Metal and nutrient dynamics in a eutrophic coastal lagoon (Obidos, Portugal): the importance of observations at different time scales.


:Water and sediment quality was monitored at four sites of Obidos coastal lagoon (Portugal) in February, May, July and October 2006, covering different hydrological conditions. Concentrations of nutrients and metals increased in autumn/winter, particularly in an inner branch with symptoms of eutrophication that receives a small tributary contaminated by agro-industrial activities. Moreover, concentrations of PO(4)(3-), Si(OH)(4) and Mn (diffusive gradients of thin films (DGT)-measured) varied inversely with salinity. Additionally, that branch was monitored over 26-h in July 2006 to assess variations of water quality parameters, nutrients and metals on short timescale. During the night, O(2) in water reached a minimum of 40% saturation followed by a pronounced increase of DGT-measured metals and nutrients in water column: Fe and Mn (ten times); Cr, Co, PO(4)(3-) and Si(OH)(4) (six times). Enhancements were also registered for metal/Al ratios in suspended particulate matter: Mn, Cr and Cd (four to six times); Fe, Ni and Co (1.5 times). The metal distribution coefficients calculated along the 26-h survey showed a maximum at daylight suggesting a preferential association of metals with suspended particles. Data recorded under different hydrological conditions and over the 26-h survey allowed to address the influence of external and internal sources on water quality. The results of this study highlight the importance of day/night cycles on the availability of nutrients and metals in eutrophic environments.


Environ Monit Assess


Pereira P,de Pablo H,Vale C,Rosa-Santos F,Cesário R




Has Abstract


2009-11-01 00:00:00












  • Methodology for designing air quality monitoring networks: I. Theoretical aspects.

    abstract::An objective methodology is presented for determining the number and disposition of ambient air quality stations in a monitoring network for the primary purpose of compliance with air quality standards. The methodolgy utilizes a data base with real or simulated data from an air quality dispersion model for application...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Liu MK,Avrin J,Pollack RI,Behar JV,McElroy JL

    更新日期:1986-01-01 00:00:00

  • Assessment of spatial distribution of soil loss over the upper basin of Miyun reservoir in China based on RS and GIS techniques.

    abstract::Soil conservation planning often requires estimates of the spatial distribution of soil erosion at a catchment or regional scale. This paper applied the Revised Universal Soil Loss Equation (RUSLE) to investigate the spatial distribution of annual soil loss over the upper basin of Miyun reservoir in China. Among the s...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Chen T,Niu RQ,Wang Y,Li PX,Zhang LP,Du B

    更新日期:2011-08-01 00:00:00

  • Hydrochemistry and evaluation of groundwater suitability for irrigation and drinking purposes in the Markandeya River basin, Belgaum District, Karnataka State, India.

    abstract::Markandeya River basin stretches geographically from 15°56' to 16°08' N latitude and 74°37' to 74°58' E longitude, positioned in the midst of Belgaum district, in the northern part of Karnataka. Since the quantity and quality of water available for irrigation in India is variable from place to place, groundwater quali...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Ravikumar P,Somashekar RK,Angami M

    更新日期:2011-02-01 00:00:00

  • Reporting emissions of greenhouse gases in Canada.

    abstract::Non-carbon dioxide greenhouse gases are considered in "Canada's National Report on Climate Change: Actions to Meet Commitments Under the United Nations Framework Convention on Climate Change". By including all major greenhouse gases and their anthropogenic sources and sinks using best available science, the Report pro...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Finlay P,Stobbs R

    更新日期:1994-05-01 00:00:00

  • Spatial and temporal analysis of land cover changes and water quality in the Lake Issaqueena watershed, South Carolina.

    abstract::Monitoring changes in land cover and the subsequent environmental responses are essential for water quality assessment, natural resource planning, management, and policies. Over the last 75 years, the Lake Issaqueena watershed has experienced a drastic shift in land use. This study was conducted to examine the changes...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Pilgrim CM,Mikhailova EA,Post CJ,Hains JJ

    更新日期:2014-11-01 00:00:00

  • Distribution and sources of PCBs (Aroclor 1268) in the Sapelo Island National estuarine research reserve.

