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Signa G, Tomasello A, Cilluffo G, Tramati CD, Mazzola A, Calvo S, Vizzini S. Does transplanted Posidonia oceanica act as a sink or source of trace elements? Ecological implications for restoring polluted coastal areas. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 359:121008. [PMID: 38703654 DOI: 10.1016/j.jenvman.2024.121008] [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: 02/16/2024] [Revised: 04/08/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
Despite the high potential of seagrass restoration to reverse the trend of marine ecosystem degradation, there are still many limitations, especially when ecosystems are severely degraded. In particular, it is not known whether restoring polluted ecosystems can lead to potentially harmful effects associated with contaminant remobilisation. Here, we aimed to investigate the role of P. oceanica transplanted from a pristine meadow to a polluted site (Augusta Bay, Italy, Mediterranean Sea) in two seasons of the year, as a sink or source of trace elements to the environment. The main results showed i) higher accumulation of chromium (Cr), copper (Cu) and total mercury (THg) in plants transplanted in summer than in winter, as well as an increase in Cr and THg in plants from sites with higher trace element loads; ii) an increase in leaf phenolics and a decrease in rhizome soluble carbohydrates associated with As and THg accumulation, suggesting the occurrence of defence strategies to cope with pollution stress; iii) a different partitioning of trace elements between below- and above-ground tissues, with arsenic (As) and Cr accumulating in roots, whereas Cu and THg in both roots and leaves. These results suggest that P. oceanica transplanted to polluted sites can act as both a sink and a source, sequestering trace elements in the below-ground tissues thus reducing their bioavailability, but also potentially remobilising them. However, the amount of trace elements potentially exported from P. oceanica to the environment through transfer into food webs via leaves and detritus appeared to be low under the specific conditions of the study site. Although further research into seagrass restoration of polluted sites would improve current knowledge to support effective ecosystem-based coastal management, the benefits of restoring polluted sites through seagrass transplantation appear to outweigh the potential costs of inaction over time.
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Affiliation(s)
- Geraldina Signa
- DiSTeM, Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123, Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Piazzale Flaminio 9, 00196, Rome, Italy
| | - Agostino Tomasello
- CoNISMa, National Inter-University Consortium for Marine Sciences, Piazzale Flaminio 9, 00196, Rome, Italy.
| | - Giovanna Cilluffo
- DiSTeM, Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123, Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Piazzale Flaminio 9, 00196, Rome, Italy
| | - Cecilia Doriana Tramati
- DiSTeM, Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123, Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Piazzale Flaminio 9, 00196, Rome, Italy
| | - Antonio Mazzola
- DiSTeM, Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123, Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Piazzale Flaminio 9, 00196, Rome, Italy
| | - Sebastiano Calvo
- DiSTeM, Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123, Palermo, Italy
| | - Salvatrice Vizzini
- DiSTeM, Department of Earth and Marine Sciences, University of Palermo, via Archirafi 18, 90123, Palermo, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Piazzale Flaminio 9, 00196, Rome, Italy
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Xu S, Kaldy JE, Zhang X, Yue S, Suonan Z, Zhou Y. Comparison of metals in eelgrass (Zostera marina L.) and the environment across the North Pacific Ocean: Environmental processes drive source delivery. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 343:123096. [PMID: 38070647 PMCID: PMC11025321 DOI: 10.1016/j.envpol.2023.123096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/26/2023]
Abstract
Seagrass beds play a critical role in biodiversity maintenance, serving as nursery habitats for fisheries, and aiding in carbon and sediment sequestration in the ecosystem. These habitats receive dissolved and particulate material inputs, like nutrients and heavy metals, affecting both plant health and the ecosystem. Eelgrass (Zostera marina L.), sediments, and water were randomly collected at twenty sites along the temperate North Pacific coasts of Asia and North America to assess heavy metals concentrations (Cr, Cu, Zn, Cd, and Pb). This aimed to understand heavy metal distribution and accumulation patterns in eelgrass tissues, revealing crucial factors influencing metal accumulation. The sampling included various areas, from pristine marine reserves to human-influenced zones, covering industrial, agricultural, and aquaculture regions, enabling a thorough analysis. This study's uniqueness lies in comparing heavy metal distributions in eelgrass tissues with sediments, uncovering unique accumulation patterns. Aboveground eelgrass tissues mainly accumulated Cd, Zn, and Cu, while belowground tissues stored Cr and Pb. Aboveground eelgrass tissues proved reliable in indicating Cd and Pb concentrations in sediments. However, the correlation between Cu, Zn, and Cr in eelgrass tissues and environmental concentrations seemed less direct, requiring further investigation into factors affecting metal accumulation in seagrass. Human activities are probable major contributors to heavy metal presence in Asian marine environments, whereas oceanographic processes serve as primary metal sources in North American Pacific estuaries. Critical discoveries emphasize the necessity for ongoing research on phytotoxic thresholds and in-depth studies on the complex connections between seagrass physiology and environmental metal concentrations. Understanding these dynamics is crucial for evaluating the broader impact of heavy metal pollution on coastal ecosystems and developing effective conservation measures.
