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1. Combined impact of climate and land use changes on streamflow and water quality in eastern Massachusetts, USA

Author:
Tu, Jun
Source:
Journal of hydrology 2009 v.379 no.3-4 pp. 268-283
ISSN:
0022-1694
Subject:
watershed hydrology; stream flow; water quality; climate change; land use change; seasonal variation; watersheds; nitrogen; water pollution; pollution load; summer; winter; autumn; hydrologic models; simulation models; geographic information systems; urban areas; Massachusetts
Abstract:
... In this study, the combined impact of climate and land use changes on streamflow and water quality is analyzed by using a GIS-based watershed simulation model, AVGWLF, to simulate the future changes in streamflow and nitrogen load under different climate change and land use change scenarios in watersheds of eastern Massachusetts. The results show that climate change and land development have more ...
DOI:
10.1016/j.jhydrol.2009.10.009

2. Modelling benthic denitrification processes over a whole drainage network

Author:
Thouvenot-Korppoo, Marie; Billen, Gilles; Garnier, Josette
Source:
Journal of hydrology 2009 v.379 no.3-4 pp. 239-250
ISSN:
0022-1694
Subject:
biogeochemical cycles; denitrification; drainage; eutrophication; geomorphology; nitrogen; nutrient content; nutrients; organic matter; oxygen; point source pollution; primary productivity; rivers; sediments; simulation models; space and time; streams; surface interactions; surface water; water pollution
Abstract:
... Denitrification is an important process of nitrogen cycling in river ecosystems as it can regulate nitrogen availability, and therefore primary production, controlling the degree of eutrophication. The strength of denitrification within a river network can alternate very rapidly in space and time and is essentially driven by the interactions between surface water, river geomorphology and microbial ...
DOI:
10.1016/j.jhydrol.2009.10.005

3. Antimicrobial resistance of fecal bacteria in waters of the Seine river watershed (France)

Author:
Servais, Pierre; Passerat, Julien
Source:
Science of the total environment 2009 v.408 no.2 pp. 365-372
ISSN:
0048-9697
Subject:
water pollution; coliform bacteria; intestinal microorganisms; bacterial contamination; multiple drug resistance; feces; watersheds; river water; nonpoint source pollution; prevalence; point source pollution; anti-infective agents; Enterococcaceae; wastewater; runoff; Escherichia coli; France
Abstract:
... We studied the prevalences of antimicrobial resistance (AR) and multiple antimicrobial resistance (MAR) among the fecal bacteria found in the rivers of a large watershed under strong anthropogenic pressures, the Seine river watershed (France). Two groups of fecal indicator bacteria, Escherichia coli and intestinal enterococci, were tested for their susceptibility to 16 and 10 antimicrobials respec ...
DOI:
10.1016/j.scitotenv.2009.09.042
PubMed:
19853889

4. Concentrations and loads of suspended sediment-associated pesticides in the San Joaquin River, California and tributaries during storm events

Author:
Hladik, Michelle L.; Domagalski, Joseph L.; Kuivila, Kathryn M.
Source:
Science of the total environment 2009 v.408 no.2 pp. 356-364
ISSN:
0048-9697
Subject:
pesticides; water pollution; river water; sediment contamination; chemical concentration; pollution load; geographical variation; storms; California; San Joaquin River
Abstract:
... Current-use pesticides associated with suspended sediments were measured in the San Joaquin River, California and its tributaries during two storm events in 2008. Nineteen pesticides were detected: eight herbicides, nine insecticides, one fungicide and one insecticide synergist. Concentrations for the herbicides (0.1 to 3000ng/g; median of 6.1ng/g) were generally greater than those for the insecti ...
DOI:
10.1016/j.scitotenv.2009.09.040
PubMed:
19875152

5. Forecasting risk along a river basin using a probabilistic and deterministic model for environmental risk assessment of effluents through ecotoxicological evaluation and GIS

