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Casella N, Careddu G, Calizza E, Sporta Caputi S, Rossi L, Belluscio A, Ardizzone G, Calcagnile L, Quarta G, D'Elia M, Costantini ML. Increasing nutrient inputs over the last 500 years in an Italian low-impacted seagrass meadow. MARINE POLLUTION BULLETIN 2022; 174:113298. [PMID: 34995890 DOI: 10.1016/j.marpolbul.2021.113298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Posidonia oceanica is a seagrass endemic to the Mediterranean and it has been widely used as a bioindicator. We studied the layers of a 500-year-old matte using a multiproxy approach (δ13C, δ15N, 14C and C and N concentrations in seagrass debris) in order to evaluate the potential of P. oceanica as a long-term environmental indicator of N pollution and CO2 emissions. From 1581 to 1800, accumulation rate was ca. 0.35 cm year-1, while in the last 100 years it has amounted to ca. 0.51 cm year-1. We observed increasing δ15N values with height in the vertical matte profile, indicating an increase in anthropogenic organic N inputs over time. In contrast, no clear trend in the δ13C values was observed. This study reconstructs the long-term impact of human activities on a seagrass meadow located off the Italian coast, yielding long-term background information that can help managers to implement efficient plans.
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Affiliation(s)
- Nicolò Casella
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Giulio Careddu
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy.
| | - Edoardo Calizza
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
| | - Simona Sporta Caputi
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
| | - Loreto Rossi
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
| | - Andrea Belluscio
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | | | - Lucio Calcagnile
- CEDAD (CEnter of Applied Physics, DAting and Diagnostics), Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | - Gianluca Quarta
- CEDAD (CEnter of Applied Physics, DAting and Diagnostics), Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | - Marisa D'Elia
- CEDAD (CEnter of Applied Physics, DAting and Diagnostics), Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Lecce, Italy
| | - Maria Letizia Costantini
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy; CoNISMa, National Inter-University Consortium for Marine Sciences, Rome, Italy
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2
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Traceability and Authentication of Manila Clams from North-Western Adriatic Lagoons Using C and N Stable Isotope Analysis. Molecules 2021; 26:molecules26071859. [PMID: 33806097 PMCID: PMC8037060 DOI: 10.3390/molecules26071859] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 11/17/2022] Open
Abstract
In the Adriatic lagoons of northern Italy, manila clam (Ruditapes philippinarum) farming provides important socio-economic returns and local clams should be registered with the Protected Designations of Origin scheme. Therefore, there is a need for the development of rapid, cost-effective tests to guarantee the origin of the product and to prevent potential fraud. In this work, an elemental analysis (EA) coupled with isotope ratio mass spectrometry (IRMS) was employed to identify the isotopic fingerprints of clams directly collected onsite in three Adriatic lagoons and bought at a local supermarket, where they exhibited certification. In particular, a multivariate analysis of C/N, δ13C and δ15N in manila clam tissues as well as δ13C in shells and Δ13C (calculated as δ13Cshell–δ13Ctissues) seems a promising approach for tracking the geographical origin of manila clams at the regional scale.
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3
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Costantini ML, Agah H, Fiorentino F, Irandoost F, Trujillo FJL, Careddu G, Calizza E, Rossi L. Nitrogen and metal pollution in the southern Caspian Sea: a multiple approach to bioassessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:9898-9912. [PMID: 33156502 PMCID: PMC7884576 DOI: 10.1007/s11356-020-11243-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 10/12/2020] [Indexed: 05/09/2023]
Abstract
The Caspian Sea hosts areas of high ecological value as well as industrial, leisure, and agricultural activities that dump into the water body different kinds of pollutants. In this complex context, a proper description of the origin and potential sources of pollution is necessary to address management and mitigation actions aimed at preserving the quality of the water resource and the integrity of the ecosystems. Here, we aimed at detecting sources of both nitrogen inputs, by N stable isotope analysis of macroalgae, and metals in macroalgae and sediments in two highly anthropized coastal stretches at the Iranian side of the Caspian Sea. Sampling was done near the mouth of rivers and canals draining agricultural and urbanized areas. In the westernmost waters, facing a port city, low macroalgal δ15N signatures indicated industrial fertilizers as the principal source of pollution. By contrast, in the central coastal waters, facing touristic areas, the high macroalgal δ15N indicated N inputs from wastewaters. Here the lowest dissolved oxygen concentrations in waters were associated with excess dissolved inorganic nitrogen. Metal concentrations varied largely in the study areas and were lower in macroalgae than in sediments. Localized peaks of Pb and Zn in sediments were observed in the central coastal sites as probable byproducts of mining activity transported downstream. By contrast, Cr and Ni concentrations were high in all sampling sites, thus potentially representing hazardous elements for marine biota. Overall, macroalgal δ15N coupled with metal analysis in macroalgae and sediments was useful for identifying the main sources of pollution in these highly anthropized coastal areas. This double approach in comprehensive monitoring programs could thus effectively inform stakeholders on major environmental threats, allowing targeted management measures.