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Affiliation(s)
- Shaochun Xu
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; CAS Engineering Laboratory for Marine Ranching, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Shandong Province Key Laboratory of Experimental Marine Biology, Qingdao, 266071, China
| | - James E Kaldy
- Pacific Ecological Systems Division, US EPA, 2111 SE Marine Science Center Dr., Newport, OR, 97365, USA
| | - Xiaomei Zhang
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; CAS Engineering Laboratory for Marine Ranching, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Shandong Province Key Laboratory of Experimental Marine Biology, Qingdao, 266071, China
| | - Shidong Yue
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; CAS Engineering Laboratory for Marine Ranching, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Shandong Province Key Laboratory of Experimental Marine Biology, Qingdao, 266071, China
| | - Zhaxi Suonan
- Department of Biological Sciences, Pusan National University, Buson, 46241, Republic of Korea
| | - Yi Zhou
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; CAS Engineering Laboratory for Marine Ranching, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Shandong Province Key Laboratory of Experimental Marine Biology, Qingdao, 266071, China.
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Varrica D, Tamburo E, Alaimo MG. Levels of trace elements in human hair samples of adolescents living near petrochemical plants. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:3779-3797. [PMID: 34698985 DOI: 10.1007/s10653-021-01124-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
The aim of the study is a comparative analysis to investigate human hair metal profiles of adolescents residing near petrochemical plants (Sicily, Italy). We selected the small town of Augusta, Gela, and Pace del Mela, and a control area made up of the towns characterized by low anthropogenic activity. Twenty trace elements were measured in samples of scalp hair from adolescents (11-14 years old) of both genders. Hair samples were cleaned using a rigorous cleaning method, mineralized, and processed for analyses by inductively coupled plasma-mass spectrometry (ICP-MS). In industrial sites, zinc was always the most abundant element, ranging from186 to 217 μg g-1. Following zinc, the elements Al, Ba, Cu, Fe, and Sr were in the range 1-20 μg g-1. The remaining elements had concentrations < 1 μg g-1. The comparison with adolescents living in suburban area highlighted that As, Ba, Mn, Sr, U, and V have the highest median concentrations in an industrial location. An industrial factor (As, Mn, Sr, U, and V) and an urban factor (Cd, Cr, Cu, Mo, Ni, and Sb) were distinguished by the multivariate statistical analysis between a cohort residing in urban and industrial areas. Statistically significant differences (Kruskal-Wallis test, p < 0.05) between the genders were found for Ba, Mn, Ni, Sr, and V in all industrial sites with median concentrations higher in females' hair than males'. The data confirm that the study areas are heavily affected by industrial and urban emissions of metals and metalloids, representing a potential hazard to the local population.
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Affiliation(s)
- Daniela Varrica
- Dipartimento di Scienze della Terra e del Mare (DiSTeM), via Archirafi 22, 90123, Palermo, Italy.
| | - Elisa Tamburo
- Dipartimento di Scienze della Terra e del Mare (DiSTeM), via Archirafi 22, 90123, Palermo, Italy
| | - Maria Grazia Alaimo
- Dipartimento di Scienze della Terra e del Mare (DiSTeM), via Archirafi 22, 90123, Palermo, Italy
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Yu Z, Liu E, Lin Q, Zhang Q, Yuan H, Zhang E, Shen J. Integrating indices based on different chemical extractions and bioaccumulation in Bellamya aeruginosa to assess metal pollution and ecological risk in sediment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 242:113853. [PMID: 35809396 DOI: 10.1016/j.ecoenv.2022.113853] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 06/17/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Various indices based on metal chemical data are used to evaluate pollution and ecological risk, but the consistency of the assessment results is usually unsatisfactory, and it is unclear if the ecological risk from sediment metals is accurately represented in in situ zoobenthos. Herein, the pollution and ecological risk associated with As, Cd, Cr, Cu, Ni, Pb and Zn in the sediments of two adjacent lakes (Datun (DT) and Changqiao (CQ)) were comprehensively evaluated by integrating metal concentrations, chemical forms and bioaccumulation in Bellamya aeruginosa (B. aeruginosa). The metal concentrations and chemical compositions varied widely in the sediments. Over 50% of the Cd, Pb and Zn in the sediments was present in bioavailable forms, followed by 28% of Cu and less than 25% of As, Cr and Ni. According to the enrichment factor (EF) and concentration enrichment ratio (CER) assessments, Cr and Ni were natural in origin, while the other metals were at minor to extremely high pollution levels, with average EFs of 1.5-77.6 and CERs of 1.1-113.4. The pollution levels for Cd, Cu and Pb from the EF and CER assessments were similar, while those for As and Zn were higher according to CER than EF (p = 0.05), likely due to the baseline underestimation associated with the potential diagenetic remobilization of bioavailable metals. The ecological risk index (Er), sediment quality guidelines (SQGs) and risk assessment code (RAC) showed a high eco-risk for Cd, while no similar risk was found for the other metals. By integrating risk indices with the chemical forms and pollution levels of metals, we deduced high eco-risks for As and Pb and moderate eco-risks for Cu and Zn in DT Lake and moderate eco-risks for As, Pb and Zn in CQ Lake. The other metals in the sediments of the two lakes presented low eco-risks. No significant positive correlations (p = 0.05) between metal accumulation in B. aeruginosa and the indices of pollution and eco-risk were observed except for the case of As, implying that measuring the metal concentrations in B. aeruginosa would not accurately characterize the metal pollution and ecological risk of sediments.