Author:
Gutiérrez, Simón; Fernandez, Carlos; Barata, Carlos; Tarazona, José Vicente
Source:
Science of the total environment 2009 v.408 no.2 pp. 294-303
ISSN:
0048-9697
Subject:
water pollution; effluents; basins; rivers; ecotoxicology; wastewater treatment; geographic information systems; risk assessment; water flow; seasonal variation; toxicity testing; probabilistic models; prediction; Spain
Abstract:
... This work presents a computer model for Risk Assessment of Basins by Ecotoxicological Evaluation (RABETOX). The model is based on whole effluent toxicity testing and water flows along a specific river basin. It is capable of estimating the risk along a river segment using deterministic and probabilistic approaches. The Henares River Basin was selected as a case study to demonstrate the importance ...
DOI:
10.1016/j.scitotenv.2009.09.053
PubMed:
19875154

6. Influence of sex, maturity and reproduction on PCB and p,p′DDE concentrations and repartitions in the European hake (Merluccius merluccius, L.) from the Gulf of Lions (N.W. Mediterranean)

Author:
Bodiguel, Xavier; Loizeau, Véronique; Le Guellec, Anne-Marie; Roupsard, François; Philippon, Xavier; Mellon-Duval, Capucine
Source:
Science of the total environment 2009 v.408 no.2 pp. 304-311
ISSN:
0048-9697
Subject:
Merluccius; hake; polychlorinated biphenyls; DDE (pesticide); water pollution; bioaccumulation; chemical concentration; tissue distribution; gender differences; animal age; maturity stage; reproduction; spawning; lean fish; Mediterranean Sea
Abstract:
... The main objective of this work was to establish the influence of sex, maturity and reproduction on the contamination of the demersal fish Merluccius merluccius by organochlorine compounds. Polychlorinated biphenyls (PCBs) and p,p′DDE were quantified in muscle, liver and gonads of female and male hakes collected in the Gulf of Lions in 2004 and 2005. Observed levels appeared higher than the popula ...
DOI:
10.1016/j.scitotenv.2009.10.004
PubMed:
19875155

7. Size distribution of methylmercury associated with particulate and dissolved organic matter in freshwaters

Author:
Hill, Jonathan R.; O'Driscoll, Nelson J.; Lean, David R.S.
Source:
Science of the total environment 2009 v.408 no.2 pp. 408-414
ISSN:
0048-9697
Subject:
water pollution; chemical concentration; wetlands; fractionation; lakes; particulates; river water; methylmercury compounds; dissolved organic carbon; molecular weight; particle size distribution; Ontario; Quebec
Abstract:
... Water samples were collected from 20 wetland, river and lake sites across Eastern Ontario and Western Quebec to investigate the distribution of methylmercury (MeHg) associated with various size fractions of dissolved organic matter (DOM). Tangential Flow UltraFiltration (TUF) was used to fractionate DOM by nominal molecular size (<0.2μm, <300kDa, <30kDa, <5kDa and <1kDa). DOM fluorescence (DOM FL) ...
DOI:
10.1016/j.scitotenv.2009.09.030
PubMed:
19850323

8. Response of the early developmental stages of hatchery reared salmonids to major ions in a simulated mine effluent

Author:
Stekoll, Michael S.; Smoker, William W.; Failor-Rounds, Barbi J.; Wang, Ivan A.; Joyce, Valerie J.
Source:
Aquaculture 2009 v.298 no.1-2 pp. 172-181
ISSN:
0044-8486
Subject:
fish farms; developmental stages; Oncorhynchus gorbuscha; Salvelinus alpinus; farmed fish; Oncorhynchus kisutch; salmon; embryogenesis; environmental exposure; water pollution; water quality; Oncorhynchus keta; total dissolved solids; fish culture; Oncorhynchus mykiss; fertilization (reproduction); industrial effluents; mining; Alaska
Abstract:
... In response to a potential revision by the state of Alaska to increase discharge limits for total dissolved solids (TDS) in the mining industry, we studied various life stages of hatchery reared salmonids exposed to the major ions in a simulated mine effluent at concentrations of salts up to 2500mg l⁻¹. Effects depended on the developmental stage and the exposure period. For short term (24- to 96- ...
DOI:
10.1016/j.aquaculture.2009.10.017