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Affiliation(s)
- Maria Letizia Costantini
- Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
- National Inter-University Consortium for Marine Sciences (CoNISMa), Piazzale Flaminio 9, 00196, Rome, Italy
| | - Homira Agah
- Iranian National Institute for Oceanography and Atmospheric Sciences (INIOAS), No. 3, Etemadzadeh St., Fatemi Ave, Tehran, 1411813389, Iran
| | - Federico Fiorentino
- Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
| | - Farnaz Irandoost
- Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
| | | | - Giulio Careddu
- Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
| | - Edoardo Calizza
- Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy.
- National Inter-University Consortium for Marine Sciences (CoNISMa), Piazzale Flaminio 9, 00196, Rome, Italy.
| | - Loreto Rossi
- Department of Environmental Biology, Sapienza University of Rome, Via dei Sardi 70, 00185, Rome, Italy
- National Inter-University Consortium for Marine Sciences (CoNISMa), Piazzale Flaminio 9, 00196, Rome, Italy
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4
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Biomonitoring of Heavy Metals: The Unexplored Role of Marine Sessile Taxa. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11020580] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Coastal areas are known to receive significant anthropogenic inputs, mainly deriving from metropolitan areas, industries, and activities related to tourism. Among these inputs, some trace elements are listed as priority pollutants in the European Water Framework Directive, due to their ability to bioaccumulate in organisms. Many studies have been conducted on heavy metals (HMs) accumulation and on their possible effects on different edible marine species. While the most studied sessile organisms are bivalves, in the current review, we focus our attention on other sessile taxa (sponges, cnidarians, bryozoans, polychaetes, cirripeds, and tunicates), proposed as bioindicators in coastal shallow waters. Although their potential as bioindicator tools has been repeatedly highlighted in the literature, these organisms are still poorly investigated and considered for monitoring. In this context, we analyze the available literature about this topic, in order to summarize the current knowledge and identify possible applications of these organisms in a bioremediation scenario.
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Signa G, Andolina C, Tomasello A, Mazzola A, Vizzini S. δ 15N in deployed macroalgae as a tool to monitor nutrient input driven by tourism activities in Mediterranean islands. MARINE POLLUTION BULLETIN 2020; 159:111504. [PMID: 32758796 DOI: 10.1016/j.marpolbul.2020.111504] [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: 03/12/2020] [Revised: 07/20/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
Mediterranean Sea is among the world's leading tourist destinations; however, the sharp increase in tourists during the high season may affect coastal seawater. The main aim of this study was to evaluate the occurrence and temporal variation of anthropogenic nutrients in coastal seawater in relation to tourist flows in three Mediterranean islands (Cyprus, Sicily and Rhodes), through short-term macroalgae deployments, coupled with δ15N analysis and GIS mapping. In all islands, an overall increase in macroalgae δ15N occurred over the deployment carried out in August in the tourist sites, suggesting the presence of anthropogenic nutrients. Decreasing δ15N values occurred at increasing distance from the coastline in two out of the three islands (Cyprus and Sicily). This study revealed the usefulness of the approach used in the assessment of tourism impact in terms of trophic enrichment and its potential to support competent authorities for the development of sustainable coastal management plans.
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Affiliation(s)
- Geraldina Signa
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Rome, Italy; DISTEM, Dipartimento di Scienze della Terra e del Mare, Università degli Studi di Palermo, PA, Italy
| | - Cristina Andolina
- DISTEM, Dipartimento di Scienze della Terra e del Mare, Università degli Studi di Palermo, PA, Italy.
| | - Agostino Tomasello
- DISTEM, Dipartimento di Scienze della Terra e del Mare, Università degli Studi di Palermo, PA, Italy
| | - Antonio Mazzola
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Rome, Italy; DISTEM, Dipartimento di Scienze della Terra e del Mare, Università degli Studi di Palermo, PA, Italy
| | - Salvatrice Vizzini
- CoNISMa, Consorzio Nazionale Interuniversitario per le Scienze del Mare, Rome, Italy; DISTEM, Dipartimento di Scienze della Terra e del Mare, Università degli Studi di Palermo, PA, Italy
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6
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Changing Isotopic Food Webs of Two Economically Important Fish in Mediterranean Coastal Lakes with Different Trophic Status. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10082756] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Transitional waters are highly productive ecosystems, providing essential goods and services to the biosphere and human population. Human influence in coastal areas exposes these ecosystems to continuous internal and external disturbance. Nitrogen-loads can affect the composition of the resident community and the trophic relationships between and within species, including fish. Based on carbon (δ13C) and nitrogen (δ15N) stable isotope analyses of individuals, we explored the feeding behaviour of two ecologically and economically important omnivorous fish, the eel Anguilla anguilla and the seabream Diplodus annularis, in three neighbouring lakes characterised by different trophic conditions. We found that A. anguilla showed greater generalism in the eutrophic lake due to the increased contribution of basal resources and invertebrates to its diet. By contrast, the diet of D. annularis, which was mainly based on invertebrate species, became more specialised, focusing especially on polychaetes. Our results suggest that changes in macroinvertebrate and fish community composition, coupled with anthropogenic pressure, affect the trophic strategies of high trophic level consumers such as A. anguilla and D. annularis. Detailed food web descriptions based on the feeding choices of isotopic trophospecies (here Isotopic Trophic Units, ITUs) enable identification of the prey taxa crucial for the persistence of omnivorous fish stocks, thus providing useful information for their management and habitat conservation.