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Affiliation(s)
- Zhenzhen Yu
- College of Geography and Environment, Shandong Normal University, Ji'nan 250358, PR China; Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Enfeng Liu
- College of Geography and Environment, Shandong Normal University, Ji'nan 250358, PR China.
| | - Qi Lin
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Qinghui Zhang
- College of Geography and Environment, Shandong Normal University, Ji'nan 250358, PR China
| | - Hezhong Yuan
- School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, PR China
| | - Enlou Zhang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Ji Shen
- School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, PR China
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Hossain MB, Masum Z, Rahman MS, Yu J, Noman MA, Jolly YN, Begum BA, Paray BA, Arai T. Heavy Metal Accumulation and Phytoremediation Potentiality of Some Selected Mangrove Species from the World's Largest Mangrove Forest. BIOLOGY 2022; 11:biology11081144. [PMID: 36009771 PMCID: PMC9405028 DOI: 10.3390/biology11081144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 11/16/2022]
Abstract
Toxic metal pollution is a global issue, and the use of metal-accumulating plants to clean contaminated ecosystems is one of the most rapidly growing ecologically beneficial and cost-effective technologies. In this study, samples of sediment and three mangrove species (Excoecaria agallocha, Avicennia officinalis, Sonneratia apetala) were collected from the world’s largest mangrove forest (along the Northern Bay of Bengal Coast) with the aim of evaluating metal concentrations, contamination degrees, and phytoremediation potentiality of those plants. Overall, the heavy metals concentration in sediment ranged from Cu: 72.41−95.89 mg/kg; Zn: 51.28−71.20 mg/kg; Fe: 22,760−27,470 mg/kg; Mn: 80.37−116.37 mg/kg; Sr: 167.92−221.44 mg/kg. In mangrove plants, the mean concentrations were in the order of E. agallocha > A. officinalis > S. apetala. The mean (± SD) concentration of each metal in the plant tissue (root) was found following the descending order of Fe (737.37 ± 153.06) > Mn (151.13 ± 34.26) > Sr (20.98 ± 6.97) > Cu (16.12 ± 4.34) > Zn (11.3 ± 2.39) mg/kg, whereas, in the leaf part, the mean concentration (mg/kg) of each metal found in the order of Fe (598.75 ± 410.65) > Mn (297.27 ± 148.11) > Sr (21.40 ± 8.71) > Cu (14.25 ± 2.51) > Zn (12.56 ± 2.13). The contamination factor (CF) values for the studied metals were in the descending order of Cu > Sr > Zn > Fe > Mn. The values of Igeo (Geo-accumulation index) and CF showed that the area was unpolluted to moderately polluted by Zn, Fe, Mn, Cu and Sr. Enrichment factor (EF) values in both sampling stations portrayed moderate to minimum enrichment. Phytoremediation potentiality of the species was assessed by bio-concentration factor (BCF) and translocation factor (TF). BCF values showed less accumulation for most of the heavy metals (<1) except Mn which was highly accumulated in all mangrove plants. The translocation factor (TF) values depicted that most of the heavy metals were strongly accumulated in plant tissues (>1). However, the BCF value depicts that Mn was highly bioconcentrated in E. agallocha, but the translocation on leaves tissue were minimum, which reveals that E. agallocha is phytoextractor for Mn, and accumulated in root tissues. All the examined plants can be used as phytoextractors as they have bioconcentration factors <1 and translocation factors >1. However, A. officinalis is clearly more suitable for metal extraction than S. apetala and E. agallocha in terms of hyper-metabolizing capabilities.