9. Contamination and restoration of an estuary affected by phosphogypsum releases

Author:
Villa, M.; Mosqueda, F.; Hurtado, S.; Mantero, J.; Manjón, G.; Periañez, R.; Vaca, F.; García-Tenorio, R.
Source:
Science of the total environment 2009 v.408 no.1 pp. 69-77
ISSN:
0048-9697
Subject:
estuaries; ecological restoration; phosphogypsum; waste management; pollution control; water pollution; sediment contamination; estuarine sediments; radium; lead; radionuclides; temporal variation; decontamination; Spain
Abstract:
... The Huelva Estuary in Huelva, Spain, has been one of the most studied environmental compartments in the past years from the point of view of naturally occurring radioactive material (NORM) releases. It has been historically affected by waste releases, enriched in radionuclides from the U-decay series, from factories located in the area devoted to the production of phosphoric acid and phosphate fer ...
DOI:
10.1016/j.scitotenv.2009.09.028
PubMed:
19822348

10. Seasonal distributions of mercury species and their relationship to some physicochemical factors in Puding Reservoir, Guizhou, China

Author:
Zhang, Junfang; Feng, Xinbin; Yan, Haiyu; Guo, Yanna; Yao, Heng; Meng, Bo; Liu, Kai
Source:
Science of the total environment 2009 v.408 no.1 pp. 122-129
ISSN:
0048-9697
Subject:
water pollution; chemical concentration; mercury; physicochemical properties; chemical speciation; seasonal variation; methylmercury compounds; spatial variation; hydrochemistry; runoff; China
Abstract:
... A comprehensive study was conducted in July 2006, January 2007 and March 2007 to determine the impacts of some major physicochemical parameters on the level of mercury (Hg) in Puding Reservoir, Guizhou, China. The concentrations of Hg species in the summer campaign were significantly higher (p <0.01, generally 2 to 3 times higher) than those in the winter and spring campaigns, and no statistical d ...
DOI:
10.1016/j.scitotenv.2009.08.041
PubMed:
19800656

11. Sources of dissolved mine drainage and atmospheric transported lead: A comparative case study in Japan and Sweden

Author:
Åberg, Göran; Satake, Kenichi
Source:
Science of the total environment 2009 v.408 no.1 pp. 117-121
ISSN:
0048-9697
Subject:
mining; drainage; acid mine drainage; runoff; lead; isotopes; atmospheric deposition; geographical variation; pollutants; water pollution; Japan; Sweden
Abstract:
... A comparative case study in Naganobori Japan and Falun Sweden of runoff water from copper mines shows that the water and its particulates, filtered with a cutoff of 0.45μm, have different lead isotope ratios pointing to different origins for the lead. While the larger particles have a lead ratio indicative of the atmospheric anthropogenic pollution the soluble lead has that of the copper ores. The ...
DOI:
10.1016/j.scitotenv.2009.09.038
PubMed:
19833378

12. Endosulfan I and endosulfan sulfate disrupts zebrafish embryonic development

Author:
Stanley, Kerri A.; Curtis, Lawrence R.; Massey Simonich, Staci L.; Tanguay, Robert L.
Source:
Aquatic toxicology 2009 v.95 no.4 pp. 355-361
ISSN:
0166-445X
Subject:
water pollution; endosulfan; Danio rerio; fish; developmental toxicity; embryogenesis; bioaccumulation
Abstract:
... Fish in agricultural and remote areas may be exposed to endosulfan and its degradation products as a result of direct runoff, atmospheric transport and deposition. The following study used the zebrafish developmental model to investigate the responses to endosulfan I and endosulfan sulfate, the major degradation product of endosulfan I and II. Embryos were dechorionated and waterborne exposed to t ...
DOI:
10.1016/j.aquatox.2009.10.008
PubMed:
19883949
PubMed Central:
PMC2787831

