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Dragun Z, Tepić N, Ramani S, Krasnići N, Filipović Marijić V, Valić D, Kapetanović D, Erk M, Rebok K, Kostov V, Jordanova M. Mining waste as a cause of increased bioaccumulation of highly toxic metals in liver and gills of Vardar chub (Squalius vardarensis Karaman, 1928). Environ Pollut 2019; 247:564-576. [PMID: 30708319 DOI: 10.1016/j.envpol.2019.01.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/14/2019] [Accepted: 01/18/2019] [Indexed: 06/09/2023]
Abstract
Freshwater contamination with mining waste can result with high concentrations of toxic metals in the water and in fish organs. In North-Eastern Macedonia, several rivers (e.g., Zletovska, Kriva) are exposed to acid mine drainage from active Pb/Zn mines. Previous studies confirmed high concentrations of dissolved metals in their water. This study was performed in liver and gills of Vardar chub (Squalius vardarensis Karaman, 1928) from three Macedonian rivers (Bregalnica, Kriva and Zletovska) in spring and autumn 2012. The aim was to establish if increased exposure to certain metals have resulted with their increased bioaccumulation. The concentrations of 19 elements were measured in cytosolic tissue fractions, to obtain information on metabolically available metal species. The following ranges of cytosolic concentrations of highly toxic elements were measured in the Vardar chub liver (in μg/L): Cd, 1.18-184; Cs, 0.25-25.4; Tl, 0.02-5.80; Pb, 0.70-61.1. Their ranges measured in the gills (in μg/L) were the following: Cd, 0.24-59.2; Cs, 0.39-24.4; Tl, 0.01-1.00; Pb, 0.65-87.2. Although the water of the mining impacted Zletovska River was highly contaminated with several essential metals, especially with Mn and Zn, the majority of essential elements (Na, K, Ca, Mg, Co, Cu, Fe, Mn, Mo, and Zn) did not reflect the exposure level. In contrast, seven nonessential elements reflected the level of exposure in the water. Significantly increased hepatic and gill concentrations of Cs, Rb, Sr, and Tl were detected in Vardar chub from the Zletovska River compared to the other two rivers, of Cd and Pb in the Zletovska and Kriva River compared to Bregalnica, and of V in the Bregalnica River compared to Zletovska and Kriva rivers. Observed significant metal bioaccumulation, in particular of highly toxic elements, as a consequence of exposure to water contaminated with mining waste points to necessity of intensified supervision of mining impacted rivers.
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Affiliation(s)
- Zrinka Dragun
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Laboratory for Biological Effects of Metals, P.O. Box 180, 10002, Zagreb, Croatia.
| | - Nataša Tepić
- National Center for External Evaluation of Education, Petračićeva 4, 10000, Zagreb, Croatia.
| | - Sheriban Ramani
- National Hydrometeorological Service, Hydrology and Ecology Department, Skupi 28, 1000, Skopje, Macedonia.
| | - Nesrete Krasnići
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Laboratory for Biological Effects of Metals, P.O. Box 180, 10002, Zagreb, Croatia.
| | - Vlatka Filipović Marijić
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Laboratory for Biological Effects of Metals, P.O. Box 180, 10002, Zagreb, Croatia.
| | - Damir Valić
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Laboratory for Aquaculture and Pathology of Aquatic Organisms, Bijenička c. 54, Zagreb, Croatia.
| | - Damir Kapetanović
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Laboratory for Aquaculture and Pathology of Aquatic Organisms, Bijenička c. 54, Zagreb, Croatia.
| | - Marijana Erk
- Ruđer Bošković Institute, Division for Marine and Environmental Research, Laboratory for Biological Effects of Metals, P.O. Box 180, 10002, Zagreb, Croatia.
| | - Katerina Rebok
- Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Arhimedova 3, 1000, Skopje, Macedonia.
| | - Vasil Kostov
- Institute of Animal Sciences, Ile Ilievski 92a, 1000, Skopje, Macedonia.
| | - Maja Jordanova
- Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Arhimedova 3, 1000, Skopje, Macedonia.