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Affiliation(s)
- M. Belal Hossain
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh;
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia;
- Correspondence:
| | - Zobaer Masum
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh;
| | - M. Safiur Rahman
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh; (M.S.R.); (Y.N.J.); (B.A.B.)
| | - Jimmy Yu
- School of Engineering and Built Environment, Griffith University, Brisbane, QLD 4111, Australia;
| | - Md. Abu Noman
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China;
| | - Yeasmin N. Jolly
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh; (M.S.R.); (Y.N.J.); (B.A.B.)
| | - Bilkis A. Begum
- Chemistry Division, Atomic Energy Centre Dhaka (AECD), Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh; (M.S.R.); (Y.N.J.); (B.A.B.)
| | - Bilal Ahamad Paray
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Takaomi Arai
- Environmental and Life Sciences Programme, Faculty of Science, University Brunei Darussalam, Jala Tungku Link, Gadong BE1410, Brunei;
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Jian L, Zhang T, Lin L, Xiong J, Shi H, Wang J. Transfer and accumulation of trace elements in seawater, sediments, green turtle forage, and eggshells in the Xisha Islands, South China Sea. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:50832-50844. [PMID: 35239116 DOI: 10.1007/s11356-022-19354-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Chemical pollutants present a substantial threat to the survival of the green turtle (Chelonia mydas). In this study, the concentrations of 12 trace elements (TEs) in seawater, sediments, and green turtle forage and eggshells from the Xisha Islands in the South China Sea, along with their patterns of transfer and accumulation, were identified. The results revealed that the median TE concentrations in seawater and sediments were lower than the first-grade limit values of the national standard in China, indicating a low ecological risk. The concentrations (μg·g-1) of TEs in forage ranged from 0.05-0.69, 3.43-14.4, 157-2391, 27.9-124, 2.05-9.39, 0.30-9.78, 2.01-80.50, 0.18-5.76, 0.06-0.98, 2.00-18.4, 0.02-0.24, and 0.01-0.09 for Cr, Mn, Sr, Fe, Ni, Cu, Zn, Se, Cd, As, Pb, and Hg, respectively. Seawater, sediments, turtle forage, and eggshells exhibited different TE profiles, which were driven by Hg, Sr, Cr, and Pb in seawater and sediments; Fe and Ni in sediments; Cd and As in forage; and Zn, Se, and Cu in eggshells. The contents of Cu, Zn, and Se increased slightly with trophic level, indicating that they were transferred through dietary pathways. Although Cd and As appeared to bioaccumulate in green turtle forage, it was not transferred to their eggshells, which may be related to the excretion and metabolism process in the mother's body. Thus, eggshells may be a poor bioindicator for the exposure of female green turtles to these toxic elements.
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Affiliation(s)
- Li Jian
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, 571158, China
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine, Hainan Medical University, Haikou, 571199, China
| | - Ting Zhang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, 571158, China
| | - Liu Lin
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, 571158, China
| | - Jinfang Xiong
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, 571158, China
| | - Haitao Shi
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, 571158, China
| | - Jichao Wang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou, 571158, China.
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Méndez S, Ruepert C, Mena F, Cortés J. Accumulation of heavy metals (Cd, Cr, Cu, Mn, Pb, Ni, Zn) in sediments, macroalgae (Cryptonemia crenulata) and sponge (Cinachyrella kuekenthali) of a coral reef in Moín, Limón, Costa Rica: An ecotoxicological approach. MARINE POLLUTION BULLETIN 2021; 173:113159. [PMID: 34814000 DOI: 10.1016/j.marpolbul.2021.113159] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 10/11/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
Moín, on the Caribbean coast of Costa Rica, is a multi-use coastal zone with a variety of human activities that can cause metal pollution. With the purpose of assessing the current environmental burden due to heavy metal presence in the marine environment of Moín, and their bioaccumulation in organisms of the nearby coral reef, we determined seven metals in samples of bottom sediments, macroalgae (Cryptonemia crenulata) and sponge (Cinachyrella kuekenthali). The results were compared with samples from the southern Caribbean, an area with little human activity. Using ICP-MS, results showed a concentration range for sediments Mn > Cu > Zn > Cr > Ni > Pb > Cd, algae Mn > Cu > Zn > Ni > Cr > Pb > Cd and sponge Mn > Cu > Zn > Ni > Cr > Cd > Pb, relatively low concentrations overall and no differences observed between sites. Bioconcentration factor > 1 was determined for Cd, Cu, Ni and Zn, while concentrations in sediments were below the SQG thresholds. Our study provides the first data on metal concentrations in a macroalgae and a sponge from the Costa Rican Caribbean.
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Affiliation(s)
- Susana Méndez
- Instituto Regional de Estudios en Sustancias Tóxicas, Campus Omar Dengo, Universidad Nacional (IRET), 86-3000 Heredia, Costa Rica.
| | - Clemens Ruepert
- Instituto Regional de Estudios en Sustancias Tóxicas, Campus Omar Dengo, Universidad Nacional (IRET), 86-3000 Heredia, Costa Rica.
| | - Freylan Mena
- Instituto Regional de Estudios en Sustancias Tóxicas, Campus Omar Dengo, Universidad Nacional (IRET), 86-3000 Heredia, Costa Rica.
| | - Jorge Cortés
- Centro de Investigación en Ciencias del Mar y Limnología (CIMAR), Ciudad de la Investigación, Universidad de Costa Rica, 11501-2060 San José, Costa Rica.