13. Inhibition of egg production in zebrafish by fluoxetine and municipal effluents: A mechanistic evaluation

Author:
Lister, Andrea; Regan, Christine; Van Zwol, Jessica; Van Der Kraak, Glen
Source:
Aquatic toxicology 2009 v.95 no.4 pp. 320-329
ISSN:
0166-445X
Subject:
water pollution; liver function; fish eggs; water quality; spawning; estrogens; gene expression; reproductive toxicology; sewage effluent; fish; Danio rerio
Abstract:
... This study explored the impact of nominal concentrations of ethinylestradiol (EE₂; 10ng/L), fluoxetine (FLU; 0.32, 3.2, 32μg/L), and 1-50% treated municipal effluent on reproduction and liver function in sexually mature female zebrafish over a 7-day period. Compared with the control groups, FLU (32μg/L) and 50% effluent treatment significantly reduced the average eggs spawned by approximately 4.5 ...
DOI:
10.1016/j.aquatox.2009.04.011
PubMed:
19493577

14. Reactive oxygen species generation and expression of DNA repair-related genes after copper exposure in zebrafish (Danio rerio) ZFL cells

Author:
Sandrini, Juliana Zomer; Bianchini, Adalto; Trindade, Gilma Santos; Nery, Luiz Eduardo Maia; Marins, Luis Fernando Fernandes
Source:
Aquatic toxicology 2009 v.95 no.4 pp. 285-291
ISSN:
0166-445X
Subject:
copper; water pollution; cytotoxicity; hepatocytes; in vitro studies; reactive oxygen species; DNA damage; DNA repair; gene expression; bioaccumulation; antioxidant activity
Abstract:
... Copper is an essential metal to aquatic animals, but it can be toxic when in elevated concentrations in water. The objective of the present study was to analyze copper effects in zebrafish hepatocytes (ZFL cell-line). The number of viable cells and copper accumulation were determined in hepatocytes exposed in vitro to different copper concentrations (5-30mgCu/L). Intracellular reactive oxygen spec ...
DOI:
10.1016/j.aquatox.2009.02.016
PubMed:
19328561

15. Zebrafish (Danio rerio) neuromast: Promising biological endpoint linking developmental and toxicological studies

Author:
Froehlicher, Mirjam; Liedtke, Anja; Groh, Ksenia J.; Neuhauss, Stephan C.F.; Segner, Helmut; Eggen, Rik I.L.
Source:
Aquatic toxicology 2009 v.95 no.4 pp. 307-319
ISSN:
0166-445X
Subject:
Danio rerio; fish; animal models; cytotoxicity; neurotoxicity; sensory system; genes; drugs; heavy metals; toxic substances; water pollution
Abstract:
... Aquatic toxicology is facing the challenge to assess the impact of complex mixtures of compounds on diverse biological endpoints. So far, ecotoxicology focuses mainly on apical endpoints such as growth, lethality and reproduction, but does not consider sublethal toxic effects that may indirectly cause ecological effects. One such sublethal effect is toxicant-induced impairment of neurosensory func ...
DOI:
10.1016/j.aquatox.2009.04.007
PubMed:
19467721

16. Markers of Pesticide Exposure in Irrigated Rice Cultures

Author:
Steckert, Amanda V.; Schnack, Caroline E.; Silvano, Jacira; Dal-Pizzol, Felipe; Andrade, Vanessa M.
Source:
Journal of agricultural and food chemistry 2009 v.57 no.23 pp. 11441–11445
ISSN:
0021-8561
Subject:
genotoxicity; irrigated farming; rice; Oryza sativa; toxicity testing; pesticides; fish; Cichlidae; pesticide residues; water pollution; Brazil
Abstract:
... The objective of this research is to verify the genotoxicity caused by pesticides used in irrigated rice cultures in Ararangu city in the southern Brazilian state of Santa Catarina through the alkaline comet assay in peripheral blood of Geophagus brasiliensis and to analyze the toxicity of the water using Daphnia magna as sentinel organism. Three collections of water and fish were made in the main ...
DOI:
10.1021/jf902608d
PubMed:
19902950

17. Microscale solid phase extraction of glyphosate and aminomethylphosphonic acid in water and guava fruit extract using alumina-coated iron oxide nanoparticles followed by capillary electrophoresis and electrochemiluminescence detection

