Assessing reference conditions according to the European Water Framework Directive using modelling and analysis of historical data: an example from Randers Fjord, Denmark

Article Abstract:

Findings suggest that ecological models are a useful tool to evaluate surface water reference conditions, but are limited by an absence of quantitative connections between eutrophication and species composition. Denmark's Randers Fjord is used to demonstrate application of a model to assess chlorophyll, nutrients, and benthic macrophytes and fauna.

Denmark, Usage, Evaluation, Biological models, Eutrophication, Fjords

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Giardia and Cryptosporidium in pristine protected catchments in central eastern Australia

Article Abstract:

The pathogenic protozoa Giardia lamblia and Cryptosporidium parvum have been discovered in remote, protected catchment streams in Australia. Since contamination by human feces is ruled out, the source of the pathogens is likely to be either feral cat or native marsupial populations. Implications for water quality management are discussed.

Australia, Strategy & planning, Management dynamics, Management, Planning, Measurement, Natural history, Coccidia, Cryptosporidium, Water quality management, Company business management, Contamination, Company business planning, Giardia, Giardia lamblia, Catchment areas

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A nitrogen budget of the Changjiang River catchment

Article Abstract:

Research indicates that runoff accounts for most of the export fluxes of various nitrogen forms in China's Changjiang River. Total nitrogen and dissolved inorganic nitrogen result primarily from nonpoint agricultural sources, precipitation, lost soil and fertilizer, residential sewage, and industrial waste.

China, Rivers, Nitrogen cycle, Chemical properties, Yangtze River region

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