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7
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Calizza E, Favero F, Rossi D, Careddu G, Fiorentino F, Sporta Caputi S, Rossi L, Costantini ML. Isotopic biomonitoring of N pollution in rivers embedded in complex human landscapes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 706:136081. [PMID: 31862596 DOI: 10.1016/j.scitotenv.2019.136081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 05/24/2023]
Abstract
The dynamic and hierarchical structure of rivers, together with disruption of the natural river continuum by human activities, makes it difficult to identify and locate sources of nutrient pollution affecting receiving waters and observe its dispersion, thus impairing monitoring efforts. The identification of reliable indicators of anthropogenic nitrogen inputs in catchments is therefore key to achieving effective management of polluted rivers. We tested the capacity of N isotopic signatures (δ15N) of epilithon and snails to provide useful indications of organic and inorganic anthropogenic N inputs in three Mediterranean rivers differing in terms of surrounding land use and physicochemical conditions. We used a combined approach based on (i) analysis of nutrient concentrations in water, (ii) CORINE land cover classification and drainage patterns in catchments and (iii) isotopic analysis of river biota to verify whether isotopic variations were indicative of anthropic activities in the watershed, the associated alteration of water quality, and the consequent impact on snail abundance and diversity. Variation in the δ15N of epilithon within and between rivers reflected localised and diffuse N inputs from inorganic and organic sources. Negative epilithon δ15N values (<0‰) indicated inorganic pollution from agriculture. Values between 4‰ and 8‰ and those above 8‰ respectively indicated moderate organic pollution from urban areas, and high organic pollution, mostly from waste waters. The diversity and abundance of snails decreased with increasing water pollution. While their isotopic variations reflected between-river differences, they failed to indicate within-river variations in anthropogenic N inputs, since the proportion of epilithon in their diet varied along the rivers. Concluding, epilithon was a reliable indicator of anthropogenic N sources across a wide range of nutrient concentrations and anthropogenic inputs, and the proposed approach allowed us to determine the nature of nitrogen pollutants, their sources, location and dispersion along rivers embedded in complex human landscapes.
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Affiliation(s)
- E Calizza
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa, piazzale Flaminio 9, 00196 Rome, Italy
| | - F Favero
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - D Rossi
- CNR-Water Research Institute, Research Area RM1, via Salaria km 29.300 C.P.10, 00015 Monterotondo, RM, Italy
| | - G Careddu
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - F Fiorentino
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - S Sporta Caputi
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy.
| | - L Rossi
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa, piazzale Flaminio 9, 00196 Rome, Italy
| | - M L Costantini
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa, piazzale Flaminio 9, 00196 Rome, Italy
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8
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Samanta P, Shin S, Jang S, Song YC, Oh S, Kim JK. Stable carbon and nitrogen isotopic characterization and tracing nutrient sources of Ulva blooms around Jeju coastal areas. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:113033. [PMID: 31421580 DOI: 10.1016/j.envpol.2019.113033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/30/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
The present investigation was aimed to characterize the Ulva blooms and to identify the probable sources for Ulva blooms along the Jeju Island coast for pertinent control measures. Algal isotope signatures (δ13C, δ15N and δ18O) and tissue nitrogen and carbon were analyzed to map nutrient sources around the Jeju coastal areas. The algal δ13C values were ranged from -20.52 to -4.39‰, while δ15N and δ18O values ranged from 4.26 to 8.29‰ and 12.80-17.34‰, respectively. Moreover, site-specific significant differences were observed in algal stable isotope (δ13C, δ15N and δ18O) values. The bi-plot (δ15N vs δ18O) diagram indicated four dominant nitrogen sources along the Jeju coast, with 1) soil organic nitrogen mixed with livestock wastes (spring water samples and E), the 2) synthetic fertilizer input (A3 and B2), 3) sewage discharge (D1, D2 and I3) and 4) aquaculture waste (fish farm samples, A4, A5, B1, G and I2). Present findings revealed the different potential nitrogen sources for localized increase of algal growth along the Jeju coast. Finally, the present findings could be used as baseline data for efficient nutrient management to remediate Ulva blooms along Jeju coastal environment.
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Affiliation(s)
- Palas Samanta
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, South Korea; Department of Marine Science, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, South Korea
| | - Sookkyung Shin
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, South Korea; Department of Marine Science, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, South Korea
| | - Sojin Jang
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, South Korea; Department of Marine Science, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, South Korea
| | - Young-Cheol Song
- Research Institute of Health and Environment, Jeju Special Self-Governing Province, 41 Samdong-gil, Jeju, Jejul Special Self-Governing Province, 63152, South Korea
| | - Sangsil Oh
- Research Institute of Health and Environment, Jeju Special Self-Governing Province, 41 Samdong-gil, Jeju, Jejul Special Self-Governing Province, 63152, South Korea
| | - Jang K Kim
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, South Korea; Department of Marine Science, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, South Korea.