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Wiech M, Djønne C, Kolding J, Kjellevold M, Ferter K. Targeted risk assessment of mercury exposure of recreational fishers: Are nephrops fishers in Norway at risk? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:50316-50328. [PMID: 33956315 PMCID: PMC8445859 DOI: 10.1007/s11356-021-14093-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Recreational fishers often consume their catch, which may expose them to environmental contaminants. However, targeted risk assessment for exceeding the tolerable weekly intake (TWI) of a specific contaminant is often lacking, as specific data on the extent of fishing, consumption rates, and contamination of the caught seafood is needed. This study examined recreational fishing for nephrops (Nephrops norvegicus) at several different locations in Western Norway to identify important risk factors. The combination of a field survey to examine actual catches, interviews of recreational fishers about their seafood eating habits, and the analysis of total mercury (Hg, as a proxy for methylmercury (MeHg)) in recreationally captured nephrops allowed to conduct a targeted risk assessment. Recreational fishers consumed on average seven nephrops per meal, and 73% of the fishers ate nephrops once a month or more. The average Hg concentrations in nephrops were below the legal maximum level (100 ± 50 μg/kg wet weight (mean ± SD)). Hg concentrations in female nephrops were significantly higher than in males at the same size, and differed significantly between locations. The recreational fishers in this study were not at risk of exceeding the TWI for MeHg from consuming nephrops only; however, there is a general risk of exceeding TWI for MeHg as 70% of the fishers reported a frequent consumption of fish for dinner. Targeted risk assessments on recreational fishers may reveal particularly vulnerable populations where national dietary surveys may miss the highest seafood consumers.
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Affiliation(s)
- Martin Wiech
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817, Bergen, Norway.
| | - Christine Djønne
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817, Bergen, Norway
| | - Jeppe Kolding
- University of Bergen, P.O. Box 7800, NO-5020, Bergen, Norway
| | - Marian Kjellevold
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817, Bergen, Norway
| | - Keno Ferter
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817, Bergen, Norway
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Rathika R, Khalifa AYZ, Srinivasan P, Praburaman L, Kamala-Kannan S, Selvankumar T, Kim W, Govarthanan M. Effect of citric acid and vermi-wash on growth and metal accumulation of Sorghum bicolor cultivated in lead and nickel contaminated soil. CHEMOSPHERE 2020; 243:125327. [PMID: 31733538 DOI: 10.1016/j.chemosphere.2019.125327] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/31/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
The aim of the present study is to assess the influence of vermi-wash (VW) and citric acid (CA) on Sorghum bicolor growth and phytoaccumulation of lead (Pb) and nickel (Ni) contaminated soil. The biomass of the S. bicolor has been enhanced by the addition of VW (24 and 26%) and CA (11 and 9%) in Pb and Ni contaminated soil, respectively. The VW treatment showed enhanced shoot and root lengths and chlorophyll concentrations compared to CA. The shoot anatomic structure showed an accumulation of Pb and Ni were positively impacted by the amendment of VW and CA. In addition, VW treatment showed enhanced antioxidant enzymes activity (140, 125 and 152 U/mg of CAT, SOD and POD). Further, the plants grown in Pb contaminated soil treated with VW showed enhanced Rubisco activity of 1.49 U/ml, whereas, CA treatment showed 1.23 U/ml of Rubisco. It has been observed that the VW showed as a potential chelator as well as plant beneficial formulation for the enhanced phyto-remediation of Pb and Ni.
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Affiliation(s)
- R Rathika
- PG & Research Department of Biotechnology, Mahendra Arts and Science College (Autonomous), Kalippatti, Namakkal, 637501, Tamil Nadu, India
| | - Ashraf Y Z Khalifa
- Biological Sciences Department, College of Science, King Faisal University, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, University of Beni-Suef, Beni-Suef, Egypt
| | - P Srinivasan
- PG & Research Department of Biotechnology, Mahendra Arts and Science College (Autonomous), Kalippatti, Namakkal, 637501, Tamil Nadu, India
| | - L Praburaman
- School of Mineral Processing and Bio Engineering, Central South University, 932 South Lushan, Hunan, 410083, PR China
| | - S Kamala-Kannan
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, 54596, South Korea
| | - T Selvankumar
- PG & Research Department of Biotechnology, Mahendra Arts and Science College (Autonomous), Kalippatti, Namakkal, 637501, Tamil Nadu, India.
| | - Woong Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea.
| | - M Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea.
