientifico Enrico Mattei, Località Crocicchia, 61029 Urbino, Italy
| | - Fabio Francescangeli
- University of Hamburg, Institute for Geology, Centre for Earth System Research and Sustainability, Bundesstraße, 5520146 Hamburg, Germany
| | - Pierre-Guy Sauriau
- La Rochelle Université, CNRS, Littoral Environnement et Sociétés, UMR 7266 LIENSs, 2 rue Olympe de Gouges, 17000 La Rochelle, France
| | - Emmanuelle Geslin
- UMR 6112 LPG-BIAF, Univ. Angers, Univ. Nantes, CNRS, 2 Bd Lavoisier, F 49000 Angers, France
| | - Maria Virginia Alves Martins
- Rio de Janeiro State University (UERJ), R. São Francisco Xavier, 524, Lab 1006, Maracanã, Rio de Janeiro 20550-900, Brazil; Aveiro University, Department of Geosciences, GeoBioTec, Campus de Santiago, 3810-197 Aveiro, Portugal
| | - Ahuva Almogi-Labin
- Geological Survey of Israel, Yesha'yahu Leibowitz 32, Jerusalem 9692100, Israel
| | | | - Letizia Di Bella
- Dipartimento di Scienze Della Terra, Sapienza Università di Roma, Italy
| | - Alejandro Cearreta
- Departamento de Geología, Universidad del País Vasco UPV/EHU, Apartado 644, 48080 Bilbao, Spain
| | - Rodolfo Coccioni
- Univ. Urbino Dipartimento di Scienze Pure e Applicate (DiSPeA), Università degli Studi di Urbino "Carlo Bo", Campus Scientifico Enrico Mattei, Località Crocicchia, 61029 Urbino, Italy
| | - Ashleigh Costelloe
- BioStratigraphic Associates (Trinidad) Limited, 113 Frederick Settlement, Old Southern Main Rd., Caroni, Trinidad and Tobago
| | - Margarita D Dimiza
- National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment, Panepistimioupolis, 15784 Athens, Greece
| | - Luciana Ferraro
- CNR, Institute of Marine Sciences, National Research Council of Italy, Calata Porta di Massa, Naples, Italy
| | - Kristin Haynert
- University of Göttingen, J.F. Blumenbach Institute of Zoology and Anthropology, Göttingen, Germany
| | - Michael Martínez-Colón
- Florida A&M University, School of the Environment, FSH Science Research Center, RM306B, 1515 South MLK Blvd, Tallahassee, FL 32307, USA
| | - Romana Melis
- Department of Mathematics and Geosciences, 34127 Trieste, Italy
| | - Magali Schweizer
- UMR 6112 LPG-BIAF, Univ. Angers, Univ. Nantes, CNRS, 2 Bd Lavoisier, F 49000 Angers, France
| | - Maria V Triantaphyllou
- National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment, Panepistimioupolis, 15784 Athens, Greece
| | - Akira Tsujimoto
- Faculty of Education, Shimane University, 1060 Nishikawatsucho, Matsue, Shimane 690-8504, Japan
| | - Brent Wilson
- Cedar Lodge, Maenygroes, Cei Newydd, Ceredigion, Wales SA45 9RL, UK
| | - Eric Armynot du Châtelet
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, F 59000 Lille, France
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