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9
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Valiela I, Liu D, Lloret J, Chenoweth K, Hanacek D. Stable isotopic evidence of nitrogen sources and C4 metabolism driving the world's largest macroalgal green tides in the Yellow Sea. Sci Rep 2018; 8:17437. [PMID: 30487594 PMCID: PMC6261935 DOI: 10.1038/s41598-018-35309-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/31/2018] [Indexed: 11/29/2022] Open
Abstract
During recent years, rapid seasonal growth of macroalgae covered extensive areas within the Yellow Sea, developing the world's most spatially extensive "green tide". The remarkably fast accumulation of macroalgal biomass is the joint result of high nitrogen supplies in Yellow Sea waters, plus ability of the macroalgae to optionally use C4 photosynthetic pathways that facilitate rapid growth. Stable isotopic evidence shows that the high nitrogen supply is derived from anthropogenic sources, conveyed from watersheds via river discharges, and by direct atmospheric deposition. Wastewater and manures supply about half the nitrogen used by the macroalgae, fertiliser and atmospheric deposition each furnish about a quarter of the nitrogen in macroalgae. The massive green tides affecting the Yellow Sea are likely to increase, with significant current and future environmental and human consequences. Addressing these changing trajectories will demand concerted investment in new basic and applied research as the basis for developing management policies.
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Affiliation(s)
- Ivan Valiela
- The Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts, 02543, USA
| | - Dongyan Liu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China.
| | - Javier Lloret
- The Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts, 02543, USA
| | - Kelsey Chenoweth
- The Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts, 02543, USA.
| | - Daniella Hanacek
- The Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts, 02543, USA
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10
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García-Seoane R, Aboal JR, Boquete MT, Fernández JA. Biomonitoring coastal environments with transplanted macroalgae: A methodological review. MARINE POLLUTION BULLETIN 2018; 135:988-999. [PMID: 30301124 DOI: 10.1016/j.marpolbul.2018.08.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 08/10/2018] [Accepted: 08/12/2018] [Indexed: 06/08/2023]
Abstract
The use of macroalgae transplants is a recent technique used in pollution biomonitoring studies in marine ecosystems. Only 60 articles published between 1978 and 2017 reported the use of this environmental tool for the active biomonitoring of inorganic pollutants and nutrients worldwide. In this review paper, we evaluated studies on this topic in relation to the development of methodological aspects of the technique and the degree of standardization of the protocols used. On the basis of findings of this review, we conclude that the technique is not yet standardized and that uniformisation of protocols is required to enable comparison of the results of different studies. We propose a new protocol for applying the technique, in which each suggestion has been carefully and rigorously compared with the relevant findings reported in the available literature.
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Affiliation(s)
- R García-Seoane
- Ecology Unit, Dept. Functional Biology, Universidade de Santiago de Compostela, Fac. Biología, Lope Gómez de Marzoa s/n, Santiago de Compostela 15702, A Coruña, Spain.
| | - J R Aboal
- Ecology Unit, Dept. Functional Biology, Universidade de Santiago de Compostela, Fac. Biología, Lope Gómez de Marzoa s/n, Santiago de Compostela 15702, A Coruña, Spain
| | - M T Boquete
- Estación Biológica de Doñana, CSIC, Avenida Américo Vespucio 25, Isla de la Cartuja, Sevilla 41092, Spain; Department of Integrative Biology, University of South Florida, 4202 E Fowler Ave, Tampa, FL 33620, USA
| | - J A Fernández
- Ecology Unit, Dept. Functional Biology, Universidade de Santiago de Compostela, Fac. Biología, Lope Gómez de Marzoa s/n, Santiago de Compostela 15702, A Coruña, Spain
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11
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Rossi L, Calizza E, Careddu G, Rossi D, Orlandi L, Jona-Lasinio G, Aguzzi L, Costantini ML. Space-time monitoring of coastal pollution in the Gulf of Gaeta, Italy, using δ 15N values of Ulva lactuca, landscape hydromorphology, and Bayesian Kriging modelling. MARINE POLLUTION BULLETIN 2018; 126:479-487. [PMID: 29421129 DOI: 10.1016/j.marpolbul.2017.11.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/17/2017] [Accepted: 11/27/2017] [Indexed: 05/24/2023]
Abstract
We investigated the space-time dynamics of N pollution in a Mediterranean gulf (Gulf of Gaeta) by means of δ15N variation in seaweed fronds (Ulva lactuca) previously collected from an unpolluted habitat. We used a comprehensive deployment grid that enabled the generation of isotopic seascapes (isoseascapes) describing the topography of N pollution in coastal waters and identifying N input hotspots and their pathways of dispersion at sea. The δ15N values of U. lactuca increased during 48h of exposure to the gulf waters, indicating anthropogenic N inputs from wastewater-derived sources. Comparison of the isoseascapes between two years differing in terms of rainfall identified coastal and offshore areas that were vulnerable to freshwater-transported nutrients, consistent with terrestrial hydromorphology and sea surface-water circulation. Isoseacapes were robust enough to reduce deployment effort, representing a powerful tool for monitoring and management strategies and useful for Environmental Protection Agencies, the main target audience of applied ecological research.