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10
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Wiech M, Frantzen S, Duinker A, Rasinger JD, Maage A. Cadmium in brown crab Cancer pagurus. Effects of location, season, cooking and multiple physiological factors and consequences for food safety. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:134922. [PMID: 31759709 DOI: 10.1016/j.scitotenv.2019.134922] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/20/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
Brown crab Cancer pagurus is appreciated as seafood in several European countries. However, cadmium levels in crabs can be elevated and their consumption may pose a hazard for human health. To assess if cadmium poses a threat to food safety in Norway, crabs were sampled at two different locations along the Norwegian coast: one in the South of Norway and one in the North of Norway. Cadmium levels were determined in different tissues (claw meat, hepatopancreas and inner meat). To highlight specific risk factors for cadmium, the concentration of cadmium was related to different exogenous (location, cooking and season) and physiological (size, sex, moulting stage, gonad maturation stage, condition) factors. The results confirmed previous findings of much higher cadmium levels in brown crab sampled in the North of Norway compared to the South. Cooking of crabs further led to higher concentrations in claw meat. The effect of season on cadmium levels was different in the North and South and no clear patterns could be identified, probably due to a high inter-individual variation in cadmium levels. Size showed a correlation with the total amount of cadmium for crabs in the North indicating an accumulation of cadmium over time; together with a slower growth, this may lead to the higher cadmium levels, observed in the crabs from Northern Norway. The risk connected to cadmium exposure when consuming brown crab mainly depends on the consumption pattern, the parts of the crab consumed and the origin of the crab. Regardless of origin, the consumption of claw meat does not display a consumer health risk. However, the consumption of meals consisting of inner meat only and inner meat of brown crab from Northern Norway may pose a health risk.
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Affiliation(s)
- Martin Wiech
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway; University of Bergen, P.O. Box 7800, NO-5020 Bergen, Norway.
| | - Sylvia Frantzen
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway.
| | - Arne Duinker
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway.
| | | | - Amund Maage
- Institute of Marine Research, P.O. Box 1870, Nordnes, NO-5817 Bergen, Norway; University of Bergen, P.O. Box 7800, NO-5020 Bergen, Norway.
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11
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Lee G, Suonan Z, Kim SH, Hwang DW, Lee KS. Heavy metal accumulation and phytoremediation potential by transplants of the seagrass Zostera marina in the polluted bay systems. MARINE POLLUTION BULLETIN 2019; 149:110509. [PMID: 31421565 DOI: 10.1016/j.marpolbul.2019.110509] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 07/26/2019] [Accepted: 08/07/2019] [Indexed: 05/09/2023]
Abstract
Although seagrasses can incorporate heavy metals from the marine environment, few studies have been conducted on heavy metal uptake and phytoremediation potential by seagrass transplants in the heavy metal contaminated sediments. Zostera marina shoots were transplanted in two polluted bay systems on Korean coasts to evaluate the heavy metal contaminations in sediments and the possibility of using Z. marina transplants as a bioindicator and phytoremediation agent. The major concentrated metals in sediments were As, Cu, Fe, and Pb in Jaran Bay, and Cd, Co, Zn, and Hg in Onsan Bay. The Co, Zn, Pb, and Hg concentrations in Z. marina tissues reflected the sediment heavy metal concentrations, and thus the tissue heavy metal concentrations may be used as bio-indicators of the metal contaminations. Since Z. marina transplants accumulated a great amount of heavy metals in their tissues, they may have the phytoremediation potential for the heavy metal contaminated sediments.
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Affiliation(s)
- Garam Lee
- Department of Biological Sciences, Pusan National University, Busan 46241, Republic of Korea; Marine Environment Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Zhaxi Suonan
- Department of Biological Sciences, Pusan National University, Busan 46241, Republic of Korea
| | - Seung Hyeon Kim
- Department of Biological Sciences, Pusan National University, Busan 46241, Republic of Korea
| | - Dong-Woon Hwang
- Marine Environment Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Kun-Seop Lee
- Department of Biological Sciences, Pusan National University, Busan 46241, Republic of Korea.
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12
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Santisi S, Catalfamo M, Bonsignore M, Gentile G, Di Salvo E, Genovese M, Mahjoubi M, Cherif A, Mancini G, Hassanshahian M, Pioggia G, Cappello S. Biodegradation ability of two selected microbial autochthonous consortia from a chronically polluted marine coastal area (Priolo Gargallo, Italy). J Appl Microbiol 2019; 127:618-629. [PMID: 30848509 DOI: 10.1111/jam.14246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 02/22/2019] [Accepted: 02/25/2019] [Indexed: 11/29/2022]
Abstract
The aims of this study were: (i) the characterization of the structure of the indigenous microbial community associated with the sediments under study; (ii) the isolation and characterization of microbial consortia able to degrade the aged hydrocarbons contaminating the sediments, and (iii) the assessment of related biodegradation capability of selected consortia. Samples of surface sediments were collected in Priolo Gargallo harbour (Sicily, Italy). The samples were analysed for physical, chemical (GC-FID analysis) and microbiological characteristics (qualitative (16S rDNA clone library) and quantitative (DAPI, CFU and MPN count) analysis). The sediment samples were used for the selection of two microbial consortia (indicated as PSO and PSM) with high biodegradation capacity for crude oil (∼95%) and PAHs (∼63%) respectively. Genetic analysis showed that Alcanivorax and Cycloclasticus were the dominant genera in both the PSO and PSM consortia. Oil-polluted environments naturally develop an elevated biorecovery potential. The presence of a highly specialized microbial flora (adapted to support the contamination) and their stimulation through favourable induced conditions provides a promising recovery strategy. The chance to identify and select indigenous bacteria and/or consortia with a high biodegradation capacity is fundamental for the development and optimization of bioaugmentation strategies especially for those concerning in situ applications.