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Dautović J, Vojvodić V, Tepić N, Ćosović B, Ciglenečki I. Dissolved organic carbon as potential indicator of global change: A long-term investigation in the northern Adriatic. Sci Total Environ 2017; 587-588:185-195. [PMID: 28242218 DOI: 10.1016/j.scitotenv.2017.02.111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/12/2017] [Accepted: 02/13/2017] [Indexed: 06/06/2023]
Abstract
Dissolved organic carbon (DOC) is an essential component of the biogeochemical marine system, effecting biological and chemical reactions that take place in the sea. DOC represents a dynamic component of the global carbon cycle. This paper reports 25years of measurements of DOC content and distribution at seven stations along the transect Po River delta - Rovinj in the northern Adriatic (NA). The results show strong temporal and spatial variability: (1) The highest average DOC concentrations were observed in 1998 and 2002 (143μmol/L and 137μmol/L, respectively); (2) The minimum average DOC was recorded in 2006 (88μmol/L) and (3) The short-term DOC accumulation (up to 203, average 102μmol/L) for the years 2009 to 2012, was observed during the summer and autumn months followed by unusually low DOC concentrations during the winter and spring. The DOC results from the more recent monitoring at the same stations indicate primarily oligotrophic characteristics of the NA seawater (88μmol/L). The results of DOC variability and distribution in the NA appears to be strongly influenced by complex circulation patterns. This paper provides a "link" between the Ionian circulation and the NA ecosystem as a part of the recently identified Adriatic-Ionian Bimodal Oscillating System (BiOS). A good agreement between the BiOS oscillation and other variables related to the DOC concentration, like the NA A and B winter types, the Po River discharge, salinity, chlorophyll a, occurrence of hypoxic-anoxic conditions, eutrophication and oligotrophication, suggests that DOC might be a good tool and indicator of global change.
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Affiliation(s)
- Jelena Dautović
- Rudjer Boskovic Institute, Division for Marine and Environmental Research, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Vjeročka Vojvodić
- Rudjer Boskovic Institute, Division for Marine and Environmental Research, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Nataša Tepić
- National Center for External Evaluation of Education, Ulica D. Tomljenovića 11, 10020 Zagreb, Croatia
| | - Božena Ćosović
- Rudjer Boskovic Institute, Division for Marine and Environmental Research, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Irena Ciglenečki
- Rudjer Boskovic Institute, Division for Marine and Environmental Research, Bijenička cesta 54, 10000 Zagreb, Croatia.
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Dragun Z, Tepić N, Krasnići N, Teskeredžić E. Accumulation of metals relevant for agricultural contamination in gills of European chub (Squalius cephalus). Environ Sci Pollut Res Int 2016; 23:16802-15. [PMID: 27194015 DOI: 10.1007/s11356-016-6830-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 05/04/2016] [Indexed: 05/25/2023]
Abstract
The study of metal bioaccumulation in the gills of European chub (Squalius cephalus) was conducted in September 2009 at the medium-sized rural river Sutla, characterized by agricultural and municipal type of water contamination. The concentration ranges were established for the first time in the soluble, metabolically available fractions of chub gills for 12 metals, which are environmentally extremely relevant and yet only seldom studied, as follows in a decreasing order: K, 225-895 mg L(-1); Na, 78-366 mg L(-1); Ca, 19-62 mg L(-1); Mg, 13-47 mg L(-1); Rb, 164-1762 μg L(-1); Sr, 24-81 μg L(-1); Ba, 13-67 μg L(-1); Mo, 1.3-16 μg L(-1); Co, 0.7-2.7 μg L(-1); Li, 0.4-2.2 μg L(-1); Cs, 0.2-1.9 μg L(-1); and V, 0.1-1.8 μg L(-1). The concentrations of Fe (1.6-6.4 mg L(-1)) and Mn (16-69 μg L(-1)) were also determined and were in agreement with previous reports. By application of general linear modelling, the influence of different abiotic (metal exposure level) and biotic parameters (fish sex, age, size and condition) on metal bioaccumulation was tested. It was established that bioaccumulation of many metals in fish depended on various physiological conditions, wherein Ba could be singled out as metal exhibiting the strongest association with one of biotic parameters, being significantly higher in smaller fish. However, it was also undoubtedly demonstrated that the concentrations of three metals can be applied as reliable indicators of metal exposure even in the conditions of low or moderate water contamination, such as observed in the Sutla River, and those were nonessential elements Li and Cs and essential element Fe. The results of our study present an important contribution to maintenance of high ecological status of European freshwaters, through enrichment of knowledge on the bioaccumulation of various metals in gills of European chub as frequently applied bioindicator species in monitoring of water pollution.