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Affiliation(s)
- Loreto Rossi
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa-Consorzio Nazionale Interuniversitario per le Scienze del Mare, P.le Flaminio 9, 00196 Rome, Italy
| | - Edoardo Calizza
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa-Consorzio Nazionale Interuniversitario per le Scienze del Mare, P.le Flaminio 9, 00196 Rome, Italy.
| | - Giulio Careddu
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - David Rossi
- National Research Council, Institute for Water Research (CNR-IRSA), Strada Provinciale 35d, 16, 00015 Monterotondo (RM), Italy
| | - Lucia Orlandi
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - Giovanna Jona-Lasinio
- Department of Statistical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Laura Aguzzi
- Regional Agency for Environmental Protection, Department of Latina, ARPA Lazio, via Serpieri 3, 04100 Latina, Italy
| | - Maria Letizia Costantini
- Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy; CoNISMa-Consorzio Nazionale Interuniversitario per le Scienze del Mare, P.le Flaminio 9, 00196 Rome, Italy
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12
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Mwaura J, Umezawa Y, Nakamura T, Kamau J. Evidence of chronic anthropogenic nutrient within coastal lagoon reefs adjacent to urban and tourism centers, Kenya: A stable isotope approach. MARINE POLLUTION BULLETIN 2017; 119:74-86. [PMID: 28457557 DOI: 10.1016/j.marpolbul.2017.04.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 05/21/2023]
Abstract
The source of anthropogenic nutrient and its spatial extent in three fringing reefs with differing human population gradients in Kenya were investigated using stable isotope approaches. Nutrient concentrations and nitrate-δ15N in seepage water indicated that population density and tourism contributed greatly to the extent of nutrient loading to adjacent reefs. Although water-column nutrient analyses did not show any significant difference among the reefs, higher δ15N and N contents in macrophytes showed terrestrial nutrients affected primary producers in onshore areas in Nyali and Bamburi reefs, but were mitigated by offshore water intrusion especially at Nyali. On the offshore reef flat, where the same species of macroalgae were not available, complementary use of δ15N in sedimentary organic matter suggested inputs of nutrients originated from the urban city of Mombasa. If population increases in the future, nutrient conditions in the shallower reef, Vipingo, may be dramatically degraded due to lower water exchange ratio.
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Affiliation(s)
- Jelvas Mwaura
- Kenya Marine and Fisheries Research Institute, P.O. Box 81651-80100, Kenya; Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan.
| | - Yu Umezawa
- Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
| | - Takashi Nakamura
- Department of Mechanical and Environmental Informatics, Graduate School of Information Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1 W8-13 Meguro, Tokyo 152-8552, Japan
| | - Joseph Kamau
- Kenya Marine and Fisheries Research Institute, P.O. Box 81651-80100, Kenya
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13
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Calizza E, Costantini ML, Careddu G, Rossi L. Effect of habitat degradation on competition, carrying capacity, and species assemblage stability. Ecol Evol 2017; 7:5784-5796. [PMID: 28811883 PMCID: PMC5552933 DOI: 10.1002/ece3.2977] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 03/03/2017] [Accepted: 03/07/2017] [Indexed: 11/11/2022] Open
Abstract
Changes in species’ trophic niches due to habitat degradation can affect intra‐ and interspecific competition, with implications for biodiversity persistence. Difficulties of measuring species’ interactions in the field limit our comprehension of competition outcomes along disturbance gradients. Thus, information on how habitat degradation can destabilize food webs is scarce, hindering predictions regarding responses of multispecies systems to environmental changes. Seagrass ecosystems are undergoing degradation. We address effects of Posidonia oceanica coverage reduction on the trophic organization of a macroinvertebrate community in the Tyrrhenian Sea (Italy), hypothesizing increased trophic generalism, niche overlap among species and thus competition and decreased community stability due to degraded conditions. Census data, isotopic analysis, and Bayesian mixing models were used to quantify the trophic niches of three abundant invertebrate species, and intra‐ and interspecific isotopic and resource‐use similarity across locations differing in seagrass coverage. This allowed the computation of (1) competition strength, with respect to each other and remaining less abundant species and (2) habitat carrying capacity. To explore effects of the spatial scale on the interactions, we considered both individual locations and the entire study area (“‘meadow scale”). We observed that community stability and habitat carrying capacity decreased as P. oceanica coverage declined, whereas niche width, similarity of resource use and interspecific competition strength between species increased. Competition was stronger, and stability lower, at the meadow scale than at the location scale. Indirect effects of competition and the spatial compartmentalization of species interactions increased stability. Results emphasized the importance of trophic niche modifications for understanding effects of habitat loss on biodiversity persistence. Calculation of competition coefficients based on isotopic distances is a promising tool for describing competitive interactions in real communities, potentially extendible to any subset of ecological niche axes for which specimens’ positions and pairwise distances can be obtained.
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Affiliation(s)
- Edoardo Calizza
- Department of Environmental Biology Sapienza University of Rome Rome Italy.,CoNISMa Rome Italy
| | | | - Giulio Careddu
- Department of Environmental Biology Sapienza University of Rome Rome Italy
| | - Loreto Rossi
- Department of Environmental Biology Sapienza University of Rome Rome Italy.,CoNISMa Rome Italy
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14
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Orlandi L, Calizza E, Careddu G, Carlino P, Costantini ML, Rossi L. The effects of nitrogen pollutants on the isotopic signal (δ 15N) of Ulva lactuca: Microcosm experiments. MARINE POLLUTION BULLETIN 2017; 115:429-435. [PMID: 28027782 DOI: 10.1016/j.marpolbul.2016.12.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 12/09/2016] [Accepted: 12/16/2016] [Indexed: 05/24/2023]
Abstract
Effects of two chemical forms of Nitrogen (NH4+ and NO3-) on δ15N in Ulva lactuca were analysed separately and in mixture at two concentrations. We assessed whether the δ15N values of U. lactuca discriminate between Nitrogen from synthetic fertilisers (inorganic) and from fresh cow manure (organic), and the isotopic ability of the macroalga to reflect Nitrogen concentrations. Isotopic signature and N content of the macroalga reflected different nitrogenous sources and their concentrations after 48h. The inorganic Nitrogen source (NH4NO3) altered the isotopic values of the macroalgae more than Nitrogen from fresh cow manure (NO3-). δ15N values observed in the mixed solution did not differ from those displayed in NH4NO3 treatment alone. We conclude that stable isotope analysis of U. lactuca collected in an unpolluted site and experimentally submerged in sites suspected of being affected by disturbance is a useful tool for rapid monitoring of anthropogenic discharges of Nitrogen pollutants.