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Affiliation(s)
- S Santisi
- Institute for Biological Resources and Marine Biotechnology (IRBIM)-CNR of Messina, Messina, Italy.,Institute of Applied Sciences & Intelligent Systems "Eduardo Caianiello" (ISASI)-CNR of Messina, Messina, Italy
| | - M Catalfamo
- Institute for Biological Resources and Marine Biotechnology (IRBIM)-CNR of Messina, Messina, Italy
| | - M Bonsignore
- Faculty of Biological Sciences, University of Messina, Messina, Italy
| | - G Gentile
- Institute for Biological Resources and Marine Biotechnology (IRBIM)-CNR of Messina, Messina, Italy
| | - E Di Salvo
- Institute for Biological Resources and Marine Biotechnology (IRBIM)-CNR of Messina, Messina, Italy.,Institute of Applied Sciences & Intelligent Systems "Eduardo Caianiello" (ISASI)-CNR of Messina, Messina, Italy
| | - M Genovese
- Institute for Biological Resources and Marine Biotechnology (IRBIM)-CNR of Messina, Messina, Italy
| | - M Mahjoubi
- Higher Institute for Biotechnology - University of Manouba Biotechpole of Sidi Thabet, Ariana, Tunisia
| | - A Cherif
- Higher Institute for Biotechnology - University of Manouba Biotechpole of Sidi Thabet, Ariana, Tunisia
| | - G Mancini
- Dep. "Ingegneria Industriale", University of Catania, Catania, Italy
| | - M Hassanshahian
- Dep."Biology", Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
| | - G Pioggia
- Institute of Applied Sciences & Intelligent Systems "Eduardo Caianiello" (ISASI)-CNR of Messina, Messina, Italy
| | - S Cappello
- Institute for Biological Resources and Marine Biotechnology (IRBIM)-CNR of Messina, Messina, Italy.,Institute of Applied Sciences & Intelligent Systems "Eduardo Caianiello" (ISASI)-CNR of Messina, Messina, Italy
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13
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Signa G, Calizza E, Costantini ML, Tramati C, Sporta Caputi S, Mazzola A, Rossi L, Vizzini S. Horizontal and vertical food web structure drives trace element trophic transfer in Terra Nova Bay, Antarctica. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 246:772-781. [PMID: 30623833 DOI: 10.1016/j.envpol.2018.12.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 12/21/2018] [Accepted: 12/22/2018] [Indexed: 05/24/2023]
Abstract
Despite a vast amount of literature has focused on trace element (TE) contamination in Antarctica during the last decades, the assessment of the main pathways driving TE transfer to the biota is still an overlooked issue. This limits the ability to predict how variations in sea-ice dynamics and productivity due to climate change will affect TE allocation in the food web. Here, food web structure of Tethys Bay (Terra Nova Bay, Ross Sea, Antarctica) was first characterised by analysing carbon and nitrogen stable isotopes (δ13C, δ15N) in organic matter sources (sediment and planktonic, benthic and sympagic primary producers) and consumers (zooplankton, benthic invertebrates, fish and birds). Diet and trophic position were also characterised using Bayesian mixing models. Then, relationships between stable isotopes, diet and TEs (Cd, Cr, Co, Cu, Hg, Ni, Pb and V) were assessed in order to evaluate if and how horizontal (organic matter pathways) and vertical (trophic position) food web features influence TE transfer to the biota. Regressions between log[TE] and δ13C revealed that the sympagic pathway drives accumulation of V in primary consumers and Cd and Hg in secondary consumers, and that a coupled benthic/pelagic pathway drives Pb transfer to all consumers. Regressions between log[TE] and δ15N showed that only Hg biomagnifies across trophic levels, while all the others TEs showed a biodilution pattern, consistent with patterns observed in temperate food webs. Although the Cd behavior needs further investigations, the present findings provide new insights about the role of basal sources in the transfer of TEs in polar systems. This is especially important nowadays in light of the forecasted trophic changes potentially resulting from climate change-induced modification of sea-ice dynamics.