    abstract::Aroclor 1268 is a highly chlorinated PCB mixture that was released into the aquatic environment near Brunswick, GA (BR), as a result of decades of local industrial activity. This extensive contamination has led to US EPA Superfund designation in estuarine areas in and around Purvis Creek, GA. Roughly 50 km to the nort...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Wirth EF,Pennington PL,Cooksey C,Schwacke L,Balthis L,Hyland J,Fulton MH

    更新日期:2014-12-01 00:00:00

  • Hydrogeochemical processes controlling the high fluoride concentration in groundwater: a case study at the Boden block area, Orissa, India.

    abstract::The present investigation reports the assessment of hydrochemical/geochemical processes controlling the concentration of fluoride in groundwater of a village in India (Boden block, Orissa). Boden block is one of the severely affected fluoride-contaminated areas in the state of Orissa (India). The sampling and subseque...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Dey RK,Swain SK,Mishra S,Sharma P,Patnaik T,Singh VK,Dehury BN,Jha U,Patel RK

    更新日期:2012-05-01 00:00:00

  • ESMI: a macrophyte index for assessing the ecological status of lakes.

    abstract::The paper introduces the Ecological State Macrophyte Index (ESMI), a method compliant with the Water Framework Directive (2000/60/EC) for assessing the ecological status of lakes based on macrophytes. A description of the elaboration of macrophyte metrics, relevant reference conditions and a classification system for ...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Ciecierska H,Kolada A

    更新日期:2014-09-01 00:00:00

  • Variations in epilimnion thickness in small boreal shield lakes: relationships with transparency, weather and acidification.

    abstract::We used multiple linear regression analysis to investigate relationships between late-summer epilimnion thickness, transparency, lake area, acidity and summer weather conditions in a large ($n = 116$) multi-year data set for 9 small Boreal Shield lakes. Dissolved organic carbon (DOC) was the best individual predictor ...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Keller WB,Heneberry J,Leduc J,Gunn J,Yan N

    更新日期:2006-04-01 00:00:00

  • Fertigation effect of distillery effluent on agronomical practices of Trigonella foenum-graecum L. (Fenugreek).

    abstract::The fertigation effect of distillery effluents concentrations such as 5%, 10%, 25%, 50%, 75% and 100% were studied on Trigonella foenu-graecu (Pusa early bunching) along with control (bore well water). On irrigation of soil with different effluents up to 90 days of harvesting, it was observed that there was a signific...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Vinod Kumar,Chopra AK

    更新日期:2012-03-01 00:00:00

  • Preliminary screening of polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCDD) and tetrabromobisphenol A (TBBPA) flame retardants in landfill leachate.

    abstract::The occurrence of selected brominated flame retardants, including nine polybrominated diphenyl ether (PBDE) congeners, hexabromocyclododecane (HBCDD) and tetrabromobisphenol A (TBBPA) in leachate samples from eight landfill sites in South Africa, were investigated. In addition, the possible influences of dissolved org...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Daso AP,Rohwer ER,Koot DJ,Okonkwo JO

    更新日期:2017-08-01 00:00:00

  • Study on concentration of ambient NH3 and interactions with some other ambient trace gases.

    abstract::We present diurnal variation of ambient ammonia (NH(3)) in relation with other trace gases (O(3), CO, NO, NO(2), and SO(2)) and meteorological parameters at an urban site of Delhi during winter period. For the first time, ambient ammonia (NH(3)) was monitored very precisely and continuously using ammonia analyzer, whi...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Sharma SK,Datta A,Saud T,Mandal TK,Ahammed YN,Arya BC,Tiwari MK

    更新日期:2010-03-01 00:00:00

  • Using photographic image analysis to assess ground cover: a case study of forest road cutbanks.

    abstract::Road prisms, including cutbanks, road surfaces, and fillslopes, can be important contributors of sediment to streams in forested watersheds. Following road construction, cutbanks and fillslopes are often seeded, mulched, and sometimes fertilized to limit erosion and sedimentation. Assessing the success of vegetation e...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Bold KC,Wood F,Edwards PJ,Williard KW,Schoonover JE

    更新日期:2010-04-01 00:00:00

  • The effects of abscisic acid (ABA) addition on cadmium accumulation of two ecotypes of Solanum photeinocarpum.