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Affiliation(s)
- Lucia Orlandi
- Sapienza University of Rome, Department of Environmental Biology, via dei Sardi 70, 00185 Rome, Italy
| | - Edoardo Calizza
- Sapienza University of Rome, Department of Environmental Biology, via dei Sardi 70, 00185 Rome, Italy; CoNISMa - Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196 Rome, Italy
| | - Giulio Careddu
- Sapienza University of Rome, Department of Environmental Biology, via dei Sardi 70, 00185 Rome, Italy; CoNISMa - Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196 Rome, Italy
| | - Pasquale Carlino
- Sapienza University of Rome, Department of Environmental Biology, via dei Sardi 70, 00185 Rome, Italy
| | - Maria Letizia Costantini
- Sapienza University of Rome, Department of Environmental Biology, via dei Sardi 70, 00185 Rome, Italy; CoNISMa - Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196 Rome, Italy.
| | - Loreto Rossi
- Sapienza University of Rome, Department of Environmental Biology, via dei Sardi 70, 00185 Rome, Italy; CoNISMa - Consorzio Nazionale Interuniversitario per le Scienze del Mare, Piazzale Flaminio 9, 00196 Rome, Italy
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15
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Lemesle S, Erraud A, Mussio I, Rusig AM, Claquin P. Dynamics of δ(15)N isotopic signatures of different intertidal macroalgal species: Assessment of bioindicators of N sources in coastal areas. MARINE POLLUTION BULLETIN 2016; 110:470-483. [PMID: 27349382 DOI: 10.1016/j.marpolbul.2016.06.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 05/27/2016] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
δ(15)N of annual (Ulva sp., Porphyra sp.) and perennial intertidal seaweed species (Chondrus crispus, Fucus sp.) collected on 17 sampling points along the French coast of the English Channel in 2012 and 2013 were assessed on their suitability as bioindicators of N pollution in coastal areas. A sine function applied for δ(15)N time series data showed for all the species the same seasonal trend with lowest δ(15)N values in April and highest in summer but with no significant interspecific differences of amplitude (α) and phase angle (ϕ). This model provides a useful tool for monitoring the inter-annual changes of N pollution. An interspecific variability of δ(15)N values was observed, probably due to their tolerance to emersion. An in vitro study for comparing the kinetic acquisition of the isotopic signal and N uptake mechanisms of each species underlined the influence of algal physiology on the δ(15)N interspecific variability.
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Affiliation(s)
- Stéphanie Lemesle
- Normandie Univ, UNICAEN, CNRS, BOREA, 14000 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UNICAEN, Esplanade de la Paix, 14000 Caen, France
| | - Alexandre Erraud
- Normandie Univ, UNICAEN, CNRS, BOREA, 14000 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UNICAEN, Esplanade de la Paix, 14000 Caen, France
| | - Isabelle Mussio
- Normandie Univ, UNICAEN, CNRS, BOREA, 14000 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UNICAEN, Esplanade de la Paix, 14000 Caen, France.
| | - Anne-Marie Rusig
- Normandie Univ, UNICAEN, CNRS, BOREA, 14000 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UNICAEN, Esplanade de la Paix, 14000 Caen, France
| | - Pascal Claquin
- Normandie Univ, UNICAEN, CNRS, BOREA, 14000 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UNICAEN, Esplanade de la Paix, 14000 Caen, France
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16
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Mechora Š, Kanduč T. Environmental assessment of freshwater ecosystems of the Sava River watershed and Cerkniško Lake, Slovenia, using the bioindicator species Fontinalis antipyretica: insights from stable isotopes and selected elements. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 2016; 52:239-257. [PMID: 26758230 DOI: 10.1080/10256016.2016.1114933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 09/20/2015] [Indexed: 06/05/2023]
Abstract
Ten locations in the Notranjska region, Slovenia, with different land use in the catchment (town, village and agricultural areas), including reference points with different geological composition considered as unpolluted sites, were sampled for water and aquatic moss to evaluate environmental assessment in fresh water systems of the Sava River watershed. Samples of fresh water and Fontinalis antipyretica were taken in all four seasons during the years 2010 and 2012. The water chemistry of the investigated locations was dominated by [Formula: see text], while concentrations of [Formula: see text] seasonally ranged from 2.1 to 6.4 mg L(-1) and at one of the reference sites did not exceed 1.3 mg L(-1). δ(13)CDIC values seasonally ranged from -13.3 to -8.1 ‰ and indicated waters dominated by degradation of organic matter and dissolution of carbonates. δ(13)Cplant values of F. antipyretica seasonally ranged from -45 to -32.9 ‰ and of δ(15)Nplant from -0.2 to 6.5 ‰. The higher δ(15)N value of 6.5 ‰ found in F. antipyretica was related to agricultural activity in the watershed. The content of minor and trace elements in F. antipyretica ranged from 4-38 µg g(-1) for Ni, 17-105 µg g(-1) for Zn, 2-28 µg g(-1) for Pb, 0.26-1.95 µg g(-1) for Cd, 4-27 µg g(-1) for Cu, 4-49 µg g(-1) for Cr, 1-6 µg g(-1) for As and 0.33-3.24 µg g(-1) for Se. The most polluted watershed was the Pšata stream (agricultural area, cattle farm with the highest concentration of nitrate in water) also with highest values for Ni, Cr, Pb, Zn and As.