Author:
Hsu, Chia-Chen; Whang, Chen-Wen
Source:
Journal of chromatography 2009 v.1216 no.49 pp. 8575-8580
ISSN:
0021-9673
Subject:
glyphosate; metabolites; herbicide residues; solid phase extraction; water pollution; aqueous solutions; aluminum oxide; iron oxides; adsorption; food contamination; guavas; capillary electrophoresis; chemiluminescence
Abstract:
... A microscale solid-phase extraction (SPE) method using alumina-coated iron oxide nanoparticles (Fe₃O₄@Al₂O₃ NPs) as the affinity adsorbent for glyphosate (GLY) and its major metabolite aminomethylphosphonic acid (AMPA) in aqueous solution is reported. One milligram of Fe₃O₄@Al₂O₃ NPs was employed to extract both analytes in 5ml of aqueous solution. After 5min extraction, magnetic NPs were isolated ...
DOI:
10.1016/j.chroma.2009.10.023
PubMed:
19853856

18. Ultra-trace determination of Persistent Organic Pollutants in Arctic ice using stir bar sorptive extraction and gas chromatography coupled to mass spectrometry

Author:
Lacorte, S.; Quintana, J.; Tauler, R.; Ventura, F.; Tovar-Sánchez, A.; Duarte, C.M.
Source:
Journal of chromatography 2009 v.1216 no.49 pp. 8581-8589
ISSN:
0021-9673
Subject:
water pollution; ice; pesticide residues; organochlorine pesticides; extraction; gas chromatography; mass spectrometry; Arctic region
Abstract:
... This study presents the optimization and application of an analytical method based on the use of stir bar sorptive extraction (SBSE) gas chromatography coupled to mass spectrometry (GC-MS) for the ultra-trace analysis of POPs (Persistent Organic Pollutants) in Arctic ice. In a first step, the mass-spectrometry conditions were optimized to quantify 48 compounds (polycyclic aromatic hydrocarbons, br ...
DOI:
10.1016/j.chroma.2009.10.029
PubMed:
19879587

19. Natural attenuation processes applying to antimony: A study in the abandoned antimony mine in Goesdorf, Luxembourg

Author:
Filella, Montserrat; Philippo, Simon; Belzile, Nelson; Chen, Yuwei; Quentel, François
Source:
Science of the total environment 2009 v.407 no.24 pp. 6205-6216
ISSN:
0048-9697
Subject:
antimony; mining; abandoned land; drainage; chemical concentration; pollutants; minerals; water pollution; sediment contamination; Luxembourg
Abstract:
... The processes leading to the attenuation of the antimony concentration in the water draining from the abandoned antimony mine in Goesdorf, Luxembourg, have been studied. Antimony has been mined in Goesdorf since Roman times from a stibnite-rich mesothermal vein system hosted in metasedimentary schist. The draining waters have pH values between 7 and 8 because the mineralization itself contains cal ...
DOI:
10.1016/j.scitotenv.2009.08.027
PubMed:
19775729

20. Spatial variations in the fate and transport of metals in a mining-influenced stream, North Fork Clear Creek, Colorado

Author:
Butler, Barbara A.; Ranville, James F.; Ross, Philippe E.
Source:
Science of the total environment 2009 v.407 no.24 pp. 6223-6234
ISSN:
0048-9697
Subject:
metals; acid mine drainage; environmental fate; streams; water pollution; point source pollution; nonpoint source pollution; spatial variation; seasonal variation; chemical speciation; hydrochemistry; sorption; oxide, hydroxide, and oxyhydroxide minerals; dissolved organic carbon; Colorado
Abstract:
... North Fork Clear Creek (NFCC) receives acid-mine drainage (AMD) from multiple abandoned mines in the Clear Creek Watershed. Point sources of AMD originate in the Black Hawk/Central City region of the stream. Water chemistry also is influenced by several non-point sources of AMD, and a wastewater treatment plant (WWTP). In-stream conditions immediately downstream from point-source inputs result in ...
DOI:
10.1016/j.scitotenv.2009.08.040
PubMed:
19801165