aquatic ecosystem management Articles
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Risk mitigation measures for diffuse pesticide entry into aquatic ecosystems: Proposal of a guide to identify appropriate measures on a catchment scale
Measures to mitigate the risk of pesticide entry into aquatic ecosystems are becoming increasingly more important in the management of hot spots of pesticide transfer; such management, for example, is required by the European Union's directive for the sustainable use of pesticides (2009/128/EC). Measures beyond those currently stipulated for pesticide product authorization may be needed. A ...
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Changing tides: Adaptive monitoring, assessment and management of pharmaceutical hazards in the environment through time
Pharmaceuticals are ubiquitous contaminants in aquatic ecosystems. Adaptive monitoring, assessment and management programs will be required to reduce the environmental hazards of pharmaceuticals of concern. Potentially underappreciated factors that drive the environmental dose of pharmaceuticals include regulatory approvals, marketing campaigns, pharmaceutical subsidies and re‐imbursement ...
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Integrative assessment of selenium speciation, biogeochemistry and distribution in a northern coldwater ecosystem
For the past decade, considerable research has been conducted at a series of small lakes receiving treated liquid effluent containing elevated selenium (Se) from the Key Lake uranium milling operation in northern Saskatchewan, Canada. Several studies related to this site, including field collections of water, sediment, and biota (biofilm/periphyton, invertebrates, fish, and birds), ...
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Metabolomics confirms that dissolved organic carbon mitigates copper toxicity
Reductions in atmospheric emissions from the metal smelters in Sudbury, Canada, produced major improvements in acid and metal contamination of local lakes and indirectly increased dissolved organic carbon (DOC) concentrations; however, metal toxicity has remained a persistent problem for aquatic biota. Integrating high‐throughput, non‐targeted mass spectrometry metabolomics with conventional ...
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SA Environment Protection (Water Quality) Policy 2003
The Environment Protection (Water Quality) Policy 2003 (Water Quality Policy) is a policy that safeguards South Australian water resources from pollution. For a long period, the discrepancies surrounding the South Australian laws protecting the State’s water resources from pollution, have lowered the environmental value of all water resources in South Australia. This implies that all the ...
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Identifying the key water levels in reservoir operation on ecological objectives
This paper investigates the influences of reservoir water level variations of the operation rule curves on different objectives, especially on ecological objectives. Five representative ecological objectives are selected besides industrial and domestic (I&D) and agricultural water supply objectives. They can reflect the impacts of reservoir operation on different attributes of ecological ...
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Aquatic Risk Assessment of Pesticides in Latin America
Latin America is anticipated to be a major growth market for agriculture and production is increasing with use of technologies such as pesticides. Reports of contamination of aquatic ecosystems by pesticides in Latin America have raised concerns about potential for adverse ecological effects. In the registration process of pesticides, all countries require significant data packages on aquatic ...
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Changes in benthic nutrient sources within a wetland after hydrologic reconnection
Removing dams and levees to restore hydrologic connectivity and enhance ecosystem services such as nutrient removal has been an increasingly common management practice. In the present study, the authors assessed geochemical and biological changes following engineered levee breaches that reconnected eutrophic Upper Klamath Lake and Agency Lake, Oregon, USA, to an adjacent, historic wetland that ...
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Forests Serve as Freshwater Infrastructure
Restoring watershed headwaters is examined as a water storage strategy A global realization is dawning about the pressing need for more freshwater storage infrastructure to support growing populations in our time of climate change. Faced with the astronomical costs of constructing such infrastructure, however, water management is beginning to look at existing natural features that can serve the ...
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Using watershed function as the leading indicator for water quality
Diffuse nonpoint source (NPS) pollutants, such as sediment, nitrogen, phosphorus, and pathogens, have become the primary cause of water quality impairments in the United States of America. Resource management agencies in the USA are expanding the use of tools for the assessment of ecosystem function in water quality programs to control NPS pollution to meet US Clean Water Act objectives. ...
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Forests Serve as Freshwater Infrastructure
Mountain meadows and forests play an important role in capturing and slowly releasing precipitation. Restoring watershed headwaters is examined as a water storage strategy A global realization is dawning about the pressing need for more freshwater storage infrastructure to support growing populations in our time of climate change. Faced with the astronomical costs of constructing such ...
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Understanding and Managing the Effects of Climate Change on Aquatic Ecosystems
There is mounting evidence that climate-changeinduced extreme events are expected to adversely affect the aquatic ecosystems and ecosystem services that they provide. To address this need to understand how climate, aquatic ecological, and social systems interact and how to manage these coupled systems, LimnoTech is participating with a large team of researchers (from Stanford University, the ...
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The structure and origin of dissolved organic matter studied by UV-vis spectroscopy and fluorescence spectroscopy in lake in arid and semi-arid region
To develop a proper indicator which could predict water quality and trace pollution sources is critically important for the management of sustainable aquatic ecosystem. In our study, seven water samples collected from Wuliangsuhai Lake in Inner Mongolia were used. UV-visible spectra and synchronous fluorescence spectra were applied to investigate the humification degree and aromatic structure of ...
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