Aquatic Ecological Monitoring Articles on Environmental XPRT

Effects of iron on ecological communities

Mark and I have been working with the Iron industry to try to understand the effects of iron on aquatic ecosystems. We have been analysing extensive field monitoring data on the quality of invertebrate communities in rivers and relating this to the levels of different forms of iron (total, dissolved, or particulate) that are present. Invertebrate communities do appear to be adversely affected ...

Sep. 25, 2011

By WCA Environment Ltd.

Developing a foundation for eco‐epidemiological assessment of aquatic ecological status over large geographic regions utilizing existing data resources and models

Eco‐epidemiological studies utilizing existing monitoring program data provide a cost‐effective means to bridge the gap between ecological and chemical status of watersheds and to develop hypotheses of stressor attribution that can influence the design of higher‐tier assessments and subsequent management. The present study describes the process of combining existing data and models to develop ...

Mar. 19, 2014

By John Wiley & Sons, Ltd.

Impacts of aquatic macrophytes configuration modes on water quality

Constructed wetland technology is regarded as an important ecological restoration technology and used widely in sewage disposal. In order to give them a wider scope of application and to improve their performance in water restoration, the current experiment was designed. Four aquatic macrophytes (dwarf cattail (TM), yellow-flowered iris (WI), water shallot (ST) and watermifoil (MS)) were picked ...

Jan. 29, 2014

By IWA Publishing

Why care about aquatic insects: Uses, benefits and services benefits of aquatic insects

Aquatic insects are common subjects of ecological research, and environmental monitoring and assessment. However, their important role in protecting and restoring aquatic ecosystems is often challenged, because their benefits and services to humans are not obvious to decision makers or the public. Insects are food for fish, amphibians and wildlife. They are important contributors to energy and ...

Nov. 7, 2014

By John Wiley & Sons, Ltd.

Root length of aquatic plant, Lemna minor L., as an optimal toxicity endpoint for bio‐monitoring of mining effluents

Lemna minor, a free‐floating macrophyte, is used for bio‐monitoring of mine effluent quality under the Metal Mining Effluent Regulations (MMER) of the Environmental Effects Monitoring (EEM) program in Canada, and is known to be sensitive to trace metals commonly discharged in mine effluents such as nickel. Environment Canada's standard toxicity testing protocol recommends frond count (FC) and ...

Jul. 7, 2014

By John Wiley & Sons, Ltd.

Modeling the potential effects of atrazine on aquatic communities in midwestern streams

The comprehensive aquatic systems model for atrazine (CASMATZ) estimates the potential toxic effects of atrazine on populations of aquatic plants and consumers in a generic lower‐order midwestern stream. The CASMATZ simulates the daily production of 20 periphyton and 6 aquatic vascular plant species. The modeled consumer community consists of 17 functionally defined species of zooplankton, ...

Aug. 26, 2013

By John Wiley & Sons, Ltd.

Hydraulic “Fracking”: Are surface water impacts an ecological concern?

Use of high‐volume hydraulic fracturing (HVHF) in unconventional reservoirs to recover previously inaccessible oil and natural gas is rapidly expanding in North America and elsewhere. Although hydraulic fracturing has been practiced for decades, the advent of more technologically advanced horizontal drilling coupled with improved slickwater chemical formulations has allowed extensive natural ...

Jul. 17, 2014

By John Wiley & Sons, Ltd.

Challenges for exposure prediction in Ecological Risk Assessment

Evaluating organism exposure in the ecosystems is a difficult task and can be carried out measuring or predicting concentrations in the environment. While current regulatory approaches favour a modelling approach, they either use a static representation of the environment and of the chemical discharge or a simplified dynamic approach (e.g. dealing with pesticides). Improving the ecological ...

Apr. 22, 2013

By John Wiley & Sons, Ltd.

Hydro-ecological effects of changing Arctic river and lake ice covers: a review

Freshwater ice is an integral part of the hydrologic regimes of cold environments. It controls the ecology of related aquatic systems and is important economically, through the facilitation of winter transport and via generation of extreme hydrologic events. Given projected changes in future climate, concern has been raised about related changes in freshwater ice. This paper reviews the status ...

Dec. 1, 2010

By IWA Publishing

Decision support for ecological river rehabilitation using fish habitat database

After the recent success of several river rehabilitation projects including the Cheong-gye river case, a large number of local governments have been promoting their own projects in Korea. Most of the projects are aimed at securing the soundness of aquatic ecosystems according to the guidelines presented by the Korea Ministry of Environment. However, there is no clear guidance for the management ...