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Affiliation(s)
- Zrinka Dragun
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 54, 10000, Zagreb, Croatia.
| | - Nataša Tepić
- National Center for External Evaluation of Education, Petračićeva 4, 10000, Zagreb, Croatia
| | - Nesrete Krasnići
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 54, 10000, Zagreb, Croatia
| | - Emin Teskeredžić
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 54, 10000, Zagreb, Croatia
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Mikulić K, Radović A, Kati V, Jelaska S, Tepić N. Effects of land abandonment on bird communities of smallholder farming landscapes in post-war Croatia: implications for conservation policies. COMMUNITY ECOL 2014. [DOI: 10.1556/comec.15.2014.2.5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Gašparović B, Godrijan J, Frka S, Tomažić I, Penezić A, Marić D, Djakovac T, Ivančić I, Paliaga P, Lyons D, Precali R, Tepić N. Adaptation of marine plankton to environmental stress by glycolipid accumulation. Mar Environ Res 2013; 92:120-132. [PMID: 24094892 DOI: 10.1016/j.marenvres.2013.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 09/09/2013] [Accepted: 09/12/2013] [Indexed: 06/02/2023]
Abstract
A systematic investigation of non-phosphorus containing glycolipids (GL) was conducted in the northern Adriatic Sea during two years at two stations with different nutrient loads. GL concentration varied both spatially and temporally, with values of 1.1-21.5 μg/L and 0.4-44.7 μg/L in the particulate and the dissolved fraction, respectively. The highest concentrations were measured during summer in surface waters and at the more oligotrophic station, where GL yields (% of total lipids) were often higher than 20% and 50% in the particulate and dissolved fractions, respectively. To obtain more insight into factors governing GL accumulation autotrophic plankton community structure (pico-, nano- and microplankton fractions), chlorophyll a, heterotrophic bacteria and nutrient concentrations were measured together with hydrographic parameters and sunlight intensity. During the investigated period smaller autotrophic plankton cells (pico- and followed by nanoplankton) prevailed in abundance over larger cells (microplankton), which were found in large numbers in freshened surface samples. Several major findings resulted from the study. Firstly, during PO4 limitation, particularly at the oligotrophic station, enhanced glycolipid instead of phospholipid accumulation takes place, representing an effective phosphate-conserving mechanism. Secondly, results suggest that at seawater temperatures >19 °C autotrophic plankton considerably accumulate GL, probably to achieve thermal stability. Thirdly, high sunlight intensities seem to influence increased GL accumulation; GL possibly plays a role in cell mechanisms that prevent/mitigate photooxidation. And finally, substantial accumulation of GL detected in the dissolved fraction could be related to the fact that GL do not contain biologically relevant elements, like phosphorus, which makes them an unattractive substrate for enzyme activity. Therefore, substantial portion of CO2 could be removed from the atmosphere in P-limited regions during summer via its capture by plankton and conversion to GL.
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Affiliation(s)
- Blaženka Gašparović
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia.
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Radović A, Nikolov SC, Tepić N, Mikulić K, Jelaska SD, Budinski I. The influence of land abandonment on farmland bird communities: a case study from a floodplain landscape in Continental Croatia. Folia Zoologica 2013. [DOI: 10.25225/fozo.v62.i4.a4.2013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Andreja Radović
- University of Zagreb, Faculty of Science, Marulićev trg 20/II, 10000 Zagreb, Croatia;,
| | - Stoyan C. Nikolov
- Bulgarian Society for the Protection of Birds, Yavorov 71, 1111 Sofia, Bulgaria
| | - Nataša Tepić
- National Center for External Evaluation of Education, Petračićeva 4, 10000 Zagreb, Croatia
| | | | - Sven D. Jelaska
- University of Zagreb, Faculty of Science, Marulićev trg 20/II, 10000 Zagreb, Croatia;,
| | - Ivan Budinski
- Association BIOM, Biankinijeva 12b, 10000 Zagreb, Croatia;,
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