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Affiliation(s)
- Geraldina Signa
- Department of Earth and Marine Sciences, University of Palermo, Via Archirafi 18, 90123, Palermo, Italy; CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196, Rome, Italy
| | - Edoardo Calizza
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196, Rome, Italy; Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy.
| | - Maria Letizia Costantini
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196, Rome, Italy; Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
| | - Cecilia Tramati
- Department of Earth and Marine Sciences, University of Palermo, Via Archirafi 18, 90123, Palermo, Italy
| | - Simona Sporta Caputi
- Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
| | - Antonio Mazzola
- Department of Earth and Marine Sciences, University of Palermo, Via Archirafi 18, 90123, Palermo, Italy; CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196, Rome, Italy
| | - Loreto Rossi
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196, Rome, Italy; Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
| | - Salvatrice Vizzini
- Department of Earth and Marine Sciences, University of Palermo, Via Archirafi 18, 90123, Palermo, Italy; CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196, Rome, Italy
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14
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Annabi A, Bardelli R, Vizzini S, Mancinelli G. Baseline assessment of heavy metals content and trophic position of the invasive blue swimming crab Portunus segnis (Forskål, 1775) in the Gulf of Gabès (Tunisia). MARINE POLLUTION BULLETIN 2018; 136:454-463. [PMID: 30509829 DOI: 10.1016/j.marpolbul.2018.09.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 09/18/2018] [Indexed: 06/09/2023]
Abstract
This study provides a baseline assessment of cadmium, copper, iron, manganese, lead, and zinc concentrations in muscles, gills, and exoskeleton of the Lessepsian blue swimming crab Portunus segnis captured in the Gulf of Gabès (Southern Mediterranean Sea, Tunisia) in November 2015. Furthermore, the species' trophic position is estimated using CN stable isotope analysis. The exoskeleton showed the lowest metal contents; in soft tissues, the essential Cu, Fe, and Zn and the non-essential Cd, Mn, and Pb showed the highest and lowest concentrations, respectively. The crab was characterized by a trophic position of 3.32, confirming its carnivorous trophic habits. Compared with literature data on invertebrate and fish species from the same area, Cd and Pb resulted remarkably low in the crab's soft tissues, while a food web-scale dilution effect was indicated. The need of a comprehensive assessment of the ecological impact of Portunus segnis in invaded Mediterranean waters is discussed.
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Affiliation(s)
- Ali Annabi
- Ecologie de la faune terrestre UR17ES44, Département des Sciences de la Vie, Faculté des Sciences de Gabès, Université de Gabès, Tunisie
| | - Roberta Bardelli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy
| | - Salvatrice Vizzini
- Department of Earth and Marine Sciences, University of Palermo, 90133 Palermo, Italy; CoNISMa, 00196 Roma, Italy
| | - Giorgio Mancinelli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; CNR - ISMAR, 71010 Lesina, FG, Italy; CoNISMa, 00196 Roma, Italy.
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15
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Catania V, Cappello S, Di Giorgi V, Santisi S, Di Maria R, Mazzola A, Vizzini S, Quatrini P. Microbial communities of polluted sub-surface marine sediments. MARINE POLLUTION BULLETIN 2018; 131:396-406. [PMID: 29886964 DOI: 10.1016/j.marpolbul.2018.04.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 03/08/2018] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
Microbial communities of coastal marine sediment play a key role in degradation of petroleum contaminants. Here the bacterial and archaeal communities of sub-surface sediments (5-10 cm) of the chronically polluted Priolo Bay (eastern coast of Sicily, Italy), contaminated mainly by n-alkanes and biodegraded/weathered oils, were characterized by cultural and molecular approaches. 16S-PCR-DGGE analysis at six stations, revealed that bacterial communities are highly divergent and display lower phylogenetic diversity than the surface sediment; sub-surface communities respond to oil supplementation in microcosms with a significant reduction in biodiversity and a shift in composition; they retain high biodegradation capacities and host hydrocarbon (HC) degraders that were isolated and identified. HC-degrading Alfa, Gamma and Epsilon proteobacteria together with Clostridia and Archaea are a common feature of sub-surface communities. These assemblages show similarities with that of subsurface petroleum reservoirs also characterized by the presence of biodegraded and weathered oils where anaerobic or microaerophilic syntrophic HC metabolism has been proposed.
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Affiliation(s)
- Valentina Catania
- Dept. of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
| | - Simone Cappello
- Institute for Coastal Marine Environment (IAMC)-CNR of Messina, Messina, Italy
| | - Vincenzo Di Giorgi
- Dept. of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
| | - Santina Santisi
- Institute for Coastal Marine Environment (IAMC)-CNR of Messina, Messina, Italy
| | - Roberta Di Maria
- Dept. of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
| | - Antonio Mazzola
- Dept. of Earth and Marine Sciences (DISTEM) University of Palermo, Palermo, Italy; Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Roma, Italy
| | - Salvatrice Vizzini
- Dept. of Earth and Marine Sciences (DISTEM) University of Palermo, Palermo, Italy; Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Roma, Italy
| | - Paola Quatrini
- Dept. of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy.
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