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Affiliation(s)
- Špela Mechora
- a Biotechnical Faculty , University of Ljubljana , Ljubljana , Slovenia
| | - Tjaša Kanduč
- b Department of Environmental Sciences , Jožef Stefan Institute , Ljubljana , Slovenia
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17
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Calizza E, Costantini ML, Rossi D, Pasquali V, Careddu G, Rossi L. Stable isotopes and digital elevation models to study nutrient inputs in high-arctic lakes. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI 2016. [DOI: 10.1007/s12210-016-0515-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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18
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Lemesle S, Mussio I, Rusig AM, Menet-Nédélec F, Claquin P. Impact of seaweed beachings on dynamics of δ(15)N isotopic signatures in marine macroalgae. MARINE POLLUTION BULLETIN 2015; 97:241-254. [PMID: 26095988 DOI: 10.1016/j.marpolbul.2015.06.010] [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: 03/25/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 06/04/2023]
Abstract
A fine-scale survey of δ(15)N, δ(13)C, tissue-N in seaweeds was conducted using samples from 17 sampling points at two sites (Grandcamp-Maisy (GM), Courseulles/Mer (COU)) along the French coast of the English Channel in 2012 and 2013. Partial triadic analysis was performed on the parameter data sets and revealed the functioning of three areas: one estuary (EstA) and two rocky areas (GM(∗), COU(∗)). In contrast to oceanic and anthropogenic reference points similar temporal dynamics characterized δ(15)N signatures and N contents at GM(∗) and COU(∗). Nutrient dynamics were similar: the N-concentrations in seawater originated from the River Seine and local coastal rivers while P-concentrations mainly from these local rivers. δ(15)N at GM(∗) were linked to turbidity suggesting inputs of autochthonous organic matter from large-scale summer seaweed beachings made up of a mixture of Rhodophyta, Phaeophyta and Chlorophyta species. This study highlights the coupling between seaweed beachings and nitrogen sources of intertidal macroalgae.
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Affiliation(s)
- Stéphanie Lemesle
- Normandie Université, Université de Caen Basse-Normandie, F-14032 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UniCaen, Esplanade de la Paix, F-14032 Caen, France
| | - Isabelle Mussio
- Normandie Université, Université de Caen Basse-Normandie, F-14032 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UniCaen, Esplanade de la Paix, F-14032 Caen, France.
| | - Anne-Marie Rusig
- Normandie Université, Université de Caen Basse-Normandie, F-14032 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UniCaen, Esplanade de la Paix, F-14032 Caen, France
| | - Florence Menet-Nédélec
- IFREMER, Laboratoire Environnement Ressources de Normandie, Avenue du Général de Gaulle, 14520 Port-en-Bessin, France
| | - Pascal Claquin
- Normandie Université, Université de Caen Basse-Normandie, F-14032 Caen, France; UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UniCaen, Esplanade de la Paix, F-14032 Caen, France
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19
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Calizza E, Aktan Y, Costantini ML, Rossi L. Stable isotope variations in benthic primary producers along the Bosphorus (Turkey): A preliminary study. MARINE POLLUTION BULLETIN 2015; 97:535-538. [PMID: 25982821 DOI: 10.1016/j.marpolbul.2015.05.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 05/08/2015] [Accepted: 05/10/2015] [Indexed: 06/04/2023]
Abstract
The Bosphorus Strait is a dynamic and complex system. Recent evidences showed nitrogen and heavy metal concentrations to follow opposite patterns across the Strait, suggesting a complex spatial organisation of the anthropogenic disturbance in this system. Here, we provide isotopic information on the origin and transportation of dissolved nitrogen along the Bosphorus. C and N isotopic and elemental analyses were performed on specimens of Ulva lactuca and associated epiphytes sampled in five locations across the Strait. Variations in C and N isotopic signatures were observed in U. lactuca, pointing to a decrease in the availability of anthropogenic organic dissolved nitrogen along a north-south direction. Conversely, epiphytes did not show isotopic or elemental patterns across the Strait. These results suggest that preliminary stable isotope surveys in extended costal systems basing on U. lactuca can represent a valuable tool to focus meaningful targets and hypotheses for pollution studies in the Mediterranean region.
