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About FRN

January 14, 2019

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Freshwater Research News (FRN) is a free newsletter designed to increase understanding of aquatic issues by bringing recently-published research findings to a general audience. FRN draws on articles from over 60 scientific journals to produce brief, easy-to read summaries of the background and significance of freshwater research projects from around the world. The subject range […]

Wetland fish sampling

January 14, 2019

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How best to sample fish communities in lakes and wetlands?  Canadian biologists set out to develop a cost-effective sampling strategy that captured a high proportion of fish species.  Using a 9 m × 1.8 m seine net with 3 mm mesh, they collected fish from wetlands in Lake Ontario, Lake Erie, Lake Huron and the upper […]

Getting the message across

October 8, 2018

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Since recreational boaters can unintentionally spread invasive aquatic species while transporting boats and equipment from one body of water to another, it’s important that management agencies communicate the need for boaters to clean, drain and dry their gear after use.  Researchers used a questionnaire-based approach to find out if the way the “clean, drain and […]

How the food web affects river restoration

October 8, 2018

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River restoration commonly  concentrates on improving habitat quality for threatened fish populations.  However, because stream fish are strongly influenced by food availability, competition and predation, a case can be made for also incorporating food web modelling into the restoration process.  A group of environmental scientists developed an ecosystem model and applied it to a river-floodplain […]

Facing up to fish recognition

October 8, 2018

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Although it’s been shown that fish can visually discriminate between other members of their species, the traits used for recognition aren’t well understood.  Working with masked julie  (Julidochromis transcriptus), a Tanganyikan cichlid with stripe patterns from head to tail,  Japanese scientists  investigated the relative importance of  face and body markings in individual recognition.  They kept […]

What drives regional differences in streamflow?

October 8, 2018

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Typically, large-scale models of stream flow take into account the interaction between climate and vegetation (which determines evapotranspiration) and landscape features that dictate how non-evaporated water is diverted to soil, groundwater and overland flow.  However, there are often strong spatial variations in streamflow drivers, which can limit the usefulness of global models.  Researchers drew on […]

Research on insect emergence warms up

October 8, 2018

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Long-term data show that climate change affects ecosystem functioning and the body size distributions of animal species, but more information is needed to understand the mechanisms underlying these changes.  There’s a need for experimental studies that take account of linkages between the aquatic and terrestrial environment and that simulate changes in the intensity and frequency […]