    abstract::The study of the effects of exogenous abscisic acid (ABA) addition on cadmium (Cd) accumulation of two ecotypes (mining and farmland) of Solanum photeinocarpum was operated through a pot experiment. The results showed that the biomass and chlorophyll content of the two ecotypes of S. photeinocarpum increased with incr...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Wang J,Lin L,Luo L,Liao M,Lv X,Wang Z,Liang D,Xia H,Wang X,Lai Y,Tang Y

    更新日期:2016-03-01 00:00:00

  • Health risk estimation due to carbon monoxide pollution at different spatial levels in Santiago, Chile.

    abstract::The Metropolitan Region of Santiago has been declared as nonattainment area for carbon monoxide (CO). The data was based on seven air monitoring stations that do not necessarily represent the real population exposure. Usually, a series of coefficients that relates the concentration of pollutants with health effects (b...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Sanhueza P,Pizarro J,Vargas C,Torreblanca M,Passalacqua M

    更新日期:2010-08-01 00:00:00

  • Fiber optic light sensor.

    abstract::We describe a low-cost fiber optic sensor for measuring photosynthetically active radiation (PAR) in turbulent flow. Existing technology was combined in a novel way for probe development addressing the need for a small but durable instrument for use in flowing water. Optical components including fiber optics and a wid...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Chudyk W,Flynn KF

    更新日期:2015-06-01 00:00:00

  • Change of air quality and its impact on atmospheric visibility in central-western Pearl River Delta.

    abstract::Ambient air quality data, including atmospheric visibility, of Foshan city, a highly polluted city in the Pearl River Delta (PRD), and data obtained by the On-line Air Pollutant Exhaust Monitoring Network (OAPEMN), recently established by the National Emission Monitoring and Control Network for major industrial enterp...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Wan JM,Lin M,Chan CY,Zhang ZS,Engling G,Wang XM,Chan IN,Li SY

    更新日期:2011-01-01 00:00:00

  • Assessment of comprehensiveness of soil conservation measures using the DPSIR framework.

    abstract::The assessment of comprehensiveness of soil conservation measures (SCMs), along with economic, social, and environmental assessments of these projects, is a prerequisite for good governance in a watershed. This study was conducted using the cause-and-effect framework of DPSIR (Driver-Pressure-State-Impact-Response) to...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Salehpour Jam A,Mosaffaie J,Tabatabaei MR

    更新日期:2021-01-07 00:00:00

  • Recent developments of certified reference materials for road transportation.

    abstract::Chemical measurements often constitute the basis for informed decision-making at different levels in society; sound decision-making is possible only if the quality of the data used is uncompromised. To guarantee the reliability and comparability of analytical data an intricate system of quality-assurance measures has ...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Chauhan SK,Gupta PK,Shukla A,Gangopadhyay S

    更新日期:2009-09-01 00:00:00

  • Indoor air quality modeling for PM 10, PM 2.5, and PM 1.0 in naturally ventilated classrooms of an urban Indian school building.

    abstract::Assessment of indoor air quality (IAQ) in classrooms of school buildings is of prime concern due to its potential effects on student's health and performance as they spend a substantial amount of their time (6-7 h per day) in schools. A number of airborne contaminants may be present in urban school environment. Howeve...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Goyal R,Khare M

    更新日期:2011-05-01 00:00:00

  • Scenario analysis for the San Pedro River, analyzing hydrological consequences of a future environment.

    abstract::Studies of future management and policy options based on different assumptions provide a mechanism to examine possible outcomes and especially their likely benefits and consequences. The San Pedro River in Arizona and Sonora, Mexico is an area that has undergone rapid changes in land use and cover, and subsequently is...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Kepner WG,Semmens DJ,Bassett SD,Mouat DA,Goodrich DC

    更新日期:2004-06-01 00:00:00

  • Sediment contaminant surveillance in Milford Haven Waterway.

    abstract::Sediment contaminants were monitored in Milford Haven Waterway (MHW) since 1978 (hydrocarbons) and 1982 (metals), with the aim of providing surveillance of environmental quality in one of the UK's busiest oil and gas ports. This aim is particularly important during and after large-scale investment in liquefied natural...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Little DI,Bullimore B,Galperin Y,Langston WJ