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Affiliation(s)
- Edoardo Calizza
- Laboratory of Trophic Ecology, Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy.
| | - Yelda Aktan
- Istanbul University, Fisheries Faculty, Ordu Cad. No. 200, 34470 Laleli, Istanbul, Turkey
| | - Maria Letizia Costantini
- Laboratory of Trophic Ecology, Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
| | - Loreto Rossi
- Laboratory of Trophic Ecology, Department of Environmental Biology, Sapienza University of Rome, via dei Sardi 70, 00185 Rome, Italy
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20
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Zhang X, Zhou Y, Liu P, Wang F, Liu B, Liu X, Xu Q, Yang H. Temporal pattern in the bloom-forming macroalgae Chaetomorpha linum and Ulva pertusa in seagrass beds, Swan Lake lagoon, North China. MARINE POLLUTION BULLETIN 2014; 89:229-238. [PMID: 25444622 DOI: 10.1016/j.marpolbul.2014.09.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 09/22/2014] [Accepted: 09/29/2014] [Indexed: 06/04/2023]
Abstract
Seagrasses that are distributed over a large area of the Swan Lake, Weihai, China, support a productive ecosystem. In recent years, however, frequent macroalgal blooms have changed the ecosystem structure and threatened the seagrasses. To understand the bloom-forming macroalgae we conducted a yearly field survey of Swan Lake. Results indicated that the macroalgae Chaetomorpha linum and Ulva pertusa both exhibited a much higher productivity and attained a greater maximum biomass (of 1712±780gDWm(-)(2) and 1511 ± 555 gDW m(-2), respectively) than was the case for the seagrasses. The mean annual atomic ratios of C/N, C/P and N/P in C. linum were 14.31 ± 4.45, 402.82 ± 130.25, and 28.12±2.08, respectively. The δ(15)N values (11.09 ± 0.91‰ for C. linum; 9.27 ± 2.83‰ for U. pertusa) indicated a land-based source of N enrichment to the macroalgal blooms. High concentrations of nitrogen and phosphorus in the lagoon, particularly near the river mouth, supported the blooms.
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Affiliation(s)
- Xiaomei Zhang
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yi Zhou
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China.
| | - Peng Liu
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Feng Wang
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Bingjian Liu
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xujia Liu
- Guangxi Institute of Oceanology, Key Laboratory of Marine Biological Technology, Beihai 536000, PR China
| | - Qiang Xu
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
| | - Hongsheng Yang
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China
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21
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Thibaut T, Blanfuné A, Markovic L, Verlaque M, Boudouresque CF, Perret-Boudouresque M, Maćic V, Bottin L. Unexpected abundance and long-term relative stability of the brown alga Cystoseira amentacea, hitherto regarded as a threatened species, in the north-western Mediterranean Sea. MARINE POLLUTION BULLETIN 2014; 89:305-323. [PMID: 25440190 DOI: 10.1016/j.marpolbul.2014.09.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 09/17/2014] [Accepted: 09/20/2014] [Indexed: 06/04/2023]
Abstract
Cystoseira amentacea is a Mediterranean endemic alga thriving on very shallow rocky substrates. It has been considered as a threatened species, having experienced a steady decline and is therefore protected by international conventions. The historical distribution of the species has been assessed along the French Mediterranean coast, on the basis of 467 articles and herbarium vouchers. We have produced an accurate map of its current distribution and abundance along 1832 km of coastline, through in situ surveys. C. amentacea was observed along 1125 km of shoreline, including 33% of almost continuous or continuous belt. In most of its range, there is no evidence of loss, except in 4 areas of Provence, French Riviera and Corsica. A significant relation was found between the absence or low abundance of C. amentacea and the vicinity of ports and large sewage outfalls. The status of conservation of the species should therefore be reassessed.
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Affiliation(s)
- Thierry Thibaut
- Aix-Marseille University, and Toulon University, Mediterranean Institute of Oceanography (MIO), CNRS/INSU, IRD, UM 110, Campus of Luminy, 13288 Marseille cedex 9, France.
| | - Aurélie Blanfuné
- Aix-Marseille University, and Toulon University, Mediterranean Institute of Oceanography (MIO), CNRS/INSU, IRD, UM 110, Campus of Luminy, 13288 Marseille cedex 9, France
| | - Laurent Markovic
- European Commission, Directorate-General for Maritime Affairs and Fisheries, Avenue Joseph-II, 79 office 02/67, 1049 Brussels, Belgium
| | - Marc Verlaque
- Aix-Marseille University, and Toulon University, Mediterranean Institute of Oceanography (MIO), CNRS/INSU, IRD, UM 110, Campus of Luminy, 13288 Marseille cedex 9, France
| | - Charles F Boudouresque
- Aix-Marseille University, and Toulon University, Mediterranean Institute of Oceanography (MIO), CNRS/INSU, IRD, UM 110, Campus of Luminy, 13288 Marseille cedex 9, France
| | - Michèle Perret-Boudouresque
- Aix-Marseille University, and Toulon University, Mediterranean Institute of Oceanography (MIO), CNRS/INSU, IRD, UM 110, Campus of Luminy, 13288 Marseille cedex 9, France
| | - Vesna Maćic
- Institut za Biologiju Mora, Rukovodilac laboratorije, Naučni saradnik, P.Fah 69, 85330 Kotor, Montenegro
| | - Lorraine Bottin
- Université Nice-Sophia-Antipolis, EA 4228 ECOMERS, Faculté des Sciences, Parc Valrose, 06108 Nice cedex 2, France
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