Jun. 5, 2014

By IWA Publishing

Ecological condition of wadeable streams of the interior Columbia river basin

EMAP (Environmental Monitoring and Assessment Program) was initiated by EPA to estimate the status and trends of the nation's ecological resources and examine associations between ecological condition and natural and anthropogenic influences. The surface water component of EMAP is based on the premise that the condition of stream biota can be addressed by examining biological and ecological ...

Dec. 1, 2007

By US EPA - Environmental Protection Agency

Prioritizing human pharmaceuticals for ecological risks in freshwater environment of Korea

Pharmaceutical residues are potential threats to aquatic ecosystem. Since more than 3000 active pharmaceutical ingredients (APIs) are in use, identifying high priority pharmaceuticals is important for developing appropriate management options. Priority pharmaceuticals may vary by geographical region, as their occurrence levels can be influenced by demographic, societal, and regional ...

Sep. 8, 2015

By John Wiley & Sons, Ltd.

Selective Serotonin Reuptake Inhibitors and β‐blocker Transformation Products May Not Pose a Significant Risk of Toxicity to Aquatic Organisms in Wastewater Effluent‐Dominated Receiving Waters

A probabilistic ecological risk assessment was conducted for the transformation products (TPs) of three β‐blockers (atenolol, metoprolol, and propranolol) and five selective serotonin re‐uptake inhibitors (SSRIs; citalopram, fluoxetine, fluvoxamine, paroxetine, and sertraline) to assess potential threats to aquatic organisms in effluent‐dominated surface waters. To this end, the ...

Mar. 27, 2015

By John Wiley & Sons, Ltd.

Using Benthic Macroinvertebrates to Assess Ecological Status of Lakes Current Knowledge And Way Forward to Support WFD Implementation

Directive 2000/60/EC, commonly known as the Water Framework Directive (WFD) has initiated achange in both the concept of water quality and its assessment throughout Europe. It has started a shift from the mindset of Europe’s water resource being a product which may be monitored chemically to ensure its suitability for human use to one that regards water as a heritage. A more holistic assessment ...

Jan. 1, 2006

The use of traits‐based approaches and eco(toxico)logical models to advance the ecological risk assessment framework for chemicals

This paper presents a framework to diagnose and predict the effects of chemicals, integrating two promising tools to incorporate more ecology into ecological risk assessment, viz. traits‐based approaches and ecological modelling. Traits‐based approaches are increasingly used to derive correlations between the occurrence of species traits and chemical exposure from biological and chemical ...

Apr. 29, 2013

By John Wiley & Sons, Ltd.

Water quality of Danube Delta systems: ecological status and prediction using machine-learning algorithms

Environmental issues have a worldwide impact on water bodies, including the Danube Delta, the largest European wetland. The Water Framework Directive (2000/60/EC) implementation operates toward solving environmental issues from European and national level. As a consequence, the water quality and the biocenosis structure was altered, especially the composition of the macro invertebrate ...

Feb. 19, 2016

By IWA Publishing

Evaluation of Ecological Risks Associated with the use of Chlorine Dioxide for the Bleaching of Pulp: Scientific Progress Since 1993

1.1 Scope and Objectives A small number of viable options are presently available for the bleaching of wood pulp (delignification and brightening) during the manufacture of pulp and paper. The use of chlorine dioxide (ClO2) in the bleaching process has largely superceded the earlier use of Cl2, or elemental chlorine, in the majority of North American pulp mills: It was discovered over a decade ...

Jan. 1, 2000

By Alliance for Environmental Technology (AET)

Ecological and Human Health Risk Assessment: Focussing on complex chemical risk assessment and the identification of highest risk conditions

The mission of the Joint Research Centre, which is a Directorate General of the European Commission, is to provide customer-driven scientific and technical support to the EU policy making process, ensuring support to the implementation and monitoring of existing policies and responding to new policy demands. The way that the Joint Research Centre accomplishes its customer-driven tasks is mainly ...

Jan. 1, 2006

Forecasting selenium discharges to the San Francisco Bay-Delta estuary: Ecological effects of a proposed San Luis drain extension

Selenium discharges to the San Francisco Bay-Delta Estuary (Bay-Delta) could change significantly if federal and state agencies (1) approve an extension of the San Luis Drain to convey agricultural drainage from the western San Joaquin Valley to the North Bay (Suisun Bay, Carquinez Strait, and San Pablo Bay); (2) allow changes in flow patterns of the lower San Joaquin River and Bay-Delta while ...

Aug. 26, 2008

By U.S. Geological Survey (USGS)

Remote monitors track river restoration success

The Norfolk Rivers Trust has installed a remote river monitoring station that has been tracking water quality and flow before and after river restoration work at an area of ecological importance on the River Nar. Rising in chalk hills to the east of the village of Tittleshall, the river flows south for 2.5 km until it reaches Mileham, then predominately west for 39.5 km through the villages of ...

May 9, 2013

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