    更新日期:2016-01-01 00:00:00

  • A review of the effects of agricultural and industrial contamination on the Ebro delta biota and wildlife.

    abstract::The Ebro delta (NE Spain) is a 320 km2 wetland area of international importance for conservation. The area is devoted to rice farming and receives large amounts of pesticides. Industrial pollutants are also carried to the delta by the river. The information accumulated during the last 25 year on the effect of such pol...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章,评审


    authors: Mañosa S,Mateo R,Guitart R

    更新日期:2001-10-01 00:00:00

  • Chloride migration in groundwater for a tannery belt in Southern India.

    abstract::Groundwater in a tannery belt in Southern India is being polluted by the discharge of untreated effluents from 80 operating tanneries. Total dissolved solids and chloride (Cl(-)) measurements in open wells in the tannery cluster vary from 27,686 to 39,100 and 12,000 to 13,652 mg/l, respectively. A mass transport model...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Mondal NC,Singh VP

    更新日期:2012-05-01 00:00:00

  • Embryo-larvae and juvenile toxicity of Pb and Cd in Northern Chilean scallop Argopecten purpuratus.

    abstract::This study aimed to investigate the effects of Cd and Pb on earlier stage of the commercially important scallop (Argopecten purpuratus) in the contamination context of Northern Chile where this specie is farmed, through acute exposure bioassays in embryo-larvae measuring cumulative abnormality (EC50) and juvenile cumu...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Romero-Murillo P,Espejo W,Barra R,Orrego R

    更新日期:2017-12-13 00:00:00

  • Improving nitrate load estimates in an agricultural catchment using Event Response Reconstruction.

    abstract::Low-frequency grab sampling cannot capture fine dynamics of stream solute concentrations, which results in large uncertainties in load estimates. The recent development of high-frequency sensors has enabled monitoring solute concentrations at sub-hourly time scales. This study aimed to improve nitrate (NO3) load estim...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Jomaa S,Aboud I,Dupas R,Yang X,Rozemeijer J,Rode M

    更新日期:2018-05-07 00:00:00

  • Response of soil invertebrates to disturbance across three resource regions in North Carolina.

    abstract::We evaluated the potential of soil microarthropods and enchytraeid worms to be useful as bioindicators of soil condition in forest, wetland, and agricultural ecosystems over a range of ecoregions. Selected mesofauna and soil characteristics in soil and litter in relatively undisturbed and disturbed examples of each of...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Barbercheck ME,Neher DA,Anas O,El-Allaf SM,Weicht TR

    更新日期:2009-05-01 00:00:00

  • First assessment of trace metal concentration in mangrove crab eggs and other tissues, SE Brazil.

    abstract::The mangrove crab Ucides cordatus is widespread in the Brazilian coast, which has an important role in nutrient cycling. This species reproduces in summer and females carry eggs about a month, when they maintain contact with water and sediments. It remains unclear if trace metals can be absorbed or adsorbed by the egg...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: de Almeida EV,Kütter VT,Marques ED,da Silva-Filho EV

    更新日期:2016-07-01 00:00:00

  • The distribution and extent of heavy metal accumulation in song sparrows along Arizona's upper Santa Cruz River.

    abstract::Heavy metals are persistent environmental contaminants, and transport of metals into the environment poses a threat to ecosystems, as plants and wildlife are susceptible to long-term exposure, bioaccumulation, and potential toxicity. We investigated the distribution and cascading extent of heavy metal accumulation in ...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Lester MB,van Riper C 3rd

    更新日期:2014-08-01 00:00:00

  • Changes in valued "Capacities" of soils and sediments as indicators of nonlinear and time-delayed environmental effects.

    abstract::This paper discusses the buffering, oxygen-donating, and sorption capacities of soils and sediments as an inter-connected system for regulating the retention and release of chemical pollutants. In this context, the author discusses the chemical conditions under which sediments may serve as a source or a sink for toxic...

    journal_title:Environmental monitoring and assessment

    pub_type: 杂志文章


    authors: Stigliani WM

    更新日期:1988-05-01 00:00:00